HMS Swift was a 14-gun Swan-class ship-sloop, launched on 1 January 1777. She was commissioned that month under Lieutenant George Keppel and sailed for North America on 27 March. Command later passed to Thomas Lennox Frederick, who captained her in operations on the Delaware River. On 22 November 1778, she was in pursuit of an American privateer, Rattlesnake, off Cape Henry in Chesapeake Bay. During the action Swift grounded on Middle Ground and she was burnt by her crew to prevent her from falling into enemy hands. Rattlesnake was wrecked also.[1] [2]