Thomas Point Shoal (Maryland)

Historical Light List Characteristics

1878 Fl R 30s. R113/4. LHB Light List (All Coasts): 301
1879 LHB Light List (All Coasts): 305
1886 Fl R 30s. R12. LHB Light List (All Coasts): 352
1888 LHB Light List (All Coasts): 369
1893 Fl WR 30s. W113/4, R113/4. White sector from N. by E. 1/4 E. through eastward to SSW. 1/4 W. LHB Light List (Atlantic): 479
1898 Fl WR 30s. W113/4, R113/4. White sector from SSW. 1/4 W. through eastward to N. by E. 1/4 E. LHB Light List (Atlantic): 577
1899 LHB Light List (Atlantic): 592
1905 LHB Light List (Atlantic): 689
1908 Fl WR 30s. W113/4, R113/4. R0163/4°-2081/2°(1913/4°), W2081/2°-0163/4°(1681/4°). LHB Light List (Atlantic): 748
1915 Fl WR 5s. W12, R12. fl 1.3. R011°-202°(191°), W202°-011°(169°). USLHS Light List (Atlantic): 1049
1917 USLHS Light List (Atlantic): 1084
1920 USLHS Light List (Atlantic): 1136
1927 USLHS Light List (Atlantic): 1233
1931 Fl WR 5s. W12, R12. fl 1.3. R011°-0511/2°(401/2°), W0511/2°-0961/2°(45°), R0961/2°-202°(1051/2°), W202°-011°(169°). USLHS Light List (Atlantic): 1195
1935 Fl WR 5s. W12, R12. fl 1. R011°-0511/2°(401/2°), W0511/2°-0961/2°(45°), R0961/2°-202°(1051/2°), W202°-011°(169°). USLHS Light List (Atlantic): 1461
1943 USCG Light List (Atlantic): 1912
1945-1947
1950-1952
1953-1955 USCG Light List - Vol. I-VI: 2083
1957
1959-1960 USCG Light List - Vol. I-V: 2471
1961 USCG Light List - Vol. I: 2471
1963
1965
1966 USCG Light List - Vol. I: 2747
1969-1970 Fl WR 6s. W12, R12. fl 1. R011°-0511/2°(401/2°), W0511/2°-0961/2°(45°), R0961/2°-202°(1051/2°), W202°-011°(169°).
1972
1973-1974 Fl WR 6s. W13, R10. R011°-0511/2°(401/2°), W0511/2°-0961/2°(45°), R0961/2°-202°(1051/2°), W202°-011°(169°).
1976 Fl WR 6s. W13, R11. R011°-0511/2°(401/2°), W0511/2°-0961/2°(45°), R0961/2°-202°(1051/2°), W202°-011°(169°).
1978
1982
1987 USCG Light List - Vol. II: 3030
1990-1992 USCG Light List - Vol. II: 7145
1993-1996 USCG Light List - Vol. II: 7760
2004 Fl WR 5s. W16, R11. R011°-0511/2°(401/2°), W0511/2°-0961/2°(45°), R0961/2°-202°(1051/2°), W202°-011°(169°).

Historical Light List Optics and Structures

1878 4th N/A 431/2 An hexagonal screw-pile light-house. Foundation painted brown; superstructure, white; roof, brown; lantern, red. The light-house stands on 9 screw-piles, in 8 feet of water. LHB Light List (All Coasts): 301
1879 LHB Light List (All Coasts): 305
1886 White hexagonal screw-pile structure; piles and roof, brown; lantern, red. Stands in 8 feet of water. LHB Light List (All Coasts): 352
1888 White hexagonal screw-pile structure; piles and roof, brown; lantern, black. Stands in 8 feet of water. LHB Light List (All Coasts): 369
1893 421/2 White hexagonal screw-pile structure; piles and roof, brown; lantern, black. Stands in 8 feet at mean lower water. LHB Light List (Atlantic): 479
1898 White hexagonal screw-pile structure; piles and roof, brown; lantern, black. In 8 feet of water. LHB Light List (Atlantic): 577
1899 LHB Light List (Atlantic): 592
1905 LHB Light List (Atlantic): 689
1908 White, hexagonal, screw-pile structure; brown piles and roof; black lantern. In 8 feet of water. LHB Light List (Atlantic): 748
1915 N/A 43 White; hexagonal; brown piles. In 11/4 fathoms. USLHS Light List (Atlantic): 1049
1917 White, hexagonal; brown piles. In 11/4 fathoms. USLHS Light List (Atlantic): 1084
1920 USLHS Light List (Atlantic): 1136
1927 USLHS Light List (Atlantic): 1233
1931 4 iov White hexagonal brown piles. In 7 feet. USLHS Light List (Atlantic): 1195
1935 4 ei White hexagonal, on brown piles. In 7 feet. USLHS Light List (Atlantic): 1461
1943 4 e USCG Light List (Atlantic): 1912
1945-1947
1950-1952 White hexagonal on brown piles. In 7 feet.
1953-1955 N/A White hexagonal tower on brown piles. In 7 feet. USCG Light List - Vol. I-VI: 2083
1957
1959-1960 USCG Light List - Vol. I-V: 2471
1961 USCG Light List - Vol. I: 2471
1963
1965
1966 USCG Light List - Vol. I: 2747
1969-1970
1972-1973
1974 White hexagonal tower on piles. In 7 feet.
1976
1978 White hexagonal tower on piles. In 5 feet.
1982
1987 White hexagonal tower on piles. USCG Light List - Vol. II: 3030
1990-1992 USCG Light List - Vol. II: 7145
1993-1996 USCG Light List - Vol. II: 7760
2004

