Sharps Island (Maryland)
Historical Light List Characteristics
| 1839 | F W. Lighthouse characteristic is assumed. | USLHE Light List (US): 154 |
| 1849 | F W. W12. | USLHE Light List (US): 165 |
| 1858 | F W. W10. | LHB Light List (US): 233 |
| 1860 | LHB Light List (US): 217 | |
| 1865-1866 | LHB Light List (All Coasts): 221 | |
| 1868 | LHB Light List (All Coasts): 224 | |
| 1870 | F W. W11. Arc illuminated S. 6 W. by W'd to S. 80 E. | LHB Light List (All Coasts): 235 |
| 1878 | LHB Light List (All Coasts): 299 | |
| 1879 | LHB Light List (All Coasts): 303 | |
| 1886 | F W. W123/4. | LHB Light List (All Coasts): 349 |
| 1888 | LHB Light List (All Coasts): 366 | |
| 1893 | F WR. W123/4, R123/4. Red sector from W. 1/2 S. through northeastward to S. by E. 5/8 E. | LHB Light List (Atlantic): 476 |
| 1898 | F WR. W123/4, R123/4. Red sector from S. by E. 5/8 E. through northeastward to W. 1/2 S. | LHB Light List (Atlantic): 574 |
| 1899 | LHB Light List (Atlantic): 589 | |
| 1905 | F WR. W123/4, R123/4. Red sector from S. by E. 5/8 E. through northeastward to W. 1/2 S; obscured between N. 7/8 E. and N. by E. 1/4 E. | LHB Light List (Atlantic): 683 |
| 1908 | F WR. W123/4, R123/4. W0162/3°-1641/4°(147.58°), R1641/4°-2671/4°(103°), W2671/4°-0121/4°(105°). | LHB Light List (Atlantic): 740 |
| 1915 | F WR. W13, R13. W011°-159°(148°), R159°-262°(103°), W262°-007°(105°). | USLHS Light List (Atlantic): 1033 |
| 1917 | USLHS Light List (Atlantic): 1069 | |
| 1920 | USLHS Light List (Atlantic): 1121 | |
| 1927 | USLHS Light List (Atlantic): 1211 | |
| 1931 | USLHS Light List (Atlantic): 1192 | |
| 1935 | USLHS Light List (Atlantic): 1458 | |
| 1943 | Fl WR 10s. W13, R13. fl 2. W011°-159°(148°), R159°-262°(103°), W262°-007°(105°). | USCG Light List (Atlantic): 1909 |
| 1945-1947 | ||
| 1950-1952 | ||
| 1953-1955 | Fl WR 10s. W13, R11. fl 2. W011°-159°(148°), R159°-262°(103°), W262°-007°(105°). | USCG Light List - Vol. I-VI: 2079 |
| 1957 | ||
| 1959-1960 | USCG Light List - Vol. I-V: 2465 | |
| 1961 | USCG Light List - Vol. I: 2465 | |
| 1963 | Fl WR 4s. W13, R9. fl 0.4. W011°-159°(148°), R159°-262°(103°), W262°-007°(105°). | |
| 1965 | ||
| 1966 | Fl WR 4s. W13, R13. W011°-159°(148°), R159°-262°(103°), W262°-007°(105°). | USCG Light List - Vol. I: 2743 |
| 1969-1970 | ||
| 1972 | ||
| 1973-1974 | Fl WR 6s. W10, R7. W011°-159°(148°), R159°-262°(103°), W262°-007°(105°). | |
| 1976 | ||
| 1978 | ||
| 1982 | Fl WR 6s. W9, R7. R159°-262°(103°), W262°-159°(257°). | |
| 1987 | USCG Light List - Vol. II: 2985 | |
| 1990-1992 | USCG Light List - Vol. II: 7090 | |
| 1993-1996 | USCG Light List - Vol. II: 7690 | |
| 2004 |
Historical Light List Optics and Structures
| 1849 | 10 Lamps / 14" Refl. | 30 | N/A | Light on keeper's dwelling; removed in 1848. | USLHE Light List (US): 165 |
| 1858 | 5th | 34 | 41 | Light on keeper's dwelling. | LHB Light List (US): 233 |
| 1860 | LHB Light List (US): 217 | ||||
| 1865 | LHB Light List (All Coasts): 221 | ||||
| 1866 | Light temporarily on tripod during construction of new tower. | ||||
| 1868 | 35 | N/A | Screw-pile light-house in 71/2 feet water. | LHB Light List (All Coasts): 224 | |
| 1870 | 35 | LHB Light List (All Coasts): 235 | |||
| 1878 | N/A | An hexagonal screw-pile light-house, in 71/2 feet water; iron foundation, brown; superstructure, white; roof, brown; lantern, red. | LHB Light List (All Coasts): 299 | ||
| 1879 | LHB Light List (All Coasts): 303 | ||||
| 1886 | 4th | 55 | 55 | Tower, standing on a caisson filled with concrete. Tower and caisson painted purple; lantern, red. Stands in 10 feet of water. | LHB Light List (All Coasts): 349 |
| 1888 | Tower, standing on a caisson filled with concrete. Tower and caisson painted purple; lantern, black. Stands in 10 feet of water. | LHB Light List (All Coasts): 366 | |||
| 1893 | N/A | 531/2 | Brown tower on brown cylindrical foundation; lantern black. Stands in 10 feet at mean low water. | LHB Light List (Atlantic): 476 | |
| 1898 | Brown tower on brown cylindrical foundation; lantern black. In 10 feet of water. | LHB Light List (Atlantic): 574 | |||
