Page 2
Old Tampa Bay Entrance (Port Tampa), Florida, 1994 , F-Flood, Dir. 025° True E-Ebb, Dir. 207° True
2 0310 0621 0.9F 17 0214 0521 0.8F 2 0340 0655 0.9F 17 0233 0541 0.9 F Sa 1129 0911 1049 Su 0.3E 1021 1233 0.4E 0927 M 1136 0.4E TU 1613 0.7 F 1233 1547 0.8F 1448 1716 0.5 F 1403 1644 0.6F 0 1857 1818 2215 1.1 E 2004 1914 2312 1.0E 3 0015 1.0 E 18 0321 0638 0.8F 3 0110 0.9€ 18 0326 0634 0.9F Su 0426 0739 0.9 F 1200 M 0436 0751 0.9 F 1010 1244 0.6E Tu W 1301 1655 0.6F 1105 1349 0.5E 1539 1807 0.6 F 1727 0.5 F O 1924 2334 1.0E 1626 1851 0.5 FO 2047 2017 2144 4 0219 1.0 E 19 0427 0744 0.8 F 4 0224 0029 0.9E 0533 0842 1.0F M 1116 1321 Tu 0.4E 0526 0837 1.0F w 1.0F 0418 0723 Th 1213 1429 0.4E 1544 1820 0.5 F 1144 1453 0.8 E 1048 1353 0.8 E 1636 1905 0.5 F 2055 1745 2021 0.6 F 1707 1937 0.7 F 2204 2315 2232 5 0326 1.0 E 20 0111 0318 0.8 € 20 0149 0.8 E 0627 0931 Tu 1.1 F 0524 0834 0.9 F 0608 0915 W 1.0F 1.0F Th 0508 0808 F 1249 1533 0.6E 1156 1435 0.6E 1217 1545 1.0E 1122 1456 1.0 E 1802 2040 0.6F 1719 1949 0.6F 1845 2127 0.8 F 1819 2059 0.9 F 2339 2238 6 0416 1.1 E 21 0242 1.0E 6 0027 0400 0.7E 21 0006 0302 0.7E 0710 1010 1.1 F 0612 0912 1.0F Th 0643 0944 1.0F 0554 0850 1.1 F F 1320 1623 0.8E 1228 1534 0.9E 1245 1630 Sa 1.2 E 1154 1552 1.3 E 1904 2146 0.8 F 1830 2106 0.8 F 1935 2219 0.9F 1921 2207 1.1 F
0035 0.7E 17 0314 0619 1.0F 0406 0720 0.8 F 0937 1307 1.0 E F 1032 1400 0.9 E 1654 1928 0.7 F 1714 1949 0.6 F 2232 2240 0140 0.6E 18 0111 0.6E 0447 0758 0.8 F 0403 0709 1.0F Sa 1108 1501 1.0 E 1018 1421 1.2 E 1820 2101 0.7 F 1811 2057 0.8 F 2359 0241 0.5€ 19 0013 0229 0.4E 0527 0832 0.8 F 0453 0800 1.0F 1141 1554 Su 1.1 E 1101 1535 1.4E 1915 2200 0.9 F 1916 2209 1.0F
8 0142 0526 1.0E 0814 1107 F 1.1 F 1409 1739 1.2 E 2035 2319 1.0F
0121 0436 0.9 € 0731 1018 1.2 F 1320 1704 1.4E 2021 2308 1.3F
0219 0504 0739 1029 1330 1742 2101 2348
0.6E 23 0239 0501 0.9 F 0716 1010 M 1.3 E 1301 1731 1.1 F 2110
7 0303 0505 0.45 22 0005 1.3 F 0712 1010 0.9 F 0359 0547 0.3 E Tu w 1306 1757 1.3E 0727 1028 1.0F 2131 1320 1828 1.7E 2158 8 0023 0056 1.3 F 0353 0548 0.3 E 0449 0638 0.3E W Th 0747 1047 0.9 F 0819 1117 1.1 F 1335 1823 1.3EO 1409 1914 1.7E 2211 2245 9 0105 1.1 F 24 0143 1.3 F 0440 0631 0.3E 0530 0725 0.4E Th 0825 1126 1.0F 0912 1206 1.1 F 1409 1842 1.3 E 1458 1954 1.6 E 2249 2328 10 0144 1.1 F 25 0226 1.3F 0524 0713 0.3E 0605 0809 0.5 E F Sa 0907 1208 1.0F 1006 1255 1.0F 1447 1906 1.4E 1548 2026 1.5 E 2325 11 0220 1.1 F 26 0006 0303 1.2 F 0603 0756 0.4E 0636 0851 Su 0.5E Sa 0952 1252 1.0F 1101 1345 1.0F 1529 1938 1.4 E 1638 2053 1.4 E 2359 12 0255 1.1 F 0040 0337 1.1 F 0640 0839 0.4E 0705 0932 0.6E Su 1043 1340 1157 1437 0.9 F 1616 2018 1.4 € 1729 2121 1.26
24 0004 1.3 F 0346 0553 0.5 E Tu 0754 1051 1.1 F 0 1339 1818 1.7E 2202 0058 1.4F 25 0448 0644 0.4E 0834 1133 1.1 F 1420 1904 1.7E 2253 26 0151 1.3F 0544 0733 0.4E Th 0918 1218 1.1 F 1504 1949 1.7E 2343 27 0242 1.3 F 0633 0821 0.3E F 1007 1305 1.1 F 1551 2031 1.5 E
0002 1.4 F 0331 0608 0.8 E 0838 1125 1.2 F 0 1416 1824 1.7E 2204 26 0055 1.4 F 0433 0653 0.6E Tu 0910 1202 1.2 F 1449 1903 1.7E 2256 0149 W 0534 0739 0.5E 0944 1241 1.2 F 1526 1944 1.7E 2350 28 0245 0633 0826 Th 0.4E 1021 1323 1.1 F 1607 2026 1.6 E
10 0029 1.1 F 0353 0607 0.5E Tu 0827 1119 1.0F 1408 1826 1.3E 2220 11 0110 1.1 F 0439 0643 0.5 E W 0854 1151 1.0F 1433 1842 1.3E 2258 0150 1.0F Th 0525 0722 0.4E 0925 1227 1.0F 1505 1906 1.4E 2337 0231 1.0F 0611 0804 0.4E F 1001 1306 1.0F 1541 1938 1.4E
11 0037 1.17 0354 0633 0.7E M 0917 1201 1.0F 1456 1851 1.3E 2229 12 0115 Tu 0435 0702 0.7E 0937 1226 1.0F 1514 1906 1.3 E 2306 13 0154 1.1 F 0519 0736 0.6E w 1000 1256 1.1 F 1538 1927 1.3 E 2345 14 0235 1.0F 0605 0814 0.5 E Th 1028 1330 1.1 F 1608 1954 1.3E
29 0044 0344 0733 0917 1104 1408 1652 2113
1.2F | 14 0016 0313 1.0F 29 0116 0420 1.1 F 0.3E 0700 0849 0757 0959 0.4E Sa 0.4E 1.0F Su 1043 1350 1.0F 1203 1448 0.9 F 1.4E 1623 2018 1.4E 1734 2153 1.2 E
14 0109 0406 0749 1011 TU 1244 1528 1804 2154
0140 0438 0.9 F 0803 1058 0.8 E 1403 1633 0.7 F 1926 2238 0.9E
Time meridian 75o W. 0000 is midnight. 1200 is noon. If three consecutive entries are marked (F) the middle one is not a true maximum but an intermediate value to show the current pattern. Page 3
Time meridian 90° W. 0000 is midnight. 1200 is noon. If three consecutive entries are marked (F) or (E) the middle one is not a true maximum but an intermediate value to show the current pattern.
Time meridian 90° W. 0000 is midnight. 1200 is noon. If three consecutive entries are marked (F) or (E) the middle one is not a true maximum but an intermediate value to show the current pattern.
Galveston Bay Entrance (between jetties), Texas, , 1994 F-Flood, Dir. 300° True E-Ebb, Dir. 100° True
h m 0100 0558 0819 1809 1935
hm 0108 0530 0754 1106 1346 1619 1928 2059 0203 0646 0924 1832 2008
0158 0707 0942 1704 1924 2026
17 0436 0750 Th 1527 2345
knots hm h m knots 0039 1105 0118 1544 1905 1.8F Su 0621 2358 1212 1.3E 1632 1916 0.9 F 2231 0155 0157 0.7E 0628 0734 M 1157 1.7E 1315 0.7E 1627 1945 1.4 F 1722 1955 0.6F 2324 2208 0231 0242 1.0 E 0801 0733 0855 0.3 F Tu 1323 1.0 E 1454 1712 2026 0.9F 2037 0.3F 2300 2206 0313 1.35 19 0332 0750 0933 0.5F 0817 1027 0.6 F w 1236 1520 0.3 E 1900 1802 2108 0.6 F O 2124 2258 0359 18E 20 0422 1.6 E 0831 1106 1.1 F 08591258 1.0F Th 1902 1808 2005 0.3 E 2151 0.3F 2212 2308 0448 0509 2.0E 0916 1233 1.7 F 0939 1322 1.5 F F 2028 1857 2056 0.3E 2237 2301
Time meridian 90° W. 0000 is midnight. 1200 is noon. If three consecutive entries are marked (E) the middle one is not a true maximum but an intermediate value to show the current pattern.
Galveston Bay Entrance (between jetties), Texas, 1994 F--Flood, Dir. 300° True E-Ebb, Dir. 100° True
Time meridian 90° W. 0000 is midnight. 1200 is noon. If three consecutive entries are marked (E) the middle one is not a true maximum but an intermediate value to show the current pattern.
Galveston Bay Entrance (between jetties), Texas, 1994 F-Flood, Dir. 300° True E-Ebb, Dir. 100° True
Time meridian 90° W. 0000 is midnight. 1200 is noon. If three consecutive entries are marked (E) the middle one is not a true maximum but an intermediate value to show the current pattern. Page 4
Slack Maximum Slack Maximum Slack Maximum Slack Maximum Slack Maximum Slack Maximum knots hm knots hm knots h m hm knots knots hm knots 1 0117 0217 0215 0.6E 0020 0311 0236 0.5€ 16 0043 0320 0.3E 0441 0737 0.5 F Sa 0523 0837 Su 0.7 F 0507 0833 0.8F 0548 0925 Tu 0.7 F 1.0F 0515 0855 0543 0929 0.7 F 1037 1344 0.5 E W Th F 1148 1503 0.7E 1148 1511 0.9 E 1243 1613 0.8E 1216 1545 1.0E 1248 1626 0.9E 1649 1952 0.5 F 1829 2111 0.5 F 1848 2125 0.5 F 2006 2231 0.4 F 1935 2203 0.5 F 2027 2251 0.4 F 2250 2359 2 0207 0305 0.6E 2 0010 0308 0.6E 0112 0355 0.42 17 0044 0334 0.5€ 17 0136 0406 0.3E 0522 0824 0.6 F 0604 0922 Su 0.7 F M 0554 0923 0.9 F 0.7 F 0626 1004 0610 0949 1.0F Th 0625 1010 F 1127 1439 0.6E 0.7 F 1234 1553 Sa 0.7 € 1238 1604 1.0 E 1320 1654 0.8 E 1308 1638 1.1 E 1326 1705 0.9E 1753 2049 0.6F 1925 2203 0.4 F 1945 2221 0.6F 2048 2316 0.4 F 2027 2259 0.6 F O 2104 2334 0.4 F 2346 3 0256 0.7€ 18 0050 0350 0.5 E 3 0108 0400 0.6 E 18 0201 0438 0.3E 3 0146 0431 0.5€ 18 0225 0452 0.3E 0602 0911 0.7 F M 06411003 0.7 F Tu 1.0F 0642 1013 0.7 F 0704 1042 1.0F Th 0706 1042 0710 1051 0.7 F 1216 1532 0.8 E 1315 1638 0.8E 1328 1656 1.1 E 1356 1732 Sa Su 0.9E 1359 1729 1.1 E 1403 1743 0.9E 1853 2144 0.6 F 2015 2251 0.4 F 2038 2315 0.6F | O 2127 2358 0.4 F 2116 2353 0.6F 2138 4 0039 0344 0.7€ 19 0137 0432 0.5E 4 0204 0453 0.6E 19 0249 0520 0245 0529 0013 0.4 F 0643 0957 0.8 F Tu 0717 1042 0.7 F W 0733 1104 1.0F 0742 1120 0.7F 0805 1136 1.0F 0310 0537 0.3E F 1304 1624 0.9E Su 1353 1719 Sa М. 0.8E 1419 1747 1.1 E 1432 1810 0.9 E 1449 1820 1.1 E 0757 1132 0.7 F 1951 2238 0.6F 0 2100 2335 0.4 F 2130 2204 2203 1441 1820 0.9E 2211 0131 0432 0.7E 20 0222 0511 0008 0.6F 20 0038 0045 0051 0.5F 0725 1043 0.9 F 0752 1118 0.7 F 0300 0547 0.6E Th 0334 0602 0.3E 0343 0627 Sa 0.6E 0352 0622 0.3E 1353 1715 1.0 E Su M 1430 1759 0.8E 0826 1156 1.0F 0823 1158 Tu 0.7 F 0905 1230 0.9 F 0847 1214 0.6F 2046 2330 0.6 F 2142 1509 1838 1.1 E 1508 1847 0.9E 1539 1909 1.1E 1519 1856 0.9E 2221 2240 2249 2242 6 0223 0519 0.7E 21 0017 0.4 F 6 0101 0117 0.4 F 6 0137 0.75 21 0127 0.5 F 0809 1131 Th 0.9F 0305 0550 0.4E 0356 0642 0.6 E 0.3E F 0417 0645 Su 0441 0725 0.6E 0433 0708 0.4E M 1442 1806 1.0E Tu W 0827 1155 0.7 F 0921 1248 0.9 F 0907 1238 0.6F 1008 1325 0.8F 0940 1259 0.6F 2140 1506 1837 0.8 E 1600 1929 1.1E 1545 1924 0.9E 1628 1958 1.0 E 1558 1934 0.8E 2223 2310 2314 2333 2312 7 0022 0.6F 22 0058 0.4 F 7 0154 0.7 F 22 0156 0.5F 7 0228 0.7F 22 0204 0.6F 0314 0608 0.7E F 0349 0629 0.4E 0453 0739 0.6E 0500 0729 0.3E Sa M 0538 0825 0.6E 0855 1220 0514 0755 0.4E 0.9F W Th 0903 1232 Τυ 0.7 F 1020 1343 0.9 F 0955 1321 0.6F 1114 1421 0.7 F 1038 1346 0.5 F 1532 1857 1.0E 1542 1915 0.8E 1652 2021 1.0 E 1624 2003 0.8E 1718 2047 0.9E 1639 2012 0.8 E 2234 2303 2348 2342 8 0114 0.6F 23 0138 0000 0248 0235 0.5 F 8 0016 0318 0243 0.6F 0407 0659 0.6E Sa 0432 0710 0.4E 0552 0838 Su 0.6E 0543 0817 0.4E 0634 0925 0.6E 0557 0846 0.5E W Th F 0945 1310 0.9 F 0941 1310 0.7 F 1124 1440 0.8 F 1050 1407 0.6F 1223 1518 0.6F 1141 1436 0.5 F 1624 1949 1.0 E 1619 1954 0.8 E 1744 2113 0.9 E 1705 2042 0.8 E 1807 2136 0.8 E 1722 2052 0.7E 2328 2342 9 0208 0.6F 24 0220 0048 0342 0.7 F 24 0021 0315 0.5F 9 0058 0409 0.75 24 0014 0324 0501 0753 0.6E 0.7 F Su M 0516 0753 0.4E 0651 0941 0.6E 0627 0908 0.4E 0.6E 0729 1026 0642 0939 W Th 0.6E 1038 1403 0.9 F 1024 1352 Sa 0.6F 1232 1539 0.6F 1151 1457 0.5 F 1335 1617 0.5F 1248 1531 0.4 F 1717 2042 1.0E 1659 2034 0.8 E 1838 2206 0.9E 1750 2124 0.7 E 0 1857 2224 0.7E 1809 2136 0.7E 10 0022 0303 0.6F 25 0021 0302 0.4 F 10 0135 0437 0.7 F 0055 0357 0.6 F 0140 0458 10 0.7 F 0558 0850 0.6E 0049 0408 25 0.7 F M 0602 0839 0.4E 0751 1045 Tu 0.6E 0823 0.5 E 0712 1002 1126 0.6E Th F 0.6E 0731 1036 1136 1459 0.8 F 1113 1436 Su 0.6F 1345 1642 0.5 F 1259 1553 0.5 F 1449 1719 0.4 F 1359 1630 0.4 F 1811 2138 0.9 E 1741 2117 0.8E O 1933 2300 0.8 E 1838 2209 0.7E 1950 2313 0.6E O 1901 2223 0.6E 11 0116 0400 0.6F 26 0101 0346 0.5 F 11 0222 0531 0.7 F 26 0131 0442 0.6F 11 0220 0547 0.7F 26 0128 0456 0.8 F 0658 0951 0.5E Tu 0649 0930 0.4E 0848 1149 0.6E W 0800 1100 0.5E F 0914 1225 0.6E 0822 1135 0.7E 1240 1559 0.7 F M 1209 1526 0.5 F Su 1501 Sa 1746 0.5 F 1411 1653 0.4F 1601 1821 0.3F 1511 1732 0.4 F O 1908 2234 0.9E 1827 2202 0.7E 2030 2353 0.7EO 1932 2257 0.6E 2045 1958 2315 0.6E 12 0210 0459 0.6F 27 0140 0431 0.5F | 12 0306 0623 0.7F 27 0209 0529 0.7F12 0003 0.5€ 27 0211 0547 0.9F W 0801 1055 0.5 E 0738 1025 0.4E Th 0943 1251 0.6E 0850 1159 0.6E 0.7 F 0301 0634 0915 1234 Sa 0.8E 1349 1702 0.6 F Su M 1313 1621 TU 0.5 F 1615 1851 0.4 F 1524 1756 0.4 F 1002 1321 0.7E 1621 1838 0.3F 2007 2332 0.8E O 1917 2249 0.7E 2128 2030 2349 0.6E 1709 1922 0.3 F 2101 2143 13 0302 0558 0.6F 28 0220 0518 0046 0.6E 28 0250 0618 0.8 F 13 0053 0011 0.6E Th 0903 1202 0.5 E 0827 1123 0.5 E F 0349 0713 0.7 F 0941 1257 Su 0.7E 0341 0720 0.7 F 0300 0641 M 1503 1807 0.6F 0.97 Tu W 1422 1721 0.5 F 1034 1349 0.7E 1634 1901 0.4 F 1047 1412 0.7E 1009 1334 0.9E 2107 2012 2339 0.6E 1724 1953 0.4 F 2133 1809 2021 0.3F 1726 1943 0.4 F 2227 2244 2209 14 0030 0.7€ 29 0300 0606 0136 0.5€ 29 0043 0.6E 14 0142 0111 0.5E 0352 0654 0.6F 0918 1222 0.5 E 0431 0800 0.7 F 0335 0709 0.9F Sa 0421 0805 0.7 F 1003 1307 0.6E 0353 0737 0.9F M W Tu Th 1534 1823 0.4 F 1120 1442 0.7E 1032 1355 0.8 E 1129 1500 0.8 E 1104 1431 1.0E 1616 1912 0.5 F 2111 1825 2050 0.3F 1740 2004 0.4 F 1901 2116 0.3F 1825 2046 0.4F 2206 2324 2237 2345 2317 15 0125 0.7€ 30 0030 0225 0139 0.55 | 15 0231 0213 0.5 E Sa 0440 0748 0.6 F 0340 0655 0.7 F 0510 0844 0.7 F Su 0424 0802 0.9 F 0501 0847 Tu 0.7F 0451 0834 1058 1408 1.0F 0.6E Th F 1008 1321 0.6E 1203 1530 0.8E 1124 1451 1.0E 1209 1544 0.8 E 1158 1527 1.0E 1726 2014 0.5 F 1643 1926 0.5F 1919 2143 0.4 F 1840 2105 0.4 F 1946 2206 0.3F 1919 2145 0.5F 2304 2211 2341 31 0123 0.6E 31 0024 0315 0.5 0423 0744 0.77 M 0551 0930 1.0F Sa 1058 1417 0.8E 1250 1620 1.1 E 1748 2027 0.5 F 2009 2241 0.5 F 2311 Page 5
TABLE 2.-CURRENT DIFFERENCES AND OTHER CONSTANTS AND ROTARY TIDAL CURRENTS
In this publication, reference stations are those for which daily predictions are listed in Table 1. Those stations appearing in Table 2 are called subordinate stations. The principal purpose of Table 2 is to present data that will enable one to determine the approximate times of minimum currents (slack waters) and the times and speeds of maximum currents at numerous subordinate stations on the Atlantic Coast of North America. By applying the specific corrections given in Table 2 to the predicted times and speeds of the current at the appropriate reference station, reasonable approximations of the current at the subordinate station may be compiled. Locations and Depths Because the latitude and longitude are listed according to the exactness recorded in the original survey records, the locations of the subordinate stations are presented in varying degrees of accuracy. Since a minute of latitude is nearly equivalent to a mile, a location given to the nearest minute may not indicate the exact position of the station. This should be remembered, especially in the case of a narrow stream, where the nearest minute of latitude or longitude may locate a station inland. In such cases, unless the description locates the station elsewhere, reference is made to the current in the center of the channel. In some instances, the charts may not present a convenient name for locating a station. In those cases, the position may be described by a bearing from some prominent place on the chart. Although current measurements may have been recorded at various depths in the past, the data listed here for most of the subordinate stations are mean values determined to have been representative of the current at each location. For that reason, no specific current meter depths for those stations are given in Table 2. Beginning with the Boston Harbor tidal current survey in 1971, data for individual meter depths were published and subsequent new data may be presented in a similar manner. Since most of the current data in Table 2 came from meters suspended from survey vessels or anchored buoys, the listed depths are those measured downward from the surface. Some later data have come from meters anchored at fixed depths from the bottom. Those meter positions were defined as depths below chart datum. Such defined depths in this and subsequent editions will be accompanied by the small letter "d". Minimum Currents The reader may note that at many locations the current may not diminish to a true slack water or zero speed stage. For that reason, the phrases, "minimum before flood" and "minimum before ebb" are used in Table 2 rather than "slack water" although either or both minimums may actually reach a zero speed value at some locations. Table 2 lists the average speeds and directions of the minimums. Maximum Currents Near the coast and in inland tidal waters, the current increases from minimum current (slack water) for a period of about 3 hours until the maximum speed or the strength of the current is reached. The speed then decreases for another period of about 3 hours when minimum current is again reached and the current begins a similar cycle in the opposite direction. The current that flows toward the coast or up a stream is known as the flood current; the opposite flow is known as the ebb current. Table 2 lists the average speeds and directions of the maximum floods and maximum ebbs. The directions are given in degrees, true, reading clockwise from 000° at north to 359° and are the directions toward which the current flow.
102 TABLE 2.-CURRENT DIFFERENCES AND OTHER CONSTANTS AND ROTARY TIDAL CURRENTS
Differences and Speed Ratios Table 2 contains mean time differences by which the reader can compile approximate times for the minimum and maximum current phases at the subordinate stations. Time differences for those phases should be applied to the corresponding phases at the reference station. It will be seen upon inspection that some subordinate stations exhibit either a double flood or a double ebb stage, or both. Explanations of these stages can be found in the glossary located elsewhere in this publication. In those cases, a separate time difference is listed for each of the three flood (or ebb) phases and these should be applied only to the daily maximum flood (or ebb) phase at the reference station. The results obtained by the application of the time differences will be based upon the time meridian shown above the name of the subordinate station. Differences of time meridians between a subordinate station and its reference station have been accounted for and no further adjustment by the reader is needed. Summer or daylight saving time is not used in this publication. The speed ratios are used to compile approximations of the daily current speeds at the subordinate stations and refer only to the maximum floods and ebbs. No attempt is made to predict the speeds of the minimum currents. Normally, these ratios should be applied to the corresponding maximum current phases at the reference station. As mentioned above, however, some subordinate stations may exhibit either a double flood or a double ebb or both. As with the time differences, separate ratios are listed for each of the three flood (or ebb phases) and should be applied only to the daily maximum flood (or ebb) speed at the reference station. It should be noted that although the speed of a given current phase at a subordinate station is obtained by reference to the corresponding phase at the reference station, the directions of the current at the two places may differ considerably. Table 2 lists the average directions of the various current phases at the subordinate stations. Rotary Tidal Currents Pages 152 and 153 contain listings of data for those stations which exhibited rotary current patterns. Briefly, a rotary current can be described as one which flows continually with the direction of flow changing through all points of the compass during the tidal period. A more complete description can be found in the glossary located elsewhere in this publication. The average speeds and directions are listed in half-hour increments as referred to the predicted times of a particular current phase at a reference station in Table 1. The Moon, at times of new, full, or perigee may increase speeds 15 to 20 percent above average; or 30 to 40 percent if perigee occurs at or near the time of new or full Moon. Conversely, the Moon at times of quadrature or apogee may decrease the speeds 15 to 20 percent or 30 to 40 percent if they occur together. Near average speeds may be expected when apogee occurs near or at new or full Moon, or when perigee occurs at or near quadrature. The directions of the currents are given in degrees true, reading clockwise from 000° at north to 359° and are the directions toward which the water is flowing.
TABLE 2.-CURRENT DIFFERENCES AND OTHER CONSTANTS AND ROTARY TIDAL CURRENTS
Example of the Use of Table 2 Suppose we wish to calculate the times of the minimum currents and the times and speeds of the maximum currents on a particular morning at the location listed in Table 2 as Winthrop Head, 1.1 n. mi. east of. From Table 2 we learn that the reference station is Boston Harbor whose morning currents are listed below. Currents for Winthrop Head can be approximated by using the Table 2 corrections as indicated.
* this minimum current phase is seen to occur just before midnight of the previous day. Table 2 states that the average speeds and directions of the minimums before flood and ebb are 0.3 knots at 103° and 0.2 knots at 297° ; respectively. The average directions of the maximum flood and maximum ebb are 205° and 019°; respectively.
1 6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 81
Brazil Rock, 6 miles east of Cape Sable, 3 miles south of Cape Sable, 12 miles south of Blonde Rock, 5 miles south of Seal Island, 13 miles southwest of Cape Fourchu, 17 miles southwest of Cape Fourchu, 4 miles west of Lurcher Shoal, 6 miles east of Lurcher Shoal, 10 miles west of Lurcher Shoal, 10 miles northwest of Brier Island, 5 miles west of Brier Island, 15 miles west of Gannet Rock, 5 miles southeast of Boars Head, 10 miles northwest of Prim Point, 20 miles west of Cape Spencer, 14 miles south of BAY OF FUNDY ENTRANCE
43° 22' 43° 20' 43° 11' 43° 15' 43° 16' 43° 34' 43° 47' 43° 52' 43° 46' 43° 59' 44° 13' 44° 17' 44° 29' 44° 31' 44° 44' 44° 58' 44° 45.2'
65° 18' 65° 38' 65° 37' 65° 59' 66° 15' 66° 24' 66° 15' 66° 21' 66° 42' 66° 37' 66° 30' 66° 44' 66° 41' 66° 23' 66° 15' 65° 57' 66° 55.9'
-202 -302 -1 12 -1 02 -0 17 +0 38 -O 12 +0 08 +0 23 -002 +0 43 -0 42 +0 38 +0 48 +0 38 +0 51
-200 -1 56 -2 10 -1 21 -1 00 -0 46 -0 50 -0 36 +0 10 +0 39 + 45 +0 44 0 00 +0 09 +0 30 +0 39 +0 30 -0 34 +0 30 +0 49 +0 50 +0 54 -O 15 +0 14 +0 30 +0 09 +0 55 +0 59 +0 45 +0 54 +0 55 +0 57 Daily predictions
-200 -2 10 -100 -0 50 +0 10 +0 45 000 +0 30 +0 30 +0 30 +0 50 -O 15 +0 30 +0 55 +0 45 +0 55
0.4 1.0 0.7 0.9 1.1 0.5 0.9 0.9 0.6 0.8 1.2 0.6 1.1 0.8 0.7 0.7
0.4 0.8 0.7 0.8 0.7 0.5 0.7 0.8 0.7 0.5 1.0 0.5 1.6 0.8 0.6 0.7
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
1.0 275° 2.2 275° 1.7 285° 2.0 310° 2.6 325° 1.2 355° 2.0 000° 2.0 355° 1.4 000° 1.8 005° 2.7 005° 1.4 060° 2.6 040° 1.9 020° 1.6 040° 1.7 050° 2.3 032°
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
1.0 050° 2.0 095° 1.6 090° 2.0 1.6 140° 1.2 145° 1 1.7 175° 1.8 175° 1.6 160° 1.2 175° 2.5 185° 1.2 250° 3.9 230° 2.0 205° 1.4 235° 1.6 245° 2.4 212°
86 91 96 101 106 111 116 121 126 131 136 141 146 151
MAINE COAST Time meridian, 750 W Eastport, Friar Roads Western Passage, off Kendall Head Western Passage, off Frost Ledge Pond Point, 7.6 miles SSE of Moosabec Reach, east end Moosabec Reach, west end Bar Harbor, 1.2 miles east of <1> Casco Passage, east end, Blue Hill Bay Hat Island, SE of, Jericho Bay Clam I., NW of, Deer I. Thorofare Grog Island, E of, Deer Island Thorofare Russ Island, N of, Deer Island Thorofare Crotch Island-Moose Island, between <58> Isle au Haut, 0.8 mile E of Rich's Pt East Penobscot Bay Mark Island, north of Widow Island-Stimpson Island, between Eagle Island, 0.4 nautical miles of Burnt Island-Oak Island, between Butter I., 0.3 nautical mile SE of
44°54' 44° 55.9' 44° 57.9' 44° 20.1'. 44°31.71'. 44° 31.25 44° 23.0' 44° 11.7' 44° 08.0 44° 09.87' 44° 09.72' 44° 09.18 44° 08.85' 44° 05'
66° 59' 67° 00.0' 67° 01.9' 67° 30.2 67° 34.36 67° 39.00' 68° 10.0' 68° 27.9' 68° 29.7' 68° 36.23' 68° 37.23 68° 38.78' 68° 40.58' 68° 35'
000 0 00 000 000 +0 27 +0 11 +0 13 +0 40 +0 33 +0 04 -0 16 +0 15 +0 1 -0 20 -1 32 -005 -245 -3 08 -3 13 -3 39 -143 -143 -2 00 -144 +0 30 +0 48 -1.49 -144 -102 -1 58 -102 -0 35 -0 50 -1 20 -2 14 -0 15 -0 57 -2 46 -2 16 -2 22 -2 27 -331 -2 12 -2 10 -2 29 -3 16 Currents are unidirectional -053 -107 -107 -1 19
1.2 1.4 0.9 0.2 0.4 0.4 0.1 0.3 0.4 0.1 0.1 0.2
1.2 1.3 0.7 0.5 0.4 0.5 0.3 0.3 0.5 0.1 0.1 0.2
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
3.0 210° 3.2 319° 2.1 330° 0.5 015° 1.0 110° 1.0 092° 0.2 328° 0.7 086° 0.9 318° 0.2 004° 0.2 020° 0.4 074°
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0
040° 3.1 142° 1.7 150° 1.2 215° 1.0 258° 1.2 253° 0.7 148° 0.7 284° 1.3 124° 0.2 199° 0.3 235° 0.6 265°
-0 18 -101 -2 27 -0 22 -0 43 -049 +0 04 -1 08 -0 18 -0 55 -2 20 -1 46 -0 18 -1 19 -2 22 -0 57 -243 -2 14 -0 25 -1 36 -1 31 -0 23 +0 11 -0 17 -0 53 -0 56 -1 44 -1 22 -1 25 -101 -0 45 0 27 -0 55 -0 55 -1 14 -0 54 -0 26 -1 19 See Rotary tidal currents, table 2. -2 45 -1 37 -1 56 -2 37 -043 +0 12 +0 02 -0 19 See Rotary tidal currents, table 2. -0 13 -002 -0 33 -051 -0 13 -037 +0 33 -052 See Rotary tidal currents, table 2. -0.46 -0 22 -0 55 -107 -144 -1 13 -1 56 -1 34
181 186 191 196 201 206 211 216 221 226 231 236 241
Bradbury Island, ESE of Compass Island, 0.4 nmi. ENE of Scrag Island, 0.3 nautical mile SW of Great Spruce Head Island, west of Horse Head Island, 0.2 nmi. ENE of Pickering Island, south of Little Eaton Island, NNE of Pickering Island, north of Hog Island, ESE of Little Deer I.-Sheep I., between Swains Ledge, WSW of Swains Ledge, 0.3 nautical mile SW of Pond Island-Western Island, between
14 14 14 14 14 14 14 14 14 14 14 14 14
44° 14.03' 44° 13.00' 44° 13.33 44° 14.30' 44° 15.07' 44° 15.63' 44° 16.45' 44° 16.48' 44° 16.52' 44° 16.78' 44° 16.97' 44° 17.13' 44° 17.58'
68° 44.07' 68° 51.33' 68° 50.62' 68° 50.18 68° 50.67' 68° 45.38' 68° 43.87' 68° 45.28' 68° 46.87' 68° 43.43 68° 45.28 68° 43.87' 68° 49.00'
Page 6
251 256 261 266 271 276 281 286
14 14 14 14 14 14 14 14 15 40
East Penobscot Bay-cont. Birch Island, northwest of Pond Island, north of Howard Ledges, ENE of, Eggemoggin Reach Howard Ledges, NE of, Eggemoggin Reach Spectacle Island, 0.2 nmi. NW of Pumpkin Island, north of Isleboro Harbor, Penobscot Bay Thrum Cap I., E of, East Penobscot Bay Turtle Head Pt., ESE of, Penobscot Bay . do. Castine Harbor <59> . do. do. Dice Head, west of, Penobscot Bay do. . do. Sears Island, S of, Penobscot Bay <62> do. Jones Point, Bagaduce River <60> Fort Point, Cape Jellison, Penobscot Bay <60>
44° 18.17' 44° 18.17' 44° 18.28' 44° 18.30' 44° 18.47 44° 18.80' 44° 18.86' 44° 19.40' 44° 22.57' 44° 22.57' 44° 22.75' 44° 22.75' 44° 22.75' 44° 22.77 44° 22.77' 44° 22.77' 44° 25.12' 44° 25.12' 44° 25.55' 44° 27.95 44° 27.95' 44° 27.83 44° 31.73' 44° 31.73' 44° 31.73'
68° 45.35' 68° 48.60' 68° 42.63' 68° 42.08' 68° 47.33' 68° 44.42' 68° 53.35 68° 44.80' 68° 51.28' 68° 51.28' 68° 48.62 68° 48.62' 68° 48.62' 68° 50.72 68° 50.72 68° 50.72' 68° 53.25' 68° 53.25 68° 45.50 68° 47.73 68° 47.73' 68° 47.80' 68° 48.30 68° 48.30' 68° 48.30'
40 60 15 58 96 15 40 15 15 40 45 15 35 60
0.7 338° 0.4 319° 1.2 075° 1.4 087° 1.5 017° 0.4 028° 0.5 334° 0.6 312° 0.4 012° 0.4 080° 4.2 053° 1.0 003° 1.1 356° 0.9 006° 1.5 339° 1.9 338° 1.3 322° 0.8 327° 2.0 319° 0.7 273°
-1.44 -131 -0 56 -1 30 Current weak and variable Current weak and variable Current weak and variable Current weak and variable -314 -2 10 -1 54 -243 See Rotary tidal currents, table 2. Current weak and variable -1 00 -1 04 -0 36 -144 -1 19 -1 12 -131 -1 14 +0 11 0 24 -0 25 -0 41 -101 -047 -0 33 -1 09 -147 -0 38 -0.47 -1 30 -2 16 1 17 -1 27 -1 30 -0 33 -0 33 -0 35 -0 08 +0 13 -0 26 -0 26 -0 18 +0 10 -0 15 -1.44 -0 57 -0 37 +0 03 0 39 -021 -0 08 -0 15 0 15 -007 -2 07 -0 19 -0 30 -0 48 -2 31 -0 43 -0 22 -109 +1 06 -001 -1 32 -0 23 -1 29 -0 20 -1 14 -0 16 -2 50 -4 17 -1 21 -347 -2 35 -2 28 -0 25 -0 39 +1 54 +0 13 -154 -3 53 -2 47 -024 +0 42 +0 09 -1 26 -0 19 -0 13 -0 20 -1 39 -0 20 -1 05 +0 04 -0 56 3 06 -201 +0 04 -0 19 -2 27 -0 39 -3 17 -1 37 -2 14 +0 22 +0 24 -1 17 -3 05 -0 59 -321 -1 54 -1 55 +0 16 +0 08 -011 -2 18 -0 50 -307 -131 -147 +0 33 +0 11
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
. do. Verona Island, west of, Penobscot River <61> do. do.
