SHIP EQUIPPED WITH BUBBLE TYPE RESISTANCE REDUCTION DEVICE AND RESISTANCE REDUCTION METHOD OF SHIP

摘要

PROBLEM TO BE SOLVED: To provide a ship equipped with a bubble type resistance reduction device in which a bubble or a gas-liquid mixed fluid is supplied from a bubble supply hole provided on a hull and the bubble is introduced into a ship bottom part to reduce frictional resistance of the hull and which can efficiently introduce the bubble supplied from the bubble supply hole into a ship bottom flat part so that a bubble supply energy can be decreased to reduce a ship resistance, and a resistance reduction method of the ship.SOLUTION: A stem bulb 3 provided at a bow part is formed of a downflow facilitation type stem bulb which improves the effect to introduce stream current at the bow part into a ship bottom part. A top end position Pb of a ship bottom flat part 2f is arranged at a position away backward by 0.7% of a length between perpendiculars from a forward perpendicular F.P. or more, and at a position away backward by 5% of the length between perpendiculars from the forward perpendicular F.P. or less.