The USS Swordfish (SS-193) was a Sargo-class submarine commissioned by the United States Navy in July 1939. Constructed at Mare Island Navy Yard in Vallejo, California, her keel was laid on 27 October 1937, and she was launched on 3 April 1939. The vessel was sponsored by Miss Louise Shaw Hepburn and commissioned under the command of Lieutenant Chester C. Smith. Physically, she was a typical Sargo-class submarine, designed for extended underwater operations. Her service history began with operations out of San Diego, California, before moving to Pearl Harbor in 1941. Swordfish became notable during World War II as the first American submarine to sink a Japanese ship, accomplishing this on her first war patrol in December 1941 by damaging several vessels and sinking the cargo ship Atsutasan Maru off Hainan, China. Throughout her wartime service, she conducted numerous patrols across the Pacific, including in the Celebes Sea, the Philippines, the South China Sea, and around the Mariana and Bonin Islands. Her combat record includes sinking multiple enemy vessels, such as the cargo ship Myoken Maru, transport ships Tatsufuku Maru and Burma Maru, and the Japanese destroyer Matsukaze. She also damaged several other ships and was involved in multiple friendly fire incidents, including attacks by U.S. aircraft that caused damage but no casualties. Swordfish’s patrols often involved high risk, including surviving heavy depth charges and near-misses from enemy forces. Her final patrol began in January 1945, with orders to operate near Okinawa. She was reported missing after her arrival, and her loss is attributed either to possible depth charge attack or a mine, with Japanese records not confirming her sinking. She was presumed lost in February 1945, with her crew including notable individuals such as Lieutenant Commander John Briscoe Pye. A memorial in St. Paul, Minnesota, commemorates her crew and service. The USS Swordfish remains a significant vessel for her pioneering combat achievements and her role in early WWII submarine warfare.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.