Title:
FRICTION REDUCING BOAT
Document Type and Number:
Japanese Patent JPH1159561
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To reduce friction of a hull regardless of blown air quantity by arranging laminar projecting parts projecting from a hull outside plating on a hull and locating gas nozzles at the top part of the laminar projecting parts. SOLUTION: Laminar projecting parts 14 are arranged at both the side parts of a spherical bow of a hull. In the laminar projecting parts 14, gas nozzles 13 are located at the top part 14a of the laminar projecting parts 14 in a state that the laminar projecting parts 14 are projected from a hull outside plating P and gas supply means 20 are arranged in the gas nozzles 13. The gas supply means 20 drive a blower 21 by the driving part 22, feeds air sucked from an air inlet, raises pressure at the inside of an air chamber 23 and opens a check valve 25. By jetting air fed via a piping 24 from the gas nozzles 13 in this state, microbubble is formed. A submerged surface 12 of the hull outside plating P at the spherical bow is covered with this microbubble.
Inventors:
TAKAHASHI YOSHIAKI
YOSHIDA YUKI
KATO YOJI
YOSHIDA YUKI
KATO YOJI
Application Number:
JP22686397A
Publication Date:
March 02, 1999
Filing Date:
August 22, 1997
Export Citation:
Assignee:
ISHIKAWAJIMA HARIMA HEAVY IND
KATO YOJI
KATO YOJI
International Classes:
B63B1/38; (IPC1-7): B63B1/38
Attorney, Agent or Firm:
Masatake Shiga (2 outside)