SHIP RESISTANCE-REDUCTION DEVICE - MITSUBISHI HEAVY IND LTD

Title:

SHIP RESISTANCE-REDUCTION DEVICE

Document Type and Number:

WIPO Patent Application WO/2011/052337

Kind Code:

A1

Abstract:

In the provided ship resistance-reduction device, a gas-containing chamber is disposed inside the hull of the ship and extends in the direction of the width of the ship, straddling a longitudinal frame. A diffusion material is disposed inside the gas-containing chamber and extends in the direction of the width of the ship, straddling the longitudinal frame. Air blown into the gas-containing chamber from an air-supply pipe hits the diffusion material and diffuses in the direction of the width of the ship, and is then blown into the water from an air-blowing hole formed in the bottom surface of the gas-containing chamber. Since the gas-containing chamber extends in the direction of the width of the ship, straddling the longitudinal frame, it is possible for a single gas-containing chamber to form a bubble stream that is wide in the direction of the width of the ship. This reduces the number of gas-containing chambers needed to form a bubble stream that covers the entire width of the bottom of the ship, and reduces the number of air-supply pipes, which are provided for each gas-containing chamber.

Inventors:

TAKANO SHINICHI (JP)
MIZOKAMI SHUJI (JP)
HIGASA SEIJIRO (JP)
KAWAKITA CHIHARU (JP)
MUKOU KIYOMITSU (JP)

Application Number:

PCT/JP2010/067064

Publication Date:

May 05, 2011

Filing Date:

September 30, 2010

Export Citation:

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Assignee:

MITSUBISHI HEAVY IND LTD (JP)
TAKANO SHINICHI (JP)
MIZOKAMI SHUJI (JP)
HIGASA SEIJIRO (JP)
KAWAKITA CHIHARU (JP)
MUKOU KIYOMITSU (JP)

International Classes:

B63B1/38

Foreign References:

JP2008143345A	2008-06-26
JPH11227675A	1999-08-24
JP2008143345A	2008-06-26
JP2009245515A	2009-10-22

Other References: