USS Prowess (AM-280)
 USS Prowess (AM-280) was an Admirable-class minesweeper built for the United States Navy during World War II. At war's end she was placed in reserve. In the mid-1960s she was converted into a training ship for U.S. Naval Reserve personnel. She was transferred to South Vietnam in June 1970 as RVNS Ha Hoi (HQ-13) in the Republic of Vietnam Navy. In 1975 Ha Hoi was seized by North Vietnamese forces and incorporated into the Vietnamese People's Navy.