The Dry Tortugas Light is a lighthouse located on Loggerhead Key, three miles west of Fort Jefferson, Florida.

Daniel Phineas Woodbury supervised construction of the lighthouse, based on an 1855 design by Capt.

[2] A civilian prisoner of Fort Jefferson, John W. Adare and a companion, used planks to swim to the Key and stole the keeper's boat.

Undeterred, Adare attempted a second escape, one in which he needed a second plank for his ankle ball and chain.

[8] The Dry Tortugas Light received an electric lamp in 1931, becoming the most powerful lighthouse in America, with three million candela.

In later years, before the light was automated, the lighthouse was manned by Coast Guardsmen who rotated on and off the island every few days.