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2. VRB-25 - Wikipedia

   en.wikipedia.org/wiki/VRB-25

   In at least one case, a VLB-44 was removed and returned to a VRB-25 in 2022 at Whaleback Light to maintain the rotating light signature. [ 7 ] From the first use of lighthouses with flashing lights, the light source has been continuous, because turning a flame on and off is impractical and flashing an incandescent electric lamp reduces its life ...

3. Dry Tortugas Light - Wikipedia

   en.wikipedia.org/wiki/Dry_Tortugas_Light

   After several proposals for a new lighthouse on the "outer shoals" of the Dry Tortugas, a new lighthouse was built on Loggerhead Key and completed in 1858 at a cost of US$35,000 ($1.23 million in 2023), which was the amount that had been projected to upgrade the existing lighthouse on Garden Key. [8] The Dry Tortugas lighthouse, along with the ...

4. American Shoal Light - Wikipedia

   en.wikipedia.org/wiki/American_Shoal_Light

   The light was automated in 1963, and a fourth-order lens with solar-powered light was installed, the current (non-operational) light is a VRB-25 aerobeacon. The light had a nominal range of 14 nautical miles (26 km; 16 mi) in the white sectors, and 10 nautical miles (19 km; 12 mi) in the red sectors.

5. Point Stephens Light - Wikipedia

   en.wikipedia.org/wiki/Point_Stephens_Light

   In 1973, the lighthouse keeper was replaced by automated system powered by solar. [9] There three lighthouse families living there were two month supply of food and barge called Bomb Snow in case they would cut off due to rough seas. [9] In 1990, b following a 1989 failure of the submarine cable and problems with the diesel generator, the light ...

6. Matagorda Island Light - Wikipedia

   en.wikipedia.org/wiki/Matagorda_Island_Light

   The new 55 feet (17 m) cast iron lighthouse became functional on December 21, 1852. Gulf storms and subsequent beach erosion caused the lighthouse to be rebuilt on higher ground. The light tower was raised 24 feet (7.3 m) in 1857 to enable the beam to be seen from a greater distance. A new lens was installed in 1859. [3]

7. Isle au Haut Light - Wikipedia

   en.wikipedia.org/wiki/Isle_Au_Haut_Light

   The lighthouse remains in service as of 2008. The current optic for the light is a 9.8 inches (250 mm) solar-powered lens which flashes red every four seconds with a white sector covering the safe channel. The original fourth order Fresnel lens is at the Maine Lighthouse Museum in Rockland, Maine. [3]