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Most of the lights in the United States have been built and maintained by the Coast Guard (since 1939) and its predecessors, the United States Lighthouse Service (1910–1939) and the United States Lighthouse Board (1852–1910).
The United States Lighthouse Society, Lighthouse Friends and the many Wikipedia pages dedicated lighthouses are a few of the many excellent resources for those interested in lighthouses. This list captures the most important historical features, that is the NHL and the often overlooked U.S. Coast Guard sites.
The United States Lighthouse Service, also known as the Bureau of Lighthouses, was the agency of the United States Government and the general lighthouse authority for the United States from the time of its creation in 1910 as the successor of the United States Lighthouse Board until 1939 when it was merged into the United States Coast Guard.
During that period, lightships were operated by several branches of the government: by the Lighthouse Establishment from 1820 to 1852, the Lighthouse Board from 1852 to 1910, the Lighthouse Service from 1910 to 1939, and the Coast Guard from 1939 to 1985. The naming conventions used for lightships are not consistent.
This is a list of all lighthouses in the U.S. state of Washington as identified by the United States Coast Guard. [1] There are eighteen active lights in the state; three are standing but inactive, three were supplanted by automated towers, and two have been completely demolished. Two lights, one of them still active, serve as museums.
But before construction began on the new structure, the original lighthouse was severely damaged by the 1918 earthquake that struck the west part of the island. [1] [5] Construction on the new lighthouse was completed in 1922. The light is active aid to navigation and is a housing facility for the United States Coast Guard. [6]
The height of existing lighthouses is expressed in two measures: the height of the tower itself, and the distance from the focal plane (that is, the center) of the light source to the water. The latter can be much greater than the former if the light stands on a promontory .
This is a list of all lighthouses in the U.S. state of Maine as identified by the United States Coast Guard. [1] There are fifty-seven active lights in the state, two of which are maintained as private aids; nine are standing but inactive, and three have been destroyed, one of which has been replaced by a skeleton tower.