| 摘要 |
A boat hull represented in a high speed attitude relative to a water surface-has a generally monohull section. A forward keel portion is flattened to form a plank-like planing surface having a replaceable shoe including stability extensions. Main bodies of sponsons are configured with air dams or spray walls. The sponsons define outer walls of side tunnels. The hull form, inboard of the side tunnels, provides side planing surfaces that step down transversely to the keel planing surface. Front and rear portions of the sponsons are connected by the air dam or spray walls and bound side tunnels having side planks or planing surfaces disposed at their inner edge. A step in the keel is provided to define a tunnel disposed between two downwardly depending side walls. Across afterplanes an integrated undersurface has an outboard motor insertion space with a continuation of the recess upper surface and provides a lateral boundary of a space. In use at speed, the planing surface supporting a bulk of a weight of the vessel includes a region including elements of the keel planing surface, portions of the main hull and side planing surfaces, with additional support and lift being generated by outer sponson contact areas.
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