Thacher Island (Massachusetts)

Historical Light List Characteristics

1839 F W. W27. USLHE Light List (US): 34
1849 F W. W21. USLHE Light List (US): 37
1858 F W. W16. LHB Light List (US): 56
1860 LHB Light List (US): 49
1865-1866 F W. W20. LHB Light List (All Coasts): 49
1868
1870 LHB Light List (All Coasts): 52
1878-1879 LHB Light List (All Coasts): 64
1886 F W. W19.
1888 LHB Light List (All Coasts): 66
1893 LHB Light List (Atlantic): 74
1898 LHB Light List (Atlantic): 85
1899 LHB Light List (Atlantic): 87
1905 LHB Light List (Atlantic): 90
1908 LHB Light List (Atlantic): 93
1915 USLHS Light List (Atlantic): 107
1917 USLHS Light List (Atlantic): 114
1920
1927 USLHS Light List (Atlantic): 119
1931 USLHS Light List (Atlantic): 121
1990-1992 F Y. USCG Light List - Vol. I: 282
1993-1996 USCG Light List - Vol. I: 305
2004

Historical Light List Optics and Structures

1839 15 Lamps / 15" Refl. 37 90 N/A USLHE Light List (US): 34
1849 11 Lamps / 21" Refl. USLHE Light List (US): 37
1858 45 98 Stone tower. The towers are 895 feet apart, ranging N. by E. 3/4 E. and S. by W. 3/4 W. LHB Light List (US): 56
1860 LHB Light List (US): 49
1865-1866 1st 1121/2 1651/2 Stone tower, grey color; workrooms and covered walks painted stone color. North keeper's house, white frame; south brick. Lantern and parapet railings of tower painted red. The towers are 895 feet apart, ranging N. by E. 3/4 E. and S. by W. 3/4 W. [Shared structures between towers.] LHB Light List (All Coasts): 49
1868
1870 LHB Light List (All Coasts): 52
1878-1879 Stone tower, gray color. Work-rooms and covered walks painted stone color. A one and a half story house, painted drab, stands west of the brick house. North keeper's house, white frame; south, brick; lantern painted black. The towers are 895 feet apart, ranging N. by E. 3/4 E. and S. by W. 3/4 W. [Shared structures between towers.] LHB Light List (All Coasts): 64
1886 Gray-stone tower, 895 feet apart [from other tower], ranging N. by E. 3/4 E. and S. by W. 3/4 W. Work-rooms, stone-color; covered walks and northern dwelling, white; southern, brick-color ; lantern, black. A drab house stands W. of the brick dwelling. Fog-signal house, white. [Shared structures between towers.]
1888 Gray-stone tower, 895 feet apart [from other tower], ranging N. by E. 3/4 E. and S. by W. 3/4 W. Work-rooms, stone-color; covered walks and northern dwelling, white; one southern dwelling brick-color and one white; lantern, black. A drab house stands W. of the brick dwelling. Brick fog-signal house nearly easterly shore of island. [Shared structures between towers.] LHB Light List (All Coasts): 66
1893 1613/4 Gray-stone tower. Workrooms, stone-color; covered walks and northern dwelling, white; one southern dwelling, brick-color and one white. A drab house stands W. of the brick dwelling. Brick fog-signal house nearly easterly shore of island, and red-brick oil house about midway between towers. [Shared structures between towers.] LHB Light List (Atlantic): 74
1898 Gray-stone tower; lantern, black. Workrooms, stone-color; covered walks and northern dwelling, white; one southern dwelling, red brick and one white. A drab house stands W. of the brick dwelling. Brick fog-signal house nearly easterly shore of island, and white oil house about midway between towers. [Shared structures between towers.] LHB Light List (Atlantic): 85
1899 Gray-stone tower; lantern, black. Workrooms, stone-color; covered walks and northern dwelling, white; one southern dwelling, light drab, and one white. Brick fog-signal house nearly easterly shore of island, and white oil house about midway between towers. (Shared structures between towers.) LHB Light List (Atlantic): 87
1905 Gray-stone tower; lantern, black. Workrooms, stone-color; covered walks and northern dwelling, white; one southerly dwelling, light drab, and one white. Brick fog-signal house near easterly shore of island, and white oil house about midway between towers. Two white signal masts, with small buildings, on southerly end of island. [Shared structures between towers.] LHB Light List (Atlantic): 90
1908 Gray-stone tower; black lantern; workrooms, stone-color; covered walks and N'ly dwelling, white; one S'ly dwelling, light drab, and one white; brick fog-signal house near E'ly shore of island, and white oilhouse about midway between towers. [Shared structures between towers.] LHB Light List (Atlantic): 93
1915 N/A 124 162 Gray-stone tower. USLHS Light List (Atlantic): 107
1917 USLHS Light List (Atlantic): 114
1920
1927 USLHS Light List (Atlantic): 119
1931 1 iov Gray stone tower. USLHS Light List (Atlantic): 121
1990-1992 N/A N/A N/A Grey granite conical tower. USCG Light List - Vol. I: 282
1993-1996 Gray granite conical tower. USCG Light List - Vol. I: 305
2004

