DEVICE FOR REDUCING FRICTIONAL RESISTANCE OF SHIP BODY

摘要

A device for reducing frictional resistance of a ship body. The device reduces frictional resistance of the body (1) of a navigating ship by generating air bubbles from air nozzles, which are formed at a ship bottom (5), to form an air bubble layer on the ship bottom (5). The air nozzles are arranged in nozzle groups in the ship bottom (5) of the ship body (1) so as to lie in the width direction of the ship body (1). The nozzle groups are composed at least of a center air nozzle group (30a) formed on the bow side at the center of the ship bottom (5) in the width direction, and of a pair of side air nozzle groups (30b, 30b) formed at positions which are on opposite sides of the ship bottom (5) in the width direction and on the stern side of the center air nozzle group (30a). The length of the center air nozzle group (30a) in the width direction is greater than the length of each of the pair of side air nozzle groups (30b) in the width direction.