| 摘要 |
<p>A wind propulsion system, useful in providing auxiliary power to save fuel and comprising a mast 4 and a sail 1, is provided. The sail is attached by four attachments 3, 7, 10 respectively to the mast, to the port and starboard sides of the boat and to the prow 5 of the boat, so that the sail when filled with wind provides a lifting as well as a forward force, to stabilize the boat. The sail has openings 12 which deflect the wind downwardly, increasing the lifting force. <IMAGE></p> |