0.3 0.3 0.2 0.3 0.5 0.6 0.6 0.5 0.7 0.4 0.2 0.2 0.2 0.2 0.3 0.2 0.2 0.2 0.2 0.2 1.8 1.8 0.4 0.4 0.5 0.3 0.4 0.3 0.6 1.5 0.8 1.2 0.6 0.2 0.4 0.0 0.9 0.4 0.3 0.5 0.3 0.8 0.7 1.1 0.8 1.0 0.8 0.3 0.0 0.9 0.4 0.4 0.2 0.3 0.7 0.8 0.4 0.3 0.2 0.0 0.7 0.7 0.2 0.6 0.1 0.3 0.6 0.8
0.8 171° 0.8 155° 1.4 252° 1.2 238° 1.0 199° 0.5 198° 178° 0.6 135° 237° 0.4 270° 4.2 237° 1.0 166° 0.7 222° 0.6 206° 3.6 176° 3.0 176° 0.6 182° 0.0 192° 1.0 173° 1.1 115° 0.6 105° 1.8 116° 2.6 099° 2.5 098° 0.7 188° 0.0 193° 2.1 188° 1.0 233° 0.7 225° 1.8 219° 0.7 244° 0.1 247° 1.7 258° 1.3 136 0.8 137° 2.0 139°
Verona I., N of, Easter Ch., Penobscot R <61>.
Bucksport, Penobscot River <61> . do. Winterport, Penobscot Bay <60>
44° 34.27' 44° 34.27' 44° 37.88
68° 48.38' 68° 48.38 68° 50.52'
Oak Point, Penobscot River <60>
0.8 038° 0.5 039° 1.5 026° 0.8 318° 0.4 309 1.6 337° 0.6 310° 0.3 316° 1.4 319°
Snub Point, Penobscot River <60>
44° 02.47
68° 45.48' 68° 45.48' 68° 41.55 68° 41.55' 68° 41.55'
+0 14 -1 20 0 00 -1 33 -2 34
0 17 -0 39 +0 20 -0 55 -043
-0 26 --032 -0 16 -0 40 -1 25
-0 17 -1 15 -0 38 -0 54 - 1 19
0.7 354° 0.6 317° 0.4 344° 0.6 337° 0.7 345°
197° 0.6 180° 1.1 135° 0.5 165° 0.3 215°
Isle au Haut Bay Triangle Ledge, SSE of do. Moore Harbor, W of do. do. The Reach, NNE of, Green Island White Islands, northeast of Fisherman Island Passage Crotch Island, east of Laireys Island, south of Sheep Island Leadbetter I., SSW of southern tip Leadbetter Island, E of southern tip Leadbetter Island, northwest tip of Dodge Point-Monroe Island, between Dogfish Island, NNE of Rockland Harbor Breakwater Browshead, Vinalhaven Island, NNW of Crabtree Pt., North Haven I., NNE of Fox Island Thorofare Mark Island, 0.3 nmi., SSE of Saddle Island, northwest of Mark Island, 0.3 nautical mile, N of Lasell Island, SSW of East Goose Rock, NNE of Camden Harbor Entrance
376 381 386 391 396 401 406 411 416 421 426 431 436 441 446 451 456 461 466 471 476
14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14
44° 02.57 44° 03.00' 44°03.12 44°03.62 44°03.62' 44° 03.88 44° 04.07' 44° 04.15' 44° 05.03' 44° 05.12' 44° 05.52 44° 06.13' 44° 06.78' 44° 06.90' 44° 07.62' 44° 10.00' 44° 10.85' 44° 10.87' 44° 11.20 44° 11.37' 44° 12.17'
68° 51.58' 68° 54.40' 69° 02.70' 68° 54.43' 68° 53.78' 69° 03.47' 68° 53.90' 68° 53.62 68° 54.67' 69° 02.62' 68° 54.80' 69° 04.67' 68° 54.73' 68° 55.42' 68° 53.58' 68° 58.83' 68° 57.30' 68° 58.92' 68° 56.82' 68° 58.08' 69° 02.80'
0.2 0.2 0.2 0.2 0.2 0.3 0.8 0.8 0.2 0.4 0.2 0.3 0.6 0.5 0.2 0.2 0.3 0.4 0.2 0.2 0.2 0.2 0.1 0.2 0.1 0.1 0.1 0.1 0.1 0.2 0.2 0.2 0.1 0.2
0.0 0.2 0.1 0.0 0.1 0.0 0.0 0.1 0.0 0.2 0.1 0.1 0.1 0.2 0.0 0.2 0.2
0.4 284 0.4 322° 0.6 053° 1.9 343° 0.4 335° 0.5 023° 1.4 320° 016 0.4 015° 0.5 325° 0.3 315° 0.2 016 0.3 003° 0.2 070° 0.4 044° 0.3 010°
0.0 0.0 0.1 0.1 0.1 0.0 0.0 0.2 0.1 0.0 0.1 0.1
0.4 111° 0.6 165° 0.7 240° 2.0 163° 0.9 155° 0.8 220° 1.3 126° 0.6 175° 1.0 214° 0.5 205° 0.4 147° 0.4 097° 0.2 221° 0.2 228° 0.4 278° 0.5 246° 0.4 225°
105° 135° 092° 045° 220° 100° 150°
-3 23 -1 10 -1 55 -2 55 -1 48 -2 18 -1 55 -2 08 -244 -2 37 -2 26 -2 28 -0 49 -0 55 -1 21 -1 09 -0 48 -0 18 -0 51 -1 51 -244 -1 19 -1 57 -2 16 -0 43 -0 39 -0 28 -1 32 -0 18 -0 43 +0 37 -0 13 --048 -041 -0 53 -1 12 -343 -1.43 -2 55 -307 -2 14 -2 27 -2 55 -2 06 -1 18 -0 30 -104 -0 39 -1.48 -1 22 -0 55 -0 56 -0 43 -1 18 -0 55 -101 -3 13 -241 -3 25 -3 25 -141 -1 31 1 59 -1 26 -343 -2 31 -356 -2 13 See Rotary tidal currents, table 2. -147 - 1 31 -2 54 -1 46 -3 45 -243 -357 -3 13 -244 -4 06 -2 26 -1 56 -3 10 -1 19 -1 30 -100 +0 32 -1 25 -2 17 -052 -1 23 -1 13 -107 -0 58 -1 23 -0.41 -2 29 -1 20 -147 - 149 -0 59 0 28 -0 19 0 33 -1 02 -0 29 -0 10 -0 27 +0 33 -O 13 -0 56 -0 35 -1 14 -052 -048 -1 11 -1 13 -0 23 -0 55 -207 -104 -1 00 -1 36 -1 25 +0 26 -0 54 -1 22 -1 23 -024 -0 14 -0 24 -0 28 -1 14 -0 59 -041 -051 -0 46 -0 39 -0 18 -053 -1 22 0 47 -0 24 -0 59 -0 59 -1 20 -1 11 -0 59 -343 -1 55 -2 53 - 2 16 -1 02 1 23 -2 03 -1 18 -1.46 1 12 -1 36 -133 -0 34 -021 -0 35 - 1 05 -051 -0 26 -0 15 -0 43 -0 28 -0 30 -0.47 -0 39
Ensign Island, SSE of Warren Island, northwest of Ducktrap Harbor, northeast of do. Ducktrap Harbor, NNE of do. Ducktrap Harbor, NNE of . do. Flat Island, SSW of Isleboro Harbor, NE of, Penobscot Bay Isleboro Harbor, NE of, Penobscot Bay Head of the Cape, 0.8 nmi. W, of Penobscot Bay . do. Head of the Cape, NNW of, Penobscot Bay do. . do. Ram Island, west of, West Penobscot Bay Temple Heights, NE of, W Penobscot Bay Temple Heights, NNE of, W Penobscot Bay do. .do.
130 14 75 15 15 130 15 30 130
0.2 0.2 0.2 0.2 0.1 0.1 0.1 0.2 0.2 0.1 0.2 0.1 0.2 0.2 0.2 0.1 0.2 0.1 0.2 0.1 0.2 0.2 0.3 0.2 0.2 0.2 0.1 0.1 0.1 0.1 0.2 0.2 0.2 0.1 0.3 0.2 0.2 0.1 0.2 0.2 0.2 0.1 0.2 0.2 0.2 0.1 0.3 0.3 0.2 0.2 0.2 0.2
44° 13.40' 44° 16.55' 44° 18.00' 44° 18.00' 44° 18.27' 44° 18.27 44° 18.30' 44° 18.30 44° 18.83' 44° 18.97' 44° 19.03' 44° 19.25' 44° 19.25' 44° 19.07 44° 19.07' 44° 19.07' 44° 21.28' 44° 21.38' 44° 21.38 44° 21.45' 44° 21.45' 44° 21.45
68° 57.52' 68° 57.22' 68° 56.38' 68° 56.38' 68° 57.35' 68° 57.35' 68° 57.55' 68° 57.55 68° 55.45' 68° 52.78' 68° 52.67' 68° 50.80' 68° 50.80' 68° 50.17 68° 50.17' 68° 50.17 68° 54.95 68° 55.33' 68° 55.33' 68° 56.62' 68° 56.62 68° 56.62
0.4 022" 0.4 000° 0.2 354° 0.2 003° 0.3 009° 0.3 022° 0.5 036° 0.5 355° 0.4 014 0.4 014 0.5 038° 0.4 058 0.6 013° 0.4 045° 0.3 004° 0.1 334° 0.4 325° 0.4 015° 0.6 332 0.5 356° 0.3 353° 0.4 004° 0.4 000° 0.4 354° 0.6 005° 0.6 344° 0.5 333°
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.3 220° 0.3 248° 0.4 185° 0.3 237° 0.3 203° 0.3 233° 0.5 202° 0.5 193° 0.4 230° 0.3 166° 0.3 154° 0.4 125° 0.3 166° 0.4 163° 0.3 176° 0.4 172° 0.3 189° 0.4 189° 0.3 175° 0.7 175° 0.4 188° 0.5 164°
Endnotes can be found at the end of table 2.
209° 224° 189° 211° 200° 066° 282°
88 81 15 25 40 40 71 40 41 25 20 10 15 28 25 10 34 53
631 636 641 646 651 656 661 666 671 676 681 686 691 696 701 706 711
43° 42.7' 43° 38.2 43° 40.2' 43° 40.27' 43° 40.27' 43° 40.27' 43° 40.45' 43° 41.2' 43° 41.33' 43° 42.2' 43° 42.4' 43° 42.5' 43° 42.5' 43° 43.5' 43° 44.2' 43° 44.3' 43° 44.3 43° 45.4' 43° 37.8' 43° 37.9' 43° 38.7' 43° 39.0' 43° 39.2
Broad Sound, west of Eagle Island Ram Island, 1.6 nautical miles east of Hussey Sound, southwest of Overset Island Hussey Sound, SW of Overset Island do. do. Hussey Sound, SE of Pumpkin Nob Hussey Sound, east of Crow Island Hussey Sound, east of Crow Island Long Island, 0.65 nautical mile NW of Little Chebeague Island, southeast of Long Island, 1.3 nautical miles NW of Waites Landing, northeast of Clapboard Island, 0.5 nmi. northwest of Sturdivant Island, southeast of Sturdivant Island, west of Cousin I. and Great Chebeague I., between Littlejohn Island, Town Landing Cushing Island, 0.24 nautical mile SW of Portland Hbr. ent., SW of Cushing Island Portland Bridge, center of draw Spring Point, 0.2 nautical mile east of House Island, east of Portland Breakwater Light 0.3 mi. NW of <1> <4> Grand Trunk Wharves, off ends <1> Diamond I. Ledge, midchannel SW of Fore River, mouth of Diamond Island Pass <57> Little Diamond Island, 0.15 nmi. west of Back Cove, swing bridge
70° 03.8' 70° 09.2' 70° 10.5 70° 10.52' 70° 10.52 70° 10.52' 70° 10.78' 70° 10.8' 70° 10.79' 70° 09.9' 70° 08.7' 70° 10.7' 70° 12.5' 70° 12.0' 70° 10.5' 70° 11.5' 70° 08.3 70° 07.4 70° 12.5'70° 12.7'. 70° 15.5' 70° 13.1' 70° 12.3
-1 16 -006 -1 37 -1 28 -1 39 -1 58 -2 21 -2 22 -2 18 -145 -240 -2 16 -2 39 -2 34 -2 12 -1 34 -3 42 -4 58 -1 47 -1.43 2 28 1 42 -1 30
-105 +0 10 -1 29 -1 18 -1 19 -1 16 -1 29 -0 35 -0 42 -1 26 -1 39 -0 18 -2 00 -2 00 -1 12 0 52 -1 32 -2 34 -1 32 -1 11 -1 28 1 36 - 1 09
0.2 0.3 0.3 0.3 0.1 0.1 0.0 0.0 0.0 0.1 0.0
-1 27 -0 12 -1 14 -0 58 -1 06 -1 05 -1 32 -1 15 -0 55 -1 12 -1 53 -0 46 -2 12 -3 28 -104 -1 23 -1 28 -1 59 -1 29 -1 20 -131 -1 45 -2 07
-0 59 +0 39 -1 12 -1 30 -1 32 -1 32 -1 14 -1 27 -1 24 -0 30 -1 48 -1 36 -1 31 -3 24 -0 31 -0 48 -1 55 -2 25 -134 -0 58 -1 30 -1 18 -1 06
0.8 0.7 0.2 0.4 0.9 0.6 0.9 0.6 0.9 0.6 0.9 0.5 1.0 0.5 0.8 0.4 0.7 0.4 0.2 0.1 0.8 0.5 0.3 0.1 0.1 0.1 0.1 0.1 0.2 0.1 0.2 0.2 0.2 0.0 0.3 0.1 0.8 0.5 0.8 0.6 0.5 0.3 0.7 0.5 0.5 0.4
0.0 0.1 0.0 0.0 0.0 0.1 0.1 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1
0.9 010° 0.3 302° 1.1 311° 1.1 316° 1.1 318° 1.1 314° 1.2 346° 1.0 004° 0.9 016° 0.3 015° 0.9 216° 0.4 330° 0.1 328° 0.1 022° 0.2 013° 0.3 017° 0.2 041° 0.4 063° 0.9 297° 1.0 322° 0.6 219° 0.9 352° 0.6 012°
1.3 168° 0.6 165° 1.1 151° 1.2 153° 1.1 155° 1.0 154° 0.9 168° 0.8 193° 0.8 197° 0.3 176° 0.9 051° 0.2 192° 0.2 168° 0.2 232 0.1 216° 0.3 213° 0.1 211° 0.1 252° 1.0 135° 1.1 154° 0.5 044° 0.9 179° 0.7 175°
0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0
Endnotes can be found at the end of table 2.
+2 15 +1 05 -002 0 00 -1 00 +0 12
781 786 791 796 801 806 811 816 821 826 831 836 841 846 851 856 861 866 871 876 881 886 891 896 901
Odiornes Point, NNE of Odiornes Point, northeast of Kitts Rocks, WSW of <64> Kitts Rocks, 0.2 mile west of Little Harbor entrance Whaleback Reef, west of PORTSMOUTH HARBOR ENT. (off Wood I.) Wood Island, northwest of Fort Point Salamander Point, north of Salamander Point Hick Rocks and Clark Island, between Kittery Point Bridge Jamaica Island, northeast of Seavey Island, north of Clark I. and Seavey I., between <5> Clark Island, south of Clark Island, southwest of Seavey Island, south of Marvin Island and Goat Island, between Henderson Point, SSW of Henderson Point, west of Shapleigh Island Bridge, south of Pierces Island, northeast of Off Gangway Rock Badgers Island, east of Badgers Island, southwest of
+1 45 +0 49 +0 05 +0 37 +0 07 +0 08 000 0 00 -100 -1 00 +0 18 +0 11 Daily predictions 000 +0 31 +0 05 +0 05 +0 35 +0 34 +0 10 +0 10 -0 50 -0 35 -1 10 -1 10 -0 25 -0 25 +0 15 +0 15
43° 02.95 43° 03.00' 43° 03.10' 43°03' 43° 03' 43° 03.50' 43° 03.8' 43° 03.95' 43°04' 43° 04.58 43° 05' 43° 05' 43° 05 43° 05' 43°05' 43° 05' 43° 04.43' 43° 04.50' 43° 04' 43°04' 43° 04.40' 43° 05' 43° 04.18' 43° 04.55' 43°05' 43° 05' 43°05'
70° 42.50' 70° 42.10' 70° 41.80 70° 42' 70° 43' 70° 42.27' 70° 42.3' 70° 42.30' 70° 42' 70° 43.02' 70° 43' 70° 43' 70° 43' 70° 43' 70° 44' 70° 44' 70° 43.48' 70° 43.67' 70° 44' 70° 44' 70° 44.32' 70° 44' 70° 44.30' 70° 44.48' 70° 45' 70° 45' 70° 45'
+0 02 +0 05 +0 14 +0 10 -0 35 -1 10 -0 25 +0 15
-0 42 +0 05 +0 47 +0 10 -0 50 -1 10 -0 25 +0 15
0.8 183° 1.0 156° 0.8 133° 1.6 175° 1.1 130° 1.5 1440 1.8 195° 1.3 199° 2.0 130° 0.8 091° 1.3 085° 0.8 195° 1.1 200° 1.0 135° 1.8 080°
0.0 0.1 238° 0.2 191° 0.0 0.0 0.0 0.0 0.2 291° 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 228° 0.0 0.0 0.1 243° 0.0 0.0 0.0
0.5 339° 0.6 320° 0.7 314° 0.8 325° 0.7 310° 0.7 340° 1.2 355° 1.2 358° 1.5 350° 1.4 257° 1.3 260° 0.9 335° 0.8 020° 1.0 315° 1.4 260° 1.8 200° 1.6 270° 0.7 263° 3.0 260° 1.2 160° 1.6 306° 2.6 340° 0.8 178° 2.8 325° 2.1 280° 1.1 240° 3.3 330°
0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.1 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
1.0 0.7 1.2 1.1 1.1 0.5 1.1 0.7 0.8 0.4 0.7 0.6 0.8 0.7 1.2 1.0 1.5 1.3 1.3 0.6 0.5 2.5 2.1 1.0 0.4 1.3 1.0 2.2 1.3 0.7 0.4 2.4 0.7 1.7 0.9 0.2 2.7 2.0
+0 23 +0 21 +0 15 -1 00 +0 04 +0 30 -0 50 -O 18 +0 30 +0 25 +0 30
+0 22 -0 14 +0 15 -1 00 +1 11 +0 30 -0 27 +0 25 +0 30 +0 25 +0 30
+0 36 +0 34 +0 15 -1 00 +0 15 +0 30 -053 +0 39 +0 30 +0 25 +0 30
+0 33 -004 +0 15 -1 00 +0 38 +0 30 -0 35 -0 19 +0 30 +0 25 +0 30
2.3 0.8 070° 3.8 090° 0.8 340° 1.8 133° 2.3 170° 0.7 348° 1.3 144° 3.0 110° 0.4 050° 3.7125°
10 10 10 10 10 10 10 10 45 80 15 25 45 70 15 25 65 10 45 60 15 10 10 10 10
42° 40.1' 42° 34.9' 42° 36.6' 42° 30' 42° 28.75' 42° 28.45' 42° 27.53' 42° 27.24' 42° 26.85' 42° 26.25 42° 25.85' 42° 26.00' 42° 26.00' 42° 26.00' 42° 25.23' 42° 25.23' 42° 23.83' 42° 23.83' 42° 24.63' 42° 24.63' 42° 24.63' 42° 24.12' 42° 24.12' 42° 24.12' 42° 24.57' 42° 25.13 42° 25.87' 42° 26.58' 42° 27.27' 42° 25.97' 42° 26.52 42° 22.17' 42° 22.17 42° 21.93' 42° 21.30' 42° 21.30'
70° 41.1' 70° 40.5' 70° 40.4' 70° 49' 70° 51.68' 70° 51.55' 70° 50.70' 70° 53.70' 70° 54.84' 70° 53.93' 70° 54.20 70° 52.02' 70° 52.02' 70° 52.02 70° 53.63 70° 53.63' 70° 51.17' 70° 51.17' 70° 54.13 70° 54.13' 70° 54.13' 70° 55.07' 70° 55.07' 70° 55.07' 70° 56.53' 70° 57.25' 70° 56.83' 70° 56.52 70° 56.78' 70° 57.53' 70° 57.62' 70° 55.42' 70° 55.42' 70° 56.52' 70° 55.90 70° 55.90'
+0 42 +0 49 +0 58 +0 03 -0 28 +0 01 -0 29 -0 36 -0 06 +0 05 -O 15 -0 39 +1 09 +1 09 +1 09 +1 09 See Rotary tidal currents, table 2. See Rotary tidal currents, table 2. See Rotary tidal currents, table 2. See Rotary tidal currents, table 2. See Rotary tidal currents, table 2. See Rotary tidal currents, table 2. See Rotary tidal currents, table 2. +0 32 +0 49 +0 15 +1 00 -0 21 +1 04 +1 14 -0 31 0 25 +1 04 +1 15 -0 31 +0 04 -041 +0 15 +0 22 +003 -0 26 +0 08 +0 29 +0 04 +1 04 +1 13 +0 14 -0 22 -004 +0 19 -101 +0 53 +0 55 +0 42 -001 +0 34 +0 34 +0 57 +0 29 --037 -0 59 +0 14 -0 31 0 22 +1 20 +0 58 0 14 -0 29 -O 10 +0 52 0 29 -0 29 -0 10 +0 31 -0 59 See Rotary tidal currents, table 2. See Rotary tidal currents, table 2. -002 -0 26 +1 32 +0 46 +004 -O 17 +1 00 +0 27 +0 29 -0 26 +2 35 +1 25 +0 05 +0 19 +1 08 +0 41 +0 43 +0 29 +1 00 +0 34 -001 +1 05 +0 26 -002 -0 11 +0 50 +0 36 +0 28 -1 12 +0 19 +0 31 -1 46 -0 52 -O 57 -0 14 -0 25 -1 19 -0 59 -0 12 -0 13
0.6 0.3 0.2 0.4 0.4 0.3 0.2 0.5 0.4 0.3 0.7 0.3 0.2
0.7 252° 0.3 250° 0.2 238° 0.5 205° 0.4 198° 0.3 253° 0.2 261° 0.5 239° 0.5 224° 0.4 271° 0.7 259° 0.4 251° 0.3 250°
0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0
0.7 0.2 0.2 0.6 0.5 0.3 0.2 0.5 0.4 0.3 0.7 0.3 0.2
144° 070° 077° 045° 027° 074° 090° 063° 048° 035° 066° 086 091°
Nahant, 0.4 n.mi. east of East Point do. Nahant, 1 n.mi. SE of East Point .do. Pea Island, 0.4 n.mi. southeast of . do. do. Bass Point, 1.2 n.mi. southeast of do. do. Bass Point, 0.5 n.mi. SSW of Bass Point, 0.7 n.mi. west of Little Nahant Cupola, 0.6 n.mi. west of Sand Point, Black Marsh Channel . Lynn Harbor Point of Pines, 0.5 n.mi. south of Point of Pines, 0.1 n.mi. northeast of Finn's Ledge Bell, 0.2 n.mi. west of do. Winthrop Head, 1.1 n.mi. east of Lovell Island, 1.3 n.mi. north of . do.
0.4 0.5 0.2 0.4 0.8 0.5 0.3 0.4 0.8 0.7
0.4 0.4 0.2 0.5 1.0 0.6 0.4 0.3 1.0 0.6
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.2 0.2
0.4 033° 0.5 013 0.3 274° 0.5 009° 0.9 296° 0.6 226° 0.3 229 0.5 205° 0.9 196° 0.7 197°
0.1 0.0 0.0 0.0 0.0 0.2 0.0 0.2 0.2 0.1
0.5 0.5 0.2 0.6 1.2 0.8 0.5 0.4 1.2 0.7
219° 203° 090° 198° 131° 035° 033° 019° 033° 033°
Page 7
Calf Island, 0.4 n.mi. west of . do. do. Aldridge Ledge, 0.2 n.mi. north of do. Lovell Island and Call Island, between Black Rock Channel Deer Island Light, 0.4 n.mi. NW of Lovell Island, 0.4 n.mi. north of do. Deer Island, 0.7 n.mi. ESE of . do. Deer Island Light, 0.8 n.mi. ESE of Deer Island Light, 0.4 n.mi. east of
10 25 45 10 25 10 10 35 10 25 10 35 10 10
42° 20.33' 42° 20.33' 42° 20.33' 42° 20.97' 42° 20.97' 42° 20.35 42° 19.73' 42° 20.58' 42° 20.45 42° 20.45 42° 20.65' 42° 20.65' 42° 20.22' 42° 20.45'
70° 54.38 70° 54.38' 70° 54.38' 70° 54.80' 70° 54.80 70° 54.80' 70° 54.93' 70° 55.70' 70° 55.80' 70° 55.80' 70° 56.30 70° 56.30' 70° 56.28 70° 56.77'
+002 +0 23 +0 10 +0 13 -0 28 0 00 +0 16 -1 36 -1 28 +0 04 +0 05 -2 15 +0 22 +1 03 +0 43 +0 02 +0 08 +0 35 +0 52 +0 50 See Rotary tidal currents, table 2. -008 -0 11 +0 24 -001 -0 15 -2 10 -4 11 -146 +0 09 -0 11 +0 22 -0 29 -O 08 -0 14 +0 26 -0 11 +0 27 +0 19 +0 38 +0 10 -001 -0 11 +0 41 +0 20 -004 -0 20 +0 20 -1 23 +0 08 -1 13 +0 17 -0 16 -0 11 +1 02 -0 32 +0 52 +0.44 +0 16 -0 23 -0 10 +0 25 -101
0.8 0.5 1.0 0.8 1.1 0.7 0.8 0.8
0.6 0.2 1.1 1.1 1.1 1.0 0.8 0.8 0.7 0.9 1.0 0.9
0.1 0.0 0.1 0.0 0.0 0.0 0.2 0.3
0.2 0.0 0.1 0.0 0.0 0.0 0.0 0.2
0.9 0.6 1.2 0.9 1.4 0.9 0.9 1.0
247° 0.2 307° 1.2 259° 1.2 264° 1.3 220° 1.1 221° 0.9 233° 0.9 240° 0.8 219° 0.9 214° 1.1 264° 1.0 233°
046° 116° 064° 074° 048° 048° 066° 057°
. do. Deer Island Light, 0.7 n.mi. ESE of . BOSTON HARBOR-PRESIDENT ROADS
BOSTON HARBOR (Deer Island Light) Deer Island Light, 0.3 n.mi. SSE of do. Deer Island Light, 0.4 n.mi. SSE of .do. Deer Island, southwest of Long Island Head, 0.9 n.mi. NW of do. Deer Island Flats Deer Island Light, 1.3 n.mi. NW of Snake Island, southwest of Deer Island Light, 1.0 n.mi. WSW of do. Spectacle I. and Long I., between Spectacle Island, 0.2 n.mi. south of Spectacle Island, 0.3 n.mi. north of do. Spectacle Island, 0.7 n.mi. north of do. Spectacle Island, 0.1 n.mi. north of do. Spectacle I. and Thompson I., between Thompson Island, 0.7 n.mi. NNE of do. Fort Independence, 0.3 n.mi. east of Fort Independence, 0.4 n.mi. NW of South Boston, Reserved Channel South Boston, Pier 4, 0.2 n.mi. NNE of
10 10 35 10 25 10 10 35 10 10 10 10 35 10 10 10 35 10 25 10 25 10 10 35 10 10 10 10 25 10 10 25 10 10 10
42° 20.27' 42° 20.12' 42° 20.12 42° 19.97' 42° 19.97' 42° 20.63' 42° 20.40' 42° 20.40' 42° 20.83' 42° 21.12 42° 21.77 42° 19.97' 42° 19.97' 42° 19.35' 42° 18.98' 42° 19.95' 42° 19.95' 42° 20.10 42° 20.10' 42° 19.83' 42° 19.83 42° 19.25 42° 19.97 42° 19.97 42° 20.33' 42° 20.63' 42° 20.57' 42° 21.13' 42° 21.13' 42° 22.18' 42° 22.55' 42° 22.55' 42° 23.07' 42° 23.03' 42° 23.15'
70° 57.37' 70° 57.42 70° 57.42' 70° 57.42' 70° 57.42' 70° 57.78' 70° 58.43' 70° 58.43' 70° 58.65' 70° 58.74' 70° 59.22' 70° 58.43' 70° 58.43' 70° 58.45' 70° 59.15' 70° 59.13' 70° 59.13' 70° 59.27 70° 59.27 70° 59.27' 70° 59.27 70° 59.57' 70° 59.90 70° 59.90' 71° 00.22 71° 00.40 71° 01.97' 71° 01.85' 71° 01.85' 71° 03.38 71° 02.80 71° 02.80 71° 02.53' 71° 01.70 71° 03.02
Daily predictions +0 02 +0 44 +0 15 +0 28 -0 11 +0 46 +0 49 +0 28 +0 06 +053 +0 43 +0 30 -002 +0 47 +0 52 +0 33 +004 -0 26 -1 58 -1 08 -0 08 +0 30 +0 01 -0.44 001 +1 21 +0 50 +0 33 -027 -1 11 -1 32 -304 See Rotary tidal currents, table 2. -0 05 +0 19 +0 31 +0 13 +0 52 +1 14 +2 10 +1 05 +0 04 +1 33 +1 55 +0 23 -004 +004 -0 34 -0 22 -0 13 -1 05 -0 52 -1 46 +0 37 +1 40 +1 42 +0 37 -007 +1 32 +1 31 +0 31 +0 21 +1 09 +1 32 +0 25 -003 +0 56 +1 26 +0 29 +0 17 +1 40 +1 20 +0 52 -0 11 +1 32 +1 20 -003 -1 40 -354 -2 30 -2 56 -0 28 +1 31 +1 10 -0 20 -104 +1 31 +0 48 -0 40 +0 36 +1 31 +1 30 +1 12 -0 12 -0 25 -0 32 +001 See Rotary tidal currents, table 2. +0 38 +0 56 +0 16 +1 13 -014 +0 19 +1 42 +0 15 Current weak and variable +1 35 +0 50 +0 28 +0 16 +0 01 +1 05 +1 23 +0 51 +002 -0 26 +0 43 -0.46 +0 29 -0 15 +0 37 -004 +0 31 -0 10 -0 46 -0 16
0.4 1.2 1.1 0.5 0.4 1.1 0.8 0.8 0.6 1.0 0.8 0.2 0.7 0.4 0.6 0.4
0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0
0.4 0.7 0.3 0.5 0.4 0.7 0.5 0.6 0.5 0.7 0.5 0.3 0.5 0.2 0.5 0.5
0.4 312° 1.3 254° 1.2 273° 0.5 217° 0.5 244° 1.2 271° 0.8 280° 0.9 280° 0.7 287° 1.1 277° 0.9 280° 0.2 306° 0.8 281° 0.5 277° 0.6 303° 0.4 288°
0.0 0.0 0.0 0.4 0.1 0.2 0.0 0.2 0.1 0.0 0.0 0.2 0.2 0.0 0.2 0.1
0.5 134° 0.8 086° 0.4 082° 0.6 038° 0.4 098° 0.9 081° 0.6 086° 0.8 082° 0.6 086° 0.8 080° 0.6 081° 0.4 127° 0.6 086° 0.3 091° 0.6 125° 0.6 113°
Charles River East Boston, Pier 10, southeast of .do. Chelsea River, west of bascule bridge Chelsea River, below bascule bridge Mystic River Bridge, 0.1 n.mi. west of
Endnotes can be found at the end of table 2.
