Location: Straitsmouth Island, off east side of Cape
Ann; Nearest town: Rockport
42 39 42 N
70 35 18 W
MapQuest Link
The island is closed to the public; the lighthouse
is best seen by boat. It can be seen distantly from the end of
Bearskin Neck in Rockport.
Station established: 1835; Present lighthouse built:
1896; Automated: 1967
Construction material: Brick
Tower height: 37 feet; Height of focal plane: 46 feet
Earlier optics: Sixth-order Fresnel (1857)
Present optic: 250 mm (solar-powered)
- Coast Guardsman Geoffrey Mongillo
services the lamp changer in the optic at Straitsmouth Island
Light
Characteristic: Flashing green every six seconds
Fog signal: One blast every 15 seconds
Other buildings still standing: 1878 keeper's house,
oil house, cistern building
Active Coast Guard aid to navigation; island is owned
by
Massachusetts
Audubon Society
The lighthouse is owned by the Town of Rockport and is managed by the Thacher Island Association.
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