Block Island Southeast Light

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Block Island Southeast Light
Lighthouse on Block Island, RI 02.jpg
Block Island Southeast Light is located in Rhode Island
Block Island Southeast Light
Location South East Light Road, New Shoreham, Rhode Island
Coordinates 41°9′12.3″N 71°33′7.7″W / 41.153417°N 71.552139°W / 41.153417; -71.552139Coordinates: 41°9′12.3″N 71°33′7.7″W / 41.153417°N 71.552139°W / 41.153417; -71.552139
Year first constructed 1875
Year first lit 1875
Automated 1990
Deactivated 1990-1994
Foundation Granite / Concrete / Brick
Construction Red brick
Tower shape Octagonal pyramidal tower attached to dwelling
Markings / pattern Natural with black lantern
Height 52 feet (16 m)
Focal height 261 feet (80 m)
Original lens 1st order Fresnel lens (1875)
Current lens 1st order Fresnel lens from Cape Lookout Light
Range 20 nautical miles (37 km; 23 mi)
Characteristic Fl Green 5 sec
Fog signal Horn, 1 every 30 sec
Admiralty number J0650
ARLHS number USA-062
USCG number

1-640 [1] [2] [3]

Block Island South East Light
Block Island Southeast Light USCG.JPG
Architect US Light House Board; Tynan, T.H.
Architectural style Gothic
Governing body Private
NRHP Reference # 90001131 (NRHP)
97001264 (NHL)[4]
Significant dates
Added to NRHP August 6, 1990[4]
Designated NHL September 24, 1997[5]

Block Island Southeast Light is a lighthouse located on Mohegan Bluffs at the southeastern corner of Block Island, Rhode Island. It was designated a U.S. National Historic Landmark in 1997.[5][6]


Although Congress appropriated $9,000 to build this light in 1856, the funds were used to build a new Block Island North Light after the old one was washed away in a storm. This light was finally built in 1875. The original optic was a first order Fresnel lens standing about 12 feet (3.7 m) tall with four circular wicks burning whale oil. The whale oil was replaced by kerosene in 1880 and the lens was modified to rotate floating in a pool of mercury, driven by a clock whose weights had to be rewound every four hours.

In 1990, the Coast Guard deactivated the light and replaced it with a nearby steel tower. Because of ongoing erosion of the bluffs, in 1993 the entire 2,000 ton structure was moved about 300 feet (91 m) back from the cliffs. After the move, the Coast Guard decided not to reinstall the mercury float lens, but instead installed the first order lens from Cape Lookout Lighthouse.[1]


The lighthouse has a museum displaying the original Fresnel lens.[1] The museum is open during the summer season,[7] provides tours of the light tower, and has a small gift shop.

See also[edit]


  1. ^ a b c "Historic Light Station Information and Photography: Rhode Island". United States Coast Guard Historian's Office. 
  2. ^ Light List, Volume I, Atlantic Coast, St. Croix River, Maine to Shrewsbury River, New Jersey (PDF). Light List. United States Coast Guard. 2013. p. 7. 
  3. ^ Rowlett, Russ (2013-04-08). "Lighthouses of Rhode Island". The Lighthouse Directory. University of North Carolina at Chapel Hill. 
  4. ^ a b "National Register Information System". National Register of Historic Places. National Park Service. 2007-01-23. 
  5. ^ a b "Block Island South East Light". National Historic Landmark summary listing. National Park Service. Retrieved 2008-05-04. 
  6. ^ Andrea E. Reynolds. "Block Island South East Lighthouse National Historic Landmark Study". National Park Service. Retrieved 2007-10-22. 
  7. ^ Daytripper's Guide: Block Island; University of Rhode Island Sea Grant; retrieved on October 22, 2007

External links[edit]