Patent ID: 9428248
Filing Date: 2016-08-30
CPC Classification: B63B,B63H,Y02T

Claim Text:
1. A boat comprising a hull ( 10 ) and a propulsion means ( 3 ) suitably coupled to an inboard drive means ( 8 ), wherein said hull ( 10 ) is provided with at least one hollow ( 2 ), said hollow ( 2 ) having an opening below the waterline height ( 6 ) of the hull and below the bottom of the keel of the hull ( 10 ), said hollow ( 2 ) is further suitably shaped to at least partially accommodate said propulsion means ( 3 ) and is provided with at least one atmospheric-pressure air intake ( 220 ), characterized in that the Venturi effect generated within said housing hollow ( 2 ) while the boat is advancing is exploited to automatically remove water from said housing hollow ( 2 ) in order to bring water to a level flush with the fluid streamlines passing along the bottom of the keel because the depression formed within the hollow ( 2 ) by the flowing-out water is counterbalanced by the air flowing through the tube ( 21 ) or by the exhaust gas controllably supplied in loop through the tube ( 82 ).