Lovell Island, 0.1 n.mi. south of
0.6 0.4 0.5 0.7 0.4 0.5 0.7 0.6 0.7 0.7 0.7 0.8 1.0 0.9 0.8 0.4 0.4 0.4 0.4 0.9 1.0 1.1 1.0 1.0 0.9 1.2
0.0 0.0 0.0 0.0 0.2 0.2 0.0
0.7 275° 0.4 263° 0.6 251° 0.7 294° 0.4 282° 0.6 279° 0.7 279° 0.6 275° 0.8 274° 0.8 298° 0.7 299° 0.8 305° 1.1 243° 0.9 225° 0.9 255° 0.5 135° 0.6 128° 0.4 134° 0.4 136° 1.0 244° 1.0 248° 1.2 243° 1.1 247° 1.1 234° 1.0 237° 1.3 236
10 10 35 20 10 10 24 10 10 10 25 10 35 10
42° 19.38 42° 19.45' 42° 19.45' 42° 19.62 42° 19.67' 42° 19.72' 42° 19.72 42° 19.17' 42° 19.12' 42° 18.62 42° 18.62' 42° 18.78 42° 18.78' 42° 18.67'
70° 55.93' 70° 55.90' 70° 55.90' 70° 56.03' 70° 56.03' 70° 55.97' 70° 55.97' 70° 54.97' 70° 54.97 70° 55.00 70° 55.00' 70° 55.55 70° 55.55' 70° 55.53'
Gallops Island, The Narrows Lovell Island, The Narrows Lovell Island, west of . do. Georges Island, 0.5 n.mi. ESE of Georges Island, 0.4 n.mi. east of Georges Island, 0.5 n.mi. southeast of .do. Georges Island, 0.3 n.mi. SSE of
+0 08 -1 54 -0 30 +0 17 -0 43 +1 08 -0 25 -2 17 -0 20 -101 -1 05 +0 19 -0 13 -147 -0 29 -2 10 -053 +0 15 -1 25 -1 41 -001 -1 46 -0 45 +0 25 +0 01 +0 16 +0 01 +0 21 -001 -0 38 +004 +0 27 -007 -0 38 +0 17 +0 15 -1 25 -0 11 +1 13 -0 46 +0 43 +0 34 +1 00 -0 05 +0 16 -0 26 +0 49 +0 29 --004 +0 14 +1 22 +0 02 +0 32 +0 46 +1 00 +0 13 -O 17 +0 04 +0 08 011 -0 11 +0 56 +0 45 +0 03 -0 11 +0 05 +0 47 +0 01 +0 21 +0 24 +0 34 +0 41 +0 08 +0 35 +0 58 +0 02 +0 16 +0 53 +0 32 - 2 03 -140 +0 36 +014 +0 56 +0 56 0 00 -0 12 +0 45 +0 45 +0 43 See Rotary tidal currents, table 2. See Rotary tidal currents, table 2. -0 10 +0 35 -001 +0 25 0 09 +0 40 -001 +0 25 +0 37 +1 22 +1 20 -O 29 +0 07 +1 04 +1 30 -0 53 +0 51 +1 25 +1 25 +0 56 +0 21 +1 09 +1 32 +0 15 0 08 +1 06 +145 -0.47 +0 37 +054 +0 34 +0 46 +0 22 +1 19 +1 36 +0 05 +0 50 +0 14 -O 57 +0 47 +0 17 +0 17 -0 28 +1 10 -O 17 +O 18 +0 19 -101 -1 52 +0 41 +0 17 - 1 12 +0 01 -049 +1 02 +0 01 +0 31 +0 13 +0 39 +0 55 +0 22 +0 38 +0 43 -001
0.8 0.9 0.7 0.1 0.4 1.0 1.0 1.0 0.9 1.2 1.2 1.0 0.7 0.8 0.7 1.0 0.8 0.6
0.0 0.0 0.0 0.2 151° 0.0 0.4 126° 0.2 346° 0.3 161°
1.0 062° 1.0 063° 0.9 052° 0.2 262° 0.5 293° 1.2 299° 1.2 313° 1.2 065° 1.1 057° 1.5 070° 1.4 078° 1.2 069° 0.8 073° 0.9 046° 0.9 074° 1.2 070° 1.0 065° 0.8 006°
Georges Island, 0.4 n.mi. SSE of
Nubble Channel Georges Island, 0.2 n.mi. WSW of do. Hull Gut do. Peddocks Island, 0.2 n.mi. north of do. Peddocks Island, 0.3 n.mi, northwest of do. do. Rainsford I. and Windmill Pt., between do. Gallops Island, 0.5 n.mi. southwest of do. Rainsford Island, 0.2 n.mi. NE of do. Rainsford Island, 0.4 n.mi. SE of Long I. and Rainsford I., between do.
35 10 10 20 10 25 10 25 10 25 40 10 25 10 25 10 20 10 10 25
42° 18.67' 42° 19.73' 42° 19.02 42° 19.02' 42° 18.20 42° 18.20 42° 18.32 42° 18.32 42° 18.40' 42° 18.40' 42° 18.40' 42° 18.52' 42° 18.52 42° 19.13' 42° 19.13 42° 18.90' 42° 18.90' 42° 18.50 42° 18.70 42° 18.70
70° 55.53' 70° 56.93' 70° 56.10' 70° 56.10' 70° 55.60 70° 55.60' 70° 56.00' 70° 56.00 70° 56.13' 70° 56.13 70° 56.13' 70° 56.32 70° 56.32' 70° 56.82 70° 56.82 70° 56.95' 70° 56.95 70° 56.62' 70° 57.78 70° 57.78
1.1 1.2 0.9 0.9 1.0 0.9 0.9 0.7 0.7 0.6 0.4 0.5 0.4 0.6 0.6 0.6
1.5 1.6 0.6 0.5 0.8 0.5 0.4 0.8 0.4 0.6 0.3 0.4 0.2 0.6 0.7 0.6
0.1 0.1 0.0 0.1 0.0 0.2 0.0 0.0 0.0 0.2 0.0 0.0
1.2 163° 1.3 153° 1.0 246° 1.0 255° 1.1 245° 1.0 250° 1.0 261° 0.8 251° 0.8 256° 0.6 238° 0.5 237° 0.6 239° 0.5 237° 0.6 225° 0.7 226° 0.6 229°
0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.3 0.2 0.3 0.0 0.1 0.0 0.2 0.0 0.1
1.8 350° 2.0 354° 0.7 257° 0.6 060° 1.0 060° 0.6 055° 0.5 060° 1.0 056° 0.5 053° 0.7 074° 0.4 072° 0.5 084° 0.3 086° 0.8 055° 0.9 049° 0.8 033°
Endnotes can be found at the end of table 2.
West Head, Peddocks I., 0.1 n.mi. W of do. Sunken Ledge, 0.2 n.mi. northwest of do. West Head, Long I., 0.4 n.mi. south of do. Moon Head, 0.4 n.mi. east of West Head, 0.2 n.mi. southwest of Nut Island, 0.4 n.mi. NNE of do. Nut Island, 0.2 n.mi. NNE of do. Peddocks Island, west of Moon Head, 0.9 n.mi. southeast of Squantum, 0.3 n.mi. southeast of
10 30 10 20 10 20 10 10 10 20 10 20 10 10 8
42° 17.45 42° 17.45 42° 17.87' 42° 17.87' 42° 18.32 42° 18.32' 42° 18.38' 42° 17.15' 42° 17.08 42° 17.08 42° 16.98 42° 16.98 42° 17.23' 42° 17.50 42° 17.40'
70° 57.22 70° 57.22' 70° 57.87' 70° 57.87' 70° 58.28 70° 58.28' 70° 58.73' 70° 57.18' 70° 57.22' 70° 57.22' 70° 57.32' 70° 57.32 70° 57.92 70° 58.93' 71° 00.10
-1 21 +0 57 +1 29 -104 -1 26 +1 03 +1 20 -048 +0 26 -0 36 +0 33 +0 56 +0 28 +0 24 +0 38 --002 +0 33 +0 46 +1 05 +0 29 +0 15 +1 00 +1 00 +0 25 -009 -154 0 25 -131 -004 +0 21 +1 05 +0 09 +0 20 +0 25 +1 06 +0 43 +0 20 0 29 +1 13 +0 41 +0 40 +0 35 +1 20 +0 43 +0 39 +0 38 +1 30 +0 28 -0 33 +0 15 +0 01 -0 31 +0 39 +1 04 +1 32 +0 44 Current weak and variable
1.0 0.7 0.8 0.5 0.4 0.5 0.3 0.4 0.6 0.5 0.5 0.4 0.3 0.3 1.2 1.2 1.2 1.2 1.1 1.2 1.1 1.0 0.9 0.8 0.4 0.3 0.3 0.3
0.0 0.0 0.1 0.2 0.0 0.0 0.0 0.0
0.0 0.0 0.3 0.2 0.0 0.0 0.3 0.0 0.2 0.1 0.1 0.1 0.2 0.2
1.1 208° 0.9 198° 0.4 223° 0.3 236° 0.7 231° 0.5 231° 0.3 259° 1.4 167° 1.3 158° 1.2 155° 1.2 146° 1.0 0.5 187° 0.3 227°
0.9 018° 0.6 038° 0.7 016 0.5 030° 0.6 060° 0.5 043° 0.4 080° 1.4 322° 1.4 312° 1.4 321° 1.2 309° 1.0 303° 0.4 358° 0.3 033°
223° 220° 245° 216° 305° 314°
+0 18 +0 34 +0 47 +0 42 Current weak and variable +0 14 -0 41 +0 09 +1 42 +0 07 +1 13 +0 42 +1 04 -0 14 +1 11 +1 02 +0 53 +0 07 +0 35 +0 16 -1 29 +0 02 +0 50 +1 46 +1 01 -0 14 +0 46 +0 28 -2 46 See Rotary tidal currents, table 2. See Rotary tidal currents, table 2. +0 20 +1 09 +1 20 +1 01 +1 19 +1 09 +1 37 -0 10 -0 14 -1 21 +0 11 +0 23 -0 38 +0 08 +0 43 -006 +0 49 -041 -0 10 +0 59 +0 44 +0 19 +1 26 +0 34 +1 13 +0 47 +1 58 +1 12 -0 23 +0 49 +0 39 -0 31 -O 10 -0 37 +0 13 +0 07 -0 40 -0 47 +0 47 +0 19 -O 13 -1 26 +0 02 -0 46 +0 14 +0 49 +0 54 +0 13 -0 58 +1 00 +0 53 -1 16 +0 20 +1 28 +1 16 +0 29 Negligible current
0.4 0.6 0.5 0.9 0.5 0.4 0.4 0.3 0.3 0.2 0.3
0.4 0.3 0.7 0.3 0.8 0.6 0.7 0.2 0.4 0.1 0.3 0.3 0.1 0.2
0.2 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Pig Rock, northwest of Stodders Neck, Weymouth Back River Gull Point, 0.4 n.mi. ESE of . do. Kings Cove, off Germantown Point Pine Point, southeast of Philip Head, Town River Bay Hole Point Reach, Town River
1.0 075° 0.8 082° 0.7 094° 0.4 203° 0.7 078° 0.6 082° 1.0 085° 0.5 268° 0.4 229° 0.4 235° 0.3 242° 0.3 269° 0.2 149° 0.4 289°
0.3 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0
0.4 305° 0.3 300° 0.9 281° 0.4 345° 1.0 290° 0.8 293° 0.8 283° 0.3 093° 0.4 069° 0.2 042° 0.4 063° 0.4 070° 0.1 303° 0.3 095°
1731 1736 1741 1746 1751 1756 1761 1766 1771 1776 1781 1786 1791 1796 1801 1806 1811 1816
Monomoy Pt., channel 0.2 mile west of Chatham Roads Stage Harbor, west of Morris Island Dennis Port, 2.2 miles south of Monomoy Point, 6 miles west of Handkerchief Lighted Whistle Buoy "H" Halfmoon Shoal, 1.9 miles northeast of Halfmoon Shoal, 3.5 miles east of Great Point, 0.5 mile west of Great Point, 3 miles west of Tuckernuck Shoal, oft east end Brant Point, 2 miles NNW of <1> Nantucket Harbor entrance channel Eel Pt., Nantucket I. 2.5 miles NE of Muskeget I., channel 1 mile northeast of Muskeget Rock, 1.3 miles southwest of Muskeget Channel Wasque Point, 2.0 miles southwest of
41° 33.0' 41° 38.6' 41° 39.4' 41° 37.0' 41° 33.5' 41° 29.3' 41° 29.05' 41° 28.1' 41° 23.6' 41° 23.4' 41° 24.3' 41° 19.25' 41° 18.4'. 41° 19.3' 41° 21.0' 41° 19.2 41° 20.9' 41° 19.90'
70° 01.3'
0.6 0.2 0.3 0.8 0.3 0.6 0.7 0.5 0.5 0.2
0.3 0.2 0.2 0.6 0.4 0.5 0.6 0.4 0.5 0.2 0.6 0.3 0.6 0.6 1.9 0.6
000 +0 39 +0 18 -0 23 Current weak and variable +3 07 +1 29 +2 24 +4 28 +1 28 +0 52 +0 27 +1 04 +1 22 +1 52 +1 09 +1 22 +1 08 +1 10 +0 49 +0 59 +1 42 +1 49 +1 24 +1 44 +1 13 +1 23 +1 06 +1 11 +0 25 +1 37 +1 13 +0 33 +1 15 +1 23 +0 51 +1 08 +1 22 +1 34 +1 09 +1 10 +1 43 +2 36 +3 22 +1 55 +2 44 +3 58 +1 13 +1 12 +1 02 +1 15 +1 29 +O45 +0 57 +0 56 +1 10 +0 23 +0 57 +0 18 +1 40 +0 38 +1 29 +1 02 +1 30 +1 04 +1 11 +0 32 +1 15 +1 53 +1 31 +1 12 +1 26 +1 13 +0 58 -007 +0 49 +0 48 +1 48 +1 48 +1 55 + 1 59 +2 42 +2 03 +2 33 +2 37 +1 46 +1 55 +1 15 +1 20 +1 15 +1 03 +1 06 +1 02 Current weak and variable +2 46 +0 53 +2 44 +4 22 +2 44 +2 33 +2 51 +3 35 +1 47 +1 32 +144 +1 45
0.1 0.0 0.0 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.5 335° 0.3 077° 0.5 090° 1.3 080° 0.8 110° 1.1 088° 1.1 029° 0.8 066° 0.9 113° 0.3 090° 1.2 171° 0.6 094° 1.1 108° 1.3 024° 3.8 021° 1.3 075°
0.0 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.2 0.9 0.6 1.9 0.6 0.5 0.6 0.6 0.7 0.5 0.7 0.5 0.6
1.0 144° 0.3 269° 0.5 275° 1.3 251° 0.6 265° 1.0 295° 1.2 195° 0.8 248° 0.9 287° 0.3 275° 1.5 350° 0.4 284° 1.5 295° 1.0 192° 3.3 200° 1.2 280° 0.9 280° 1.1 280° 1.1 260° 1.3 215° 0.9 272 1.2 300° 0.9 276° 1.0 260°
1821 1826 1831 1836 1841 1846 1851 1856 1861 1866
Long Shoal-Norton Shoal, between Cape Poge Lt., 1.7 miles SSE of Cross Rip Channel Cape Poge Lt., 3.2 miles northeast of Broken Ground-Horseshoe Shoal, between Point Gammon, 1.2 miles south of Hyannis Harbor, entrance off breakwater Lewis Bay entrance channel Cotuit Bay entrance (Bluff Point) Wreck Shoal-Eldridge Shoal, between
41° 24.50 41° 24.0' 41° 26.9' 41° 27.5' 41° 33.0' 41° 35.3' 41° 37.4' 41° 37.9' 41° 36.6' 41° 32.0'
70° 20.00' 70° 25.6' 70° 17.5' 70° 24.0 70° 17.1'. 70° 15.4' 70° 17.5 70° 16.4' 70° 25.8 70° 25.7'.
0.9 004° 0.5 035° 1.7 062°
Endnotes can be found at the end of table 2.
Hedge Fence Lighted Gong Buoy 22 Cape Poge Light, 1.4 miles west of Edgartown, Inner Harbor
41° 28.3' 41° 25.45 41° 23.4'
70° 29.0' 70° 29.00' 700 30.5'
Katama Pt., 0.6 mi. NNW of, Katama B
1.4 0.3 1.1 0.6 0.8 0.6 0.3 0.4 1.4 2.2
1.2 268° 0.2 250° 1.1 270° 0.5 265° 0.7 260° 0.5 180° 0.2 195° 0.3 175° 1.8 329° 2.2 297
+2 48 +2 34 +2 38 +2 44 +2 13 +1 54 +1 26 +1 39 +0 25 -1 04 +0 35 -0 20 +0 38 +1 08 +1 58 +1 52 +0 12 -O 43 +0 20 --031 +0 47 +1 12 +1 46 +1 57 +2 07 +0 55 +1 43 +2 04 +2 40 +1 52 +2 17 +2 11 Current weak and variable +2 49 +1 58 +2 20 +2 35 +2 27 +1 38 +2 01 +1 52 +3 21 +2 14 +3 40 +4 01 +2 30 +2 03 +2 12 +2 11 +2 13 +1 45 +1 55 +149
1891 1896 1901 1906 1911 1916 1921 1926
East Chop-Squash Meadow, between East Chop, 1 mile north of Vineyard Haven West Chop, 0.8 mile north of Hedge Fence-L'Hommedieu Shoal, between Waquoit Bay entrance L'Hommedieu Shoal, north of west end Nobska Point, 1.8 miles east of
41° 27.9' 41° 29.1' 41° 28.1'. 41° 29.6' 41° 30.3' 41° 32.9' 41° 31.6 41° 31.1'.
70° 32.2' 700 33.5' 70° 35.2 70° 35.7' 70° 32.2 70° 31.8 70° 34.6' 70° 37.1'
Page 8
Sakonnet River (except Narrows) Black Point, Sw of, Sakonnet River Almy Point Bridge, south of, Sakonnet River Tiverton, Stone bridge, Sakonnet R. <9>
41° 30.4' 41° 37.3' 41° 37.5'
71° 13.2' 71° 13.2' 71° 13.0'
Tiverton, RR. bridge, Sakonnet R. <10>
Common Fence Point, northeast of
Current weak and variable -2 54 -1 55 -2 13 -2 26 -300 -2 10 -2 30 -3 13 -258 -5 02 -2 26 -306 -2 54 -0 36 -3 26 -5 06 -2 48 -341 -304 -1 15 -2 38 -4 50 -2 32 -241 -2 25 -0 58 -1 03 -0 38 -1 20 -104 0 06 -0 42 -107 -0 29 1 10 -047 -1 10 -1 33 Current weak and variable Current weak and variable -1 57 --007 -1 17 -2 08 -1 38 -0 26 -1 38 - 1 39 -0 42 -0 34 -1 20 -1 28 -1.40 -1 28 -1 14 - 1 16 -0 16 -0 32 -1 13 -107
0.8 0.1 0.0 0.1 0.2 0.4 0.6
1.5 0.2 0.1 0.1 0.4 0.7 1.2
000° 026° 058° 046° 347° 013° 001°
2211 2216 2221 2226 2231 2236 2241 2246 2251 2256
Brenton Point, 1.4 n.mi. southwest of Castle Hill, west of, East Passage Bull Point, east of Mackerel Cove Newport Harbor, S and E of Goat Island Rose Island, northeast of Rose Island, northwest of Rose Island, west of Gould Island, southeast of Gould Island, west of
41° 25.9' 41° 27.4' 41° 28.8' 41° 28.5' 41° 29' 41° 30.2 41° 30.4' 41° 29.8' 41° 31.5 41° 31.9'
71° 22.6' 71° 22.7' 71° 21.00 71° 22.8' 71° 20' 71° 19.9' 71° 21.1' 71° 21.0 71° 20.2' 71° 21.5
Endnotes can be found at the end of table 2.
2261 2266 2271 2276 2281 2286 2291 2296
Dyer Island-Carrs Point (between) Conanicut Point, ENE of Dyer Island, west of Mount Hope Bridge Hog Island, northwest of Common Fence Point, west of Mount Hope Point, northeast of Kickamuit R. (Narrows), Mt. Hope Bay
41° 34.5' 41° 34.5' 41° 35.2 41° 38.4' 41° 38.8 41° 39.0' 41° 40.8' 41° 41.9'
71° 17.8 71° 20.5' 71° 18.5' 71° 15.5' 71° 17.7' 71° 14.7' 71° 12.7' 71° 14.7'
0.4 0.2 0.4 0.6 0.2 0.2 0.2 0.7 0.5 0.9
0.4 0.2 0.6 0.8 0.2 0.4 0.2 1.0
0.0 0.1 0.0 0.0 0.1 0.0 0.0 0.0
0.0 0.1 0.0 0.0 0.0 0.1 0.1 0.0
236° 183° 216° 230° 199° 224° 217° 191°
Warren River entrance Warren, Warren River Beavertail Point, 0.8 mile northwest of Dutch Island, east of, West Passage
41° 42.7'
71° 17.8 71° 17.3' 71° 24.7' 71° 23.7'
040° 018° 023° 047° 011° 050° 038° 000° 000° 000° 020° 358° 003° 035° 032° 038° 030° 014° 012° 011° 007°
Dutch Island and Beaver Head, between Dutch Island, west of Jamestown-North Kingstown Bridge
0.5 0.3 0.2 0.2 0.3 0.5 0.7 0.2 0.2 0.4
- 1 56 - 1 13 -0 50 -1 37 -2 05 -024 -1 18 - 1 13 -104 -046 -053 -134 -1 22 --134 -1 08 0 58 -2 16 -004 -0 30 1 04 - 1 13 +0 08 -100 -0 37 -201 -020 -1 03 -0 57 - 204 -3 34 1 19 -0 48 -1.40 -004 Current weak and variable -0 14 +0 11 -022 -1 05 -0 11 -054 -1 31 -0 19 -302 -5 10 -2 37 -2 46 -3 55 -1 10 -1 56 -1 32 - 158 -147 -1 33 -1 49 1 21 -1 16 -2 16 -4 10 -1 22 -1 33 -3 10 -0 31 Current weak and variable Current weak and variable -241 -2 29 -2 44 -2 37 1 40 1 21 -1 18 1 13 -2 24 +0 47 -100 -1 11 -148 -4 02 -131 -1 06 -2 30 -0 12 --302 +0 08 -0 27 -1 34 -148 -4 14 -131 -102 2 24 -0 26
41° 29.8' 41° 30.3' 41° 31.8'
71° 24.2' 71° 24.6' 71° 23.8'
0.8 0.4 0.8 1.1 0.4 0.5 0.4 1.4 0.9 1.7 0.4 1.0 0.5 0.4 0.3 0.6 1.0 1.3 0.5 0.5 0.8 0.3 0.3 0.7 0.6 0.2 1.0 0.4 1.3 0.2 0.8 0.2 1.1
1.0 233° 1.2 206° 1.3 176°
2336 2341 2346 2351 2356 2361
Wickford Harbor Greenwich Bay entrance Patience Island, narrows east of Patience I. and Warwick Neck, between Nayatt Point, WNW of India Point RR. bridge, Seekonk River <9>
41° 34' 41° 40.0 41° 39.5' 41° 39.8' 41° 43.7' 41° 49.0
71° 26' 71° 23.6' 71° 21.2' 71° 22.4' 71° 21.6 71° 23.3
0.4 0.3 0.1 0.5 0.2 0.7 0.1 0.4 0.1 0.6
354° 040° 325° 020° 020° 020° 343° 030° 030° 030°
Harbor of Refuge, west entrance Pond entrance 2.4 miles southwest of 4.5 miles southwest of four miles north of Sandy Point, 2.1 miles NNE of Sandy Pt., 1.5 miles north of Clay Head, 1.2 miles ENE of Old Harbor Pt., 0.5 mile southeast of Lewis Pl., 1.0 mile southwest of Lewis Pt., 1.5 miles west of Great Salt Pond entrance Great Salt Pond ent., 1 mile NW of Sandy Point, 0.4 mile west of <11> Green Hill Point, 1.1 miles south of
2401 2406 2411 2416 2421 2426 2431 2436 2441 2446 2451
41° 18' 41° 15.85' 41° 15' 41° 13.35' 41°09' 41° 08.20 41°09' 41° 11.97' 41° 12' 41° 13.80' 41° 20.90'
71°32' 71° 34.00 71° 34' 71°31.85' 71° 32' 71° 37.30 71° 38 71° 35.50 71° 36' 71° 35.13' 71° 35.77
-0 19 +0 30 -0 11 - 1 59 +0 01 -1 16 -1 20 -357 041
+0 21 -032 0 12 -1 11 -O11 -047 0 57 --3 14 040 - 103 0 26
+0 30 -021 -1 08 -028 -0 39 --025 049 - 3 25 1 55
+007 -054 -104 -1 06 +0 05 -1 24 -1 11 -4 33 0 46 - 146 -1 06
0.3 0.4 0.7 0.3 0.1 0.7 0.5 0.1 0.2
0.3 0.6 0.7 0.2 0.2 0.6 0.6 0.1 0.1 0.2 0.1
0.0 0.0 0.0 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.8 1.0 1.9 0.7 0.2 1.9 1.4 0.3 0.4
285° 296° 315° 298° 336° 298° 318° 165° 158°
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.8 076° 1.7 066° 2.1 063° 0.5 164° 0.6 175° 1.8 136° 1.7 170° 0.3 326 0.4 035° 0.7 011o 0.4 070°
Endnotes can be found at the end of table 2.
2456 2461 2466 2471 2476 2481 2486 2491 2496 2498 2501 2506 2511 2516 2521 2526 2531 2536
Sandy Point, 4.1 miles northwest of Grace Point, 2.0 miles northwest of Quonochontaug Beach, 1.1 miles S of Quonochontaug Beach, 3.8 miles S of Lewis Point, 6.0 miles WNW of Southwest Ledge Southwest Ledge, 2.0 miles west of Watch Hill Point, 2.2 miles east of Watch Hill Point, 5.2 miles SSE of Watch Hill Point, 5.3 n.mi. SE of Montauk Point, 5.4 miles NNE of Montauk Point, 1.2 miles east of Montauk Point, 1 mile northeast of Wicopesset Island, 1.1 miles SSE of East Pt., Fishers I., 4.1 miles S of Cerberus Shoal, 1.5 miles east of Shagwong Reef & Cerberus Shoal, between Montauk Harbor entrance
41° 17.10' 41° 12 41° 18.80' 41° 16.35' 41° 11.60' 41° 07' 41° 06.80' 41° 18.16 41° 13.20 41° 14.65' 41° 09.55 41° 04.50' 41° 05 41° 16.50 41° 13.40' 41° 10.45' 41°07.90' 41° 04.78'
71° 38.00' 71° 38' 71° 42.82 71° 43.00 71° 44.20 71° 42' 71° 43.00 71° 48.60' 71° 49.00 71° 46.43 71° 49.48' 71° 49.80' 71° 51' 71° 54.80 71° 55.50 71° 55.17' 71° 55.50 71° 56.35'
+0 32 +0 31 See table 5. +0 27 +0 46 +0 15 +0 38 +1 01 +0 15 -O 15 -O 15 +0 31 +0 10 +0 13 +0 44 +0 39 +0 38 +0 15 -O 18 +0 18 0 39 -0 48 -0 39 -1 11 -1 15 +0 11 + 48 +0 53 +0 18 +0 06 -0 24 -0 26 -0 26 -2 26 -303
-030 +0 16 +1 12 -0 22 +0 23 -0 16 +0 48 +0 05 +0 46 -1 09 -151 -0 41 +1 03 -002 -0 17 -204
0.4 0.3 0.2 0.6 0.5 0.4 0.4 0.3 0.4 1.0 0.9 0.6
-0 31 -003 +0 24 -022 -052 -032 +001 002 -0 03 - 204 -1 55 -0 18 +001 -103 -1 09 -5 00 2 43 -0 55 -1 10 -0 20
0.1 0.2 0.4 0.7 0.6 0.2 0.4 0.3 0.5 0.9 0.6 0.3 0.6 0.6 0.6 0.2 0.1 0.2 0.5 0.4
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
1.1 248° 0.7 243° 0.6 286° 1.5 321° 1.5 354° 1.2 260° 1.2 265° 0.7 263° 1.1 279° 2.8 346° 2.4 356° 1.5 250° 0.9 236° 1.1 256° 1.9 241° 1.2 226°
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.4 078° 0.6 058° 1.2 097° 2.1 141° 1.9 168° 0.7 086° 1.2 064° 0.9 092° 1.6 079° 2.8 162° 1.9 145° 0.8 073° 1.8 073° 1.8 092° 1.8 056° 0.6 033° 0.2 024° 0.5 353° 1.6 054° 1.3 096°
2541 2546 2551 2556 2561 2566 2571
Mt. Prospect, 0.6 mile SSE of Cerberus Shoal and Fishers I., between Little Gull Island, 3.7 miles ESE of Gardiners Island, 3 miles northeast of Eastern Plain Point, 1.2 miles N of Eastern Plain Pt., 3.9 miles ENE of Little Gull Island, 0.8 mile SSE of <51>
41° 14.75' 41° 13' 41° 10.7' 41° 07.9 41° 07.12 41° 07.05' 41° 11.67'
71° 59.80' 71° 58' 72° 02.1' 72° 02.0 72° 04.85 71° 59.80' 72° 06.23'
+0 15 +0 09 +0 13 +0 06 See table 5. -0 38 -0 26 -1 30 -109 -104 -023 -029 -024
-0 40 2 34 -1 12 3 13 -205 -0 43 -1 10
Rocky Point, 2 miles WNW of GARDINERS BAY, etc.