| 1899 | LHB Light List (Atlantic): 589 | ||||
| 1905 | Brown tower on brown, cylindrical foundation; lantern black. In 10 feet of water. | LHB Light List (Atlantic): 683 | |||
| 1908 | Brown tower on brown, cylindrical foundation; black lantern. In 10 feet of water. | LHB Light List (Atlantic): 740 | |||
| 1915 | N/A | 54 | Brown; tower on cylindrical pier. In 13/4 fathoms. | USLHS Light List (Atlantic): 1033 | |
| 1917 | USLHS Light List (Atlantic): 1069 | ||||
| 1920 | USLHS Light List (Atlantic): 1121 | ||||
| 1927 | USLHS Light List (Atlantic): 1211 | ||||
| 1931 | 4 iov | Brown tower on cylindrical pier. In 10 feet. | USLHS Light List (Atlantic): 1192 | ||
| 1935 | USLHS Light List (Atlantic): 1458 | ||||
| 1943 | 4 e | USCG Light List (Atlantic): 1909 | |||
| 1945-1947 | |||||
| 1950-1952 | |||||
| 1953-1955 | N/A | USCG Light List - Vol. I-VI: 2079 | |||
| 1957 | |||||
| 1959-1960 | USCG Light List - Vol. I-V: 2465 | ||||
| 1961 | USCG Light List - Vol. I: 2465 | ||||
| 1963 | |||||
| 1965 | |||||
| 1966 | USCG Light List - Vol. I: 2743 | ||||
| 1969-1970 | |||||
| 1972-1974 | |||||
| 1976 | |||||
| 1978 | |||||
| 1982 | |||||
| 1987 | Brown tower on cylindrical pier. Light is leaning from ice damage in 1977. | USCG Light List - Vol. II: 2985 | |||
| 1990-1992 | USCG Light List - Vol. II: 7090 | ||||
| 1993-1996 | USCG Light List - Vol. II: 7690 | ||||
| 2004 | Brown tower on cylindrical pier. |
Historical Light List Audible Fog Signals
| 1858 | None | None | LHB Light List (US): 233 |
| 1860 | LHB Light List (US): 217 | ||
| 1865-1866 | LHB Light List (All Coasts): 221 | ||
| 1868 | LHB Light List (All Coasts): 224 | ||
| 1870 | LHB Light List (All Coasts): 235 | ||
| 1878 | LHB Light List (All Coasts): 299 | ||
| 1879 | LHB Light List (All Coasts): 303 | ||
| 1886 | LHB Light List (All Coasts): 349 | ||
| 1888 | LHB Light List (All Coasts): 366 | ||
| 1893 | Bell struck by machinery, a double blow every 10 sec. | LHB Light List (Atlantic): 476 | |
| 1898 | Bell struck by machinery a double blow every 10 sec. | LHB Light List (Atlantic): 574 | |
| 1899 | LHB Light List (Atlantic): 589 | ||
| 1905 | LHB Light List (Atlantic): 683 | ||
| 1908 | LHB Light List (Atlantic): 740 | ||
| 1915 | Bell; 2 strokes every 10 sec. | USLHS Light List (Atlantic): 1033 | |
| 1917 | Bell; gp. 2 strokes every 10 sec. | USLHS Light List (Atlantic): 1069 | |
| 1920 | USLHS Light List (Atlantic): 1121 | ||
| 1927 | USLHS Light List (Atlantic): 1211 | ||
| 1931 | BELL; gp. 2 strokes every 10 sec. | USLHS Light List (Atlantic): 1192 | |
| 1935 | USLHS Light List (Atlantic): 1458 | ||
| 1943 | HORN, diaphragm, air group of 2 blasts every 30 sec., blast 1.5 sec., silent 1.5 sec., blast 1.5 sec., silent 25.5 sec. | Bell, group of 2 strokes every 10 sec., if horn is disabled. | USCG Light List (Atlantic): 1909 |
| 1945 | |||
| 1946-1947 | HORN, diaphragm, air; group of 2 blasts every 30 sec., blast 1.5 sec., silent 1.5 sec., blast 1.5 sec., silent 25.5 sec. | ||
| 1950 | |||
| 1951-1952 | BELL, electric; 1 stroke every 15 sec. | None | |
| 1953-1955 | BELL: 1 stroke ev 15s. | USCG Light List - Vol. I-VI: 2079 | |
| 1957 | |||
| 1959-1960 | USCG Light List - Vol. I-V: 2465 | ||
| 1961 | USCG Light List - Vol. I: 2465 | ||
| 1963 | BELL: 1 stroke ev 20s. | ||
| 1965 | |||
| 1966 | USCG Light List - Vol. I: 2743 | ||
| 1969 | |||
| 1970 | BELL: 1 stroke ev 15s. | ||
| 1972-1974 | |||
| 1976 | |||
| 1978 | HORN: 1 blast ev 15s (2sbl). | ||
| 1982 | HORN: 1 blast ev 15s (2s bl). | ||
| 1987 | HORN: 1 blast ev 15s (2s bl). | USCG Light List - Vol. II: 2985 | |
| 1990-1992 | USCG Light List - Vol. II: 7090 | ||
| 1993-1996 | USCG Light List - Vol. II: 7690 | ||
| 2004 | None |
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1838 - 1865 (Approximate location of 1865 temporary tripod. Assumed to be close to the 1848 location when it was relocated.) |
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1866 - 1881 (Approximate location of 1866 screwpile.) |
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1882 - Present |