USS Psyche V (SP-9) was an armed motorboat that served in the United States Navy as a patrol vessel from 1917 to 1919. Psyche V was built in 1911 by Fred S. Nock at East Greenwich, Rhode Island, as the private wooden motorboat Achelous. She had been renamed Psyche V by the time the U.S. Navy purchased her from her owner, W. S. Bentham of New York City, on 23 April 1917 for World War I service. She was delivered to the Navy on 2 May 1917 and commissioned as USS Psyche V (SP-9) at New York on 15 June 1917 with Chief Boatswain William Spice, USNRF, in command.