Patent ID: 6851991
Filing Date: 2005-02-08
Classification: B63B,B63H

Abstract:
1. A surface watercraft, comprising: a hull; two propellers which, at high speeds of the watercraft, are water surface-piercing, said propellers being such that only the propeller blade or parts thereof are submerged in the water at high speeds of the watercraft; said hull having a belly and two streamlined projecting parts, said projecting parts extending in a longitudinal direction of the hull; each projecting part in terms of its outer shape, having at its aft end, an end edge which, at least in part, extends generally transversely to the longitudinal direction of the projecting part; each propeller being located immediately astern of the respective end edge and a part of each propeller, in the radial direction, extending beyond the delimiting surfaces of the respective projecting part; and said projecting parts having arranged at high speeds of the watercraft, an aft bearing area formed on each projecting part, each aft bearing area consisting of a part of the surface of the respective projecting part located immediately forward of said end edge and on the bottom of the projecting part; and a forward bearing area formed on the belly of the hull, whereby the watercraft is supported by the water flowing past the bearing areas on which forces act to lift the hull up.