Lady Washington is a ship name shared by at least four different 80-100 ton-class Sloop-of-war and merchant sailing vessels during two different time periods. The original sailed during the American Revolutionary War and harassed British shipping. Post war, the vessel was used as a merchant trading vessel in the Pacific. A somewhat updated modern replica was created in 1989. The replica has appeared in numerous films and television shows, standing in as other real or fictional ships.

A brig is a type of sailing vessel defined by its rig: two masts which are both square-rigged. Brigs originated in the second half of the 18th century and were a common type of smaller merchant vessel or warship from then until the latter part of the 19th century. In commercial use, they were gradually replaced by fore-and-aft rigged vessels such as schooners, as owners sought to reduce crew costs by having rigs that could be handled by fewer men. In Royal Navy use, brigs were retained for training use when the battle fleets consisted almost entirely of iron-hulled steamships.