Title:
DRAINAGE STRUCTURE OF BALLAST TANK
Document Type and Number:
Japanese Patent JP2023073992
Kind Code:
A
Abstract:
To provide a drainage structure of a ballast tank in which the drainage time of residual ballast water is not significantly lengthened even if the number of communication holes and their opening areas are reduced.SOLUTION: The total opening area of multiple vertical frame members 17, multiple girder members 11, and multiple communication holes 25 provided in each part of multiple floor members 13 facing each small partition chamber 19 included in 3 or 4 rows of small partition chambers 20Wa-20Wd in the ship width direction, decreases away from the small partition chamber provided with a suction port 21 centered thereon in multiple small partition chambers in a prescribed region centered on the small partition chamber provided with the suction port. The communication hole 25L is not provided in each part of the girder members and the vertical frame members facing a part or all of the small partition chambers among the multiple small partition chambers in the small partition chamber rows in the ship width direction, which are a part or all of the small partition chamber rows 20Wf-20Wh in the ship width direction except for the small partition chamber rows 20Wa-20Wd in the ship width direction.SELECTED DRAWING: Figure 2
Inventors:
SHINODA TAKESHI
NAKAMORI RYUICHI
OBATA HIDEO
KUROKI KENJI
NAKAMORI RYUICHI
OBATA HIDEO
KUROKI KENJI
Application Number:
JP2022179810A
Publication Date:
May 26, 2023
Filing Date:
November 09, 2022
Export Citation:
Assignee:
NAMURA SHIPBUILDING CO LTD
UNIV KYUSHU
UNIV KYUSHU
International Classes:
B63B11/04; B63B3/20; B63B3/34; B63B3/58; B63B11/02; B63B13/00
Attorney, Agent or Firm:
西浦 ▲嗣▼晴
Tadashi Ideyama
Toshiya Hatsuse
Tadashi Ideyama
Toshiya Hatsuse
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