Abstract: An aqua-planing vehicle has freely rotatable buoyant wheels at both sides of the front and rear ends of a rectangular base frame so that the watercraft can float on a lake or ocean surface. The watercraft propelling member such as a screw is driven by a power source such as an engine mounted on the frame so that the aqua-planing vehicle can plane on the water surface at high speed. Wing members are arranged aslant above the frame such that they receive air on their undersides during travel of the watercraft so that the craft is endowed with buoyancy by virtue of air resistance, to thereby reduce water resistance and allow smooth and high-speed planing of the watercraft on the water surface. Provided aslant below the frame are high-glide impellers arranged such that they can be pushed down by an operating pedal.