Seguin Island (Maine)
Historical Light List Characteristics
| 1839 | F W. W22. | USLHE Light List (US): 2 |
| 1849 | ||
| 1858 | F W. W20. | LHB Light List (US): 41 |
| 1860 | LHB Light List (US): 35 | |
| 1865-1866 | LHB Light List (All Coasts): 35 | |
| 1868 | ||
| 1870 | LHB Light List (All Coasts): 36 | |
| 1878-1879 | LHB Light List (All Coasts): 44 | |
| 1886 | F W. W191/2. | LHB Light List (All Coasts): 43 |
| 1888 | LHB Light List (All Coasts): 45 | |
| 1893 | F W. W193/4. | LHB Light List (Atlantic): 52 |
| 1898-1899 | LHB Light List (Atlantic): 59 | |
| 1905 | LHB Light List (Atlantic): 62 | |
| 1908 | LHB Light List (Atlantic): 64 | |
| 1915 | F W. W20. | USLHS Light List (Atlantic): 73 |
| 1917 | USLHS Light List (Atlantic): 77 | |
| 1920 | ||
| 1927 | USLHS Light List (Atlantic): 79 | |
| 1931 | USLHS Light List (Atlantic): 78 | |
| 1935 | ||
| 1940 | USCG Light List (Atlantic): 88 | |
| 1943 | F W. W13. | USCG Light List (Atlantic): 106 |
| 1945 | ||
| 1946-1947 | F W. W20. | |
| 1950-1952 | ||
| 1953-1955 | USCG Light List - Vol. I-VI: 5 | |
| 1957 | ||
| 1959-1960 | USCG Light List - Vol. I-V: 5 | |
| 1961 | USCG Light List - Vol. I: 5 | |
| 1963-1966 | ||
| 1969-1972 | ||
| 1973-1979 | F W. W19. | |
| 1982 | F W. W18. | |
| 1987 | USCG Light List - Vol. I: 30 | |
| 1990-1992 | ||
| 1993-1996 | USCG Light List - Vol. I: 35 | |
| 2004 |
Historical Light List Optics and Structures
| 1839 | 14 Lamps / 15" Refl. | 40 | 163 | N/A | USLHE Light List (US): 2 |
| 1849 | 15 Lamps / 21" Refl. | 20 | 166 | ||
| 1858 | 2nd | 35 | 180 | LHB Light List (US): 41 | |
| 1860 | 1st | LHB Light List (US): 35 | |||
| 1865 | LHB Light List (All Coasts): 35 | ||||
| 1866 | |||||
| 1868 | |||||
| 1870 | Tower of granite, connected with dwelling by brick work-room. Dwelling, a story and one-half brick building. | LHB Light List (All Coasts): 36 | |||
| 1878-1879 | Tower of granite, natural color, connected with a one and a half story brick dwelling by a brick work-room. The fog-signals are in a one and a half story and a one-story frame building, painted white, standing about 250 feet to the southward of the tower. | LHB Light List (All Coasts): 44 | |||
| 1886 | Gray-granite tower, connected to dwelling by a work-room. Two white fog-signal buildings about 250 feet S. of tower. | LHB Light List (All Coasts): 43 | |||
| 1888 | Gray granite tower, connected with dwelling by a work-room. Two white fog-signal buildings about 250 feet south of tower. | LHB Light List (All Coasts): 45 | |||
| 1893 | 42 | Gray granite tower, connected with dwelling by a workroom. A brick fog-signal building and white frame dwelling about 2500 feet S. of tower. Oil house, bars, and outbuildings to northward. | LHB Light List (Atlantic): 52 | ||
| 1898-1899 | Cylindrical, gray granite tower, connected with dwelling by a workroom. A brick fog-signal building and white frame dwelling about 250 feet S. of tower. Oil house, barn, and outbuildings to northward. An elevated car track extends in a generally northeasterly direction from the fog-signal building to the boat landing. | LHB Light List (Atlantic): 59 | |||
| 1905 | White, cylindrical, granite tower, connected with dwelling by a workroom. White brick fog-signal building and white frame dwelling about 250 feet S. of tower; bell and frame on southerly side of fog-signal building. Oil house, barn, and outbuildings to northward. An elevated car track extends in a generally northeasterly direction from the fog-signal building to the boat landing. | LHB Light List (Atlantic): 62 | |||
| 1908 | White, cylindrical, granite tower, connected with dwelling by a workroom; white brick fog-signal building and white frame dwelling about 250 feet S'ly of tower; bell and frame on S'ly side of fog-signal building; oilhouse, barn, and outbuildings to N'd; elevated car track extends in a generally NE'ly direction from the fog-signal building to the boat landing. | LHB Light List (Atlantic): 64 | |||
| 1915 | N/A | 53 | White; cylindrical, granite tower, connected to dwelling. | USLHS Light List (Atlantic): 73 | |
