Sharkfin Shoal (Maryland)
Historical Light List Characteristics
| 1893 | F WR. W12, R12. Red sector from N. 1/4 E. through southwestward to E. 1/2 S. | LHB Light List (Atlantic): 472 |
| 1898 | LHB Light List (Atlantic): 568 | |
| 1899 | LHB Light List (Atlantic): 583 | |
| 1905 | F WR. W12, R12. Red sector from N. 3/8 E. through southwestward to E. 5/8 S. | LHB Light List (Atlantic): 677 |
| 1908 | F WR. W12, R12. R0061/3°-0981/4°(91.92°), W0981/4°-0061/3°(268.08°). | LHB Light List (Atlantic): 734 |
| 1915 | F WR. W12, R9. R000°-091°(91°), W091°-000°(269°). | USLHS Light List (Atlantic): 1016 |
| 1917 | USLHS Light List (Atlantic): 1052 | |
| 1920 | USLHS Light List (Atlantic): 1104 | |
| 1927 | USLHS Light List (Atlantic): 1193 | |
| 1931 | USLHS Light List (Atlantic): 1520 | |
| 1935 | USLHS Light List (Atlantic): 1885 | |
| 1943 | USCG Light List (Atlantic): 2456 | |
| 1945-1947 | ||
| 1950 | ||
| 1951-1952 | Fl WR 10s. W12, R9. fl 2. R000°-091°(91°), W091°-000°(269°). | |
| 1953-1955 | Fl WR 10s. W12, R8. fl 2. R000°-091°(91°), W091°-000°(269°). | USCG Light List - Vol. I-VI: 2894 |
| 1957 | ||
| 1959-1960 | USCG Light List - Vol. I-V: 3384 | |
| 1961 | USCG Light List - Vol. I: 3384 | |
| 1963 | ||
| 1965 | ||
| 1966 | Fl WR 10s. W12, R12. fl 2. R000°-091°(91°), W091°-000°(269°). | USCG Light List - Vol. I: 3717 |
| 1969-1970 | ||
| 1972 | Fl WR 6s. W12, R12. fl 1. R000°-091°(91°), W091°-000°(269°). | |
| 1973-1974 | Fl WR 6s. W9, R7. R000°-091°(91°), W091°-000°(269°). | |
| 1976 | ||
| 1978 | ||
| 1982 | ||
| 1987 | Fl WR 6s. W9, R6. R000°-091°(91°), W091°-000°(269°). | USCG Light List - Vol. II: 17590 |
| 1990-1992 | USCG Light List - Vol. II: 21685 | |
| 1993-1996 | USCG Light List - Vol. II: 23590 | |
| 2004 | Fl WR 6s. W9, R6. R000°-191°(191°), W191°-000°(169°). |
Historical Light List Optics and Structures
| 1893 | 4th | N/A | 44 | White hexagonal screw-pile structure; piles and roof, brown; lantern, black; window shutters, green. Stands in 9 feet at mean low water. | LHB Light List (Atlantic): 472 |
| 1898 | White hexagonal screw-pile structure; piles and roof, brown; lantern, black; window shutters, green. In 9 feet of water. | LHB Light List (Atlantic): 568 | |||
| 1899 | White hexagonal screw-pile structure; piles and roof, brown; lantern, black. window shutters, green. In 9 feet of water. | LHB Light List (Atlantic): 583 | |||
| 1905 | White hexagonal screw-pile structure; piles and roof, brown; lantern, black; window shutters, green. In 9 feet of water. | LHB Light List (Atlantic): 677 | |||
| 1908 | White, hexagonal, screw-pile structure; brown piles and roof; black lantern; green window shutters. In 7 feet of water. | LHB Light List (Atlantic): 734 | |||
| 1915 | N/A | White; hexagonal; on brown piles. In 11/4 fathoms. | USLHS Light List (Atlantic): 1016 | ||
