Southwest Ledge (Connecticut)
Historical Light List Characteristics
| 1878-1879 | F W. W13. | LHB Light List (All Coasts): 169 |
| 1886 | LHB Light List (All Coasts): 177 | |
| 1888 | LHB Light List (All Coasts): 184 | |
| 1893 | F WR. W13, R13. Red sector between WNW. 1/8 W. and W. 3/4 N. | LHB Light List (Atlantic): 246 |
| 1898 | F WR. W123/4, R123/4. Red sector between W. 3/4 N. and WNW. 1/8 W. | LHB Light List (Atlantic): 284 |
| 1899 | LHB Light List (Atlantic): 292 | |
| 1905 | LHB Light List (Atlantic): 313 | |
| 1908 | LHB Light List (Atlantic): 332 | |
| 1915 | F WR. W12, R9. R269°-283°(14°), W283°-269°(346°). | USLHS Light List (Atlantic): 416 |
| 1917 | USLHS Light List (Atlantic): 428 | |
| 1920 | F WR. W12, R12. R269°-283°(14°), W283°-269°(346°). | USLHS Light List (Atlantic): 448 |
| 1927 | USLHS Light List (Atlantic): 463 | |
| 1931 | USLHS Light List (Atlantic): 444 | |
| 1935 | Fl R 5s. R12. fl 0.5. | USLHS Light List (Atlantic): 520 |
| 1940 | Fl R 5s. R13. fl 0.5. | USCG Light List (Atlantic): 495 |
| 1943 | USCG Light List (Atlantic): 625 | |
| 1945-1947 | ||
| 1950-1952 | ||
| 1953 | USCG Light List - Vol. I-VI: 694 | |
| 1954-1955 | Fl R 5s. R13. fl 2. | |
| 1957 | ||
| 1959-1960 | USCG Light List - Vol. I-V: 758 | |
| 1961 | USCG Light List - Vol. I: 758 | |
| 1963-1965 | ||
| 1966 | USCG Light List - Vol. I: 957 | |
| 1969-1972 | ||
| 1973-1979 | Fl R 5s. R9. fl 2. | |
| 1982 | ||
| 1987 | Fl R 5s. R9. | USCG Light List - Vol. I: 20245 |
| 1990-1992 | Fl R 5s. R13. | USCG Light List - Vol. I: 19970 |
| 1993-1996 | USCG Light List - Vol. I: 21210 | |
| 2004 | Fl R 5s. R14. |
Historical Light List Optics and Structures
| 1878 | 4th | 32 | 57 | An iron tubular foundation, rising 271/2 feet above mean water to the gallery, upon which is a one-story octagonal house with Mansard roof, both painted a very light drab, surmounted by the lantern in the centre. | LHB Light List (All Coasts): 169 |
| 1879 | An iron tubular foundation, rising 271/2 feet above mean low water to the gallery, upon which is a one-story octagonal house with Mansard roof, both painted a very light drab, surmounted by the lantern in the centre. | ||||
| 1886 | A red octagonal house, on a cylindrical foundation, surmounted by a lantern. | LHB Light List (All Coasts): 177 | |||
| 1888 | LHB Light List (All Coasts): 184 | ||||
| 1893 | White octagonal house, one-story, with high Mansard roof; lantern black, on brown cylindrical foundation. | LHB Light List (Atlantic): 246 | |||
| 1898 | 541/4 | LHB Light List (Atlantic): 284 | |||
| 1899 | LHB Light List (Atlantic): 292 | ||||
| 1905 | White, octagonal, one-story house, with high Mansard roof; lantern black; on brown cylindrical foundation. | LHB Light List (Atlantic): 313 | |||
| 1908 | White, octagonal, one-story house, with high Mansard roof; black lantern; brown cylindrical foundation. | LHB Light List (Atlantic): 332 | |||
| 1915 | N/A | N/A | 54 | White, octagonal house; brown, cylindrical pier. | USLHS Light List (Atlantic): 416 |
| 1917 | USLHS Light List (Atlantic): 428 | ||||
| 1920 | White, octagonal house; on brown, cylindrical pier. | USLHS Light List (Atlantic): 448 | |||