| 1917 | USLHS Light List (Atlantic): 77 | ||||
| 1920 | |||||
| 1927 | USLHS Light List (Atlantic): 79 | ||||
| 1931 | 1 iov | White, cylindrical, granite tower, connected to dwelling. | USLHS Light List (Atlantic): 78 | ||
| 1935 | |||||
| 1940 | USCG Light List (Atlantic): 88 | ||||
| 1943 | USCG Light List (Atlantic): 106 | ||||
| 1945-1946 | |||||
| 1947 | White, cylindrical, granite tower connected to dwelling. | ||||
| 1950-1952 | |||||
| 1953-1955 | N/A | White cylindrical granite tower connected to dwelling. | USCG Light List - Vol. I-VI: 5 | ||
| 1957 | |||||
| 1959-1960 | USCG Light List - Vol. I-V: 5 | ||||
| 1961 | USCG Light List - Vol. I: 5 | ||||
| 1963-1966 | |||||
| 1969-1979 | |||||
| 1982 | |||||
| 1987 | USCG Light List - Vol. I: 30 | ||||
| 1990-1992 | White cylindrical tower connected to dwelling. | ||||
| 1993-1996 | USCG Light List - Vol. I: 35 | ||||
| 2004 |
Historical Light List Audible Fog Signals
| 1858 | Fog-bell | None | LHB Light List (US): 41 |
| 1860 | LHB Light List (US): 35 | ||
| 1865-1866 | Fog-bell struck by machinery. | LHB Light List (All Coasts): 35 | |
| 1868 | |||
| 1870 | A bell struck by machinery. | LHB Light List (All Coasts): 36 | |
| 1878-1879 | A 10-inch steam fog-whistle, in duplicate, giving blasts of 8 seconds, at intervals of 52 seconds. | LHB Light List (All Coasts): 44 | |
| 1886 | 10-inch steam-whistle; blasts 8 sec., intervals 52 sec.. | LHB Light List (All Coasts): 43 | |
| 1888 | 10-inch steam-whistle; blasts 8 sec., intervals 52 sec. | If steam-whistle be disabled, a bell will be struck by hand. | LHB Light List (All Coasts): 45 |
| 1893 | 10-inch steam-whistle; blasts 8 sec., silent intervals 52 sec. | If whistle be disabled, a bell will be struck by hand. | LHB Light List (Atlantic): 52 |
| 1898 | 10-inch steam-whistle; blasts 3 sec., silent intervals 57 sec. | LHB Light List (Atlantic): 59 | |
| 1899 | 10-inch steam-whistle; blasts 5 sec., silent intervals 25 sec. | ||
| 1905 | 10-inch steam-whistle; blasts 5 sec., silent intervals 15 sec. | If whistle be disabled a bell will be struck by hand. | LHB Light List (Atlantic): 62 |
| 1908 | LHB Light List (Atlantic): 64 | ||
| 1915 | 10-inch steam-whistle; blast 5 sec., silent 15 sec. | Bell (hand) if whistle is disabled. | USLHS Light List (Atlantic): 73 |
| 1917 | USLHS Light List (Atlantic): 77 | ||
| 1920 | |||
| 1927 | Air diaphone; gp. 2 blasts every 20 sec.: 1st blast 1.5 sec., silent 1.0 sec., 2d blast 1.5 sec., silent 16.0 sec. | Bell (1,300-lb.) if whistle is disabled. | USLHS Light List (Atlantic): 79 |
| 1931 | DIAPHONE, air; gp. 2 blasts every 20 sec.: blast 1.5 sec., silent 1 sec., blast 1.5 sec., silent 16 sec. | Bell, if diaphone disabled. | USLHS Light List (Atlantic): 78 |
| 1935 | |||
| 1940 | DIAPHONE, air; group of 2 blasts every 20 sec.: blast 1.5 sec., silent 1 sec., blast 1.5 sec., silent 16 sec. | USCG Light List (Atlantic): 88 | |
| 1943 | USCG Light List (Atlantic): 106 | ||
| 1945-1947 | |||
| 1950-1951 | |||
| 1952 | DIAPHONE, air; group of 2 blasts every 20 sec.; blast 1.5 sec., silent 1 sec., blast 1.5 sec., silent 16 sec. | ||
| 1953-1955 | DIAPHONE: gp of 2 blasts ev 20s (1.5sbl-1ssi-1.5sbl-16ssi). | Bell, hand, gp of 2 strokes ev 20s, if diaphone is disabled. | USCG Light List - Vol. I-VI: 5 |
| 1957 | |||
| 1959-1960 | USCG Light List - Vol. I-V: 5 | ||
| 1961 | USCG Light List - Vol. I: 5 | ||
| 1963-1966 | None | ||
| 1969 | DIAPHONE: 2 blasts ev 20s (1.5sbl-1ssi-1.5sbl-16ssi). | ||
| 1970-1972 | DIAPHONE: 2 blasts ev 20s (2sbl-2ssi-2sbl-14ssi). | ||
| 1973-1975 | HORN, 2 blasts ev 20s (2sbl-2ssi-2sbl-14ssi). | ||
| 1976-1979 | HORN: 2 blasts ev 20s (2sbl-2ssi-2sbl-14ssi). | ||
| 1982 | HORN: 2 blasts ev 20s (2s bl-2s si-2s bl-14s si). | ||
| 1987 | HORN: 2 blasts ev 20s (2s bl-2s si-2s bl-14s si). | USCG Light List - Vol. I: 30 | |
| 1990-1992 | |||
| 1993-1996 | USCG Light List - Vol. I: 35 | ||
| 2004 | None |
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1796 - Present (Exact location for current 1857 lighthouse. Locations of original 1796 and 1819 lighthouses are assumed to be close.) |