Endnotes can be found at the end of table 2.
The Race Race Point, 0.4 mile southwest of The Race, near Valiant Rock THE RACE, 0.6 n.mi. NW of Valiant Rock 0.5 mile NE of Little Gull Island Little Gull l., 1.4 n.mi. NNE of Little Gull I., 1.1 miles ENE of Great Gull Island, 0.7 mile WSW of Plumn Gut Plum Gut Eastern Point, 1.5 miles south of New London Harbor entrance Thames River Winthrop Point
41° 14.70' 41° 14.20 41° 14.00 41° 13' 41° 13.53' 41° 13.10 41° 11.67' 41° 10.00 41° 09.91' 41° 17.8' 41° 19.08
72° 02.60 72° 03.60 72° 03.58 72° 06' 72° 05.52 72° 05.10 72° 08.02 72° 12.80 72° 12.75' 72° 04.4' 72° 05.02'
-0 19 +0 15 +0 14 -O 30 -101 -1 08 -146 -101
-0 14 -034 +0 21 +0 09 Daily predictions +004 -O 16 +0 38 +0 07 +0 10 +0 10 -O 12 -022 -109 --052 -1 22 -1 12 - 1 32 -1 08 -1 30 -2 03
-040 --033 -O 56 -153 --2 16 -200 - 204 -- 1 26
1.2 0.5 1.5 1.0 1.3 0.7 0.2 0.1
1.0 0.5 1.5 1.1 1.4 1.0 0.1 0.1
0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.0 0.1 0.0 0.0
2.6 288° 2.9 295° 2.7 302° 3.3 002° 1.5 304° 4.0301° 2.6 299° 3.5 323° 1.9 307° 0.4 249° 0.1 348°
0.0 0.0 0.3 0.0 0.5 0.0 0.0 0.0 0.0 0.0 0.0
3.5 3.5 3.0 3.1 1.6 4.7 3.2 4.3 3.2
135° 100° 112° 107° 100° 130° 133° 126° 118° 055° 211°
--056 -1 38 -045 -2 46 - 1 19 007 -O 57 - 1 59 -1 20 -2 05 -141 +0 02 -0 56 -202 --031 -- 240 1 22 +0 15 Current weak and variable -044 -0 39 -0 54 -2 00 +0 38 -O 58 -2 20 -O 57 - 150 -O 32 -1 05 -1.45 0 45 - 1 06 034 -153 0 32 0 42 -0.44 -0 51 -0 29 -0 50 -O 16 -121 +0 46 +0 25 +0 38 +0 15 +0 25 +0 05 - 104 052 +008 +0 07 000 0 29 +0 20 +0 30 +0 20 0 08 0 46 -0 41 -0 28 - 103 --2 16 -O 50 -0.43 -2 48
72° 04.72 72° 06.30 72° 06.93' 72° 07.7'. 72° 08.47 72° 10.62 72° 12.50 72° 12.30 72° 11.92' 72° 49.8372° 49.67' 72° 15.37 72° 16.92
0.5 0.7 0.5 0.4 0.6 0.5 0.8 0.6 0.3 0.3 0.6 0.5
0.5 1.0 0.4 0.5 0.3 0.5 0.8 0.8 0.2 0.3 0.6 0.4
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0
1.2 1.9 1.4 1.2 1.6 1.2 2.1 1.7 0.8 0.7 1.7 1.3
285° 258° 255° 267° 352° 260° 236° 247 272° 260° 255° 240°
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0
1.6 2.9 1.3 1.6 0.8 1.4 2.4 2.4 0.7 0.8 1.9 1.2
062° 043° 090° 099° 178° 073° 076° 065° 068° 074° 075° 045°
Endnotes can be found at the end of table 2.
Connecticut River Lynde Point, channel east of Saybrook Point, 0.2 mile northeast of Railroad drawbridge
41° 16' 41° 17.02 41° 19.00'
72° 20' 72° 20.87' 720 20.77'
0.3 0.6 0.4 0.2 0.3 0.4 0.3 0.3 0.3 0.2 0.0 0.7 0.7 0.5 0.3 0.8 0.7 0.7 0.7 0.5 0.5 0.6 0.4 0.6 0.5
1.4 0.6 1.0 1.0 0.8 0.7 2.0 2.3 3.1
070° 155° 080° 160° 135° 095° 070° 066° 055°
+1 08 +1 12 -005 +0 56 +1 52 +1 59 +2 37 +3 13 +357 +3 58 +5 00 -0 50 -0 44 -141 -0 38 +0 12 -0 41 -0 36 +0 01 -1 13 -1 14 -041 +0 09 +0 09 +0 29 -0 42 -0 54 +0 18 +0 12 +0 06 -0 15 +0 45 +0 19 -001 +0 21 +004 +0 27 +0 04 -1 16 +0 51 +0 06 +0 25 +0 19 +0 15 -0 15
2881 2884 2886 2891 2894 2896 2901 2906 2911 2916 2921 2926 2928 2931 2936 2941 2946 2951 2956 2961 2966 2968 2971 2976 2981 2986 2991 2996 3001
0.9 344° 1.5 355° 1.0 360° 0.6 359° 0.9 356° 1.1 290° 0.8 350° 0.8 270° 0.9 355° 0.6 335° 0.1 290° 1.9 260° 1.9 269° 1.4 245° 0.8 255° 2.1 245° 1.8 279° 1.9 249° 2.0 256° 1.4 293° 1.3 272° 1.5 260° 1.0 290° 235° 1.4 260° 2.0 249° 1.0 287° 1.4 2840 1.2 253° 0.9 241° 1.1 255° 0.6 260° 0.7 255° 0.9 270° 0.9 278° 0.4 290° 0.9 254° 0.6 271° 1.4 319° 015° 0.3 255° 0.6 265° 0.6 265° 0.9 270° 0.4 250°
-0.52 -0 33 -008 -053 -1 25 -045 -0 14 +0 02 +0 06 -1 08 -0 35 -0 15 -007 +0 01 -0 26 -003 -006 -001 -0 38 -0 18 +0 21 -0 28 -0 42 +0 42
Rocky Point, 0.3 mile north of Cornfield Point, 2.8 n.mi. SE of Cornfield Point, 3 miles south of Cornfield Point, 1.1 miles south of Cornfield Point, 1.9 n.mi. SW of Kelsey Point, 2.1 miles southeast of Six Mile Reef, 1.5 miles north of Six Mile Reef, 2 miles east of Horton Point, 1.4 miles NNW of Kelsey Point, 1 mile south of .. Hammonasset Point, 1.2 miles SW of Hammonasset Point, 5 miles south of Duck Pond Point, 3.2 n.mi. NW of Mattituck Inlet, 1 mile northwest of Sachem Head, 1 mile SSE of Sachem Head 6.2 miles south of Roanoke Point, 5.6 miles north of Roanoke Point, 2.3 miles NNW of Sachem Head, 1 mile south of Herod Point, 2.8 miles north of Herod Point, 6.5 miles north of Herod Point, 5.0 n.mi. NW of New Haven Harbor entrance <12> City Point, 1.3 miles northeast of Oyster River Pt., 1.3 miles SSE of <1> Pond Point, 4.2 miles SSE of Stratford Shoal, 6 miles east of Sound Beach, 2.2 miles north of Charles Island, 0.8 mile SSE of Housatonic River Milford Point, 0.2 mile west of Railroad drawbridge, above Fowler Island, 0.1 mile NNW of Wooster Island, 0.1 mile southwest of Derby-Shelton Bridge, below <13> Point No Point, 2.1 miles south of Old Field Point, 1 mile east of do. Old Field Point, 2.9 n.mi. NNW of
41° 08.63' 41° 13.95 41° 12.9 41° 14.65' 41° 14.48 41° 14.10 41° 12.66' 41° 10.83' 41°06.30' 41° 14' 41° 14.22' 41°09.80 41° 04.73' 41° 01.68' 41° 13.65' 41°08.73 41° 04.37' 41° 00.92' 41° 14' 41° 00.97' 41° 04.65' 41° 01.64' 41° 14' 41° 17.83 41° 12.87' 41° 08.60' 41° 04.52 41° 00.33' 41° 10.77
72° 21.42' -006 72° 20.33' 1 14 72° 22.4' -0 45 720 23.40' 0 40 72° 25.30 0 56 72° 27.93 0 14 72° 28.87' +0 04 72° 26.90' -0 15 72° 27.40' +0 25 72° 30' -1 21 72° 34.00' -0 38 72° 34.17 +0 18 720 33.91' -0 12 72° 34.22' 000 72° 42.30' -0 17 72° 42.30' +0 50 72° 42.53' +0 19 72° 42.97' -0 58 72° 43' 0 35 72° 49.93-008 72° 49.80 -006 72° 54.73' +004 72° 55' -1 00 72° 54.42' +0 32 72° 58.00' 72° 58.08' +0 01 72° 58.43 +0 22 72° 58.45' +0 18 73° 02.63' -0 30
-0 39 -143 -0 34 -2 14 1 22 -1 11 -0 52 -046 -029 -2 05 -1 42 -O 17 -O 14 0 37 -1 13 -0 15 0 35 -0 40 0 52 -O 17 -O 18 0 00 -1 29 0 03 -0 58 -0 25 -0 20 0 36 - 1 05
0.7 0.5 0.6 0.5 0.5 0.6 0.4 0.7 0.7 0.5 0.3 0.5 0.4 0.3 0.3 0.3 0.3 0.2 0.4 0.2 0.2 0.2 0.3 0.1 0.1 0.2 0.2 0.3 0.1
0.0 0.1 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.4 0.5 0.5 0.4 0.4 0.2 0.3 0.3 0.3 0.2 0.3 0.2 0.5 0.1 0.1 0.2 0.2 0.3 0.2
2.1 041° 1.4 085° 1.7 094° 1.6 108° 1.5 091° 1.8 070° 1.3 095° 2.1 040° 2.0 040° 1.5 118° 1.0 106° 1.5 090° 1.2 071° 1.0 053° 1.0 065° 0.9 065° 0.9 050° 0.7 070° 1.2 084° 0.6 090° 0.7 070° 0.7 089° 0.9 152° 0.4 215° 0.3 060° 0.6 065° 0.6 060° 0.9 075° 0.4 070°
3006 3011 3016 3021 3026 3031 3036
-106 -1 06 +0 37 +0 11 -O 17 -0 12 +1 45 +1 33 -0 14
0.4 0.4 0.4 0.2 0.1 0.4 0.2 0.2 0.2
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1
1.2 1.3 1.1 0.7 0.4 1.2 0.6 0.5 0.6
135° 185° 270° 220° 095° 074° 308° 297° 076°
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Endnotes can be found at the end of table 2. Page 9
0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.4 0.2 0.3 0.3 0.3 0.2 0.6 0.5 0.2 0.2 0.1 0.1 0.2 0.1
1.0 266° 0.5 236° 1.0 254° 0.6 291° 1.0 267° 0.9 279° 2.6 151° 1.3 256° 0.7 340° 0.5 261° 066° 0.4 232° 0.7 272° 0.5 265°
0.3 0.3 1.0 0.5 0.3 0.2 0.2 0.2 0.3 0.2
3056 3061 3066 3071 3076 3081 3086 3091 3096 3101
1.1 0.6 1.0 0.8 0.8 0.9 1.9 1.5 0.6 0.6 0.4 0.4 0.6 0.4
092 081° 075° 078° 080° 087° 323 016 176 079• 232° 047 084 080*
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
3106 3111 3116 3121 3124 3126
41° 00.23 41° 00.23' 41° 04.77 41° 04.77 41°02.97' 41°02.97 40° 58' 40° 58' 41°09' 40° 59.00 40° 56.30' 41° 01.70' 41° 05.05' 41°06.27' 41° 06' 41° 01.97'41° 01.97' 41° 03.32 41° 05.20' 40° 58.60'40° 57' 40° 59.73' 41° 00.38' 41° 00.38' 41° 00.38' 40° 55.60' 40° 55.60' 40° 54.53' 40° 55' 41° 01.58 41° 01.58' 40° 57.95 40° 57.95 40° 59.90' 40° 59.98'
73° 05.70 73° 05.70 73° 06.67' 73° 06.67 73° 05.80' 73° 05.80 73° 06' 73° 10' 73° 11' 73° 13.87' 73° 13.87' 73° 14.03' 73° 14.40' 73° 21.92' 73° 23' 73° 24.33' 73° 24.33' 73° 25.25' 73° 24.22' 73° 23.77 73° 26' 73° 24.60 73° 23.80' 73° 23.80' 73° 23.80' 73° 25.05' 73° 25.05' 73° 24.45' 73° 23' 73° 28.68 73° 28.68 73° 29.70 73° 29.70 73° 31.00' 73° 31.03
+0 54 +0 34 --002 +0 47 +0 43 +0 29 -003 +0 30 +0 33 +0 40 +0 14 +0 03 0 15 +0 12 -0 14 +0 04 +0 03 +0 24 +0 25 +0 19 -0 22 -010 -0 25 -023 +0 22 +0 58 +0 27 0 00 -O 34 -1 06 - 143 - 1 48 +001 -004 0 00 -0 17 +0 09 +0 23 -0 16 -002 -1 11 --010 -0 15 -0 29 +0 43 +0 49 +0 51 +0 44 +0 01 +0 27 +0 30 +0 12 +0 09 -0 20 +0 29 -001 Current weak and variable +0 54 +1 00 +1 08 +0 22 -006 +0 45 +1 09 +0 25 -2 20 -333 -3 27 -2 23 +0 09 0 00 +0 38 +0 19 +0 42 +0 42 +0 14 +0 10 -0 58 -043 -0 33 -0 43 -1 38 -1 33 -2 07 -2 20 +1 01 +0 51 +0 45 +0 06 +0 38 +0 34 +0 35 +0 17 -O 17 -001 +1 35 +0 +0 15 +0 35 +0 23 +0 40 -0 33 +0 31 +0 14 -0 27 +0 10 +0 35 +0 21 +0 19 +0 42 +1 12 +0 07 -0 19 -O 59 +0 16 +1 23 0 00 -0 44 +0 13 +1 21 -002 +1 37 +1 15 +1 29 +0 54 +0 13 +0 34 +1 16 +0 26 +0 49 +0 28 +0 22 +0 05 +0 31 +0 32 +0 55 -021
Old Field Point, 2 miles northeast of .do. Stratford Point, 4.3 miles south of do. Stratford Point, 6.1 miles south of do. Port Jefferson Harbor entrance Crane Neck Point, 0.5 mile northwest of Bridgeport Hbr. ent., btn. jetties <14> Crane Neck Point, 3.4 miles WNW of Crane Neck Point, 3.7 miles WSW of Shoal Point, 6 miles south of Pine Creek Point, 2.3 miles SSE of Saugatuck River, 0.3 mi. NW of Bluff Pt Saugatuck R., 0.5 mile above Bluff Pt Sheffield I. Tower, 1.1 miles SE of . do. Sheffield I. Hbr., 0.5 mile southeast of Norwalk River, oft Gregory Point Eatons Neck Pt., 1.3 miles north of Eatons Neck Pt., 1.8 miles west of Eatons Neck Point, 2.5 n.mi. NNW of Eatons Neck Pt., 3 miles north of . do. do. Huntington Bay, off East Fort Point . do. Northport Bay entrance (in channel) Northport Bay, south of Duck I. Bluff Long Neck Point, 0.6 mile south of do. Lloyd Point, 1.3 miles NNW of do. Shippan Point, 1.3 miles SSE of do. Rocky Point, 1 mile east of Harbor ent., south of Plum Point Harbor, west of Soper Point Cold Spring Harbor Stamford Harbor entrance Greenwich Point, 1.1 miles south of . do. Greenwich Point, 2.5 miles south of do. Oak Neck Point, 0.6 mile north of do. Captain Hbr. Ent., 0.6 mile southwest of .do. Cos Cob Harbor, oft Goose Island Parsonage Point, 1.3 n.mi. ESE of Peningo Neck, 0.6 mi. off Parsonage Pt Matinecock Point, 0.7 mile NNW of. do. Matinecock Point, 1.7 miles northwest of
0.3 0.2 0.1 0.2 0.5 0.2 0.3 0.3 0.2 0.2 0.2 0.1 0.2 0.2 0.3 0.3 0.4 0.4 0.3 0.3
0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.9 283° 0.6 269° 0.2 229° 0.6 322° 1.4 283° 0.5 199° 0.6 263° 0.7 253° 0.6 264° 0.6 188° 0.5 190° 0.4 179° 0.4 100° 0.4 007° 0.8 252° 0.8 257° 1.0 255° 1.0 269° 0.9 239° 0.7 247°
0.3 0.2 0.2 0.2 0.1 0.1 0.1 0.2 0.2 0.3 0.2 0.3 0.3
0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.8 081° 0.5 076 0.4 042 0.5 155° 1.4 075 0.6 068° 0.6 073* 0.9 046° 0.6 078 0.5 054" 0.5 014° 0.3 007 0.4 267 0.3 286 0.5 073° 0.5 080° 0.9 055° 0.7 053° 0.9 055° 0.8 071°
3161 3166 3171 3176 3181 3186
40° 55.15' 40° 54' 40° 53' 40° 53' 41° 00.88 40° 59.02' 40° 59.02' 40° 57.60 40° 57.60 40° 55.50 40° 55.50' 40° 59.65' 40° 59.65' 41° 01' 40° 56.25' 40° 56.32 40° 54.80 40° 54.80' 40° 55.48'
73° 30.03 73° 31' 73° 32' 73° 29' 73° 32.20 73° 34.02 73° 34.02 73° 33.68 73° 33.68 73° 34.02 73° 34.02 73° 35.67' 73° 35.67' 73° 36' 73° 39.49 73° 40.50 73° 38.40 73° 38.40 73° 39.37
+0 32 +0 41 +0 23 +0 31 +0 07 +0 25 -001 -O 10 +0 37 +0 46 -004 +0 12 Current weak and variable -109 -O 56 - 158 -0 33 +1 34 +1 24 +1 48 +1 02 +1 37 + 1 17 +0 50 +104 +1 00 +0 36 +0 56 +0 30 -054 +0 22 -0 28 -O 16 +3 04 +2 24 +2 24 +2 12 +1 07 +2 01 +1 40 +1 52 +1 45 +2 10 +1 48 +2 01 +1 35 +1 40 +0 57 +1 59 +0 24 +0 11 -001 -0 54 +1 00 +0 50 +1 09 +1 01 +1 22 +0 49 +1 15 +0 28 +1 27 +0 53 +1 33 +0 37 +0 48 +0 33 +1 32 +0 21 +1 33 +1 25 +1 06 +1 03
0.1 0.3 0.2 0.3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.2 0.3 0.1
0.3 0.3 0.2 0.2 0.1 0.2 0.2 0.2 0.2 0.1 0.1 0.2 0.2 0.2 0.1
0.4 329° 0.7 258° 0.6 265° 0.7 242° 0.5 256° 0.5 260° 0.5 300° 0.6 312° 0.5 319° 0.5 013° 0.5 230° 0.7 226° 0.6 233° 0.7 262° 0.4 234°
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.8 0.8 0.4 0.7 0.4 0.6 0.5 0.7 0.7 0.4 0.4 0.7 0.6 0.5 0.4
134° 073° 069° 052 079° 072 090° 118 142° 188° 051° 035° 046 053° 055°
0.4 0.4 0.7 0.5 0.4 0.2 0.3 0.6 0.8 0.3
0.2 069 0.4 025° 0.6 058° 0.4 115° 0.2 098
0.2 0.3 0.4 0.3 0.3 0.1 0.2 0.4 0.5 0.2
234° 226° 246 307° 264 283 283* 216° 201° 143°
032° 040° 349° 348° 349° 352°
Current weak and variable -2 54 -336 -2 29 -348 --204 +0 07 -101 -2 32 -2 17 -2 32 -1 35 -2 46 +3 19 +2 58 +3 40 +2 56 -202 -3 24 -3 04 -3 18 -0 43 -0 31 -1 23 +0 24 -0 19 0 13 -106 -0 48 -0 54 -1 18 -1 27 -2 20 -1 06 -2 35 -2 08 +0 03 -0 30 -2 38 - 4 21 -3 14 -4 21 -1 59 -1 59 --039 -0 35 -2 44 -3 20 -254 -3 22 +302 +3 08 +3 04 +2 05 -056 -O 14 -146 -3 35 -2 14 -O 10 -1 12 -245 -0 35 -021 -2 18 +0 22 Daily predictions +0 57 +0 49 +1 33 +0 11 +0 21 +0 31 +1 13 +0 05 -024 +0 43 +0 50 -004
3466 3471 3476 3481 3486 3491 3496 3501
40° 47.4'. 40° 48.3 40° 48.8' 40° 49.7' 40° 50.5' 40° 51.8' 40° 52.4' 40° 52.6'
73° 56.1' 73° 55.8' 73° 56.1' 73° 56.1' 73° 55.9 73° 54.9 73° 54.7' 73° 55.3'
-008 0 30 -0 20 -0 20 -0 20 0 22 -0 23 +0 12
-003 000 +0 18 +0 14 +0 08 +0 05 +0 08 +0 31
-1 09 -0 12 -021 -022 -0 23 -O 22 -0 20 -0 31
-1 39 -O 13 -0 14 -O11 -0 08 -002 +004 +0 41
0.2 0.4 0.5 0.5 0.6 0.6 0.6 0.2
0.2 0.3 0.4 0.3 0.4 0.4 0.5 0.3
0.8 206° 1.2 140° 1.8 180° 1.7 180° 2.0 1899 2.0 215° 2.1 116° 1.8 137°
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.8 030° 1.3 330° 1.7 000° 1.4 000° 2.0 015° 2.0 035° 2.3 2999 1.3 326°
East 107th Street Willis Ave. Bridge, 0.1 mile NW of Madison Ave. Bridge Macombs Dam Bridge High Bridge West 207th Street Bridge Broadway Bridge Henry Hudson Bridge, 0.7 nmi. SE of LONG ISLAND, South Coast Fire Island Lighted Whistle Bouy 2FI Fire Island Inlet, 22 miles S of <17> Shinnecock Canal, railroad bridge <18> Ponquogue bridge, Shinnecock Bay Shinnecock Inlet Fire 1. Inlet, 0.5 mi. S of Oak Beach Jones Inlet Long Beach, inside, between bridges East Rockaway Inlet Ambrose Light Sandy Hook App. Lighted Horn Bouy 2A
3506 3511 3516 3521 3526 3531 3536 3541 3546 3551 3556
3651 3656 3661 3666 3671 3676 3681 3686 3691 3696 3701 3706 3711 3716 3721 3726 3731 3736 3741 3746 3751 3756 3761 3766 3771 3776 3781
40° 42.5' 40° 48.8 40° 48.8' 40° 51' 40° 53' 40° 54' 40° 54.7' 41° 01' 41°05' 41° 10' 41° 12' 41° 17' 41° 19' 41° 22' 41° 24' 41° 30' 41° 35' 41° 42'41° 47' 41° 56' 42° 00' 42° 04' 42° 09' 42° 13' 42° 15' 42° 21'42° 27' 42° 32' 42° 39' 42° 44'
Hudson River entrance Grants Tomb . do. George Washington Bridge Spuyten Duyvil Riverdale Mount St. Vincent College, SW of Dobbs Ferry Tarrytown Ossining Haverstraw Peekskill Bear Mountain Bridge Highland Falls West Point, off Duck Island Newburgh New Hamburg Poughkeepsie Hyde Park Kingston Point <21> Barrytown Saugerties Silver Point Catskill Hudson Coxsackie New Baltimore Castleton-on-Hudson Albany Troy (below the locks) <22> NEW YORK HARBOR, Lower Bay
74° 01.2' 73° 58.1' 73° 58.1' 73° 57' 73° 56' 73° 55' 73° 54.8' 73° 53' 73° 53' 73° 54' 73° 57' 73° 57' 73° 59' 73° 58' 73° 57' 74° 00' 73° 57' 73° 57' 73° 57'73° 57' 73° 56' 73° 56' 73° 54' 73° 51' 73° 48'73° 47' 73° 47' 73° 46' 73° 45' 73° 42'
+0 49 +1 10 +1 04 +141 +2 11 +2 11 +1 26 +2 30 +2 37 +2 50 +2 55 +3 10 +3 16 +3 24 +3 32 +3 50 +4 05 +4 26 +4 42 +5 09 +5 26 +5 43 +6 01 +6 16 +6 23 +6 45 +7 12 +7 35 +8 29
+1 12 +0 46 +1 18 +1 55 +2 08 +2 07 +2 00 +2 33 +2 46 +3 02 +3 08 +3 24 +3 31 +3 37 +3 47 +4 06 +4 20 +4 37 +4 48 +5 09 +5 21 +5 42 +6 14 +6 37 +6 45 +6 57 +7 04 +7 11 +7 32
+1 22 +1 42 +1 58 +1 50 +1 57 +2 02 +2 14 +2 24 +2 40 +3 05 +3 13 +3 33 +339 +344 +351 +4 03 +4 11 +4 21 +4 30 +4 54 +5 10 +5 29 +5 49 +6 09 +6 20 +6 55 +7 13 +7 12 +6 46
+2 18 +2 06 +1 27 +2 08 +2 24 +2 32 +2 29 +2 49 +3 02 +3 19 +3 26 +342 +3 48 +4 02 +4 04 +4 21 +4 33 +4 49 +5 00 +5 19 +5 26 +5 36 +5 50 +6 06 +6 15 +6 44 +7 09 +7 29 +7 47
1.4 1.9 1.8 2.2 2.1 2.0 1.4 1.7 1.5 1.3 1.3 1.2 1.1 1.2 1.1
0.8 1.0 1.1 0.9 0.9 0.8 0.9 0.8 0.6 0.5 0.5 0.5 0.5 0.6 0.5 0.5 0.6 0.6 0.7 0.8 0.8 0.9 0.9 0.9 0.9 0.9 0.8 0.5 0.2
0.7 0.9 0.9 1.1 1.1 1.0 0.7 0.9 0.8 0.7 0.7 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.7 0.8 0.9 1.0 1.0 1.0 1.0 0.9 0.8 0.6 0.4
0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
1.4 009° 1.6 024° 1.8 025° 1.6 020° 1.6 020o 1.4 015° 1.5 007° 1.3 010° 1.1 000° 0.9 320° 0.8 0.8 000° 0.8 000° 1.0 005° 1.0 010° 0.9 005° 1.0 005° 1.1 005° 1.2 005° 1.3 005° 1.4 010° 1.5 000° 1.5 030° 1.6 355° 1.6 030° 1.6 350° 1.3 0.9 015° 0.3 020°
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
1.1 1.2 1.3 1.6 1.7 1.9 2.0 2.0 2.0 1.8 1.5 1.2 0.8 0.7
3786 3791 3796 3801 3806 3811 3816 3821 3826 3831 3836 3841
-203 - 1 55 -200 -2 30 -3 36 -2 07
40° 29.1'. 40° 28.79 40° 28.8 40° 29.90 40° 32.4' 40° 31.1' 40° 32.9' 40° 32.8' 40° 33.1' 40° 35' 40° 31.8 40° 34.2'
-1 23 - 1 50 -142 -2 08 -4 16 -202
Sandy Hook Channel Sandy Hook Chan., 0.4 mi. W of N. Tip Sandy Hook Pt., 2 mi. W of (channel) Chapel Hill South Channel New Dorp Beach, 1.2 miles south of . Old Orchard Shoal Lt., 1.2 mi, ENE of New Dorp Beach, 1.8 miles SE of <23> Midland Beach, 2.6 miles SE of <24> Coney Island Lt., 1.5 miles SSE of Hoffman Island, 0.2 mile west of Rockaway Inlet Jetty, 1 mile SW of Coney Island Channel, west end
1.0 1.2 0.4 0.4 0.2 0.4 0.3 0.5 0.6 0.5 0.7 0.6
74° 00.1'. 74° 01.30 74° 03.6' 74° 02.8' 74° 05.8' 74° 04.36' 74° 03.7' 74° 02.35 74° 00.3' 74° 04' 73° 57.2 74° 00.5
0.9 0.8 0.3 0.3 0.2 0.2 0.3 0.6 0.6 0.4 0.7 0.6
1.6 286° 2.0 235° 0.6 263° 0.7 255° 0.4 225° 0.7 270° 0.5 045° 0.8 335° 1.1 310° 0.9 020o 1.2 287° 1.1 293°
1.9 094° 1.6 050° 0.6 086° 0.6 075° 0.5 030° 0.4 085° 0.5 225° 1.3 160° 1.3 125° 0.8 210° 1.4 142° 1.2 102°
000 -1 27 1 43 -2 16 - 1 21
+007 -1 56 -1 48 -2 12 -0 44
0 00 0 58 0 17 -1 28 -0 24
+0 01 -0 53 -0 50 -143 -0 48
Page 10
-005 -1 26 +0 21 -023 -0 44 +0 22 -0 55
4036 4041 4046 4051 4056 4061 4066 4071
0.0 0.1 0.0 0.2 0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.0 0.0
0.0 0.1 0.0 0.2 0.2 0.0 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.1
-1 30 -1 11 -1 18 -102 -105 -100 -1 08 -0.47 Daily predictions +0 07 -0.40 +004 0 24 +0 21 -003 -1 11 -042 -1 00 -044 +0 39 +0 41 -0 50 -1 14 +2 10 +0 08 -003 +2 29 +1 49 +0 05 +0 03 -0 51 -0.45 -009 -0 05 +0 06 -006 +0 01 +0 020 00 -0 05 -051 -041 +0 13 +0 04 +0 03 +0 13 +007 +0 10 +0 13 +0 29 +004 -0 08 -0 26 -0 31 +0 03 +0 21 +0 45 +1 04 +1 27 +1 24
-0 36 +2 34 -0 29 -0 31 007 -0 35 -009 0 36 -044 +0 07 +0 10 -0 20 +0 10 -023 -053 +0 40 +0 51 +1 01
Cape May Channel Cape May Point, 1.4 n.mi. SSW of . do. Cape May Point, 2.7 n.mi. SSW of DELAWARE BAY ENTRANCE Cape Henlopen, 0.7 n.mi. ESE of do. Cape Henlopen, 2 miles northeast of Cape Henlopen, 4.8 n.mi. northeast of do. Cape Henlopen, 5 miles north of Breakwater Harbor Roosevelt Inlet (between jetties) <27> Broadkill Slough Mispillion River mouth Bay Shore Channel (north) Bay Shore Channel (city of Town Bank) Brandywine Ra. (off Brandywine Shoal S) Brandywine Ra. (oft Brandywine Shoal N) do. Big Stone Beach, 2.8 miles southeast of Big Stone Beach, 2.2 n.mi. ENE of Fourteen Ft. Bank Lt., 1.4 n.mi. SSE of do. Fourteen Ft. Bank Lt., 1.2 mi. east of Deadman Shoal, 3.1 n.mi. SW of Egg Island Flats Brandywine Range at Miah Mall Range Maurice River entrance Mauricetown Bridge, Maurice River Millville Drawbridge, Maurice River <28> St. Jones River ent., 1 mile east of Kelly Island, 1.5 miles east of Miah Maull Range at Cross Ledge Range False Egg Island Point, 2 miles off Ben Davis Pt. Shoal, southwest of Ben Davis Point, 3.2 n.mi. SW of do. Ben Davis Point, 0.8 mile southwest of Cohansey River, 0.5 mile above entrance Bridgeton (Broad Street Bridge) <1> Arnold Point, 2.2 n.mi. WSW of do. Smyrna River entrance Stony Point, channel west of Appoquinimink River entrance Artificial Island (Baker Range) Reedy Island (off end of pier) Alloway Creek ent., 0.2 mile above
38° 54' 38° 54.37 38° 54.37' 38° 53.40' 38° 46.85 38° 47.97 38° 47.97' 38° 49.2 38° 51.55' 38° 51.55 38° 53.0' 38° 47.6 38° 47.5 38° 53.78' 38° 56.8' 39° 04.68 38° 59.08' 38° 58.98 38° 58.98 39° 00.37 39° 00.37' 38° 58.7'. 39° 00.48 39° 02.32' 39° 02.32' 39° 03.3' 39° 04.00 39° 06.4' 39° 04.97 39° 13.0' 39° 17.2' 39° 23.7' 39° 04' 39° 12.8' 39° 10.72' 39° 11.4' 39° 14.87' 39° 16.13' 39° 16.13' 39° 16.9' 39° 20.9 39° 25.6' 39° 22.67 39° 22.67' 39° 21.9' 39° 27.1 39° 26.8 39° 28.2039° 30.7' 39° 29.9'
74° 58' 74° 58.68 74° 58.68 74° 59.13' 75° 02.58 75° 04.90' 75° 04.90' 75° 03.4'. 75° 01.47' 75° 01.47 75° 05.3' 75° 06.5' 75° 09.5' 75° 12.63' 75° 18.9' 74° 58.88 74° 59.28 75° 07.65' 75° 07.65' 75° 08.38' 75° 08.38 75° 16.6' 75° 17.05 75° 09.48' 75° 09.48' 75° 09.5' 75° 04.22' 75° 07.1' 75° 11.28 75° 02.7' 74° 59.6 75° 02.4 75° 23'75° 21.7' 75° 16.40' 75° 12' 75° 18.93' 75° 20.88 75° 20.88 75° 18.2' 75° 21.6 75° 14.2' 75° 28.07' 75° 28.07 75° 30.8 75° 33.8 75° 34.9 75° 33.88 75° 33.4' 75° 31.5
1.5 306° 1.5 309° 1.1 306° 1.2 299° 1.4 327° 1.8 331° 1.2 317° 2.0 315° 1.5 322° 1.0 301° 2.0 344° 0.8 266° 0.7 206° 0.8 314° 1.5 025° 0.8 006° 0.9 006° 1.3 337° 0.8 3310 1.2 339° 0.6 334° 0.7 326° 0.6 319° 1.2 344° 0.9 343° 1.3 339° 0.8 352° 0.7 355° 1.0 341° 1.1 012° 2.4 000° 0.2 000° 0.6 334° 0.9 348° 1.5 335° 1.1 342° 1.8 321° 1.9 328° 0.8 319° 1.2 308° 1.2 074° 0.2 000° 2.1 324° 1.6 327° 1.2 250° 1.5 324° 1.0 231° 2.1 346° 2.4 027° 2.1 129°
-003 +0 16 +0 59 -003 +0 05 +1 08 -0 14 +1 15 +0 01 +2 14 +0 52 +0 35 +0 18 +0 45 +0 27 +0 24 -O11 +1 00 +1 06 +0 51 +1 01 +0 37 -0 30 +1 40 +1 35 +1 29 +2 47 +0 47 +1 12 +2 27 +1 02 +2 37 +2 51 +3 09 +1 21 +1 49 +2 52 +3 10 +2 30 +2 28 +3 27 +2 55 +4 06 +344 +2 17
4096 4101 4106 4111 4116 4121 4126 4131 4136 4141 4146 4151 4156
2.3 150° 1.8 130° 1.2 139° 0.9 146° 1.3 147° 2.4 139° 0.7 150° 2.3 145° 1.8 150° 1.2 154° 1.9 173° 0.9 078° 1.1 030° 0.6 132° 1.0 190° 0.7 183° 1.0 183° 1.4 157° 0.8 147° 1.1 164° 0.6 153° 0.9 145° 0.7 135° 1.2 160° 0.7 155° 1.5 174° 0.6 173° 0.7 150° 1.2 159° 1.0 192 2.2 180° 0.4 180° 0.7 122° 1.2 164° 1.8 160° 1.3 158° 1.9 147° 2.2 140° 0.4 136° 0.8 122° 1.4 254° 0.3 180° 1.9 145° 1.3 140° 1.5 070° 1.9 151° 1.2 048° 2.7 175° 2.6 194° 2.1 325°
1.3 1.8 0.8 0.5 1.4 1.8 1.1 1.4 0.7 0.9 1.4 1.5 0.6 0.7 0.5 0.8 0.5 0.5 1.1 0.8 0.6 0.5 0.7 0.7 0.9 1.0 0.6 0.6 0.8 0.8 0.5 0.4 0.5 0.7 0.4 0.5 0.9 0.9 0.7 0.5 0.9 1.2 0.6 0.5 0.5 0.5 0.7 0.9 0.8 0.8 1.7 1.7 0.1 0.3 0.4 0.5 0.6 0.9 1.1 1.4 0.8 1.0 1.3 1.4 1.4 1.7 0.6 0.3 0.9 0.6 0.9 1.1 0.1 0.2 1.5 1.4 1.2 1.0 0.9 1.2 1.1 1.5 0.7 0.9 1.5 2.0 1.7 2.0 1.5 1.6
0.1 0.0 0.0 0.1 0.1 0.0 0.1 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.2 0.2 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.2 0.0 0.0
-001 +0 51 + 1 19 +0 27 +1 48 +2 06 +1 01 +0 57 +1 30
+0 11 +0 44 +1 27 +0 13 +1 30 +1 51 +2 15 +1 13 +1 31
0.0 0.0 0.1 0.0 0.1 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0
-001 +0 50 +0 41 +004 +1 30 +1 38 +1 17 +0 58 +1 20 +2 27 +2 18 +2 08 +1 41 +2 49 +2 54 +2 38 +3 00 +2 41
+2 23 +1 50 +1 49 +3 24 +2 34 +302 +3 02 +2 22
+2 27 +2 16 +1 57 +2 30 +2 14 +2 46 +2 46 +2 11
Endnotes can be found at the end of table 2.
