The USS R-1 (SS-78) was an R-class coastal and harbor defense submarine of the United States Navy. Her keel was laid down on 16 October 1917 by the Fore River Shipbuilding Company in Quincy, Massachusetts. She was launched on 24 August 1918 sponsored by Mrs. George W. Dashiell, and commissioned on 16 December 1918 at Boston, Massachusetts, with Commander Conant Taylor in command. Since it was decommissioned for a period of 9 years, asbestos may have lurked inside of it during World War II. Because it was built during the time when asbestos was a very popular material, the carcinogen may have been lurking in the wall insulation of the submarine. For this reason, we recommend veterans who served on the USS R-1 (SS-78) to undergo a periodical medical examination in order to prevent the development of a terrible disease such as lung cancer, asbestosis, or mesothelioma.