FIELD: machine engineering. SUBSTANCE: skis have two rafts movable connected by position stabilizer. The rafts are made in form of frame. Each raft has area for operator's leg and propulsive device in form of propeller. The skis also have water wheel or fin driven by mechanical transmission. Frame is equipped with multiple-arm lever installed on the transverse axle for oscillation in vertical plain. Area for operator's leg is positioned on one of the lever's arm. The lever is connected with mechanical transmission by means of the other arm or arms. Position stabilizer is made in form of joint of the lever's arms of the rafters. Axes of the joints are parallel to the transverse axes of the frames. EFFECT: enhanced buoyancy. 7 dwg
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