1.1 1.5 1.8 1.3 1.6 1.2 1.6 1.6
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
4211 4216 4221 4226 4231 4236 4241 4246 4251 4256 4261 4266 4271 4276 4281 4286 4291 4296 4301 4306 4311 4316 4321 4326 4331 4336 4341 4346
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0
+3 04 +6 05 +3 19 +3 20 +3 35 +3 47 +3 25 +3 17 +3 31 +3 35 +3 39 +3 23 +3 37 +3 44 +3 52 +3 45 +3 53 +4 10 +4 29 +4 15 +4 59 +5 26 +4 10 +4 49 +4 54
+3 28 +6 31 +2 46 +3 00 +2 52 +3 29 +3 01 +2 55 +3 25 +3 17 +3 06 +3 00 +2 58 +3 16 +3 31 +3 37 +2 33 +3 54 +3 55 +357 +3 54 +4 23 +3 56 +4 36 +4 34
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
New Bridge, Alloway Creek Chesapeake and Delaware Canal Entrance Reedy Point, 0.4 mile east of Reedy Point, 1.1 miles east of Reedy Point, 0.85 n.mi. northeast of Salem River entrance Bulkhead Shoal Channel, SE, Del. City Bulkhead Shoal Channel, off Del. City Pea Patch Island, channel east of Finns Point, 0.60 n.mi. Northwest of Penns Neck, 0.6 mile west of Penns Neck, 0.3 mile west of New Castle, channel abreast of Kelly Point, 0.2 mile northwest of Riverview Beach, 0.75 n.mi. west of Deepwater Point, channel northwest of Christina River, 0.9 n.mi. above ent Cherry Island Flats, channel east of Oldsmans Point Marcus Hook Bar (north), Main Channel Marcus Hook Eddystone Essington Harbor Crab Point, 0.5 mile east of Hog Island, channel southeast of Schuylkill River entrance <1> Schuylkill River <1> Eagle Point, 0.2 n.mi. northwest of do. Gloucester Greenwich Point, northeast of Camden Marine Terminals, E of Chan. <29> Petty Island (west end), Main Channel Fisher Point Fivemile Point Bridge, northeast of Torresdale, west of channel Rancocas Creek, off Delanco College Point, 0.4 n.mi. east of Bristol, south of Burlington Island, channel east of Newbold Island north of, Main Channel Whitehill <30>
39° 31.6 39° 33.63' 39° 33.53 39° 33.58 39° 34.23 39° 34.2 39° 34.58' 39° 35.0 39° 36.0 39° 36.37' 39° 37.05' 39° 37.07' 39° 39.1' 39° 38.9' 39° 39.40 39° 42.1'. 39° 43.30' 39° 44.3 39° 45.9' 39° 47.70 39° 48.2 39° 50.8' 39° 51.5' 39° 50.8 39° 52.0 39° 53.2' 39° 54.23' 39° 52.82' 39° 52.82 39° 53.4' 39° 54.5' 39° 56.4' 39° 58.03 39° 58.9' 39° 59.18 40° 02.4' 40° 02.6' 40° 04.65' 40° 05.3' 40° 05.7 40° 08.03 40° 08.2
75° 27.1' 75° 34.20 75° 33.13' 75° 32.47' 75° 33.22 75° 30.1'. 75° 34.52' 75° 35.2' 75° 33.9' 75° 34.47 75° 34.92 75° 34.58' 75° 33.2' 75° 32.8 75° 32.38' 75° 30.6' 75° 31.77'. 75° 29.1' 75° 28.4' 75° 26.08 75° 24.6 75° 20.5' 75° 18.3 75° 17.0 75° 12.9' 75° 11.7 75° 12.90' 75° 10.38 75° 10.38' 75° 08.1' 75° 07.6' 75° 08.2 75° 07.13 75° 04.2 75° 03.75 74° 59.4'. 74° 57.6 74° 53.20 74° 51.6 74° 50.2 74° 45.38 74° 44.2
+3 56 +5 30 +3 01 +3 10 +2 35 +3 32 +2 44 +2 57 +3 12 +3 07 +3 37 +3 06 +2 52 +3 54 +3 22 +3 53 +3 15 +4 07 +341 +3 26 +4 18 +4 40 +3 53 +4 43 +4 52 +3 19 +2 31 +359 +3 44 +5 01 +4 52 +5 12 +4 49 +5 45 +4 52 +5 55 +6 24 +4 54 +5 30 +5 45 +4 29
+3 57 +6 16 +4 21 +357 +3 51 +4 30 +4 03 +4 05 +4 30 +4 14 +3 52 +3 58 +3 54 +3 52 +4 28 +4 16 +3 50 +4 18 +5 01 +4 49 +5 12 +5 16 +4 17 +5 19 +5 13 +4 29 +3 51 +4 58 +4 57 +5 21 +5 22 +5 28 +5 00 +5 27 +4 20 +6 07 +6 29 +4 50 +6 31 +7 07 +351 +7 28
0.9 1.0 1.3 1.3 1.2 1.1 1.3 1.5 1.6 1.5 1.2 1.3 1.4 1.1 1.4 2.1 0.2 1.1 1.1 1.4 1.2 1.2 1.0 1.5 1.4 0.4 0.2 1.1 0.8 1.6 1.1 0.9 1.3 1.0 1.1 0.6 0.7 0.8 0.9 0.6 0.5
1.3 090° 1.4 264° 1.8 333° 1.8 354° 1.6 341° 1.5 062° 1.8 299° 2.1 308° 2.3 319° 2.1 332° 1.7 002° 1.8 339° 051° 1.6 049° 2.0 038° 3.0 029° 0.2 303° 1.6 027° 1.6 027° 1.9 059° 1.7 061° 1.7 058° 1.4 096° 2.1 094° 1.9 054° 0.5 356° 0.2 351° 1.6 091° 1.1 090° 2.2 020° 1.6 002° 1.3 005° 1.8 066° 1.4 041° 1.5 038° 0.9 044° 1.0 090° 1.2 084° 1.3 024° 0.9 018° 0.7 084°
1.7 1.3 1.3 1.8 1.2 1.5 2.0 0.6 1.1 1.2 1.3 1.2 1.7 0.9 1.5 1.7 0.3 0.2 1.3 1.0 1.5 1.2 0.8 1.3 1.3 1.0 1.2 0.7 0.9 1.2 1.4 0.4 1.1
1.4 270° 2.0 087° 2.3 166° 1.7 179° 2.2 163° 1.6 245° 2.1 118° 2.1 138° 2.3 148° 2.3 152° 1.7 167° 1.7 152° 2.4 230° 1.5 230° 1.9 225° 2.6 215° 0.8 137° 1.4 207° 1.5 210° 1.7 246° 1.6 232° 2.2 242° 1.2 274° 1.9 268° 2.2 231° 0.4 178° 0.3 172° 1.8 271° 1.3 274° 2.0 210° 1.6 188° 1.1 174° 1.8 248° 1.7 223° 1.3 214° 1.6 223° 0.9 272 1.2 252° 1.6 200° 1.8 204° 0.5 250° 1.4 233°
+5 13 +5 07 +5 14 +5 19 +5 53 +5 34 +6 08 +5 29 +6 55 +6 37 +6 34 +6 56 +7 33 +6 27
+4 27 +4 22 +4 45 +4 46 +5 08 +4 40 +5 15 +4 33 +4 51 +5 43 +5 01 +4 49 +4 08 +4 28
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.0 0.0 0.0 0.0 0.0 0.0 0.0
Endnotes can be found at the end of table 2.
75° 59.98 75° 59.98 76° 00.63' 76° 00.63' 76° 00.63' 75° 59.88' 75° 59.3' 75° 59.55' 76° 04.9' 76° 05.6'
+0 03 -004 -141 -1 36 +0 25 +1 00 +0 10 +0 55 +0 07 +634 Daily predictions +0 09 +0 19 -009 -0 26 +0 18 +0 15 -1 10 -1.43
36° 56.33 36° 56 33' 36° 57.53' 36° 57.53 36° 57.53' 36° 58.80' 37° 00.1' 37° 01.40' 36° 55.1' 36° 54.4'
1.0 298° 1.1 275° 1.2 289° 1.2 277° 0.9 263° 0.8 300° 1.3 294° 0.6 307° 0.8 280° 0.6 180°
1.7 113° 1.2 106° 1.1 110° 0.7 110° 0.5 111° 1.2 129° 1.3 104° 0.7 140° 0.9 070° 1.4 000°
Cape Henry Light, 1.1 n.mi. NNE of do. Cape Henry Light, 2.0 n.mi. north of . do. do. CHESAPEAKE BAY ENTRANCE Cape Henry Light, 4.6 miles north of Cape Henry Light, 5.9 n.mi. north of Lynnhaven Roads Lynnhaven Inlet bridge Chesapeake Bay Bridge Tunnel Chesapeake Beach, 1.5 miles north of Thimble Shoal Channel (Buoy "10") do. Tail of the Horseshoe Cape Henry Light, 8.3 mi. NW of Chesapeake Channel (bridge tunnel) Chesapeake Channel (Buoy "11") Fisherman Island, 3.2 miles WSW of Fisherman Island, 1.4 miles WSW of Fisherman I.Bridge 1.4 n.mi. S of do. Fisherman I. Bridge, 0.7 n.mi. S of Fisherman I., 0.4 mile west of Fisherman I., 1.4 n.mi. WNW of Fisherman I., 1.1 miles northwest of Cape Charles, off Wise Point Little Creek, 0.2 n.mi. N of east jetty Butler Bluff, 2.1 n.mi. WSW of York Spit Channel, N of Buoy "26" Old Plantation Flats Lt., 0.5 mi. W of Cape Charles City, 3.3 n.mi. west of
4521 4526 4531 4536 4541 4546 4551 4556 4561 4566
36° 56.69' 36° 58.73' 36° 58.73' 36° 59.57' 37° 02.20' 37° 02.50 37° 03.40' 37° 03.40' 37° 04.00' 37° 04.78' 37° 03.37' 37° 03.37' 37° 04.85' 37° 05.57' 37° 06.10' 37° 06.50 37° 06.88' 36° 56.05' 37° 09.37' 37° 12.90' 37° 14.00 37° 15.87' 37° 15.87' 37° 15.87' 37° 17.40' 37° 23.4' 37° 23.1' 37° 24.20 37° 24.50 37° 24.50 37° 24.50 37° 24.50 37° 24.50 37° 24.67'. 37° 25.00 37° 29.97' 37° 29.70' 37° 29.70 37° 30.03 37° 35.0 37° 33.8' 37° 35.45 37° 34.60' 37° 34.60'
76° 07.33'
+0 29 -004 -0 55 +0 05 +0 16 +0 05 -0 30 -021 0 22 -109 -0 19 -0 37 -0 57 -021 -0 28 -0 39 +0 09 -101 +0 02 +1 33 +1 31 +0 38 +0 16 +0 29 +1 07 +1 43 +2 23 +0 46 +1 40 +0 26 +1 43 +1 07 +0 24 +1 38 +0 03 +1 16 +2 03 +0 33 +0 59 +2 28 +2 18 +1 21 +2 18 +1 06
+0 48 +0 30 +0 15 +0 30 +0 43 +0 38 +0 33 +0 27 -0 12 -002 0 29 -0 19 -0 15 -008 -0 14 +0 20 +0 37 -1 18 +0 14 +1 50 +2 01 +1 18 +0 43 +1 00 +1 22 +2 00 +2 40 +1 37 +1 58 +0 55 +2 34 +2 24 +1 22 +2 16 +0 33 +1 43 +3 03 +1 07 +0 54 +3 36 +3 00 +1 29 +257 +1 22
+0 06 +0 45 +1 25 +0 16 +0 45 +0 32 +0 50 +0 57 -0 17 -0 12 -O 15 -0 16 -0 24 -006 +0 12 +0 23 +0 56 -0 39 +0 57 +1 24 +1 55 +1 03 +1 10 +1 37 +0 46 +1 34 +2 14 +1 36 +2 28 +1 27 +2 41 +2 43 +2 05 +1 52 +1 05 +1 56 +2 48 +1 46 +0 54 +3 21 +2 09 +1 54 +3 04 +307
+000 +0 16 -0 17 +0 28 +0 26 +0 19 +0 38 -007 -0 36 -102 -0 26 -0 34 -0 35 -0 42 -0 27 -0 19 +1 20 -101 +0 02 +1 26 +1 06 +101 +0 30 +1 24 +0 46 +1 36 +2 16 +0 50 +2 11 +107 +2 09 + 1 19 +1 11 +1 19 +0 08 +1 36 +2 33 +0 23 +0 22 +2 32 +2 36 +1 23 +2 46 +2 14
1.0 0.7 1.4 0.6 0.8 0.2 0.8 1.2 0.9 2.2 1.2 0.8 0.4 0.7 0.3 1.5 1.3 2.2 0.9 1.2 1.1 1.0 0.8 1.9 1.5 2.5 1.6 1.4 1.0 2.2 1.3 0.9 0.2 0.4 0.3 0.9 0.7 1.0 0.9 1.5 1.0 1.2 0.8 1.1 0.7 1.2 0.7 1.0 0.8 1.2 1.0 1.1 1.0 0.6 0.3 1.6 0.9 0.8 0.5 1.6 0.9 1.3 0.5 1.0 0.5 1.4 0.9 0.7 0.4 0.8 0.5 1.2 0.9 0.7 0.4 0.6 0.4 1.2 0.7 1.2 0.6 0.8 0.5 1.1 0.7 0.6 0.3
0.8 305° 1.1 302° 0.7 285° 0.9 300° 1.0 329° 1.8 335° 0.6 311° 0.6 309° 1.2 330° 1.8 330° 1.0 297° 0.8 290° 1.5 306° 2.0 005° 1.2 333° 1.8 355° 0.7 305° 0.3 278° 0.8 348° 0.8 010° 1.2005° 1.0 355° 0.9 356° 1.0 322° 0.8 018° 1.0 015° 0.9 015° 0.4 003° 1.3 006° 0.7 012° 1.3 010° 1.0 352° 0.8 343° 1.1 005° 0.6 345° 0.6 352° 357° 0.6 013° 0.5 1.0 343° 1.0 030° 0.6 015° 0.9 359° 0.5 017°
0.9 100° 0.7 122° 0.3 105° 1.0 110° 1.1 133° 1.5 145° 0.4 125° 0.4 139° 1.6 135° 1.1 140° 1.4 126° 1.0 120° 1.9 140° 2.0 175° 1.2 155° 1.6 165° 0.2 075° 0.3 092° 0.8 164° 1.1 195° 1.3 175° 1.0 187° 0.8 182° 0.8 138° 1.0 202° 1.2 190° 1.3 175° 0.4 177° 1.1 191° 0.7 173° 1.1 187° 0.7 183° 0.6 158° 1.2 175° 0.6 166° 0.6 178° 1.1 175° 0.5 209° 0.5 159° 0.9 179° 0.8 175° 0.6 201° 0.8 182° 0.4 172°
do. New Point Comfort, 4.1 n.mi. ESE of Wolf Trap Light, 0.5 mile west of Wolf Trap Light, 5.8 miles east of Church Neck Point, 1.9 n.mi. W of Wolf Trap Light, 6.1 n.mi. ENE of .do. Wolf Trap Light, 5.2 n.mi. ENE of . do. do. Wolf Trap Light, 1.4 n.mi. NNE of Wolf Trap Light, 2.0 n.mi. NW of Nassawadox Point, 1.9 n.mi. NW of Gwynn Island, 8.0 n.mi. east of'. do. Gwynn Island, 1.5 n.mi. east of Stingray Point, 5.5 miles east of Stingray Point, 12.5 miles east of Powells Bluff, 2.2 n.mi. NW of Windmill Point Light, 8.3 n.mi. ESE of .do.
150 140 290 150 400 630 150 140 13d 140 280 160
Endnotes can be found at the end of table 2.
140 35d 13d 380 130 33d 150 140 390 9d 140 240 150 340 140 390 680 80
0.8 0.8 0.7 0.6 0.4 0.5 0.6 0.5 0.8 0.5 0.7 0.4 0.5 0.5 0.5 1.0 0.5 1.1 0.5 0.6 0.5 0.4
0.7 0.3 0.5 0.3 0.6 0.2 0.6 0.4 0.2 0.3 0.6 0.4 0.6 0.2 0.6 0.4 0.3 0.6 0.8 0.4 0.3 0.1
Windmill Point Light, 2.2 n.mi. ESE of do. Milby Point, 5.3 n.mi. WNW of do. Bluff Point, 4.6 n.mi. east of do. Tangier Sound Light, 5.8 n.mi. west of Great Wicomico A. Lt., 3.8 n.mi. ESE of do. Smith Point Light, 6.7 n.mi. east of Smith Point Light, 4.5 n.mi. east of do. Smith Point Light, 3.0 n.mi. east of do. Smith Point Light, 1.5 n.mi. east of do. do. Smith Point Light, 0.8 n.mi. NW of Smith Point Light, 6 miles north of Smith Island, 3.6 n.mi. northwest of Point Lookout, 5.9 n.mi. ESE of do. Point Lookout, 1.5 n.mi. east of Point Lookin Adams Island, 1.1 n.mi. west of Adams Island, 3.4 n.mi west of Point No Point, 4.3 n.mi. east of Point No Point, 2.8 n.mi. east of do. Point No Point, 1.0 n.mi. east of Hooper Strait (west), at buoy "2"
0.6 0.6 0.6 0.5 0.4 0.4 0.5 0.4 0.6 0.4 0.5 0.4 0.4 0.4 0.4 0.8 0.4 0.9 0.4 0.5 0.4 0.4
001° 342° 016° 043 003° 013° 344° 355° 013° 352° 341° 347° 342° 348° 347° 013° 356° 021° 350° 014° 340° 330°
37° 35.30' 37° 35.30' 37° 39.85' 37° 39.85' 37° 40.70 37° 40.70 37° 47.03' 37° 47.00 37° 47.00' 37° 52.83' 37° 52.67' 37° 52.67' 37° 52.65' 37° 52.65' 37° 52.75' 37° 52.75' 37° 52.75' 37° 53.23' 37° 58.9' 38° 00.45' 38° 00.88 38° 00.88' 38° 02.30 38° 06.6' 38° 08.67' 38° 08.38 38° 08.13' 38° 08.38 38° 08.38' 38° 08.43 38° 13.25'
76° 11.50 76° 11.50 76° 00.52 76' 00.52 76° 12.25' 76° 12.25 76° 05.68' 76° 11.50 76° 11.50 76° 02.65' 76° 05.30 76° 05.30' 76° 07.08 76° 07.08 76° 09.12 76° 09.12 76° 09.12 76° 11.90 76° 11.4' 76° 07.28 76° 12.12 76° 12.12 76° 17.50 76° 13.1' 76° 06.87 76° 09.80 76° 13.75' 76° 15.67 76° 15.67 76° 18.13' 76° 06.20
+2 49 +2 38 +2 21 +2 29 +1 08 +1 35 +2 01 +144 +2 13 +2 30 +2 28 +2 32 +0 33 +0 12 +1 12 +0 40 +3 10 +3 25 +2 25 +2 46 +1 30 +201 +2 32 +2 01 +3 34 +4 09 +3 56 +3 26 +3 20 +4 17 +3 54 +352 +2 11 +3 27 +4 50 +3 22 +2 29 +2 57 +2 45 +1 59 +3 27 +4 04 +3 49 +3 35 +3 18 +3 27 +3 09 +3 06 +4 30 +4 55 +342 +3 32 +2 15 +2 22 +3 16 +3 34 +4 27 +4 33 +3 44 +4 23 +2 49 +4 21 +4 29 +3 34 +2 10 +2 42 +4 09 +2 37 +2 28 +2 45 +3 13 +2 27 +4 28 +4 30 +4 19 +4 06 +2 48 +3 12 +3 39 +3 18 +345 +4 53 +4 57 +4 15 +2 45 +4 30 +4 36 +3 32 See Rotary tidal currents, table 5. +5 13 +6 10 +5 04 +4 46 +4 35 +348 +2 57 +3 26 +4 58 +5 10 +4 03 +4 38 +4 49 +5 33 +6 04 +5 45 +5 21 +5 32 +4 44 +5 06 +3 37 +5 00 +5 42 +4 54 +4 42 +5 06 +4 31 +4 34 +2 05 +2 28 +2 33 +1 40
0.9 0.4 0.7 0.4 0.7 0.2 0.7 0.5 0.3 0.4 0.7 0.5 0.7 0.3 0.7 0.5 0.3 0.8 1.0 0.4 0.4 0.2
169° 175° 210° 197° 178° 185° 185° 196° 196 178° 171° 168° 167° 149° 159° 176° 160° 150° 135° 187° 161° 167°
4711 4716 4721 4726 4731 4736
120 160 170 150 39d 170 150
0.5 0.1 0.2 0.4 0.3 0.4 0.4 0.7
0.4 0.2 0.3 0.2 0.4 0.1 0.4 0.4
010° 017° 325° 340° 340° 347° 001° 035°
0.5 160° 0.3 191° 0.4 167° 0.2 170° 172 0.2 162° 0.5 172° 0.6 233°
Cedar Point, 2.9 n.mi. ENE of do. Cedar Point, 1.1 miles ENE of Drum Point, 2.8 miles northeast of Cove Point, 1.1 n.mi. east of do. Cove Point, 2.7 n.mi. east of .do. do. Cove Point, 3.9 n.mi. east of Cove Point, 4.9 n.mi. NNE of do. do. Kenwood Beach, 1.5 miles northeast of James Island, 3.4 miles west of James Island, 2.5 miles WNW of Plum Point, 1.4 miles ESE of Sharp Island Li., 2.3 n.mi. SE of Sharp Island Lt., 2.1 n.mi. west of Sharp Island Lt., 3.4 n.mi. west of
170 400 150 400 980 110 150 400 670
38° 18.65' 38° 18.65' 38° 18.27 38° 20.18 38° 22.88 38° 22.88 38° 22.80 38° 22.80' 38° 22.80' 38° 22.52' 38° 28.03 38° 28.03 38° 28.03' 38° 31.1' 38° 31.5 38° 32.0' 38° 36.75 38° 36.43 38° 38.60' 38° 38.63' 38° 38.63 38° 38.70
76° 18.80 76° 18.80' 76° 21.10 76° 21.95 76° 21.62 76° 21.62 76° 19.52 76° 19.52 76° 19.52' 76° 17.92 76° 22.60 76° 22.60' 76° 22.60 76° 28.9 76° 25.2 76° 23.6' 76° 28.65' 76° 20.88 76° 25.22 76° 26.88 76° 26.88 76° 29.23'
-2 34 -3 30 -2 50 -3 12 -2 42 -3 19 -241 -2 39 -4 02 -3 36 -2 29 -247 -3 38 -241 -2 39 -2 42 -1 37 - 3 34 -1 36 -141 -2 23 -151
2 57 3 22 -2 23 3 15 349 3 29 2 57 3 23 3 55 1 56 -2 16 -2 31 1 31 3 15 149 1 39 -2 34 -150
-255 --3 15 -342 -242 -2 14 -3 26 -240 - 2 40 -3 36 -344 - 2 26 -2 17 -2 58 -2 37 -202 -2 36 - 204 -2 54 -1 33 -143 2 24 -201
0.5 0.5 0.5 0.2 0.9 0.8 0.5 0.9 0.7 0.4 0.7 1.0 0.6 0.2 0.5 0.5 0.2 0.8 0.4 0.4 0.4 0.4
- 2 40 2 38 -2 59 - 153 -3 13 - 4 08 - 2 24 - 158 -2 14 -2 46 -301 - 2 18 -2 20 --307 1 33 1 57 -2 23 -151
0.8 0.3 0.8 0.5 0.9 0.7 0.9 0.6 0.5 0.6 0.7 0.4 0.4 0.4 0.4 0.6 0.7 0.7 0.5 0.5 0.4 0.5
0.4 347° 0.4 326° 0.4 010° 0.2 335° 0.7 342° 0.6 343° 0.4 344° 0.8 347° 0.6 341° 0.3 346° 0.6 333° 0.8 332° 0.4 321° 0.2 340° 0.4 005° 0.4 000° 0.2 000° 0.7 037° 0.4 357° 0.3 355° 0.3 353° 0.3 350°
0.7 0.3 0.6 0.4 0.7 0.6 0.7 0.5 0.4 0.4 0.6 0.3 0.4 0.3 0.3 0.5 0.6 0.6 0.4 0.4 0.3 0.4
164° 141° 185° 185° 165° 165° 169° 170° 165° 171° 159° 149° 135° 160° 175° 175 155° 203" 183 186 183° 174"
4786 4791 4796 4801 4806 4811 4816
Plum Point, 2.1 n.mi. NNE of
Endnotes can be found at the end of table 2.
