| 摘要 |
A keel structure connected to the hull of a nautical vessel, such as a sailboat, is provided at least at the junction of the vessel hull and the keel with at least one channel extending substantially lengthwise of the keel for guiding the water displaced by the keel at least partially past a zone, which extends longitudinally of the hull and is aligned with the keel, without lifting it to the surface of water. |
