Patrol Air Cushion Vehicle
 The Patrol Air Cushion Vehicle (PACV) was a United States Navy river patrol hovercraft used during the Vietnam War.The PACV was based on Bell Aerosystems Bell SK-5 hovercraft; a licensed version of the British Saunders-Roe (later British Hovercraft Corporation) SR.N5 hovercraft. The SK-5 was adapted for American military use in 1965. Three were purchased by the U.S. Navy for operations in the emerging Vietnam War.