Sailing vessels are a type of watercraft that are propelled by wind power. Common types of sailing vessels include barks, which are large three-masted ships, barques, which are smaller three-masted ships, yachts, which are recreational vessels, sloops, which are single-masted boats with a fore-and-aft rig, yawls, which are two-masted boats with a mizzen sail, boats, which are small vessels, CUTTERS, which are single-masted vessels with two or more headsails, and schooners, which are two-masted vessels with fore-and-aft sails.