Derby Wharf Light

Lighthouse

42°30′59.6″N 70°53′0.9″W / 42.516556°N 70.883583°W / 42.516556; -70.883583TowerConstructed1871ConstructionBrickAutomated1970sHeight4 m (13 ft)

ShapeSquareMarkingsWhite BlackHeritageNational Register of Historic Places listed place

Fog signalnoneLightFirst lit1871Deactivated1977–1983Focal height25 feet (7.6 m)Lens5th order Fresnel lens 1871-1906
4th order 1906-1910
6th order 1910-1970s
Solar-powered optic (current)Range4 nautical miles (7.4 km; 4.6 mi)CharacteristicFl R 6sec

Derby Wharf Light Station

U.S. National Register of Historic Places

MPSLighthouses of Massachusetts TRNRHP reference No.87001466^[1]Added to NRHPJune 15, 1987

Derby Wharf Light Station is a historic lighthouse on Derby Wharf in Salem, Massachusetts that is within the Salem Maritime National Historic Site.^[2]^[3]

It was built in 1871 and added to the National Register of Historic Places in 1987.^[3]^[1] The United States Coast Guard Light List^[2] description is "White square tower. Maintained by the U.S. Park Service". The actual light is 25 feet (7.6 m) above Mean High Water. Its red light is visible for 4 nautical miles (7.4 km; 4.6 mi).

History

The Light Station was originally built in 1871 and used an oil lamp shining through a Fresnel lense. For many years, Derby Wharf Light had one of only 17 sixth-order Fresnel lenses in the United States. Today, the light is solar powered, and the light is a red flash every six seconds.

References

^ ^a ^b "National Register Information System". National Register of Historic Places. National Park Service. April 15, 2008.
^ ^a ^b Light List, Volume I, Atlantic Coast, St. Croix River, Maine to Shrewsbury River, New Jersey (PDF). Light List. United States Coast Guard. 2010. p. 83.
^ ^a ^b "Historic Light Station Information and Photography: Massachusetts". United States Coast Guard Historian's Office. Archived from the original on 2017-05-01.

Wikimedia Commons has media related to Derby Wharf Lighthouse.

U.S. National Register of Historic Places in Massachusetts

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