Sail board or small yacht - has winged hull with tip ailerons and floats out of water when sailing and mast inclined rearwards in pivoted tubes

摘要

The aerodynamic hull (1) has twin wings and a deeper centre section, like a sail board, arrow shaped (6), with the rear cut square. The mast (3) is inclined towards the rear and overall weight is not over 30 kg. The rear outer hull wings (4) may end as ailerons or elevators, inclined upwards, with float (5) sections inboard. The floats may be above the floatation line, with hull horizontal, above water under sail. The sail may be slatted, its mast inclined back 10 to 45 degrees, held in two tubes (7) pivoting on the mast (8) and hull. ADVANTAGE - The hull aerodynamic form induces planing continuously, at lower speeds and winds than heavier craft.