USS Grampus (SS-523)
 USS Grampus (SS-523) a Tench-class submarine was the seventh ship of the United States Navy to be named for two members of the dolphin family (Delphinidae): Grampus griseus also known as Risso's dolphin and orca also known as the Killer Whale. Her keel was laid down on 8 February 1944 at Boston Navy Yard. She was launched on 16 December 1944 but World War II ended before she was completed and she sat idle until construction resumed in 1948.