HMS Greyhound was a 20-gun sixth-rate ship of the Royal Navy, built in 1740-41 according to the 1733 modifications of the 1719 Establishment, and in service in the West Indies, the Americas and the Caribbean. After extensive service including the single-handed capture of two other ships of equivalent size and armament, Greyhound was driven ashore in the River Thames at Erith, Kent in January 1768.[1] She was consequently declared unseaworthy and sold out of service three months later.[2]