The 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's Fore River Shipyard in Quincy, Massachusetts. She was launched on 31 March 1923 sponsored by Mrs. John H. Brown, and commissioned on 31 December 1924 with Lieutenant Clinton E. Braine, Jr., in command. It was decommissioned in 1945 and later sold for scrap. Asbestos was a popular material within shipyards during the middle of the 20th century.
Prior to 1980, asbestos was incorporated into nearly every aspect of shipbuilding. If you worked in the U.S. Navy from the 1930s to the early 1980s and participated in duties such as the construction, overhaul, or repair of the ships, you were likely exposed to asbestos and need to watch out for asbestos-related symptoms that usually manifest themselves decades after the initial exposure.