Patent ID: 8424475
Filing Date: 2013-04-23
Classification: B63B,Y02T

Abstract:
1. A frictional resistance reduced ship comprising: a ship body having a ship bottom with an outer plate; an air ejecting outlet disposed in said ship bottom; air recovery inlets disposed in said ship bottom; an air ejecting unit configured to eject air into water from said air ejecting outlet; an air recovery device configured to recover the air into said ship body from said air recovery inlets; and bottom plates having said air recovery inlets formed thereon, and being disposed flush with the outer plate of the ship bottom, wherein said air recovery inlets are arranged on a stern side relative to said air ejecting outlet and on a bow side relative to a propeller provided to said ship body, wherein said air recovery inlets comprise a central air recovery inlet crossing a center line of said ship body; a port-side air recovery inlet disposed not on the center line but on a port side so that said port-side air recovery inlet projects on the port side from said central air recovery inlet; and a starboard-side air recovery inlet disposed not on the center line but on a starboard side so that said starboard-side air recovery inlet projects on the starboard side from said central air recovery inlet, wherein said port-side air recovery inlet and said starboard-side air recovery inlet are arranged on the bow side relative to said central air recovery inlet, and wherein each of said central air recovery inlet, said port-side air recovery inlet, and said starboard-side air recovery inlet comprises a plurality of air recovery holes.