High Quality Content by WIKIPEDIA articles! USS S-43 (SS-154) was a third-group (S-42) S-class submarine of the United States Navy. Her keel was laid down on 13 December 1920 by the Bethlehem Shipbuilding Corporation in Quincy, Massachusetts. She was launched on 31 March 1923 sponsored by Mrs. John H. Brown, and commissioned on 31 December 1924 with Lieutenant C. E. Braine, Jr., in command.