| 1917 | White, hexagonal; on brown piles. In 11/4 fathoms. | USLHS Light List (Atlantic): 1052 | |||
| 1920 | USLHS Light List (Atlantic): 1104 | ||||
| 1927 | USLHS Light List (Atlantic): 1193 | ||||
| 1931 | 4 o | White hexagonal on brown piles. In 7 feet. | USLHS Light List (Atlantic): 1520 | ||
| 1935 | 4 iov | USLHS Light List (Atlantic): 1885 | |||
| 1943 | White hexagonal house on brown piles. In 7 feet. | USCG Light List (Atlantic): 2456 | |||
| 1945-1947 | |||||
| 1950 | |||||
| 1951-1952 | 200 mm e | ||||
| 1953-1955 | N/A | USCG Light List - Vol. I-VI: 2894 | |||
| 1957 | |||||
| 1959-1960 | USCG Light List - Vol. I-V: 3384 | ||||
| 1961 | USCG Light List - Vol. I: 3384 | ||||
| 1963 | |||||
| 1965 | |||||
| 1966 | N/A | N/A | 44 | Black and red rectangular daymark on skeleton tower. In 7 feet. | USCG Light List - Vol. I: 3717 |
| 1969-1970 | Red and white checkered diamond daymark on skeleton tower. In 7 feet. | ||||
| 1972-1974 | NR on skeleton tower. In 7 feet. | ||||
| 1976 | |||||
| 1978 | |||||
| 1982 | |||||
| 1987 | NR on skeleton tower. | USCG Light List - Vol. II: 17590 | |||
| 1990 | USCG Light List - Vol. II: 21685 | ||||
| 1991-1992 | NB on skeleton tower. | ||||
| 1993-1996 | USCG Light List - Vol. II: 23590 | ||||
| 2004 |
Historical Light List Audible Fog Signals
| 1893 | Bell struck by machinery every 15 sec. | None | LHB Light List (Atlantic): 472 |
| 1898 | LHB Light List (Atlantic): 568 | ||
| 1899 | Bell struck by machinery a double blow every 15 sec. | LHB Light List (Atlantic): 583 | |
| 1905 | LHB Light List (Atlantic): 677 | ||
| 1908 | LHB Light List (Atlantic): 734 | ||
| 1915 | Bell; 2 strokes every 15 sec. | USLHS Light List (Atlantic): 1016 | |
| 1917 | Bell; gp. 2 strokes every 15 sec. | USLHS Light List (Atlantic): 1052 | |
| 1920 | USLHS Light List (Atlantic): 1104 | ||
| 1927 | USLHS Light List (Atlantic): 1193 | ||
| 1931 | BELL; gp. 2 strokes every 15 sec. | USLHS Light List (Atlantic): 1520 | |
| 1935 | USLHS Light List (Atlantic): 1885 | ||
| 1943 | BELL; group of 2 strokes every 15 sec. | USCG Light List (Atlantic): 2456 | |
| 1945-1947 | |||
| 1950 | |||
| 1951 | BELL, CO2; 1 stroke every 10 sec. | ||
| 1952 | BELL (CO2); 1 stroke every 10 sec. | ||
| 1953-1955 | BELL: 1 stroke ev 20s. | USCG Light List - Vol. I-VI: 2894 | |
| 1957 | |||
| 1959-1960 | USCG Light List - Vol. I-V: 3384 | ||
| 1961 | USCG Light List - Vol. I: 3384 | ||
| 1963 | |||
| 1965 | |||
| 1966 | USCG Light List - Vol. I: 3717 | ||
| 1969-1970 | BELL: 1 stroke ev 15s. | ||
| 1972-1974 | |||
| 1976 | |||
| 1978 | |||
| 1982 | BELL: 1 stroke ev 15s. | ||
| 1987 | BELL: 1 stroke ev 15s. | USCG Light List - Vol. II: 17590 | |
| 1990-1992 | None | USCG Light List - Vol. II: 21685 | |
| 1993-1996 | USCG Light List - Vol. II: 23590 | ||
| 2004 |
 |
1892 - Present (The 1964 modern light was placed on the original foundation.) |