Sparkplug lighthouse

In American usage, a sparkplug lighthouse, sometimes known as a bug light, is a type of caisson lighthouse so named because of its shape. Generally speaking, a sparkplug lighthouse consists of a three-story living area, with the lantern on top; the whole is then placed upon a concrete or metal caisson. The superstructure was usually prefabricated and then lifted onto the caisson by crane. The classic sparkplug light sits in open water, with only the caisson below it and no dry land, but the term is also applied to lights on land or pierheads that are constructed in the same fashion.

Gallery

Wikimedia Commons has media related to Sparkplug lighthouses.
Butler Flats Light
stands in open water about 15 feet (4.6 m) deep, about 1,800 feet (550 m) from land
 
Greens Ledge Light
stands in open water about 10 feet (3.0 m) deep, about 1 km from land
 
Sakonnet Light
is on a small rock
 
Saybrook Breakwater Light
is at the end of a breakwater
 

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This article is issued from Wikipedia - version of the Monday, December 08, 2014. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.