Location: Narragansett Bay, west of entrance to Mount
Hope Bay
Nearest town: Portsmouth
41 37 56 N
71 16 24 W
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Accessibility: This lighthouse is not open to the
public and is best seen by boat.
The Prudence Island ferry from Bristol
passes fairly close by.
Station established: 1886 (lightship)
Present lighthouse built: 1901; Automated: 1964
Construction material: Cast iron
Height of tower: 60 feet; Height of focal plane: 54
feet
Original optic: Fifth order Fresnel; Present optic:
250 mm
Characteristic: Three seconds white alternating with
three seconds darkness
Fog signal: Two blasts every 30 seconds
The structure is privately owned; the light is an
active U.S. Coast Guard aid to navigation
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