| 摘要 |
<p>The invention relates to an apparatus for directing a water flow, to be fastened at the stern of a vessel below the water surface. The invention is characterised in that the apparatus has a substantially convex upper main surface and a substantially concave lower main surface. With such an apparatus a vessel attains a more or less horizontal trim in the water, even at higher speeds. Slanting backward can be avoided almost completely. Partly thanks to this apparatus it is now possible, in particular for light displacement vessels with a V-shaped afterbody, to reach high speeds. According to a particular preferred embodiment the apparatus is characterized in that at a position near the front of the apparatus, the concave surface changes to a convex surface.</p> |
