USS Kuwana II (SP-594) was a United States Navy patrol vessel in commission from 1917 to 1918. Kuwana II was built as a private motorboat of the same name by the Electric Launch Company (Elco) at Bayonne, New Jersey, in 1911. In 1917, the U.S. Navy leased her from her owner, Frank E. Masland of Philadelphia, Pennsylvania, for use as a section patrol boat during World War I. The Navy took delivery of her on 2 June 1917 and she was commissioned the same day as USS Kumara II (SP-594) with a Chief Quartermaster Schofield, USNRF, in command. She was enrolled in the Naval Coast Defense Reserve on 8 June 1917.