4836 4841 4846 4851 4856 4861 4866 4871
0.6 0.6 0.5 0.2 0.6 0.6 0.6 0.9 0.5 0.6 1.0 0.7 0.6 0.9 1.1 0.8 1.2 1.0
0.8 0.5 0.4 0.4 0.6 0.5 0.6 0.6 0.4 0.6 1.3 0.7 0.9 1.1 0.9 0.6 1.5 1.0
Poplar Island, 2.2 n.mi. WSW of Poplar Island, 3.0 n.mi. WSW of do. Holland Point, 2.0 n.mi east of Kent Point, 4 miles southwest of Kent Point, 1.3 miles south of Horseshoe Point, 1.7 miles east of Bloody Point Bar Light, 0.6 mi. NW of Thomas Pt. Shoal Lt., 1.8 mi. SW of Thomas Pt. Shoal Lt., 2.0 n.mi. east of Thomas Pt. Shoal Lt., 0.5 n.mi. SE of do. Tolly Point, 1.6 miles east of Chesapeake Bay Bridge, main channel Sandy Point, 2.3 n.mi. east of do. Sandy Point, 0.8 n.mi. ESE of BALTIMORE HBR. APP. (off Sandy Point) Craighill Channel entrance, Buoy "20" do. Love Point, 2.8 miles NNE of Love Point, 2.5 miles north of Craighill Channel, NE of Mountain Pt Craighill Channel, Belvidere Shoal Craighill Angle, right outside quarter Swan Point, 2.7 n.mi. SW of
0.5 0.4 0.4 0.2 0.5 0.4 0.5 0.7 0.4 0.5 0.8 0.6 0.5 0.7 0.8 0.7 0.9 0.8 0.8 0.8 0.4
359° 355° 350° 354° 025° 055° 005° 035° 340° 007 033° 018° 355° 025° 020° 021° 025° 021° 025° 353° 325°
0.6 185° 0.4 189° 0.3 172° 0.3 180° 0.5 210° 0.4 235° 0.5 200° 0.5 190° 0.3 190° 0.5 186° 1.0 191° 0.6 196 0.7 190° 0.9 230° 0.7 199° 0.5 210° 1.2 199° 0.8 197 0.8 189° 0.7 182 0.5 147°
38° 45.37' 38° 44.98 38° 44.98 38° 45.10' 38° 47.50 38° 49.00 38° 50.30' 38° 50.37' 38° 52.50 38° 53.75' 38° 53.46' 38° 53.46' 38° 56.07' 38° 59.50 39° 00.16 39° 00.16' 39° 00.24 39° 00.24' 39° 00.78' 39° 02.42' 39° 02.42' 39° 04.7 39° 04.78' 39° 04.88 39° 05.68' 39° 07.70 39° 06.48' 39° 06.48' 39° 08.85 39° 09.75 39° 09.78' 39° 10.95 39° 10.95 39° 11.47' 39° 11.57' 39° 12.87' 39° 13.03 39° 13.60' 39° 14.78 39° 15.7' 39° 16.539° 16.47' 39° 17.75' 39° 18.70' 39° 19.9' 39° 22.23 39° 22.6 39° 23.78' 39° 26.60 39° 28.83 39° 29.30 39° 31.75 39° 33.13
76° 25.77' 76° 26.73' 76' 26.73' 76° 29.93' 76° 26.00 76° 21.85' 76° 27.20 76° 24.17 76° 27.70 76° 23.21' 76° 25.62 76° 25.62' 76° 25.02' 76° 23.10' 76° 20.93' 76° 20.93 76° 22.80 76' 22.80' 76° 22.10' 76° 22.67' 76° 22.67 76° 16.3 76° 18.73 76° 23.67' 76° 2 58'76° 23.27' 76° 18.32 76° 18.32 76° 19.48 76° 18.28 76° 23.38' 76° 16.87'76° 16.87' 76° 15.9576° 17.27'. 76° 23.72 76° 14.90' 76° 19.88 76° 17.80 76° 16.4' 76° 19.9' 76° 13.57 76° 16.10' 76° 13.03 76° 12.00 76° 07.80 76° 06.9 76° 03 02' 76° 02.03' 76° 04.9075° 59.85' 75° 59.08 76° 05.08
-0 44 -1 26 -0 57 -049 - 108 -1 22 -0 59 -108 +0 58 +1 21 +2 01 +1 13 -1 20 -1 24 -1 45 -1 39 -103 -104 -1 11 -1 05 3 27 3 38 3 53 347 -0 52 0 39 -0 49 -1 10 -O 08 0 23 +0 02 -0 05 -2 24 -2 27 -1.43 -2 17 -1 05 --014 -022 -020 -0 25 0 09 -0 43 -0 41 -0 54 -1 18 -1 25 1 20 -003 -0 19 -O 32 -0 24 +0 16 +0 08 -0 17 +0 13 +0 19 +0 15 +0 13 +0 29 -1 33 -1 14 -0 48 -0 39 -O 11 +0 24 -O 15 +0 05 -059 -1 10 -0 59 -1 02 Daily predictions -004 +0 26 +0 01 +0 09 0 00 +0 01 -006 +0 18 Current weak and variable -O 48 +0 19 +0 27 -007 +0 28 +0 40 +0 25 +0 34 +0 10 +0 46 +0 33 +0 19 +0 12 +0 27 +0 34 +0 23 +0 18 +0 42 +0 38 +0 25 -0 27 +0 30 +1 17 +0 25 +0 18 +0 50 +1 05 +1 06 +0 53 +0 44 +0 38 +0 57 +0 16 -002 -0 14 -005 +0 44 +0 20 +0 48 +0 54 -009 +0 02 +0 38 -048 +1 43 +1 10 +0 59 +1 23 +0 51 +1 08 +0 59 +0 50 +1 25 +1 00 +0 53 +1 06 +0 49 +1 20 +1 22 +1 24 +0 59 +0 48 +0 56 +1 12 +1 01 +0 58 +1 03 +1 29 +1 29 +1 24 +1 12 +1 20 +0 11 + 15 +0 37 +O 25 +1 28 +1 34 +1 45 +1 03 -003 -0 14 +0 37 -0 13 +2 04 +1 45 +1 27 +1 36 +1 43 +1 43 +1 38 +1 32 +2 30 +1 48 +1 19 +1 33 +1 28 +1 24 +1 20 +1 18 +2 40 +2 01 +1 31 +2 03 +2 39 +1 30 +0 58 +1 00 +1 42 +1 20 +1 49 +1 40 +2 42 +1 28 +1 14 +1 49 +1 42 +1 28 +1 57 +1 47 Current weak and variable
140 170 250 150 15d 7 150
0.8 0.8 0.7 0.6 0.6 0.6 0.8 0.8 0.5 1.1 0.9 0.9 0.7 0.4 1.2 0.6 0.7 0.9 0.6 1.1 1.4 1.0 1.4 1.0 1.1 0.6 0.6 0.8 0.6 0.9
0.5 0.9 0.6 0.6 0.5 0.4 0.7 0.9 0.4 1.1 0.7 0.8 0.8 0.5 1.1 0.8 0.7 1.2 0.3 1.1 1.0 1.1 1.5 1.3 1.1 1.0 0.8 0.6 0.7 0.6
0.6 055° 0.6 350° 0.6 360° 0.5 345° 0.5 006° 0.4 342° 0.7 008° 0.6 020° 0.4 013° 0.9 030° 0.7 025° 0.7061° 0.5 028° 0.3 035° 1.0 015° 0.5 025° 0.6 038° 0.7 060° 0.5 000° 0.9 014° 1.1 025° 0.8 023° 1.1 040° 0.8 051° 0.9 080° 0.5 034° 0.5 021° 0.6 285° 0.5 009° 0.7
Swan Point, 2.15 n.mi. west of Swan Point, 1.6 miles northwest of Brewerton Channel Eastern Ext., Buoy "7" Tolchester Channel, SW of Bouy "58B" do. Tolchester Channel, south of Buoy "G17" Tolchester Channel, south of Buoy "38B" North Point, 2.5 miles northeast of Tolchester Beach, 0.33 n.mi. west of Pooles Island, 4 miles southwest of Pooles Island 2.0 n.mi. SSW of Pooles Island, 0.8 mile south of Miller Island, 1.5 miles ENE of Pooles Island, 1.6 n.mi. east of Robins Point, 0.7 mile ESE of Worton Point, 1.5 n.mi. WSW of Worton Point, 1.1 miles northwest of Howell Point, 0.8 n.mi. west of Howell Point, 0.4 mile NNW of Grove Point, 0.7 n.mi.NW of Turkey Point, 1.2 n.mi. SW of Spesutie Island, channel north of Rocky Pt. (Elk Neck), 0.25 n.mi. SW of Red Point, 0.2 mile W of, Northeast River Havre de Grace, Susquehanna River
0.4 240° 231° 0.6 208° 0.4 225° 0.8 201° 0.6 210° 0.6 238° 1.0 255° 0.2 185° 0.8 208° 0.8 210° 0.9 211° 1.2 245° 1.0 235° 0.9 245° 0.8 211° 0.6 193° 0.5 100° 0.6 196° 0.5
4956 4961 4966 4971 4976 4981 4986 4991 4996 5001 5006 5011 5016 5021 5026 5031 5036 5041 5046 5051
Endnotes can be found at the end of table 2. Page 11
5081 5086 5091 5096 5101 5106 5111 5116 5121 5126
Thimble Shoal Channel (west end) 0.9 mile northeast of 0.4 mile northeast of 0.7 mile southwest of 0.2 mile northwest of midchannel <33> 0.55 n.mi. east of 0.4 mile east of 0.2 mile south of 0.9 mile southwest of Willoughby Spit, 0.8 mile northwest of Willoughby Spit, 0.7 mile north of Willoughby Bay entrance Sewells Point, channel west of Norfolk Harbor Reach (Buoy R "8") do. Sewells Point, pierhead Newport News Channel, middle Channel, west end Middle Ground, 1 mile south of
36° 59.3' 37° 00.12' 37° 00.2 36° 59.77 36° 59.33' 36° 58.6' 36° 58.8' 36° 57.7' 36° 57.5' 36° 57.00 36° 57.00 36° 56.8'
76° 19.3' 76° 17.72' 76° 18.0' 76° 18.88' 76° 19.57' 76° 18.4' 76° 17.3' 76° 17.9' 76° 20.4'. 76° 20.37' 76° 20.37' 76° 20.1'.
-0 37 -302 -1 37 -0 37 -053 -1 32 -2 20 -2 12 0 41 0 18 -0 33 -0 52
-O 12 -0 32 -107 -0 25 -0 14 -1 30 -1 10 -1 55 -0 47 -042 -1 00 -0 40
-005 +0 17 -0 46 -0 53 -001 -141 -103 -2 21 -1 23 -1 36 -0 22 -101
-0 38 -2 11 -141 -1 25 -1 11 -154 -2 34 -2 19 -1 11 -0 16 +1 04 -104
2.1 2.1 0.9 1.2 0.4 1.1 0.8 0.6 0.7
1.2 0.5 1.0 1.1 1.2 0.8 0.6 0.3 1.0 0.7 0.3 0.6
1.5 260° 1.4 251° 1.3 235° 1.7 240° 1.7 240° 0.7 260° 1.0 285° 0.3 135° 0.9 195° 0.6 183° 0.5 152° 0.6 195°
1.5 055° 0.6 060° 1.2 045° 1.4 075° 1.5 050° 1.0 040° 0.8 080° 0.4 330° 1.2 000° 0.9 011° 0.3 000° 0.8 010°
5151 5156 5161 5166 5171 5176 5181 5186 5191
Craney Island Lamberts Point West Norfolk Bridge, Western Branch Seaboard Coast Line RR, Pinner Point Berkley Bridge, Eastern Branch Norfolk and Western RR. Bridge, E Branch Berkley, Southern Branch Chesapeake, Southern Branch Gilmerton Hwy. bridge, Southern Branch NANSEMOND RIVER
36° 53.68' 36° 52.50 36° 51.5' 36° 51.6' 36° 50.5' 36° 50.2' 36° 50.0' 36° 48.5' 36° 46.5'
76° 20.15' 76° 19.95 76° 20.6' 76° 19.0' 76° 17.0' 76° 14.7' 76° 17.8' 76° 17.4' 76° 17.7
-1 17 -2 03 -201 -2 08 -2 25 -1 32 -2 23 - 158 -2 08
-1 15 -1 21 -1 40 -1 35 -1 31 -1 15 -1 17 -1 16 -1 19
-1 53 -154 -206 -131 -1 36 -141 -1 28 -1 30 -143
-1 48 -1 50 -204 -209 - 2 49 -1 39 -2 27 -1 53 -203
0.7 0.6 0.6 0.3 0.3 0.5 0.4 0.5 0.6
0.6 0.7 0.5 0.4 0.5 0.4 0.9 0.7
177° 0.5 143° 0.6 260° 0.4 140° 0.3 120° 0.4 100° 0.3 215° 0.7 180° 0.6 180°
0.9 0.7 07 0.4 0.4 0.6 0.3 0.6 0.7
001° 328° 080° 290° 295° 280° 330° 360° 360°
Endnotes can be found at the end of table 2.
37° 07.38' 37° 07.38' 37° 12.0' 37° 13.55' 37° 14.80 37° 14.80' 37° 14.80' 37° 14.28' 37° 14.28'
76° 09.20' 76° 09.20 76° 16.0' 76° 18.47' 76° 23.28 76° 23.28' 76° 23.28 76° 24.13' 76° 24.13'
+0 50 -0 45 -0 37 -147 +1 32 +0 32 -2 51 0 16 -1 15
+1 22 +0 58 +0 06 -006 +2 05 +1 03 -1 32 +0 09 -0 36
+1 32 +1 04 + 24 +0 43 +1 58 +1 55 -0 31 +0 10 -006
+1 00 -008 -0 13 -0 19 +1 25 +1 02 -141 0 25 -1 34
1.3 0.6 1.0 0.8 1.2 1.1 0.6 1.0 0.8
0.8 0.3 0.6 0.4 0.7 0.5 0.2 0.5 0.5
1.0 342° 0.5 329° 0.8 323° 0.7 298° 1.0 265° 0.9 247° 0.5 249° 0.8 249° 0.6 262°
1.0 0.4 0.8 0.5 0.9 0.6 0.3 0.7 0.6
162° 174° 145° 128° 078° 070° 068° 069° 064°
York River Ent. Channel (SE end) <34> do. York Spit Light, 0.8 mile southwest of York River Ent. Channel (NW end) Tue Marshes Light, 0.7 n.mi. north of do. do. Tue Marshes Light, 0.9 n.mi. WNW of do. Midchannel North edge of channel South edge of channel Yorktown Gloucester Point, 150 yds. southeast of Gloucester Point, 0.4 mile southwest of Pages Rock, 1 mile SSE of Blundering Point, 0.9 mile SSW of Clay Bank Pier, 100 yds. southwest of Allmondsville Purtan Island, 0.2 mile southwest of Goff Point, 0.8 mile SSW of West Point, 0.8 mile below Lord Delaware Bridge, 100 yds. S of Wakema, Mattaponi River Walkerton, Mattaponi River Eltham Bridge, 100 yds. north of Lester Manor, Pamunkey River Northbury, Pamunkey River MOBJACK BAY and PIANKATANK RIVER
5336 5341 5346 5351 5356 5361 5366 5371 5376 5381 5386 5391 5396 5401 5406 5411 5416 5421 5426
37° 14.0 37° 14.2' 37° 13.6' 37° 14.5 37° 14.55' 37° 14.42' 37° 17.6' 37° 18.13' 37° 20.78' 37° 24' 37° 24.88 37° 29.97' 37° 30.9' 37° 32.22' 37° 39.2' 37° 43.4' 37° 32.10 37° 34.9 37° 37.5'
76° 26.6' 76° 26.6' 76° 26.5' 76° 30.5' 76° 30.10' 76° 30.65' 76° 34.8 76° 35.08 76° 36.80' 76° 40' 76° 41.22 76° 47.03 76° 47.5' 76° 47.45' 76° 54.0' 77° 01.5 76° 48.42 76° 59.4'. 77° 07.3
-0 13 0 48 -0 26 0 30 0 35 0 25 -O 10 0 22 002 +0 48 +0 49 +1 37 +1 23 +1 37 +2 08 +3 29 +2 06 +3 18 +4 33
+0 22 -0 17 -0 10 0 28 -001 0 00 +0 24 +0 13 +0 14 +0 44 +1 05 +1 36 +1 20 +1 30 +2 05 +3 04 +2 33 +3 30 +4 50
+0 18 -0 36 -022 -0 19 -0 27 +0 16 +0 13 +0 37 +1 17 +0 39 +0 58 +1 54 +1 14 +1 48 +1 59 +2 50 +2 17 +3 19 +4 24
-023 -101 -024 --O 17 1 21 -0.44 -0 22 -0 16 0 05 +0 20 +0 53 +1 54 +1 06 +1 46 +141 +3 25 +2 14 +3 06 +4 26
0.7 0.6 0.5 1.5 1.1 1.4 1.2 1.3 1.4 1.5 1.6 1.1 1.4 1.0 1.7 1.1 0.7 1.5 0.6
0.5 0.6 0.4 1.3 0.9 0.8 0.8 0.8 0.9 0.9 0.8 0.8 1.2 0.4 1.4 0.7 0.8 0.8 1.0
0.6 258° 0.5 251° 0.4 257° 1.2 302° 0.9 267° 1.1 294° 303° 1.1 293° 1.1 311° 1.2 310° 1.3 310° 0.9 320° 1.1 340° 0.8 350° 1.4 260° 0.9 275° 0.6 327° 1.2 235° 0.5 290°
0.6 072° 0.7 074° 0.5 095° 1.6 124° 1.1 090° 1.0 108° 1.0 125° 1.1 138° 1.1 123° 1.1 105° 1.1 104° 1.0 123° 1.5 150° 0.5 210° 1.7 280° 0.9 095° 0.9 124° 1.0 055° 1.3 100°
13d 150 340 140 470 150 43d
37° 58.12 37° 59.87 37° 59.87' 38° 00.80' 38° 00.80 38° 01.25 38° 01.25
76° 23.50 76° 21.75 76' 21.75' 76° 20.62' 76° 20.62 76° 19.45 76° 19.45
+2 39 +339 +2 49 +3 06 +2 13 +2 30 +2 05
+2 16 +4 02 +2 59 +3 40 +3 10 +3 27 +3 10
+2 18 +4 00 +3 30 +4 28 +3 56 +3 54 +4 38
+1 23 +3 26 +2 47 +3 38 +3 20 +255 +3 11
0.1 0.4 0.3 0.6 0.4 0.9 0.7
0.1 0.3 0.2 0.3 0.1 0.4 0.2
0.1 294° 0.3 295° 0.2 303° 0.5 297° 0.3 309° 0.7 270° 0.6 271°
0.1 113° 0.4 116° 0.2 126° 0.4 122° 0.1 102° 0.5 117° 0.3 086°
38° 02' 38° 01.1' 37° 59.4' 38° 07.8 38° 02.1'
76° 21' 76° 21.3' 76° 21.5 76° 26.9' 76° 31.2
Current irregular +4 38 +4 55 +4 29 +4 31 +4 23 +4 40 +4 14 +4 16 Current weak and variable Current weak and variable
Point Lookout, 5.2 n.mi. SW of Point Lookout, 3.1 n.mi. SW of do. Point Lookout, 1.8 n.mi. SW of do. Point Lookout, 1.0 n.mi. south of . do. 1 mile south of midchannel 3.8 miles south of Fort Point, St. Marys River Yeocomico River entrance Piney Point 0.2 mile south of midchannel 2.2 miles south of Lower Machodoc Creek entrance White Point, Nomini Creek entrance Breton Bay entrance ... St. Clements Bay entrance St. Clements I., 1.8 miles southeast of St. Clements I., 1.1 miles southwest of Rock Point, Wicomico River entrance
Page 12
16 26 6 16 26 6 16 26 6 6
Reaves Point, 0.3 mile east of do. do. Reaves Point Channel do. do. Reaves Point, 0.8 mile northeast of do. do. Reaves Point, 0.4 mile north of do. do. Snows Cut, Intracoastal Waterway Myrtle Sound, Intracoastal Waterway Upper Midnight channel Doctor Point, 0.6 mile NNW of do. do. Campbell Island, east side do. do. Dram Tree Point, 0.5 mile SSE of Brunswick River 0.4 mil orth ofdo. 1.8 miles north of mouth Wilmington do. Point Peter Turning Basin, Northeast River do.
33° 59.92 33° 59.92 33° 59.92 33° 59.08 33° 59.08 33° 59.08 34° 00.43 34° 00.43 34° 00.43 34° 00.37 34° 00.37' 34° 00.37' 34° 03.38 34° 04.68 34° 01.72' 34° 04.72 34° 04.72 34° 04.72 34° 07.22 34° 07.22 34° 07.22 34° 11.53
77° 56.97' 77° 56.97 77° 56.97 77° 55.85 77° 55.85 77° 55.85 77° 56.47 77° 56.47 77° 56.47' 77° 57.1577° 57.15' 77° 57.15' 77° 53.93 77° 53.40' 77° 56.43 77° 55.95 77° 55.95 77° 55.95 77° 56.1877° 56.18 77° 56.1877° 57.45
+0 36 +0 51 +0 18 +1 54 +1 31 +1 17 +1 54 +1 41 +1 36 +2 08 +1 48 +0 52 +5 54 +6 11 +1 33 +2 09 +1 57 +1 39 +2 23 +1 55 +1 48 +2 53
-0 31 +1 07 +1 10 +0 57 +0 34 +1 32 +1 13 +1 08 +0 59 +1 12 +2 14 +1 30 +4 39 +5 24 +0 58 +1 36 +1 29 +1 45 +1 59 +141 +2 00 +3 01
+1 05 +1 42 +2 47 +1 44 +1 38 +1 44 +1 42 +1 56 +2 04 +147 +2 00 +2 19 +7 01 +7 01 +1 50 +1 49 +2 02 +2 07 +2 05 +2 16 +2 21 +2 25
-101 +0 01 +1 25 +2 05 +2 07 +1 40 +2 13 +2 16 +1 58 +2 07 +1 55 +1 14 +5 19 +5 33 +1 20 +2 19 +2 10 +2 10 +2 27 +2 20 +2 22 +3 19
0.2 0.4 0.5 0.7 0.8 0.6 0.7 0.7 0.6 0.4 0.5 0.5 0.6 0.6 0.9 0.8 0.8 0.8 0.8 0.7 0.6 0.7
0.3 0.7 1.0 1.3 1.5 1.1 1.4 1.4 1.2 0.8 0.9 0.9 1.2 1.2 1.7
351° 332° 331° 009° 013° 017° 020° 021° 017° 027° 011° 050° 080° 017° 028° 015° 006 327° 020° 003° 004° 006°
0.3 181° 0.4 159° 0.2 160° 1.6 195° 1.7 192° 1.1 194° 1.5 197° 1.4 196° 1.0 167° 0.9 198° 0.7 0.8 183° 1.0 264° 1.1 195° 2.0 174° 2.0 192° 1.6 177° 1.4 177° 1.4 193° 1.4 182° 1.0 185° 1.3 181°
0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0
34° 10.87'
78° 57.95' 78° 57.95 77° 58.47 77° 57.17 77° 57.17 77° 57.50 77° 57.23 77° 57.23
+2 39 +2 31 +2 45 +3 19 +3 07 +4 42 +3 35 +3 30
+1 06 +1 18 +2 00 +3 33 +3 00 +4 45 +3 39 +3 44
+1 54 +1 56 +2 02 +2 51 +2 40 +4 13 +3 14 +3 16
+1 10 +1 10 +2 40 +2 55 +3 25 +4 55 +3 40 +3 40
0.4 0.4 0.3 0.7 0.7 0.3 0.3 0.4
1.2 118° 1.0 127° 0.8 170° 1.4 153 1.4 164° 0.7 124° 0.7 207° 0.7 200°
6531 6536 6541 6546 6551 6556 6561 6566 6571 6576 6581 6586 6591 6596 6601 6606 6611 6616 6621 6626 6631 6636 6641 6646 6651
32° 43.05' 32° 44.00' 32° 43.87' 32° 45.45' 32° 45.52 32° 45.48' 32° 45.72 32° 46.02 32° 45.98' 32° 46.58' 32° 46.95' 32° 47.55' 32° 48.32 32° 45.95 32° 46.05 32° 46.87' 32° 46.18 32° 46.63' 32° 46.73' 32° 47.17 32° 47.62 32° 47.67' 32° 48.27 32° 48.62' 32° 48.88
79° 48.00 79° 50.00' 79° 51.02 79° 52.08 79° 53.08' 79° 54.38' 79° 52.05' 79° 54.70' 79° 55.17 79° 55.25' 79° 55.20 79° 55.47' 79° 55.90' 79° 52.70' 79° 52.32 79° 52.58 79° 54.07' 79° 53.82 79° 54.53 79° 54.90' 79° 55.00' 79° 55.25 79° 54.92 79° 54.85' 79° 55.12'
+0 10 +0 37 -0 16 +007 +0 48 +0 20 +0 13 +0 01 +0 33 -0 03 -005 1 12 -1 42 -042 +0 05 +0 03 -0 08 +0 01 -003 -0 19 +0 12
-1 22 -1 06 -0 30 +0 08 -003 +0 09 Daily predictions -0 23 -009 +0 24 +0 19 +0 03 +004 +0 26 +0 17 +0 46 +0 27 +0 25 +0 23 +0 03 +0 30 -0 10 +0 05 +0 20 +0 06 +0 13 +0 30 +0 40 +0 09 -0 31 -0 26 -0 37 -001 -0 36 +0 150 23 -0 15 -0 11 -009 -009 +0 16 +0 19 +0 14 +0 08 +0 18 +0 09 +0 35 +0 37 +0 32
North Jetty, 0.8 mile southeast of <3> Charleston Hbr. ent. (between jetties) South Jetty, break in CHARLESTON HARBOR (off Fort Sumter) South Chan., 0.8 mi. ENE of Ft. Johnson South Chan., 0.4 mi. NW of Ft. Johnson Sullivans I., 0.7 mi. NE of Ft. Sumter Castle Pinckney, 0.4 mile south of Castle Pinckney, 0.6 mile southwest of Shutes Folly Island, 0.4 mile west of Customhouse Reach Town Creek Lower Reach Town Creek, 0.2 mile above bridge Rebellion Reach, 0.8 mi. N of Ft. Sumter The Cove, entrance on the Cove Range Hog Island Channel Folly I. Channel, N of Ft. Johnson Rebellion Rch.- Folly Reach, intersection Shutes Reach Horse Reach Hog Island Reach, east side Drum Island, 0.4 mile SSE of Drum Island, east of (bridge) Hog Island Reach, north end Drum Island Reach Cooper River Drum Island, 0.2 mile above Shipyard Creek entrance <37> Daniel Island Reach Daniel Island Bend Daniel Island Bend, west side of <55> North Charleston Filbin Creek Reach Filbin Creek Reach, 0.2 mile east of Ordnance Reach Yellow House Creek Yellow House Landing, 1 mile NW of Woods Point Snow Point, 0.5 mile north of Back River entrance Moreland, 0.6 mile SSW of The Tee, 0.4 mile southwest of Childsbury, S.A.L. RR. bridge East Branch, 0.2 mile above entrance Bonneau Ferry, east of Remley Point, 0.2 mile northwest of Hobcaw Creek, 0.5 mile NNW of Rathall Creek entrance
+0 01 +0 31 -0 15 +0 46 +0 28 -004 +0 03 -005 -009 +0 03 -0 02 -0 32 -1 11 0 31 -O 12 -003 -004 0 14 -0 06 -003 +0 47
0.4 0.4 0.7 0.4 0.4 0.4 0.5 0.6 0.4 0.7 0.6 0.4 0.6 0.8 0.5 0.7 0.7 0.7 0.6 0.7 0.3
0.6 0.7 0.6 1.0 0.8 1.0 1.1 0.6 0.4 0.4 0.5 0.7 0.9 0.8 0.8 0.8 0.9 0.7 0.7
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.4 295° 1.8 320° 1.2 002° 1.9 335° 0.8 275° 0.7 282° 1.4 342° 0.8 304° 0.7 318° 0.8 028° 1.0 005° 1.1 335° 0.8 002 1.4 321° 1.2 346° 0.8 325° 1.2 301° 1.6 310° 1.0 316° 1.4 350° 1.4 010° 1.3 1.2 020° 1.3 014° 0.6 322°
0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
1.1 110° 1.8 121° 2.8 2049 2.3 120° 2.6 115° 1.9 104° 1.5 132° 1.7 098° 1.3 156° 2.2 164° 1.8 153° 2.2 172° 2.5 166° 1.5 106° 0.9 151° 0.8 125° 1.1 104° 1.7 116° 2.1 108° 1.9 146° 1.8 180° 1.8 155° 2.0 183° 1.7 189° 1.7 144°
Endnotes can be found at the end of table 2.
0.8 1.6 0.3 0.3 0.4 0.4 0.2 1.0 0.5 0.4 0.7
6851 6856 6861 6866 6871 6876 6881 6886 6891 6896 6901 6906 6911 6916 6921 6926 6931 6936 6941 6946 6951 6956 6961 6966 6971 6976 6981 6986 6991
Folly Island, 3.5 miles east of Folly Island, 2.0 miles east of Deveaux Banks, off North Edisto River entrance North Edisto River entrance Wadmalaw Island, Wadmalaw River entrance Goshen Point, SE of, Wadmalaw River Goshen Point, south of, Wadmalaw River White Point, south of, Dawho River Whooping Island, Dawho River South Edisto River entrance Pine Island, South Edisto River Fenwick Island Cut, South Edisto River Sampson Island, S end, South Edisto River Sampson Island, NE end, South Edisto River Jehossee Island, S tip, South Edisto River Smuggedy Swamp, South Edisto River Hutchinson Island, Ashepoo River Ashepoo Coosaw Cutoff Pelican Bank, St. Helena Sound Ashepoo River, off Jefford Creek entrance Egg Bank, St. Helena Sound Morgan Island, NE of, Coosaw River Ashe Island Cut, SW of, Coosaw River Ashe Island Cut, St. Helena Sound Combahee River Combahee River Parrot Creek, Coosaw Island Morgan Island, North end, Coosaw River Williman Creek
0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1
32° 38.4' 32° 39.4'. 32° 32.7' 32' 33.7' 32° 39.9' 32° 42.6' 32° 42.8 37° 37.5' 32° 38.2 32° 29.3' 32° 30.4' 32° 32.1' 32° 33.8 32° 37.0 32° 36.2 32° 39.6' 32° 31.9' 32° 31.5 32° 27.3' 32° 30.4' 32° 26.1' 32° 29.3 32° 30.6' 32° 31.2 32' 31.6 32° 33.0 32° 28.4' 32° 30.2'32' 33.7'
79° 50.5' 79° 52.1' 80° 09.4' 80° 11.2 80° 14.1' 80° 10.3 80° 11.2 80° 16.99 80° 20.4' 80° 20.9 80° 21.7 80° 24.8 80° 23.5' 80° 23.2 80° 25.2' 80° 24.7' 80° 26.1' 80° 27.280° 25.7'. 80° 24.6' 80° 26.6 80° 28.4 80° 30.3 80° 29.3 80° 32.2 80° 33.8 80° 32.7 80° 32.2 80° 35.5
See table 5. See table 5. -0 35 -001 +0 36 +1 14 -0 23 +0 09 +1 44 +1 50 +1 29 +1 38 -0 32 +0 32 +0 02 +1 38 -0 48 -006 -0 43 +0 15 -1 29 -317 0 00 +1 02 +0 41 +1 05 +0 14 +0 56 +0 40 +1 04 +0 40 +0 57 +0 02 +0 59 -107 +0 20 +0 12 +1 03 -1 58 -003 -007 +0 39 -0 43 +0 46 +1 07 +1 04 +0 25 +1 07 +1 01 +1 36 -1 22 +0 27 +0 07 +0 30 +0 53 +1 05
-049 +0 23 -1 35 +0 18 +0 51 -002 +1 03 0 14 0 33 -3 16 +0 26 +1 02 +1 11 +1 53 +0 48 +0 49 -- 0 28 +0 31 -0 45 -005 001 -002 +0 22 +1 03 -021 +0 01 +0 07
-0 38 +0 31 -141 +1 36 +1 41 +0 03 +1 25 +0 12 +0 25 -1 38 +0 40 +0 40 -007 +2 13 +0 44 +1 00 -0 47 +0 31 -0 32 +0 07 +0 19 -0 25 +0 41 +0 51 - 1 06 0 42 -008
0.7 1.5 0.6 0.4 0.3 0.4 0.4 1.0 0.6 0.4 0.8 0.7 0.6 0.4 0.6 0.4 0.8 0.8 0.7 0.7 0.5 0.4 0.6 0.7 0.7 0.8 0.6
1.4 306° 2.9 332° 1.1 355° 0.8 059° 0.6 048° 0.8 234° 0.8 246° 1.8 350° 1.2 345° 0.8 220° 1.4 037° 1.4 334° 1.2 275° 0.8 349° 1.1 278° 0.8 065° 1.5 300° 1.5 016° 1.3 329° 1.4 303° 1.0325° 0.8 232° 1.0 335° 1.3 280° 1.2 355° 1.4 271° 1.1 343°
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
2.0 126° 3.7 142° 0.7 165° 0.7 249° 1.0 235° 0.8 044° 0.6 070° 2.2 146° 1.0 163° 0.8 023° 1.5 244° 1.5 156° 1.4 069° 1.4 166° 1.3 068° 1.2 265° 1.6 118° 1.6 197° 1.5 128° 1.8 125° 1.2 134° 0.8 034° 1.5 147° 2.0 073° 1.1 175° 1.7 085° 1.6 160°
0.6 0.6 0.6 0.5 0.7 0.7 0.6 0.8 0.5 0.3 0.6 0.9 0.5 0.8 0.7
0.0 0.0 0.0 0.0 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Page 13
7021 7026 7031 7036 7041 7046 7051 7056 7061 7066 7071 7076 7081 7086 7091 7096 7101 7106 7111 7116 7121
Southeast Channel entrance Port Royal Plantation Tower, east of Bay Point Island, S of, Broad River entrance Broad River Entrance, Point Royal Sound Hilton Head Beaufort River Entrance Parris Island, Beaufort River Chowan Creek Parris Island, Beaufort River Beaufort River Beaufort, Beaufort River Beaufort Airport, Beaufort River Brickyard Creek Skull Creek, north entrance Daws Island, SE of, Broad River Parris Island Lookout Tower, Broad River Daws Island, south of, Chechessee River Lemon Island South, Chechessee River Broad River Bridge, Sof, Broad River Byrd Creek Entrance, SE of, Broad River Little Barnwell I., E of, Whale Branch River
32° 08' 32° 13.4' 32° 14.0' 32° 13.9' 32° 15' 32° 17.3' 32° 19.6' 32° 22.2' 32° 21.6 32° 24.2' 32° 25.8 32° 27.0' 32° 28.4' 32° 15.8 32° 18.1' 32° 18.7' 32° 17.2 32° 21.0' 32° 22.9' 32° 27.4' 32° 30.1'
80° 35' 80° 39.4' 80° 37.8 80° 38.4' 80° 40' 80° 39.1' 80° 39.4' 80° 38.3 80° 40.5' 80° 40.3 80° 40.6' 80° 39.8' 80° 41.5' 80° 44.5' 80° 43.5' 80° 42.4' 80° 44.6' 80° 48.4'. 80° 46.6 80° 49.1 80° 47.2'
-1 03 000 +0 06 +0 03 -O 17 0 14 004 -009 +0 23 +0 31 +0 22 +0 52 +1 15 -2 23 +0 13 +0 06 -002 0 00 +0 19 +0 54 +1 08
-1 12 0 50 -143 -0 13 +0 15 +0 37 +0 38 +1 19 +0 45 +0 45 +0 44 +1 05 -004 -1 54 -0 29 -0.41 -0 56 +0 45 -049 +0 17 +2 29
-006 +0 12 +0 09 +0 35 +0 35 +0 23 +0 14 +0 26 +0 54 +1 04 +1 11 +1 24 +253 -1 55 +0 42 +0 32 +0 37 +0 41 +0 52 +1 35 +1 57
-O 24 +0 04 +0 34 -0 37 0 11 0 15 0 12 -0 46 +0 10 +0 21 +0 05 +0 56 +2 46 -2 26 +0 19 +0 04 +0 19 -0 14 -005 +0 40 +0 28
0.7 0.8 0.6 0.9 1.0 0.7 0.6 0.5 0.6 0.4 0.6 0.5 0.4 0.4 0.7 0.6 0.5 0.5 0.6 0.5 0.5
0.7 0.8 0.8 0.7 0.8 0.6 0.6 0.5 0.6 0.4 0.5 0.4 0.4 0.5 0.7 0.6 0.6 0.6 0.6 0.4 0.4
0.0 0.0 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0
1.3 310° 1.5 347° 1.2 320° 1.7 324° 1.8 324° 1 1.3 010° 1.2 356° 0.9 039° 1.2 341° 0.9 012° 1.1 073° 0.9 333° 0.8 351° 0.7 222° 1.4 330° 1.1 339° 1.0 317° 0.9 359° 1.1 341° 0.9 354° 1.0 354°
0.0 0.2 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.0 0.0
1.6 150° 1.9 147° 1.7 128° 1.7 138° 1.8 146° 1.4 195° 1.5 175° 1.1 246° 1.4 149° 1.0 200° 1.1 257° 0.9 152° 0.8 171° 1.2 035° 1.5 150° 1.4 152° 1.3 142° 1.3 175° 1.5 156° 1.0 174° 0.8 175°
Endnotes can be found at the end of table 2.
