| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce frictional resistance of a hull by air blowout to water and to prevent involution of the air bubble to a propeller while ensuring the strength of the hull.SOLUTION: An air blowout device blows out air to underwater from air outlets 31-33 provided on a bottom 13. An air recovery device collects air into a hull 10 from air recovery openings 41-43 provided on the bottom 13. A propeller 16 is arranged on a center line CL. The air recovery opening 41 is provided across the center line CL. The air recovery opening 42 is provided in a port 14 side of the center line CL to extend to the port 14 side beyond the air recovery opening 41. The air recovery opening 43 is provided in a starboard 15 side of the center line CL to extend to the starboard 15 side beyond the air recovery opening 41. The air recovery openings 42 and 43 are arranged in a bow 11 side of the air recovery opening 41. Each of the air recovery openings 41-43 is formed by a plurality of air recovery holes 41a-43a.</p> |
