USS Halibut (SS-232), a Gato-class submarine, was the first ship of the United States Navy to be named for the halibut, a large species of flatfish.
Halibut on the Piscataqua River at Portsmouth Navy Yard, Kittery, Maine, on 3 December 1941, just after her launching. She is dressed overall.
The Gato class of submarines were built for the United States Navy and launched in 1941–1943. Named after the lead ship of the class, USS Gato, they were the first mass-production U.S. submarine class of World War II.
USS Gato off Mare Island Navy Yard, on 29 November 1944
General Motors Cleveland Model 16-248 diesel engine
Fairbanks-Morse Model 38D8⅛ diesel engine
Periscope photograph of Japanese merchant ship sinking