USS Threadfin (SS-410)

USS Threadfin (SS-410)

USS Threadfin (SS-410), a Balao-class submarine, was the only ship of the United States Navy to be named for the threadfin, any of a family of fishes related to the mullets and distinguished by filamentous rays on the lower part of the pectoral fin.

Threadfin was laid down on 18 March 1944 at the Portsmouth Navy Yard in Kittery, Maine. She was launched on 26 June 1944 sponsored by Mrs. Frank G. Fox, and commissioned on 30 August 1944 with Commander John J. Foote in command.

Training and trials out of Portsmouth followed her final completion late in September. After transiting the Panama Canal in mid-November, the submarine reached Pearl Harbor early in December and conducted intensive training in preparation for her first war patrol.