United_States_lightship_Swiftsure_(LV-113)
United States lightship No. 113, known as Swiftsure, was a steel-hulled lightship in commission with the United States Lighthouse Service as LV-113 from 1929 to 1939, and in the fleet of the United States Coast Guard as WAL-535 from 1939 until 1968. During World War II, she was given the designation USS YP-397.