7416 7421 7426 7431 7436 7441 7446 7451
31° 51.4' 31° 51.4'. 31° 49.9' 31° 51.7'. 31° 52.2' 31° 53.9' 31° 53.8' 31° 50.57' 31° 51.4' 31° 49.78'
81° 00.5' 81° 00.5' 81°02.3' 81° 03.3 81° 03.0' 81° 05.9 81° 05.7 81° 04.05' 81° 08.6' 81°09.47'
-1 06 1 26 1 28 1 25 -1.45 1 04 1 21 -0 20 0 30 -2 28
-1 16 -1 10 -1 10 -1 35 0 29 -0 10 +0 17 +0 05 -0 11 -1 25
-0 12 -0 18 -0 33 -0 21 -0 16 +0 03 -O 15 -008 +0 14 -008
1.0 0.9 0.8 1.0 1.0 0.7 0.8 1.0
-1 14 -1 14 -1 25 -1.48 - 204 1 46 -2 16 -1 10 0 18 -1 23
0.9 0.7 0.6 0.7 0.5 0.7 0.6 0.8 0.8 0.5
0.1 0.0 0.1 0.1 0.1 0.0 0.0 0.2 0.0 0.0
1.6 316° 1.4 312° 1.3 302 1.6 285° 1.7 282° 1.1 324° 1.2 324° 1.6 254° 1.4 302 0.9 187°
0.0 0.0 0.1 0.1 0.1 0.0 0.1 0.2 0.0 0.3
2.3 1.8 1.7 1.9 1.4 1.7 1.6 2.0 2.1 1.4
123° 132° 125° 117° 116° 166° 156° 129° 127° 018°
Wassaw Island, SSW of do. Bradley Point, NNE of Raccoon Key Little Wassaw Island, SW of Vernon R., 1.2 miles S of Possum Point Little Ogeechee River Entrance, north of Raccoon Key & Egg Island Shoal, between Florida Passage, N of, Ogeechee River Florida Passage (south) ST. CATHERINES SOUND 610 Statute Mile Mark North of Big Tom Creek Entrance South of Kilkenny Creek Entrance Northwest of Newell Creek Entrance Medway River at Marsh Island St. Catherines Sound Entrance Medway River, northwest of Cedar Point N. Newport River, NE of Vandyke Creek N. Newport River, above Walburg Creek N. Newport River, NW of Johnson Creek N. Newport River, ESE of S. Newport Cut S. Newport River, below S. Newport Cut S. Newport River, above Swain River Ent SAPELO SOUND
7776 7781 7786 7791 7796 7801 7806 7811 7816 7821 7826 7831 7836 7841 7846 7851 7856 7861
St. Johns Point, 5 miles east of ST. JOHNS RIVER ENT. (between jetties) Mayport Mile Point, southeast of Pablo Creek bascule bridge <40> Sisters Creek entrance (bridge) St. Johns Bluff Drummond Point, channel south of Phoenix Park Chaseville, channel ne Quarantine Station Commodore Point, terminal channel Jacksonville, off Washington St. Jacksonville, F.E.C. RR. bridge Winter Point Mandarin Point Red Bay Point, draw bridge Tocoi to Lake George
30° 23.5' 30° 24.0' 30° 23.6 30° 22.9' 30° 19.4' 30° 23.4 30° 23.4' 30° 24.55' 30° 22.92 30° 22.6' 30° 21.42' 30° 19.05 30° 19.3 30° 19.3' 30° 18.5' 30° 09.3 29° 59.1'
81° 18.00 81° 23.0' 81° 26.0 81° 26.7' 81° 26.3 81° 27.7' 81° 29.5' 81° 36.17' 81° 37.72 81° 37.4' 81° 37.08' 81° 37.58' 81° 39.2' 81° 39.9' 81° 40.5' 810 41.1' 81°37.8'
See table 5. Daily predictions -007 +0 24 -0 08 -004 -007 +0 12 +0 30 +0 46 -0 25 -0 48 +0 27 +0 55 -345 -3 24 -2 29 -2 34 +0 13 +0 43 +0 02 +1 02 +1 31 +2 03 +2 25 +2 57 +2 17 +255 +3 01 +3 30 +2 35 +3 20 +2 35 +3 20 +2 17 +2 41 +2 49 +3 32 +2 14 +2 50 +2 54 +3 27 +1 59 +2 31 +2 39 +3 14 +1 59 +2 45 +2 44 +3 20 +1 59 +2 43 +3 49 +3 40 +3 00 +3 07 +3 02 +3 36 +2 34 +3 27 +4 59 +4 01 Current weak and variable
1.2 1.4 1.8 0.7 0.8 0.7 0.6 0.6 0.6 0.5 0.9 0.8 0.6 0.3 0.5
1.3 1.3 2.3 0.6 1.0 0.7 0.4 0.7 0.5 0.4 0.8 0.7 0.5 0.3 0.3
1.9 277° 2.2 211° 2.7 241° 3.4 180° 1.4 000° 1.6 244° 1.3 232° 1.1 192° 1.1 151° 1.1 183° 1.0 209° 1.8 281° 1.6 240° 1.1 200° 0.6 179° 0.9 115°
099 3.1 026° 2.9 073° 5.2 000° 1.4 180° 2.2 059° 1.6 060° 1.0 352° 1.6 337° 1.2 001° 1.0 062° 1.9 118° 1.7 060° 1.1 015° 0.7 013° 0.6 300°
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Bakers Haulover Cut East entrance, off north jetty East entrance, inside south jetty Midway, north side do. MIAMI HARBOR ENTRANCE do. West entrance, south side Main Channel Causeway Is., 0.2 mi. SE of <65> Lummus Is., northeast corner <66> Lummus Is., 0.18 mi. off NW corner Dodge Is., 0.1 mi. oft NW corner do. Lummus Is., southeast corner <67> Fisher Is., 0.2 mi. NW of Lummus Is., 0.15 mi. off SW corner West end, SW of Dodge Island
Endnotes can be found at the end of table 2. Page 14
8196 8201 8206 8211 8216 8221 8226 8231 8236 8241 8246 8251
+0 08 -1 08 +0 04 -009 -006 -1 02 -1 00 -1 23
27° 36.27' 27° 32.36' 27° 33.20' 27° 34.25' 27° 36.50' 27° 38.82 27° 41.55' 27° 42.50 27° 37.22' 27° 38.33' 27° 36.75' 27° 36.67'
82° 43.43' 82° 44.86' 82° 41.30' 82° 38.63' 82° 41.64' 82° 44.37' 82° 43.03' 82° 43.48' 82° 39.32' 82° 37.53' 82° 37.50' 82° 35.67'
-001 -0 23 -1 50 -1 13 -0 05 -0 51 -0 34 -0 34 -007 -006 -0 46 -1 07 -0 29 -1 07 -241 -2 12 Daily predictions +0 07 +0 23 -007 -024 -0 56 -1 06
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Mullet Key Channel entrance Passage Key Inlet (off Bean Pt.) Rattlesnake Key, 3.1 miles west of Rattlesnake Key, 1.1 miles northwest of Mullet Key Channel, marker "24" Bunces Pass (West of Bayway bridge) Pine Key (Pinellas Bayway bridge) Cats Point (bridge west of) SUNSHINE SKYWAY BRIDGE Cut A & B Channel Junction Joe Island, 1.8 miles northwest of Harbor Key, 1.3 miles west of Pinellas Point 2 miles southwest of 2.6 miles south of 0.5 mile southeast of 1.9 miles SE of 3 miles southeast of Port Manatee Channel entrance Port Manatee Channel, marker "4" Piney Point, 0.6 mile NNW of
1.1 055° 0.8 081° 0.4 065° 0.3 035° 0.9 073° 1.0 125° 0.4 100° 0.6 015° 1.3 060° 1.0 045° 0.7 070° 0.3 020°
1.1 255° 0.9 247° 0.6 250° 0.2 210° 1.0 255° 1.0 315° 0.8 280° 0.7 150° 1.1 235° 1.0 225° 0.9 245° 0.4 160°
0.9 0.3 0.8 0.8 0.8 0.4 0.5
210° 220° 180° 200° 216° 242° 215°
Lewis Island, 0.9 mile east of Camp Key, 1.9 miles northwest of Shell Point, 1.1 miles west of Cut E Channel, marker "2E" Port of St. Petersburg approach, marker "S" Snell Isle, 1.8 miles east of Ross Island, 1 mile east of, marker "4" OLD TAMPA BAY ENTRANCE (Port Tampa) Weedon I. powerplant channel, marker "10" Gandy Bridge, west channel Gandy Bridge, east channel W Howard Frankland Bridge Courtney Campbell Parkway Gadsden Pt. Cut-Cut G Channel junction Cut A Channel, marker "10", Hillsborough Bay Cut C Channel, marker "21", Hillsborough Bay Alafia River ent., 1.2 miles west of
27° 43.47' 27° 42.47' 27° 43.28' 27° 43.52' 27° 45.55' 27° 47.62 27° 50.22' 27° 51.90' 27° 51.72' 27° 52.75' 27° 52.99' 27° 55.55' 27° 58.08' 27° 47.16 27° 48.71' 27° 50.76 27° 50.97'
82° 36.58 82° 33.00' 82° 30.22' 82° 32.14' 82° 36.61' 82° 34.33' 82° 34.39' 82° 33.22' 82' 35.12' 82° 34.83' 82° 33.14' 82' 35.17' 82' 37.45' 82° 31.32' 82° 26.84' 82° 26.62' 82° 25.28
0.0 0.0 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.0 0.0 0.0
+0 04 -0 19 -1 05 -0 19 +0 11 -001 -0 43 -021 Current weak and variable -0.44 +0 07 -0 26 -0 22 Current weak and variable +0 38 +0 22 -0 49 0 00 +0 01 +0 19 +0 04 -0 22 Daily predictions +0 17 +0 37 +0 03 -0 23 +0 09 -0 26 -0 55 -0 33 +0 10 +0 20 +0 09 +0 07 +0 19 +0 50 -0 12 +0 16 +0 37 +0 26 -0 35 +0 16 Current weak and variable -1 33 +0 06 -0 54 -053 -1 14 +0 31 -0 20 -023 Current weak and variable
0.8 005° 0.7 030° 0.3 065° 0.7 044° 0.3 344° 0.3 350° 0.6 347° 1.0 025° 0.7 359° 0.9 000° 0.6 359° 0.3 285° 0.5 340° 0.2 030° 0.3 040° 0.4 007° 0.2 060°
0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0
0.8 0.7 0.3 0.7 0.3 0.4 0.5 0.9 0.4 0.8 0.5 0.2 0.6 0.2 0.2 0.2 0.2
160° 220° 235° 226° 203° 170° 175° 207° 204° 155° 179° 140° 140° 241° 213° 183° 215°
BOCA CIEGA BAY and ST. JOSEPH SOUND
on Tampa Bay Entrance, p.76
8371 8376 8381 8386 8391 8396 8401 8406 8411 8416
Pass-a-Grille Channel Bridge, 0.8 mi. south of Maximo Pt. <47> Gulfport, south of Blind Pass (north end) Treasure Island Causeway Johns Pass <46> Treasure Island, 3.5 miles southwest of The Narrows (Indian Rocks Beach Bridge) Clearwater Pass, 0.2 mi. NE of Sand Key St. Joseph Sound, off
27° 41.1'. 27° 41.6 27° 43.7'. 27° 45.4' 27° 46.2 27° 47.0 27° 45.0' 27° 52.6' 27° 57.4' 28° 05.0'
82° 44.1'. 82° 40.8' 82° 42.4' 82° 45.7' 82° 45.3' 82° 46.9' 82° 50.0' 82° 51.0' 82° 49.4' 82° 55.0'
-0 30 -0 43 -0 30 -0 17 - 1 05 -1 22 -1 05 -0 50 Current weak and variable -1 20 -1 25 -1 20 -1 12 Current weak and variable -1 30 -1 28 -1 30 -1 29 Current weak and variable -023 -0 25 -1 17 -0 54 -2 24 -2 49 -2 18 -1 50
Endnotes can be found at the end of table 2.
<2> Current speeds up to 9.0 knots have been observed in the vicinity of the Boilers. <3> Current turns westward just before the end of the flood. <4> Current tends to rotate counterclockwise, flood direction swinging from westward to southward. <5> Observations indicate that current floods about 11 hours and ebbs about 1 1/2 hours. Minimum before flood occurs about 4 1/2 hours earlier, maximum flood about 1 hour later, minimum before ebb about 1/2 hour later, and maximum ebb about 1 1/2 hours earlier than corresponding predictions at Portsmouth Harbor Entrance. Average ebb speed is less than 0.5 knot. < 6> Current is variable; current speeds are usually less than 1 knot. Currents are strong in the entrance to Menemsha Pond. < 7> In the open waters of Buzzards Bay, except in the entrance and off Penikese Island and West Island, the current is too weak and variable to be predicted. < 8> The currents in Narragansett Bay have a pronounced irregularity which is evidenced at times during the month by a long period of approximate slack water preceding the flood, and at other times by a double flood of two distinct maximums of speed separated by a period of lesser speed. These peculiarities appear to be somewhat unstable, consequently, flood currents differing from those predicted should be expected. The ebb current is fairly regular and the predictions for maximum ebb will usually agree closely with the current encountered. < 9> At minimum flood, current sometimes ebbs for a short period. <10> At minimum flood, current frequently ebbs for a short period. <11> Flood is too weak to be predicted. Time difference gives mid-point of 4 hour stand of weak and variable current and time of maximum ebb. <12> Inside breakwaters, in channel, the current is only 0.4 knot. <13> Current seldom floods. <14> Near Tongue Point, Bridgeport Harbor, the current is weak and irregular. <15> The current on the Manhattan side of the channel is about 0.5 knot stronger, and on the Brooklyn side about 0.5 knot weaker, than at this station. <16> The ebb or northerly current is weak and variable. East of the channel the current flows southward practically all the time, but with changing speed, the maximum speed being about the same as in midchannel and occurring about the same time. On the Manhattan side, just off the piers, the flood or southerly current is weak and variable but the ebb or northerly current has an average maximum speed of about 2 knots which occurs about the time of maximum ebb at Hell Gate. <17> Tidal current is weak, averaging about 0.1 knot at maximum. <18> For maximum southward current only, the gates of the lock being closed to prevent northward flow. Apply difference and ratio to maximum ebb at The Narrows. <19> Current is rotary, turning clockwise. Minimum current of 0.9 knot sets southwest about time of "Minimum before flood" at The Narrows. Minimum current of 0.5 knot sets northeast about 1 hour before "Minimum before ebb" at The Narrows. <20> The values for the Hudson River are for the summer months, when the freshwater discharge is a minimum. <21> In Roundout Creek entrance between lights, eddies on the flood make navigation difficult. Little difficulty will be experienced on the ebb. <22> Current does not flood. <23> Current is rotary, turning clockwise. It flows northwest at times of "Minimum before flood" at The Narrows; northeast 1 hour after maximum flood; southeast 1 1/2 hours after "Minimum before ebb"; and southwest 2 hours after maximum ebb. Page 15
TABLE 5.–ROTARY TIDAL CURRENTS
Offshore and in some of the wider indentations of the coast, the tidal current is quite different from that found in the more protected bays and rivers. In these inside waters the tidal current is of the reversing type. It sets in one direction for a period of about 6 hours after which it ceases to flow momentarily and then sets in the opposite direction during the following 6 hours. Offshore the current, not being confined to a definite channel, changes its direction continually and never comes to a slack, so that in a tidal cycle of about 121/2 hours it will have set in all directions of the compass. This type of current is therefore called a rotary current. A characteristic feature of the rotary current is the absence of slack water. Although the current generally varies from hour to hour, this variation from greatest current to least current and back again to greatest does not give rise to a period of slack water. When the speed of the rotary tidal current is least, it is known as the minimum current, and when it is greatest it is known as the maximum current. The minimum and maximum speeds of the rotary current are thus related to each other in the same way as slack and strength of current, a minimum speed of the current following a maximum speed by an interval of about 3 hours and being followed in turn by another maximum after a further interval of 3 hours. In the following table there are given for a number of offshore stations the direction and average speed of the rotary tidal current for each hour of the tidal cycle referred to predictions for a station in Table 1. All times are eastern standard for the 75th meridian. The speeds given in the table are average. The Moon at new, full, or perigee tends to increase the speeds 15 to 20 percer: above average. When perigee occurs at or near the time of new, or full Moon the speeds will be 30 to 40 percent above average. Quadrature and apogee tend to decrease the speeds below average by 15 to 20 percent. When apogee occurs at or near quadrature they will be 30 to 40 percent below average. The speeds will be about average when apogee occurs at or near the time of new or full Moon and also when perigee occurs at or near quadrature, (see table of astronomical data). The direction of the current is given in degrees, true, reading clockwise from 0° at north, and is the direction toward which the water is flowing. The speeds and directions are for the tidal current only and do not include the effect of winds. When a wind is blowing, a wind-driven current will be set up which will be in addition to the tidal current, and the actual current encountered will be a combination of the wind-driven current and tidal current. See the chapters on "Wind-Driven Currents" and "The Combination of Currents." As an example, in the following table the current at Nantucket Shoals is given for each hour after maximum flood at Pollock Rip Channel. Suppose it is desired to find the direction and speed of the current at Nantucket Shoals at 3:15 p.m.(15:15) eastern standard time on a day when maximum flood at Pollock Rip Channel is predicted in Table 1 to occur at 13:20 eastern standard time. The desired time is therefore about 2 hours after maximum flood at Pollock Rip Channel, and from the following table the tidal current at Nantucket Shoals at this time is setting 15° true with an average speed of 0.8 knot. If this day is near the time of new Moon and about halfway between apogee and perigee, then the distance effect of the Moon will be nil and the phase effect alone will operate to increase the speed by about 15 percent, to 0.9 knot. If a wind has been blowing, determine the direction and speed of the wind-driven current from the chapter on "Wind-Driven Currents" and combine it with the above tidal current as explained in the chapter on "The Combination of Currents." Caution.-Speeds from 11/2 to 3 knots have been observed at most of the stations in this table. Near Diamond Shoal Light a speed of 4 knots has been recorded. At some offshore stations, such as near the entrance to Chesapeake Bay, the tidal current is directed alternately toward and away from the bay entrance with intervening periods of slack water, so that it is essentially a reversing current. For such places, differences for predicting are given in Table 2. Page 16
TABLE 5.--ROTARY TIDAL CURRENTS
Fire Island Inlet, N. Y., 22 miles south of: Tidal current is weak, averaging about 0.1 knot at strength. Fire Island Lighted Whistle Buoy 2 FI: Tidal current is weak, averaging about 0.2 knot at strength. Ambrose Light, New York Harbor entrance: Tidal current is weak, averaging about 0.2 knot at strength. Cape May, N.J., 72 miles east of: Tidal current is weak, averaging about 0.1 knot at strength. Five-Fathom Bank Northeast Lighted Whistle Buoy 2FB: Tidal current is weak, averaging about 0.2 knot at strength. Winter-Quarter Shoal Lighted Whistle Buoy 6WQS, 9.2 miles SE of, off Assateague l: Tidal current is weak, averaging less than 0.1 knot. Cape Charles, 70 miles east of: Tidal current is weak, averaging about 0.2 knot at strength. Tidal current is weak and variable. Tidal current is weak, averaging about 0.2 knot at strength. Current during June-August usually sets eastward, average speed 0.5 knot. Ocracoke Inlet, 3.5 miles SSE of: Tidal current is weak, averaging about 0.1 knot at strength. Diamond Shoal Light, 3.9 miles SSW of: Tidal current is weak, averaging less than 0.1 knot at strength. Current during June-August usually sets northeastward, average speed 0.75 knot. Frying Pan Shoals Light, 14.3 miles NW of: Tidal current is weak, averaging about 0.2 knot at strength. Current during June-August usually sets eastward, average speed 0.5 knot. St. Johns Point, 5 miles east of, Fla: Tidal current is weak, averaging about 0.2 knot at strength. Fowey Rocks Light, 1.5 miles SW of: Tidal current is weak and variable. Page 17
The region where the Gulf of Mexico narrows to form the channel between Florida Keys and Cuba may be regarded as the head of the Gulf Stream. From this region the stream sets eastward and northward through the Straits of Florida, and after passing Little Bahama Bank it continues northward and then northeastward, following the general direction of the 100-fathom curve as far as Cape Hatteras. The flow in the Straits is frequently referred to as the Florida Current. Shortly after emerging from the Straits of Florida, the stream is joined by the Antilles Current, which flows northwesterly along the open ocean side of the West Indies before uniting with the water which has passed through the straits. Beyond Cape Hatteras the combined current turns more and more eastward under the combined effects of the deflecting force of the Earth's rotation and the eastwardly trending coastline, until the region of the Grand Banks of Newfoundland is reached. Eastward of the Grand Banks the whole surface is slowly driven eastward and northeastward by the prevailing westerly winds to the coastal waters of northwestern Europe. For distinction, this broad and variable wind-driven surface movement is sometimes referred to as the North Atlantic Drift or Gulf Stream Drift. In general, the Gulf Stream as it issues into the sea through the Straits of Florida may be characterized as a swift, highly saline current of blue water whose upper stratum is composed of warm water. On its western or inner side, the Gulf Stream is separated from the coastal waters by a zone of rapidly falling temperature, to which the term "cold wall" has been applied. It is most clearly marked north of Cape Hatteras but extends, more or less well defined, from the Straits to the Grand Banks. Throughout the whole stretch of 400 miles in the Straits of Florida, the stream flows with considerable speed. Abreast of Havana, the average surface speed in the axis of the stream is about 24/2 knots. As the cross-sectional area of the stream decreases, the speed increases gradually, until abreast of Cape Florida it becomes about 342 knots. From this point within the narrows of the straits, the speed along the axis gradually decreases to about 24/2 knots off Cape Hatteras, N.C. These values are for the axis of the stream where the current is a maximum, the speed of the stream decreasing gradually from the axis as the edges of the stream are approached. The speed of the stream, furthermore, is subject to fluctations brought about by variations in winds and barometric pressure. The following tables give the mean surface speed of the Gulf Stream in two cross sections in the Straits of Florida:
Crossing the Gulf Stream at Jupiter or Fowey Rocks, an average allowance of 2.5 knots in a northerly direction should be made for the current. Crossing the stream from Havana, a fair allowance for the average current between 100-fathoms curves is 1.1 knots in an east-north-easterly direction.
From within the straits, the axis of the Gulf Stream runs approximately parallel with the 100-fathom curve as far as Cape Hatteras. Since this stretch of coast line sweeps northward in a sharper curve than does the 100-fathom line, the stream lies at varying distances from the shore. The lateral boundaries of the current within the straits are fairly well fixed, but when the stream flows into the sea the eastern boundary becomes somewhat vague. On the western side, the limits can be defined approximately since the waters of the stream differ in color, temperature, salinity, and flow from the inshore coastal waters. On the east, however, the Antilles Current combines with the Gulf Stream, so that its waters here merge gradually with the waters of the open Atlantic. Observations of the National Ocean Service indicate that, in general, the average position of the inner edge of the Gulf Stream as far as Cape Hatteras lies inside the 50-fathom curve. The Gulf Stream, however, shifts somewhat with the seasons, and is considerably influenced by the winds which cause fluctuations in its position, direction, and speed; consequently, any limits which are assigned refer to mean or average positions. The approximate mean positions of the inner edge and axis (point where greatest speed may be found) are indicated in the following table
Approximate mean position of the Gulf Stream
North of Havana, Cuba. Southeast of Key West, Fla.. East of Fowey Rocks, Fla. East of Miami Beach, Fla East of Palm Beach, Fla..... East of Jupiter Inlet, Fla East of Cape Canaveral, Fla East of Daytona Beach, Fla East of Ormond Beach, Fla .... East of St. Augustine, Fla. (coast line) East of Jacksonville, Fla (coast line) Southeast of Savannah, Ga. (coast line) Southeast of Charleston, S.C. (coast line) Southeast of Myrtle Beach, S.C. Southeast of Cape Fear, N.C. (light) Southeast of Cape Lookout, N.C. (light) Southeast of Cape Hatteras, N.C. Southeast of Virginia Beach, Va.. Southeast of Atlantic City, N.J. Southeast of Sandy Hook, N.J.
10 25 25 40 55 65 55 60 35
Nautical miles 25 45 10 15 15 20 45 75 75 85 90 95 90 100 75 50 35 115
At the western end of the Straits of Florida the limits of the Gulf Stream are not well defined, and for this reason the location of the inner edge has been omitted for Havana, Cuba, and Key West, Fla., in the above table. Between Fowey Rocks and Jupiter Inlet the inner edge is deflected westward and lies very close to the shore line. Along the Florida Reefs between Alligator Reef and Dry Tortugas the distance of the northerly edge of the Gulf Stream from the edge of the reefs gradually increases toward the west. Off Alligator Reef it is quite close inshore, while off Rebecca Shoal and Dry Tortugas it is possibly 15 to 20 miles south of the 100-fathom curve. Between the reefs and the northern edge of the Gulf Stream the currents are ordinarily tidal and are subject at all times to considerable modification by local winds and barometric conditions. This neutral zone varies in both length and breadth; it may extend along the reefs a greater or lesser distance than stated, and its width varies as the northern edge of the Gulf Stream approaches or recedes from the reefs. The approximate position of the axis of the Gulf Stream for various regions is shown on the following National Ocean Service Charts: No. 11013, Straits of Florida; No. 411, South Carolina to Cuba; No. 11460, Cape Canaveral to Key West; No. 11420, Alligator Reef to Havana. Chart No. 11009 shows the axis and the position of the inner edge of the Gulf Stream from Cape Hatteras to Straits of Florida.
A wind continuing for some time will produce a current the speed of which depends on the speed of the wind, and unless the current is by some other cause, the deflective force of the Earth's rotation will cause it to set to the right of the direction of the wind in the northern hemisphere and to the left in the southern hemisphere. The current produced at off-shore locations by local winds of various strengths and directions has been investigated from observations made at 20 lightships (some of which have since been moved) from Portland, Maine to St. John's River, Fla. The observations were made hourly and varied in length from 1 to 2 years at most of the locations to 5 years at Nantucket Shoals and 9 years at Diamond Shoal. The averages obtained are given below and may prove helpful in estimating the probable current that may result from various winds at the several locations. Caution. There were of course many departures from these averages of speed and direction, for the wind-driven current often depends not only on the length of time the wind blows but also on factors other than the local wind at the time and place of the current. The mariner must not, therefore, assume that the given wind will always produce the indicated current. It should be remembered, too, that the current which a vessel experiences at any time is the resultant of the combined actions of the tidal current, the wind-driven current, and any other currents such as the Gulf Stream or currents due to river discharge. Speed.—The table below shows the average speed of the current due to winds of various strengths.
Direction.—The position of the shore line with respect to the station influences considerably the direction of the currents due to certain winds. The following table shows for each station the average number of degrees by which the wind-driven current is deflected to the right or left (-) of the wind. Thus, at Cape Lookout Shoals the table indicates that with a north wind the wind-driven current flows on the average 030° west of south, and with an east wind it flows 029° south of west.
