Ten Pound Island Lighthouse
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Location: Gloucester Harbor
Coordinates: 42 36 06 N 70 39 54 W
Active U.S. Coast Guard aid to navigation; grounds managed by the City of Gloucester.
Accessibility: The island is open to private boaters, but there is no landing facility except a small sandy beach. The lighthouse is not open to the public and is best seen by boat.
Station established: 1821
Present lighthouse built: 1881
Construction material: Cast iron with brick lining
Other buildings still standing: Oil house
Height of tower: 30 feet
Height of focal plane: 57 feet
Earlier optic: Fifth-order Fresnel
Present optic: 250 mm
Characteristic: Three seconds red alternating with three seconds darkness
Fog signal: Two blasts every 20 seconds