Sailing ship
The term sailing ship is used to refer to any large wind-powered vessel. In technical terms, a ship was a sailing vessel with a specific rig of at least three masts, square rigged on all of them, making the sailing adjective redundant. In popular usage "ship" became associated with all large sailing vessels and when steam power came along the adjective became necessary. Large sailing vessels that are not ship rigged may be more appropriately called boats. [Sailing ship. Wikipedia]