DEVICE FOR REDUCING FRICTIONAL RESISTANCE OF SHIP BODY

摘要

In a ship-body frictional resistance reducing device for reducing frictional resistance of a sailing ship body 1 by forming an air bubble curtain on a ship's bottom 5 by generating air bubbles from a plurality of air ejection holes formed on the ship's bottom 5, the air ejection holes are arranged in a ship width direction to constitute an air-ejection hole group, and a plurality of air ejection holes groups of the same type as the air-ejection hole group is formed on the ship's bottom 5. The air-ejection hole groups include at least a center air-ejection hole group 30a formed at the center of the ship width direction at a bow side and a pair of side air-ejection hole groups 30b and 30b formed at a stern side from the center air-ejection hole group 30a at both sides of the center air-ejection hole group 30a in the ship width direction. A length of the center air-ejection hole group 30a in the ship width direction is formed to be longer than a length of the side air-ejection hole group 30b in the ship width direction.