USS Spinax (SS/SSR-489), a Tench-class submarine, was the only ship of the United States Navy named after the spinax, one of the spiny sharks (dogfish sharks) scientifically known as Squalidal. Her keel was laid down on 14 May 1945 by the Portsmouth Navy Yard. She was launched on 25 November 1945 sponsored by Mrs. Tom C. Clark, and commissioned on 20 September 1946 with Commander A. R. Faust in command.