USS Lancetfish (SS-296), a Balao-class submarine, was the only ship of the United States Navy to be named for the lancetfish (Alepisaurus ferox), a large voracious, deep sea fish having long lancetlike teeth and a high long dorsal fin. Her keel was laid down on 30 September 1942 by Cramp Shipbuilding Company of Philadelphia, Pennsylvania. She was launched on 15 August 1943 sponsored by Miss Beatrice P. Barker, towed to Boston Navy Yard 19 May 1944 for completion, and commissioned 12 February 1945 with Commander Ellis Burton Orr in command.