Average deviation of current to right of wind direction
(A minus sign () indicates that the current sets to the left of the wind)
THE COMBINATION OF CURRENTS
determining from the current tables the speed and direction of the current at any time, it is frequently necessary to combine the tidal current with the wind-driven current. The following methods indicate how the resultant of two or more currents may be easily determined. Currents in the same direction. When two or more currents set in the same direction it is a simple matter to combine them. The resultant current will have a speed which is equal to the sum of all the currents and it will set in the same direction. For example, a vessel is near the Nantucket Shoals station at a time when the tidal current is setting 120° with a speed of 0.6 knot, and at the same time a wind of 40 miles per hour is blowing from the west; What current will the vessel be subject to at that time? Since a wind of 40 miles per hour from the west will give rise to a current setting 120° with a speed of 0.5 knot, the combined tidal and wind-driven currents will set in the same direction (120°) with a speed of 0.6 + 0.5 = 1.1 knots. Currents in opposite directions. The combination of currents setting in opposite directions is likewise a simple matter. The speed of the resultant current is the difference between the opposite setting currents, and the direction of the resultant current is the same as that of the greater current. As an example, let it be required to determine the speed of the current at the Nantucket Shoals station when the tidal current is setting 205° with a speed of 0.8 knot, and when a wind of 40 miles per hour is blowing from the south. The current produced by a wind of 40 miles per hour from the south would set 025° with a speed of 0.5 knot. The tidal and wind-driven currents, therefore, set in opposite directions, the tidal current being the stronger. Hence, the resultant current will set in the direction of the tidal current (205) with a speed of 0.8 -0.5 = 0.3 knot. Page 18
VINEYARD AND NANTUCKET SOUNDS EXPLANATION OF CURRENT DIAGRAM
The current diagram on the opposite page represents average conditions of the surface currents along the middle of the channel from Gay Head to the east end of Pollock Rip Channel, the scale being too small to show details. Easterly streams are designated "Flood" and westerly streams "Ebb". The small figures in the diagram denote the speed of the current in knots and tenths. The times are referred to slack waters at Pollock Rip Channel (Butler Hole), daily predictions for which are given in Table 1 of these current tables. The speed lines are directly related to the diagram. By transferring to the diagram the direction of the speed line which corresponds to the ship's speed, the diagram will show the general direction and speed of the current encountered by the vessel in passing through the sounds or the most favorable time, with respect to currents, for leaving any place shown on the left margin. To determine speed and direction of current.-With parallel rulers transfer to the diagram the direction of the speed line corresponding to normal speed of vessel, moving edge of ruler to the point where the horizontal line representing place of departure intersects the vertical line representing the time of day in question. If the ruler's edge lies within the shaded portion of the diagram, a flood current will be encountered; if within the unshaded, an ebb current; and if along the boundary of both, slack water. The figures on the diagram along the edge of the rule will show the speed of the current encountered at any place indicated on the left margin of the diagram. Example.-A 12-knot vessel bound westward enters Pollock Rip Channel at 0700 of a given day, and it is desired to ascertain the speed and direction of the current which will be encountered on its passage through the sounds. Assuming that on the given day ebb begins at Pollock Rip Channel at 0508 and flood begins at 1120, the time 0700 will be about 2 hours after ebb begins. With parallel rulers transfer to the diagram the 12-knot speed line "Westbound", placing edge of rule on the point where the vertical line "2 hours after ebb begins at Pollock Rip Channel" intersects the horizontal 47-mile line which is the starting point. It will be found that the edge of the ruler passes through the unshaded portion of the diagram, the speeds along the edge averaging about 1.4 knots. The vessel will, therefore, have a favorable ebb current averaging about 1.4 knots all the way to Gay Head. It will also be seen that the edge of the ruler crosses the horizontal 16-mile line (at East Chop) about halfway between the figures 1.6 and 2.2. Therefore, when passing the vicinity of East Chop she will have a favorable current of almost 2 knots. To determine the time of a favorable current for passing through the sounds.—With parallel rulers transfer to the diagram the direction of the speed line corresponding to normal speed of vessel, moving the ruler over the diagram until its edge runs as nearly as possible through the general line of largest speeds of shaded portion if eastbound and unshaded portion if westbound, giving consideration only to that part of the diagram which lies between place of departure and destination. An average of the figures along the edge of the ruler will give the average strength of current. The time (before or after flood begins or ebb begins at Pollock Rip Channel) for leaving any place shown on the left margin will be indicated vertically above the point where the ruler cuts a line drawn horizontally through the name of the place in question. Example.-A 12-knot vessel will leave Gay Head for Pollock Rip Channel on a day when flood begins at Pollock Rip Channel at 0454 and ebb begins at 1104. At what time should she get under way so as to carry the most favorable current all the way through the sounds? Place parallel rulers along the 12-knot speed line "Eastbound". Transfer the direction to the shaded portion of the diagram and as near as possible to the axis so as to include the greatest possible number of larger current speeds. It will be found that the edge of the ruler cuts the horizontal line at Gay Head at the point representing "3 hours after flood begins at Pollock Rip Channel", and that the average of the currents along the edge of rulers is about 0.8 knot in a favorable direction. For the given day flood begins at Pollock Rip Channel at 0454; hence, if the vessel leaves Gay Head 3 hours later, or about 0754, she will average a favorable current of almost 1 knot all the way. Page 19
NEW YORK HARBOR VIA AMBROSE CHANNEL EXPLANATION OF CURRENT DIAGRAM
The current diagram on the opposite page represents average conditions of the surface currents along the middle of the channel from Ambrose Channel entrance to Spuyten Duyvil, the scale being too small to show details. Northerly streams are designated "Flood" and southerly streams "Ebb". The small figures in the diagram denote the speed of the current in knots and tenths. The times are referred to slack waters at The Narrows, daily predictions for which are given in Table 1 of these current tables. The speed lines are directly related to the diagram. By transferring to the diagram the direction of the speed line which corresponds to the ship's speed, the diagram will show the general direction and speed of the current encountered by the vessel on entering or leaving the harbor or the most favorable time, with respect to currents, for leaving any place shown on the left margin. To determine speed and direction of current.--With parallel rulers transfer to the diagram the direction of the speed line corresponding to normal speed of vessel, moving edge of ruler to the point where the horizontal line representing place of departure intersects the vertical line representing the time of day in question. If the ruler's edge lies within the shaded portion of the diagram, a flood current will be encountered; if within the unshaded, an ebb current; and if along the boundary of both, slack water. The figures on the diagram along the edge of the ruler will show the speed of the current encountered at any place indicated on the left margin of the diagram. Example.-A 10-knot vessel enters Ambrose Channel about 1040 of a given day. Flood begins at The Narrows at 0835 and ebb begins at 1420. The time 1040 will be about 2 hours after flood begins. With parallel rulers transfer to the diagram the 10-knot speed line "Northbound," placing edge of ruler on the point where the vertical line "2 hours after flood begins" intersects the horizontal 0-mile line which is the starting point. It will be found that the edge of the ruler passes through the shaded portion of the diagram, the speeds along the edge of the ruler from Ambrose Channel entrance to Chelsea Docks averaging about 1.4 knots. The vessel will, therefore, have a favorable flood current averaging about 1.4 knots all the way to Chelsea Docks. To determine the time of a favorable current for leaving or entering the harbor.—With parallel rulers transfer to the diagram the direction of the speed line corresponding to normal speed of vessel, moving the ruler over the diagram until its edge runs as nearly as possible through the general line of largest speeds of shaded portion if northbound and unshaded portion if southbound, giving consideration only to that part of the diagram which lies between place of departure and destination. An average of the figures along the edge of the ruler will give the average strength of current. The time before or after flood or ebb begins at The Narrows) for leaving any place shown on the left margin will be indicated vertically above the point where the ruler cuts a line drawn horizontally through the name of the place in question. Example.-A 10-knot vessel will leave Chelsea Docks on a day when flood begins at The Narrows at 0804 and ebb begins at 1338. At what time should she get under way so as to carry the most favorable current all the way to Ambrose Channel entrance? Place parallel rulers along the 10-knot speed line "Southbound". Transfer the direction to the unshaded portion of the diagram as near as possible to the axis so as to include the greatest possible number of larger current speeds on the portion of the chart below Chelsea Docks. It will be found that the edge of the ruler cuts the horizontal line at Chelsea Docks at the point representing "2/2 hours after ebb begins at The Narrows", and that the average of the currents along the edge of the ruler is about 1.5 knots in a favorable direction. For the given day, ebb begins at The Narrows at 1338; hence, if the vessel leaves Chelsea Docks 22 hours later, or about 1608, she will average a favorable current of about 1.5 knots all the way to Ambrose Channel entrance. Page 20
CHESAPEAKE BAY EXPLANATION OF CURRENT DIAGRAM
This current diagram represents average conditions of the surface currents along the middle of the channel from Cape Henry Light to Baltimore, the scale being too small to show details. Northerly streams are designated "Flood" and southerly streams "Ebb". The small figures in the diagram denote the speed of the current in knots and tenths. The times are referred to slack waters at Chesapeake Bay Entrance, daily predictions for which are given in Table 1 of these current tables. The speed lines are directly related to the diagram. By transferring to the diagram the direction of the speed line which corresponds to the ship's speed, the diagram will show the general direction and speed of the current encountered by the vessel in passing up or down the bay or the most favorable time, with respect to currents, for leaving any place shown in the left margin. To determine speed and direction of current.-With parallel rulers transfer to the diagram the direction of the speed line corresponding to the normal speed of vessel, moving edge of ruler to the point where the horizontal line representing place of departure intersects the vertical line representing the time in question. If the ruler's edge lies within the shaded portion of the diagram, a flood current will be encountered; if within the unshaded, an ebb current, and if along the boundary of both, slack water. The figures in the diagram along the edge of the ruler will show the speed of the current encountered at any place indicated in the left margin of the diagram. Example.—A 12-knot vessel bound for Baltimore passes Cape Henry Light at 1430 of a given day, and it is desired to ascertain the speed and direction of the current which will be encountered. Assuming that on the given day flood begins at Chesapeake Bay entrance at 1256 and ebb begins at 1803, the time 1430 will be about 1/2 hours after flood begins. With parallel rulers transfer to the diagram the 12-knot speed line "Northbound," placing edge of ruler so that it will cross the horizontal line opposite Cape Henry at a point "112 hours after flood begins at the entrance." It will be found that the edge of the ruler passes through strength of current in the shaded portion of the diagram averaging about 0.7 knot. The vessel will, therefore, have a favorable current averaging about 0.7 knot all the way to Baltimore. To determine the time of a favorable current for passing through the bay.-With parallel rulers transfer to the diagram the direction of the speed line corresponding to normal speed of vessel, moving the ruler over the diagram until its edge runs approximately through the general line of greatest current of unshaded portion if southbound and shaded portion if northbound. An average of the figures along edge of ruler will give average strength of current. The time (before or after ebb or flood begins at the entrance) for leaving any place in the left margin of diagram will be found vertically above the point where the parallel ruler cuts the horizontal line opposite the place in question. Example.-A 12-knot vessel in Baltimore Harbor desires to leave for Cape Henry Light on the afternoon of a day when flood begins at Chesapeake Bay Entrance at 1148 and ebb begins at 1718. At what time should she get under way so as to carry the most favorable current? Place parallel rulers along the 12-knot speed line "Southbound." Transfer this direction to the diagram and move it along so as to include the greatest possible number of larger current speeds in the unshaded portion of the diagram. The most favorable time for leaving Baltimore thus found is about 1 hour after flood begins at the entrance, or about 1248. There will be an unfavorable current of about 0.2 knot as far as Seven Foot Knoll Light; after passing this light there will be an average favorable current of about 0.3 knot as far as Cove Point Light; from Cove Point Light to Bluff Point a contrary current averaging about 0.3 knot will be encountered; from Bluff Point to Tail of the Horseshoe there will be an average favorable current of about 0.9 knot; and from Tail of the Horseshoe to Cape Henry an average contrary current of about 0.2 knot will again be encountered. Page 21
DIURNAL-Having a period or cycle of approximately 1 tidal day. Thus, the tide is said to be diurnal when only one high water and one low water occur during a tidal day, and the tidal current is said to be diurnal when there is a single flood and single ebb period in the tidal day. A rotary current is diurnal if it changes its direction through all points of the compass once each tidal day.
CURRENT-Generally, a horizontal movement of water. Currents may be classified as tidal and nontidal. Tidal currents are caused by gravitational interactions between the Sun, Moon, and Earth and are a part of the same general movement of the sea that is manifested in the vertical rise and fall, called tide. Nontidal currents include the permanent currents in the general circulatory systems of the sea as well as temporary currents arising from more pronounced meteorological variability. CURRENT DIFFERENCE-Difference between the time of slack water (or minimum current) or strength of current in any locality and the time of the corresponding phase of the tidal current at a reference station, for which predictions are given in the Tidal Current Tables.
DIURNAL INEQUALITY—The difference in height of the two high waters or of the two low waters of each day; also the difference in speed between the two flood tidal currents or the two ebb tidal currents of each day. The difference changes with the declination of the Moon and to a lesser extent with the declination of the Sun. In general, the inequality tends to increase with an increasing declination, either north or south, and to diminish as the Moon approaches the Equator. Mean diurnal high water inequality (DHQ) is one-half the average difference between the two high waters of each day observed over a specific 19-year Metonic cycle (the National Tidal Datum Epoch). It is obtained by subtracting the mean of all high waters from the mean of the higher high waters. Mean diurnal low water inequality (DLQ) is one-half the average difference between the two low waters of each day observed over a specific 19-year Metonic cycle (the National Tidal Datum Epoch). It is obtained by subtracting the mean of the lower low waters from the mean of all low waters. Tropic high water inequality (HWQ) is the average difference between the two high wa
CURRENT ELLIPSE-A graphic representation of a rotary current in which the velocity of the current at different hours of the tidal cycle is represented by radius vectors and vectorial angles. A line joining the extremities of the radius vectors will form a curve roughly approximating an ellipse. The cycle is completed in one-half tidal day or in a whole tidal day according to whether the tidal current is of the semidiurnal or the diurnal type. A current of the
ters of the day at the times of the tropic tides. Tropic low water inequality (LWQ) is the average difference between the two low waters of the day at the times of the tropic tides. Mean and tropic inequalities as defined above are applicable only when the type of tide is either semidiurnal or mixed. Diurnal inequality is sometimes called declinational inequality.
normal semidiurnal tide, the duration of rise and duration of fall will each be approximately equal to 6.21 hours, but in shallow waters and in rivers there is a tendency for a decrease in the duration of rise and a corresponding increase in the duration of fall.
DOUBLE EBB—An ebb tidal current where, after ebb begins, the speed increases to a maximum called first ebb; it then decreases, reaching a minimum ebb near the middle of the ebb period (and at some places it may actually run in a flood direction for a short period); it then again ebbs to a maximum speed called second ebb after which it decreases to slack water.
EBB CURRENT—The movement of a tidal current away from shore or down a tidal river or estuary. In the mixed type of reversing tidal current, the terms greater ebb and lesser ebb are applied respectively to the ebb tidal currents of greater and lesser speed of each day. The terms maximum ebb and minimum ebb are applied to the maximum and minimum speeds of a current running continuously ebb, the speed alternately increasing and decreasing without coming to a slack or reversing. The expression maximum ebb is also applicable to any ebb current at the time of greatest speed.
DOUBLE FLOOD-A flood tidal current where, after flood begins, the speed increases to a maximum called first flood; it then decreases, reaching a minimum flood near the middle of the flood period (and at some places it may actually run in an ebb direction for a short period); it then again floods to a maximum speed called second flood after which it decreases to slack water.
EQUATORIAL TIDAL CURRENTS-Tidal currents oc curring semimonthly as a result of the Moon being over the Equator. At these times the tendency of the Moon to produce a diurnal inequality in the tidal current is at a minimum.
EQUATORIAL TIDES—Tides occurring semi monthly as the result of the Moon being over the Equator. At these times the tendency of the Moon to produce a diurnal inequality in the tide is at a minimum.
DURATION OF FLOOD AND DURATION OF EBB Duration of flood is the interval of time in which a tidal current is flooding, and the duration of ebb is the interval in which it is ebbing. Together they cover, on an average, a period of 12.42 hours for a semidiurnal tidal current or a period of 24.84 hours for a diurnal current. In a normal semidiurnal tidal current, the duration of flood and duration of ebb will each be approximately equal to 6.21 hours, but the times may be modified greatly by the presence of a nontidal flow. In a river the duration of ebb is usually longer than the duration of flood because of the freshwater discharge, especially during the spring when snow and ice melt are the predominant influences.
FLOOD CURRENT—The movement of a tidal current toward the shore or up a tidal river or estuary. In the mixed type of reversing current, the terms greater flood and lesser flood are applied respectively to the flood currents of greater and lesser speed of each day. The terms maximum flood and minimum flood are applied to the maximum and minimum speeds of a flood current, the speed of which alternately increases and decreases without coming to a slack or reversing. The expression maximum flood is also applicable to any flood current at the time of greatest speed.
GREAT DIURNAL RANGE (Gt)— The difference in height between mean higher high water and mean lower low water. The expression may also be used in its contracted form, diurnal range.
DURATION OF RISE AND DURATION OF FALL Duration of rise is the interval from low water to high water, and duration of fall is the interval from high water to low water. Together they cover, on an average, a period of 12.42 hours for a semidiurnal tide a
GULF COAST LOW WATER DATUM-A chart datum. Specifically, the tidal datum formerly designated for the coastal waters of the Gulf Coast of the United States. It was defined as mean lower low water when the type of tide was mixed and mean low water when the type of tide was diurnal.
HARMONIC ANALYSIS—The mathematical process by which the observed tide or tidal current at any place is separated into basic harmonic constituents.
periodic tidal forces or it may have superimposed upon it the effects of meteorological conditions. Use of the synonymous term, low tide, is discouraged.
HARMONIC CONSTANTS-The amplitudes and ep ochs of the harmonic constituents of the tide or tidal current at any place.
LOWER HIGH WATER (LHW)-The lower of the two high waters of any tidal day.
LOWER LOW WATER (LLW)-The lower of the two low waters of any tidal day.
LUNAR DAY—The time of the rotation of the Earth with respect to the Moon, or the interval between two successive upper transits of the Moon over the meridian of a place. The mean lunar day is approximately 24.84 solar hours long, or 1.035 times as long as the mean solar day.
HARMONIC CONSTITUENT-One of the harmonic elements in a mathematical expression for the tideproducing force and in corresponding formulas for the tide or tidal current. Each constituent represents a periodic change or variation in the relative positions of the Earth, Moon, and Sun. A single constituent is usually written in the form y=A cos (at+a), in which y is a function of time as expressed by the symbolt and is reckoned from a specific origin. The coefficient A is called the amplitude of the constituent and is a measure of its relative importance. The angle (at+a) changes uniformly and its value at any time is called the phase of the constituent. The speed of the constituent is the rate of change in its phase and is represented by the symbol a in the formula. The quantity a is the phase of the constituent at the initial instant from which the time is reckoned. The period of the constituent is the time required for the phase to change through 360° and is the cycle of the astronomical condition represented by the constituent.
LUNAR INTERVAL—The difference in time between the transit of the Moon over the meridian of Greenwich and over a local meridian. The average value of this interval expressed in hours is 0.069 L, in which L is the local longitude in degrees, positive for west longitude and negative for east longitude. The lunar interval equals the difference between the local and Greenwich interval of a tide or current phase.
HIGH WATER (HW)-The maximum height reached by a rising tide. The height may be due solely to the periodic tidal forces or it may have superimposed upon it the effects of prevailing meteorological conditions. Use of the synonymous term, high tide, is discouraged.
LUNICURRENT INTERVAL—The interval between the Moon's transit (upper or lower) over the local or Greenwich meridian and a specified phase of the tidal current following the transit. Examples: strength of flood interval and strength of ebb interval, which may be abbreviated to flood interval and ebb interval, respectively. The interval is described as local or Greenwich according to whether the reference is to the Moon's transit over the local or Greenwich meridian. When not otherwise specified, the reference is assumed to be local.
HIGHER HIGH WATER (HHW)-The higher of the two high waters of any tidal day.
HIGHER LOW WATER (HLW)-The higher of the two low waters of any tidal day.
HYDRAULIC CURRENT-A current in a channel caused by a difference in the surface level at the two ends. Such a current may be expected in a strait connecting two bodies of water in which the tides differ in time or range. The current in the East River, N.Y., connecting Long Island Sound and New York Harbor, is an example.
LUNITIDAL INTERVAL—The interval between the Moon's transit (upper or lower) over the local or Greenwich meridian and the following high or low water. The average of all high water intervals for all phases of the Moon is known as mean high water lunitidal interval and is abbreviated to high water interval (HWI). Similarly the mean low water lunitidal interval is abbreviated to low water interval (LWI). The interval is described as local or Greenwich according to whether the reference is to the transit over the local or Greenwich meridian. When not otherwise specified, the reference is assumed to be local.
KNOT-A unit of speed, one international nautical mile (1,852.0 meters or 6,076.11549 international feet) per hour.
MEAN HIGH WATER (MHW)—A tidal datum. The arithmetic mean of the high water heights observed over a specific 19-year Metonic cycle (the National
LOW WATER (LW)- The minimum height reached by
MEAN LOW WATER (MLW)–A tidal datum. The arith metic mean of the low water heights observed over a specific 19-year Metonic cycle (the National Tidal Datum Epoch). For stations with shorter series, simultaneous observational comparisons are made with a primary control tide station in order to derive the equivalent of a 19-year value.
MEAN LOW WATER SPRINGS (MLWS-A tidal da tum. Frequently abbreviated spring low water. The arithmetic mean of the low water heights occurring at the time of the spring tides observed over a specific 19-year Metonic cycle (the National Tidal Datum Epoch).
NEAP TIDES OR TIDAL CURRENTS-Tides of de creased range or tidal currents of decreased speed occurring semimonthly as the result of the Moon being in quadrature. The neap range (Np) of the tide is the average semidiurnal range occurring at the time of neap tides and is most conveniently computed from the harmonic constants. It is smaller than the mean range where the type of tide is either semidiurnal or mixed and is of no practical significance where the type of tide is diurnal. The average height of the high waters of the neap tides is called neap high water or high water neaps (MHWN) and the average height of the corresponding low waters is called neap low water or low water neaps (MLWN).
MEAN LOWER LOW WATER (MLLW)-A tidal datum. The arithmetic mean of the lower low water heights of a mixed tide observed over a specific 19-year Metonic cycle (the National Tidal Datum Epoch). Only the lower low water of each pair of low waters, or the only low water of a tidal day is included in the mean.
MEAN RANGE OF TIDE (Mn)-The difference in height between mean high water and mean low water.
PERIGEAN TIDES OR TIDAL CURRENTS-Tides of increased range or tidal currents of increased speed occurring monthly as the result of the Moon being in perigee or nearest the Earth. The perigean range (Pn) of tide is the average semidiurnal range occurring at the time of perigean tides and is most conveniently computed from the harmonic constants. It is larger than the mean range where the type of tide is either semidiurnal or mixed, and is of no practical significance where the type of tide is diurnal.
MEAN RIVER LEVEL-A tidal datum. The average height of the surface of a tidal river at any point for all stages of the tide observed over a 19-year Metonic cycle (the National Tidal Datum Epoch), usually determined from hourly height readings. In rivers subject to occasional freshets the river level may undergo wide variations, and for practical purposes certain months of the year may be excluded in the determination of tidal datums. For charting purposes, tidal datums for rivers are usually based on observations during selected periods when the
RANGE OF TIDE—The difference in height between consecutive high and low waters, the mean range is the difference in height between mean high water and mean low water. Where the type of tide is diurnal the mean range is the same as the diurnal range. For other ranges, see great diurnal, spring, neap, perigean, apogean, and tropic tides
REFERENCE STATION-A tide or current station for Tide Tables and Tidal Current Tables, and from which corresponding predictions are obtained for subordinate stations by means of differences and ratios.
tance in navigation. The relation of the time of slack water to the tidal phases varies in different localities. For standing tidal waves, slack water occurs near the times of high and low water, while for progressive tidal waves, slack water occurs midway between high and low water.
REVERSING CURRENT-A tidal current which flows alternately in approximately opposite directions with a slack water at each reversal of direction. Currents of this type usually occur in rivers and straits where the direction of flow is more or less restricted to certain channels. When the movement is towards the shore or up a stream, the current is said to be flooding, and when in the opposite direction it is said to be ebbing. The combined flood and ebb movement including the slack water covers, on an average, 12.42 hours for the semidiurnal current. If unaffected by a nontidal flow, the flood and ebb movements will each last about 6 hours, but when combined with such a flow, the durations of flood and ebb may be quite unequal. During the flow in each direction the speed of the current will vary from zero at the time of slack water to a maximum about midway between the slacks.
SPRING TIDES OR TIDAL CURRENTS-Tides of in creased range or tidal currents of increased speed occurring semimonthly as the result of the Moon being new or full. The spring range (Sg) of tide is the average semidiurnal range occurring at the time of spring tides and is most conveniently computed from the harmonic constants. It is larger than the mean range where the type of tide is either semidiurnal or mixed, and is of no practical significance where the type of tide is diurnal. The mean of the high waters of the spring tide is called spring high water or mean high water springs (MHWS), and the average height of the corresponding low waters is called spring low water or mean low water springs (MLWS).
ROTARY CURRENT-A tidal current that flows con tinually with the direction of flow changing through all points of the compass during the tidal period. Rotary currents are usually found offshore where the direction of flow is not restricted by any barriers. The tendency for the rotation in direction has its origin in the Coriolis force and, unless modified by local conditions, the change is clockwise in the Northern Hemisphere and counterclockwise in the Southern. The speed of the current usually varies throughout the tidal cycle, passing through the two maxima in approximately opposite directions and the two minima with the direction of the current at approximately 90° from the direction at time of maximum speed.
STAND OF TIDE-Sometimes called a platform tide. An interval at high or low water when there is no sensible change in the height of the tide. The water level is stationary at high and low water for only an instant, but the change in level near these times is so slow that it is not usually perceptible. In general, the duration of the apparent stand will depend upon the range of tide, being longer for a small range than for a large range, but where there is a tendency for a double tide the stand may last for several hours even with a large range of tide.
STANDARD TIME-A kind of time based upon the transit of the Sun over a certain specified meridian, called the time meridian, and adopted for use over a considerable area. With a few exceptions, standard time is based upon some meridian which differs by a multiple of 15° from the meridian of Greenwich.
SEMIDIURNAL—Having a period or cycle of approxi mately one-half of a tidal day. The predominating type of tide throughout the world is semidiurnal, with two high waters and two low waters each tidal day. The tidal current is said to be semidiurnal when there are two flood and two ebb periods each day.
SET (OF CURRENT)—The direction towards which the current flows.
SLACK WATER-The state of a tidal current when its speed is near zero, especially the moment when a reversing current changes direction and its speed is zero. The term is also applied to the entire period of low speed near the time of turning of the current
STRENGTH OF CURRENT_Phase of tidal current in which the speed is a maximum; also the speed at this time. Beginning with slack before flood in the period of a reversing tidal current (or minimum before flood in a rotary current), the speed gradually increases to flood strength and then diminishes to slack before ebb (or minimum before ebb in a rotary current), after which the current turns in direction, the speed increases to ebb strength and then diminishes to slack before flood completing the cycle. If it is assumed that the speed throughout the cycle Page 22
8651 4146 1661 6906 4421 7746 591 7171 7231 6686,6691 1086 4256 3506 3511,3531 4371 7966 4506-4536 4516,4521 386 7961-7976 2521,2546 2661-2701 5641 3971 3976 4376 506 7446,7451 7991-8141 3356 6851,6856 6611 6616 7586 731 7701-7716 7771 1276,1281 6551,6556 7876 6091 6076 6256,6261 7866 311 1266 811 5701 7196-7206 6546
Gadsden Point Cut... 8351 Gallops Island... 1361-1371,1441 Galloupes point. 1006 Galveston Bay.... 8566-8596 Galveston Bay entrance 8566 Galveston Causeway RR. Bridge 8586 Galveston Channel... 8581 Gandy Bridge... 8331,8336 Gangway Rock.. 891 Gannet Rock... 61 Gardiners Bay.. 2581-2656 Gardiners Island. 2556 Gardiners point... 2611 Gardiners Point Ruins 2606 Gasparilla Pass... 8121 Gay Head..... 1956, 1966, 1971 George Washington Bridge 3651 Georges Bank and vicinity. 1671 Georges Island... 1351,1356,1386-1416 Georgetown, Md. 6126 Georgetown, S.C. 6481 Germantown Point. 1586 Gilmerton Highway Bridge 5191 Gloucester.... 4351 Gloucester Harbor entrance 976 Gloucester point... 5356,5361 Goat Island..... 866,931,936 Goff point, Gardiners Bay 2581 Goff point, York River. 5391 Golden Gate Point... 8161 Gooseberry Neck.. 2041 Goshen point... 2766,6876,6881 Gould Island.. 2251,2256 Government Cut.. 7916-7936 Grace Point, 2.0 miles NW of. 2461 Grand Trunk Wharfs.. 721 Grants Tomb.... 3646 Grape Island.. 1551,1556 Grass Hassock Channel 3591 Great Gull Island... 2726 Great Pig Rocks ... 1001 Great Point.. 1771,1776 Great Point Clear... 8461 Great Round Shoal Channel. 1726 Great Salt Pond entrance. 2436, 2441 Great Spruce Head Island. 196 Great Wicomico River. 5661 Great Wicomico River Lt. 4666 Green Hill point... 2451 Greenbury point. 6021 Greenwich Bay... 2341 Greenwich Point, Delaware Bay 4356 Greenwich Point, L. 1. Sound. 3186,3191 Gregory Point. 3111 Grog Island.. 136 Grove Point. 5026,6116 Gulfport... 8381 Page 23
No. No. Gull point... 1576 Huckleberry Island. 3266,3271 Gunboat Shoal. 946 Hudson.... 3756 Gunpowder River entrance 6106 Hudson River. 3641-3781 Gurnet point. 1651 Hudson River entrance 3641 Gwynn Island. 4616,4621 Hull Gut.... 1421 Hunniwell point. 576 H Huntington Bay. 3131 Hunts Point.... 3371 Hackensack River. 3931 Hussey Sound.. 621-641 Haig point light. 7131 Hutchinson Island. 6931 Hail Point... 6051 Hutchinson River. 3311 Hains point. 5821 Hyannis Harbor.. 1851 Halfmoon Shoal. 1761,1766 Hyde Park..... 37 26 Hallowing point. 5811 Hypocrite Channel. 1116 Hammonasset point. 2921, 2926 Hampton Roads... 5056-5146 I Handkerchief Lighted Whistle Buoy "H".. 1756 Harbor Key... 8251 India point... 2361 Harbor of Refuge 2376,2381,2396 Indian River Inlet. 4416 Harlem River, 3466-3501 Indian Rocks Beach.. 8406 Harris Creek. 5956 Intracoastal Waterway, Southport, N.C. 6341 Hart Island, N.Y 3286,3291,3294,3296 Isaac Shoal... 8066 Hartford Jetty 2861 Isla Marina.. 8656 Hatchett Point 2814,2816 Isle au Haut. 151 Hat Island... 126 Isle of Hope City 7351,7356 Hatteras Inlet. 6206 Isles of Shoals Light 951 Haverstraw... 3686 Isleboro Harbor.... 276,511,516 Havre de Grace. 5051 Hay Beach Point. 2626 J Head of the Cape 521,526 Heald Bank.. 8616 Jacksonville. 7836,7841 Hedge Fence 1911 Jamaica Bay.. 3561-3591 Hedge Fence Lighted Gong Buoy. 1871 Jamaica Island, Portsmouth Harbor. 836 Hell Gate * (32). 3396 Jamaica Point, off.... 5926 Hempstead Harbor. 3226,3231,3241 James Island, Chesapeake Bay 4791,4796 Henderson point. 871,876 James River... 5211-5306 Hendersons Point... 6141 Jamestown Island... 5256 Henry Hudson Bridge. 3501 Jamestown, Narragansett Bay 2331 Herbert C. Bonner Bridge. 6201 Janes Island.... 5571 Herod point.. 2961,2966,2968 Jehossee Island. 6921 Heron Neck... 356 Jekyll Creek. 7686 Hick Rocks... 826 Jennings Point. 2631 Higganum Creek. 2846 Joe Island... 8246 High Bridge. 3486 Joe's Cut... 7316 Highland Falls. 3701 Johns Island... 6841 Hills Point.... 5886 Johns Island Airport. 6826 Hillsborough Bay 8356,8361 Johns Island Bridge. 6831 Hilton Head.... 7041 Johns Pass.... 8396 Hobcaw Creek.. 6756 Johnson Creek. 7526 Hoffman Island.. 3831 es Inlet... 3536 Hog Creek Point... 2591 Jones Point, Alexandria, Va.. 5816 Hog Island, Narragansett Bay 2281 Jones Point, Penobscot Bay. 306 Hog Island, Penobscot Bay. 221 Jones Point, Rappa hannock River. 5491 Hog Island, Delaware River 4331 Hog Island Channel.. 6606 K Hog Island Reach.... 6631,6646 Hog Point, James River. 5251 Katama Point, Katama Bay 1886 Hog Point, Patuxent River 5846 Kedges Strait.... 5581 Hole Point Reach... 1601 Kelly Island. 4136 Holland point.... 4836,5901 Kelly point. 4276 Honga River Entrance.. 5656 Kelsey point... 2896,2916 Hooper Strait, Chesapeake Bay. 4746 Kennebec River. 576-606 Hooper Dtrait, Tangier sound. 5646,5651 Kent Island Narrows 6046 Horlbeck Creek entrance. 67 66,6776 Kent Point.... 4841,4846,5966 Horse Head Island .... 201 Kenwood Beach. 4786 Horse Reach..... 6626 Key West.... 8021-8051 Horseshoe point. 4851 8031 Horseshoe Shoal 6361 Keyport Channel 3861 Horton point... 2911 Kickamuit River 2296 Housatonic River. 3006-3026 Kill Van Kull. 3916,3921 House Island... 711 King Island. 7266 Houston Channel 8591,8596 Kings Bay.. 7731 Howard Ledges. 256,261 Kings Cove.. 1581 Page 24
Greenwich mean time (GMT) or universal time (UT) is the mean solar time on the Greenwich meridian reckoned in days of 24 mean solar hours written as 00" at midnight and 12h at noon. To convert the above times to those of other standard time meridians, add 1 hour for each 15° of east longitude of the desired meridian and subtract 1 hour for each 15° of west longitude. This table was compiled from data supplied by the Nautical Almanac Office, United States Naval Observatory. Page 25
Greenwich mean time (GMT) or universal time (UT) is the mean solar time on the Greenwich meridian reckoned in days of 24 mean solar hours written as 00" at midnight and 12h at noon. To convert the above times to those of other standard time meridians, add 1 hour for each 15° of east longitude of the desired meridian and subtract 1 hour for each 15° of west longitude. This table was compiled from data supplied by the Nautical Almanac Office, United States Naval Observatory. Page 26
SOURCES OF ADDITIONAL INFORMATION
PUBLICATIONS: Tide Tables, Tidal Current Tables, Tidal Current Charts, United States Coast Pilots, Distance Tables, and Nautical Charts may be ordered from: National Oceanic and Atmospheric Administration Distribution Branch 6501 Lafayette Ave. Riverdale, MD 20737 (301) 436-6990 A list of authorized sales agents is published in the Nautical Chart Catalogs or may be obtained on request from the National Ocean Service. The publications may also be purchased across-the-counter at the NOAA, Distribution Branch office listed above.
Technical questions relating to tide and current predictions, as well as requests for special predictions, should be addressed to: National Ocean Service Coastal and Estuarine Oceanography Branch 1305 East-West Highway Silver Spring, MD 20910 (301) 713-2815 Technical questions relating to actual tide observations and tidal datums, should be addressed to: National Ocean Service Products and Services Branch 1305 East-West Highway Silver Spring, MD 20910 (301) 713-2877 Technical questions relating to other publications and nautical charts should be addressed to: National Ocean Service Mapping and Charting Branch 1315 East-West Highway. Silver Spring, MD 20910 (301) 713-2729
Corrections to this publication, after the date of printing, may appear in the Notice to Mariners. They may also appear in the Local Notice to Mariners, published weekly, by the various United States Coast Guard Districts. |
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