FIELD: transportation.
SUBSTANCE: water-displacing vessel with air cavity on the bottom is offered which contains the groove in the latter which is limited by fore step, rolling keels and aft inclined plate, comprising the cavity formation system consisting of the source of compulsory air supply and the system of air paths. Air paths are made in the cross section in the form of trapeze the inclined parts of which are fitted with holes with the step t>=0.1 B, where B is the housing width, providing cross air supply from the source into the groove cavity for creation of continuous air cavity.
EFFECT: improvement of reliability of air cavity formation system and more efficient decrease of hydrodynamic resistance to the vessel movement.
11 cl, 4 dwg
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