| 摘要 |
PROBLEM TO BE SOLVED: To provide a marine propulsion device that has great improvement effect by integrating the versatility and implementation cost without being affected by the size and speed of a ship, when generally examining an effect as a propulsion device from a viewpoint of an energy-saving technique of a ship, by effectively utilizing a V-shaped wave energy generated in a stern and converting it into propulsion power of a ship.SOLUTION: A marine propulsion device is characterized by: providing a horizontal fin 4 extending substantially horizontally to a steering shaft 3 of a stern; forming a leading edge of a cross section of the horizontal fin to face the lower direction slightly, and a trailing edge to face the rear substantially horizontally, which is formed in a similar shape as an airfoil cross section of an aircraft; disposing two pieces of vertical fin 5 symmetrically with respect to the steering shaft in upper and lower surfaces in the horizontal fin; and forming the leading edge of the cross section of the vertical fin to face rather outside of a ship body, and the trailing edge to face the rear of the ship body substantially in parallel, which is formed in the similar shape as the airfoil cross section of the aircraft. |
