USS Dolphin (PG-24)—a gunboat/dispatch vessel—was the fourth ship of the United States Navy to be named for the dolphin. Dolphin's keel was laid down by John Roach & Sons of Chester, Pennsylvania. She was launched on 12 April 1884, with Captain George Dewey in command, and commissioned on 8 December 1885 with Captain R. W. Meade in command. Dolphin was the first Navy ship to fly the Flag of the President of the United States during President Chester A. Arthur's administration. She was, in fact, the second Navy ship to serve as a Presidential Yacht.