| 1927 | USLHS Light List (Atlantic): 463 | ||||
| 1931 | 4 iov | White octagonal house; on brown cylindrical pier. | USLHS Light List (Atlantic): 444 | ||
| 1935 | USLHS Light List (Atlantic): 520 | ||||
| 1940 | USCG Light List (Atlantic): 495 | ||||
| 1943 | USCG Light List (Atlantic): 625 | ||||
| 1945-1947 | |||||
| 1950-1952 | |||||
| 1953 | N/A | White octagonal house on brown cylindrical pier. | USCG Light List - Vol. I-VI: 694 | ||
| 1954-1955 | 57 | ||||
| 1957 | |||||
| 1959-1960 | USCG Light List - Vol. I-V: 758 | ||||
| 1961 | USCG Light List - Vol. I: 758 | ||||
| 1963-1965 | |||||
| 1966 | USCG Light List - Vol. I: 957 | ||||
| 1969-1979 | |||||
| 1982 | |||||
| 1987 | USCG Light List - Vol. I: 20245 | ||||
| 1990-1992 | USCG Light List - Vol. I: 19970 | ||||
| 1993-1996 | USCG Light List - Vol. I: 21210 | ||||
| 2004 |
Historical Light List Audible Fog Signals
| 1878-1879 | A bell, struck by machinery, at intervals of 15 seconds. | None | LHB Light List (All Coasts): 169 |
| 1886 | Bell struck by machinery every 15 sec. | LHB Light List (All Coasts): 177 | |
| 1888 | LHB Light List (All Coasts): 184 | ||
| 1893 | LHB Light List (Atlantic): 246 | ||
| 1898 | Daboll trumpet; blasts 3 sec., alternate silent intervals, 3 and 11 sec. | If trumpet be disabled, a bell will be struck by machinery every 15 sec. | LHB Light List (Atlantic): 284 |
| 1899 | LHB Light List (Atlantic): 292 | ||
| 1905 | If trumpet be disabled a bell will be struck by machinery every 15 sec. | LHB Light List (Atlantic): 313 | |
| 1908 | 2d-class Daboll trumpet; blasts 3 sec., alternate silent intervals 3 and 11 sec. | LHB Light List (Atlantic): 332 | |
| 1915 | 2d-cl. reed horn; gp. 2 blasts every 20 sec.: 1st blast 3 sec., silent 3 sec., 2d blast 3 sec., silent 11 sec. | None | USLHS Light List (Atlantic): 416 |
| 1917 | USLHS Light List (Atlantic): 428 | ||
| 1920 | USLHS Light List (Atlantic): 448 | ||
| 1927 | USLHS Light List (Atlantic): 463 | ||
| 1931 | HORN, 2d cl. reed; gp. 2 blasts every 20 sec.: blast 3 sec., silent 3 sec., blast 3 sec., silent 11 sec. | USLHS Light List (Atlantic): 444 | |
| 1935 | TYFON, air: blast 3 sec., silent 17 sec. | USLHS Light List (Atlantic): 520 | |
| 1940 | HORN, diaphragm, air: blast 3 sec., silent 17 sec. | USCG Light List (Atlantic): 495 | |
| 1943 | USCG Light List (Atlantic): 625 | ||
| 1945-1947 | |||
| 1950-1951 | |||
| 1952 | HORN, diaphragm, air; blast 3 sec., silent 17 sec. | ||
| 1953 | HORN, diaphragm; 1 blast ev 20s (3sbl). | USCG Light List - Vol. I-VI: 694 | |
| 1954-1955 | SIREN: 1 blast ev 20s (4sbl). | ||
| 1957 | |||
| 1959-1960 | USCG Light List - Vol. I-V: 758 | ||
| 1961 | USCG Light List - Vol. I: 758 | ||
| 1963-1964 | |||
| 1965 | HORN, diaphragm; 1 blast ev 20s (2sbl). | ||
| 1966 | USCG Light List - Vol. I: 957 | ||
| 1969-1972 | |||
| 1973-1975 | HORN, 1 blast ev 15s (2sbl). | ||
| 1976-1979 | 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. I: 20245 | |
| 1990-1992 | USCG Light List - Vol. I: 19970 | ||
| 1993-1996 | USCG Light List - Vol. I: 21210 | ||
| 2004 | HORN: 1 blast ev 15s (2s bl). |
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1877 - Present |