Historical Light List Audible Fog Signals

1878 A bell, struck by machinery, three strokes in quick succession at an interval of 30 seconds. None LHB Light List (All Coasts): 301
1879 A bell, struck by machinery, 3 strokes in quick succession at an interval of 30 seconds. LHB Light List (All Coasts): 305
1886 Bell struck by machinery, a treble blow at intervals of 30 sec. LHB Light List (All Coasts): 352
1888 LHB Light List (All Coasts): 369
1893 Bell struck by machinery, a triple blow every 30 sec. LHB Light List (Atlantic): 479
1898 LHB Light List (Atlantic): 577
1899 LHB Light List (Atlantic): 592
1905 Bell struck by machinery a triple blow every 30 sec. LHB Light List (Atlantic): 689
1908 LHB Light List (Atlantic): 748
1915 Bell; 3 strokes every 30 sec. USLHS Light List (Atlantic): 1049
1917 Bell; gp. 3 strokes every 30 sec. USLHS Light List (Atlantic): 1084
1920 USLHS Light List (Atlantic): 1136
1927 USLHS Light List (Atlantic): 1233
1931 BELL; gp. 3 strokes every 30 sec. USLHS Light List (Atlantic): 1195
1935 DIAPHONE, air; blast 2 sec., silent 13 sec. USLHS Light List (Atlantic): 1461
1943 Bell, if diaphone disabled. Group of 3 strokes every 30 seconds. USCG Light List (Atlantic): 1912
1945-1947
1950-1952
1953 DIAPHONE: 1 blast ev 15s (2sbl). Bell, gp of 3 strokes ev 30s if diaphone is disabled. USCG Light List - Vol. I-VI: 2083
1954-1955 DIAPHONE: when operating, is synchronized with radiobeacon ev 3 minutes for distance finding.
1957
1959-1960 USCG Light List - Vol. I-V: 2471
1961 USCG Light List - Vol. I: 2471
1963 DIAPHONE: 1 blast ev 15s (2sbl).
1965
1966 USCG Light List - Vol. I: 2747
1969 Horn, diaphragm; 1 blast ev 15s (2sbl). Standby fog signal if main fog signal is inoperative, 1 blast ev 15s (2sbl).
1970 HORN, diaphragm; 1 blast ev 15s (2sbl). None
1972
1973-1974 HORN, 1 blast ev 15s (2sbl).
1976 HORN: 1 blast ev 15s (2sbl).
1978
1982 HORN: 1 blast ev 15s (2s bl).
1987 HORN: 1 blast ev 15s (2s bl). USCG Light List - Vol. II: 3030
1990-1992 USCG Light List - Vol. II: 7145
1993-1996 USCG Light List - Vol. II: 7760
2004 HORN: 1 blast ev 15s (2s bl).

Historical Light List Other Signals

1927 None USLHS Light List (Atlantic): 1233
1931 USLHS Light List (Atlantic): 1195
1935 USLHS Light List (Atlantic): 1461
1943 USCG Light List (Atlantic): 1912
1945-1947
1950-1952
1953 USCG Light List - Vol. I-VI: 2083
1954-1955 RADIOBEACON: 306 kc. (Code: ). Antenna at center of tower.
1957
1959-1960 RADIOBEACON: 306 kc (Code: ). Antenna at center of tower. USCG Light List - Vol. I-V: 2471
1961 USCG Light List - Vol. I: 2471
1963 RADIOBEACON: Antenna at center of tower.
1965 Special Radio Direction Finder Calibration Service (310 and 480 kHz, , For calibration on 310 kc, follow procedure on p. XVII (of light list); to change to 480 kc, dip flaghoist.).
1966 USCG Light List - Vol. I: 2747
1969-1970 Special Radio Direction Finder Calibration Service (310 and 480 kHz, , For calibration on 310 kHz, follow procedure on p. XIX (of light list); to change to 480 kHz, dip flaghoist.).
1972-1974 Special Radio Direction Finder Calibration Service (310 and 480 kHz, , For calibration on 310 kHz, follow procedure on p. XIX (of light list); to change to 480 kHz, dip flaghoist.).
1976 Special Radio Direction Finder Calibration Service (310 and 480 kHz, , For calibration on 310 kHz, follow procedure on p. XVII (of light list); to change to 480 kHz, dip flaghoist.).
1978 Special Radio Direction Finder Calibration Service (293 and 480 kHz, F3 , For calibration on 293 kHz follow procedure on p. XVI, XVII (of light list); to change to 480 kHz, dip flaghoist.).
1982
1987 Special Radio Direction Finder Calibration Service (293 and 480 kHz, F3 , For calibration on 293 kHz follow procedure on p. xx, xxi (of light list) to change to 480 kHz, dip flaghoist.). USCG Light List - Vol. II: 3030
1990-1992 None USCG Light List - Vol. II: 7145
1993-1996 USCG Light List - Vol. II: 7760
2004
1875 - Present