Disclosed is a wind-propelled ship to improve fuel efficiency by generating propulsion using wind to be used for auxiliary power as an airfoil functioning as a sail is installed on a large ship such as a cargo ship. The wind-propelled ship according to the present invention includes a streamlined airfoil installed on a deck of the ship to generate the propulsion of the ship using wind power; and a first driving source for rotating the airfoil in the horizontal direction according to the direction of wind. A movement and separation preventing plate is protruding vertically from the surface of the airfoil at the end of the airfoil.
