Patent ID: 7677191

Claim:
A frictional resistance reduction ship, comprising: a ship equipped with microbubble generators, said microbubble generators comprising first and second sets of microbubble generators attached to lateral sides of ship hull from ship waterline to ship bottom, each of said microbubble generators being equipped with a wing spaced from the ship hull for generation of negative pressure during navigation of the ship; said first set of microbubble generators attached to an upper part of the ship hull in a first region below the ship waterline, said first set of microbubble generators each having a first air-liquid mixture space opposite the wing for mixing seawater and air; a first air charging line provided for said first set of microbubble generators having a first end and a second end, said first end connected to the first air-liquid mixture space opposite the wing, and said second end of said first air charging line exposed to open atmosphere, said second set of microbubble generators attached to a lower part of the ship hull proximate said hull bottom in a second region below said first set of microbubble generators, said second set of microbubble generators each having a second air-liquid mixture space opposite the wing for mixing seawater and air; a second air charging line provided for said second set of microbubble generators having a first end and a second end, said first end of the second air charging line connected to the second air-liquid mixture space opposite the wing in said second set of microbubble generators, and said second end of said second air charging line connected to an assist compressor.