摘要:
A watercraft vessel with at least one planing hull, in the form of a single unitary hull or with two or more interconnected hulls, each hull having at its bottom portion a deadrise angle in the interval 5°-70° and provided with at least one water-deflecting surface which extends rearwardly and outwardly in relation to a keel region and which is oriented and configured so as to create a lifting force, and also a forward thrust on the hull. The forward thrust is caused by a lateral spray water stream, which is redirected rearwardly by the water-deflecting surface. The latter should be located laterally outwardly of but adjacent to an approximately triangular bottom part which is submerged at the planing speed. The hull will also provide a smoother ride than conventional, planing hulls, especially in heavy sea.
摘要:
The invention is a watercraft with at least one hull which creates hydrodynamic lift by using narrowing concave channels (1) on the underside of the said at least one hull where propulsion (3) is placed such that the said propulsion draws water through the said narrowing concave channels (1).
摘要:
A displace hull with a shape that is both laterally symmetric and fore-to-aft symmetric is disclosed. The hull includes a pair of channels that help to manage a flow of water around the hull. The hull also includes sponsons and propellers that are located amidships on the port and starboard sides.
摘要:
A hull form design which incorporates "semi-sponsons" (14,15) disposed on either side of a V-shaped center hull section (13). The semi-sponsons extend the entire length of the hull form. The semi-sponsons are delimited by longitudinal steps (13') extending below the hull bottom an equal distance from the centerline on opposite sides of the hull. This design is a hybrid of conventional "V" hulls and catamarans and improves the roll and turn initiation time of convention mononhull designs.
摘要:
The present invention provides, with reference to FIG. 2, an amphibian operable in land and marine modes, the amphibian comprising a hull, at least one discontinuity (wheel bay) provided in the hull, and at least one retractable wheel or track assembly at least partially located in the at least one discontinuity (wheel bay). The hull is a planning hull, and the at least one discontinuity (wheel bay) is provided in the front half of the hull of the amphibian. The amphibian further comprises at least one conduit which opens, or is provided with an entry which opens, into or at the at least one discontinuity (wheel bay) and is configured for channeling, in use, fluid away from the at least one discontinuity (wheel bay).
摘要:
The inventive ship hull comprises at least one float (10) and a centre of buoyancy (CB) situated behind the centre of flotation (CF), the distance between said centre of buoyancy and centre of flotation is greater by 5 % than the waterline length L of the hull.
摘要:
The invention relates to a displacement body, especially a boat or a ship, comprising at least one blow device (12) for the structured placement of a gas between a displacement body and water. Said displacement body also comprises at least one catchment device (14) for at least partially reabsorbing the gas introduced by the blow device (12). The displacement body is characterised in that the catchment device (14) is arranged at a certain distance relative to the blow device (12) such that the structure of the gas introduced by the blow device (12) between the displacement body and water remains essentially the same until the reabsorbtion thereof by the catchment device (14). The invention also relates to a method for reducing friction on displacement bodies, especially on boats or ships.