USS Shark (SS-174) was a Porpoise-class submarine, the fifth ship of the United States Navy to be named for the shark. Her keel was laid down by the Electric Boat Company in Groton, Connecticut, on 24 October 1933. She was launched on 21 May 1935 (sponsored by Miss Ruth Ellen Lonergan, 12-year-old daughter of United States Senator Augustine Lonergan of Connecticut), and commissioned on 25 January 1936, Lieutenant C.J.