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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2018/025644
Kind Code:
Provided is a ship 1 in which stern ducts 10A-10E, each having a duct member 11 and a duct support member 12 for supporting the duct member 11 on a ship hull 2, are disposed immediately before a propeller 3, wherein a rear edge of the duct member 11 which is located above the center C of a propeller rotating axis as viewed from a bow-stern direction is configured to have a shape formed so as to include a portion of an elliptical shape that has the minor axis oriented in the ship width direction and the major axis oriented in the water depth direction. This configuration allows a ship having stern ducts disposed immediately before a propeller to have the thrust generation portion of the stern duct, which contributes to generating thrust by utilizing a slipstream of the ship hull, formed in a much greater size as compared with a stern duct in a circular arc shape, and thus enables an increase in the thrust generated by the stern duct.

YAMAMOTO Kotaku (6-4, Tsukiji 5-chome, Chuo-k, Tokyo 39, 〒1048439, JP)
KIMURA Koyu (6-4, Tsukiji 5-chome, Chuo-k, Tokyo 39, 〒1048439, JP)
AKIBAYASHI Hideaki (6-4, Tsukiji 5-chome, Chuo-k, Tokyo 39, 〒1048439, JP)
OKA Saori (6-4, Tsukiji 5-chome, Chuo-k, Tokyo 39, 〒1048439, JP)
Application Number:
Publication Date:
February 08, 2018
Filing Date:
July 20, 2017
Export Citation:
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MITSUI ENGINEERING & SHIPBUILDING CO.,LTD. (6-4 Tsukiji 5-chome, Chuo-ku Tokyo, 39, 〒1048439, JP)
International Classes:
B63B1/08; B63H5/16
Foreign References:
Attorney, Agent or Firm:
SEIRYU PATENT PROFESSIONAL CORPORATION et al. (37 Kowa Building, 4-5 Tsukiji 1-chome, Chuo-k, Tokyo 45, 〒1040045, JP)
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