Historical Light List Audible Fog Signals

1858 None None LHB Light List (US): 56
1860 LHB Light List (US): 49
1865-1866 Fog-signal, a whistle [shared] sounded by a caloric engine, sounded three times in every minute, and interval between each blast fourteen seconds. LHB Light List (All Coasts): 49
1868 Fog-signal, a whistle [shared] sounded by a caloric engine once in every minute, and interval between the blasts fifty-six seconds.
1870 A trumpet [shared] 15 feet in length, operated by a 32-inch hot-air engine, giving blasts of 7 seconds duration, at intervals of 43 seconds. LHB Light List (All Coasts): 52
1878 A 10-inch steam-whistle [shared], in duplicate, giving each minute a blast of 8 and a blast of 4 seconds, with alternate intervals of 4 and 44 seconds. LHB Light List (All Coasts): 64
1879 A trumpet [shared] 15 feet in length, operated by a 32-inch hot-air engine, giving blasts of 7 seconds duration, at intervals of 43 seconds.
1886 10-inch steam-whistle [shared]; blasts of 8 and 4 sec., with alternate intervals of 4 and 44 sec.
1888 LHB Light List (All Coasts): 66
1893 10-inch steam-whistle [shared]; blasts of 8 and 4 sec., alternate silent intervals of 4 and 44 sec. LHB Light List (Atlantic): 74
1898 10-inch steam whistle [shared]; alternate blasts of 8 and 4 sec.; alternate silent intervals of 4 and 44 sec. LHB Light List (Atlantic): 85
1899 10-inch steam whistle (shared); alternate blasts of 8 and 4 sec.; alternate silent intervals of 4 and 44 sec. LHB Light List (Atlantic): 87
1905 10-inch steam whistle [shared]; alternate blasts of 8 and 4 sec.; alternate silent intervals of 4 and 44 sec. LHB Light List (Atlantic): 90
1908 LHB Light List (Atlantic): 93
1915 10-inch steam whistle [shared]; gp. 2 unequal blasts every 60 sec.: 1st blast 8 sec., silent 4 sec., 2d blast 4 sec., silent 44 sec. USLHS Light List (Atlantic): 107
1917 Air diaphone [shared]; gp. 3 blasts every 60 sec.: 1st blast 3 sec., silent 3 sec., 2d blast 3 sec., silent 3 sec., 3d blast 3 sec., silent 45 sec. USLHS Light List (Atlantic): 114
1920 Air diaphone [shared]; gp. 3 blasts every 60 sec.: blasts each 3 sec. duration, silent 45 sec.
1927 Air diaphone [shared]; gp. 3 blasts every 60 sec.: 1st blast 3 sec., silent 3 sec., 2d blast 3 sec., silent 3 sec., 3d blast 3 sec., silent 45 sec. USLHS Light List (Atlantic): 119
1931 DIAPHONE, air [shared]; gp. 3 blasts every 60 sec.: 3 blasts 3 sec. each, 2 silences 3 sec. each, 1 silence 45 sec. USLHS Light List (Atlantic): 121
1990-1992 None USCG Light List - Vol. I: 282
1993-1996 USCG Light List - Vol. I: 305
2004
1771 - Present (Exact location of current 1861 lighthouse. Location of original 1771 lighthouse assumed to be close.)