| 摘要 |
<p>The invention relates to a lifting keel mechanism for sailing boats. The method comprises the steps of manufacturing a casing for the lifting keel, fitting the keel blade to the casing, fitting the keel casing to the ship's hull and laminating the casing to the ship's hull. It also comprises the steps of levelling the keel plate contact surface on the ship's hull and assembling the keel blade and ballast. It also relates to the functioning of the top and bottom locking pins and fitting the bracket for the hydraulic cylinder.</p> |
