| 摘要 |
<p>The boat is for use with a free sail, with a narrow hull in evolute sections, being particularly in the form of a sailboard. It has a front stem portion of V-shape, with longitudinal convex profile, an intermediate double V-shaped one of longitudinal concave profile, and a rear portion formed by a deep lengthwise channel. The channel depth is roughly equal to the hull thickness and forms, with the intermediate portion, two parallel skids running for the greater part of the hull length.</p> |
