The three-masted square-rigged ship London was built at New York in 1770 or 1771 for English owners. With so much good, close-grain wood at hand in the colonies, colonial shipbuilding prospered, and American ships sold well overseas.
Measuring 92½ feet long by 26½ feet in beam, the vessel was known as a well-built, fast-sailing merchant vessel with good cargo capacity for its size. In 1776, it was purchased by the British Royal Navy as an armed ship, renamed the Grasshopper and used as a convoy escort protecting groups of British ships against their enemies.