Lost on 28 MAR 1945 with the loss of 89 officers and men on her twelfth war patrol.
She was lost during a combined attack by Japanese antisubmarine vessels and aircraft. Postwar Japanese records showed a Japanese aircraft detected and bombed a submarine. Surface ships were then guided to the spot and delivered an intensive depth charging. After two hours, a large oil slick appeared.
USS TRIGGER ranked seventh in total tonnage sunk and tied for eighth in number of ships sunk.