巨大客船の損傷時浸水中間段階における挙動に関する実験的研究

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  • An Experimental Study on Roll Motion of a Damaged Large Passenger Ship in Intermediate Stages of Flooding
  • キョダイ キャクセン ノ ソンショウジ シンスイ チュウカン ダンカイ ニ オケル キョドウ ニ カンスル ジッケンテキ ケンキュウ

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Roll motion of a two-dimensional model of the center part of a damaged large passenger ship is measured from the start of flooding to the end of flooding in calm water. The experimental results suggest that large roll motion sometimes occurs in the intermediate stages of flooding although the ship is safe at the end of flooding. The behavior of ship motion in the intermediate stages of flooding is significantly complex, and depends on many factors, for examples, air ventilation though bulkhead deck, GM, location and size of damage openings, detailed arrangement on decks and so on. It is confirmed that the maximum roll angle in the stages can be approximately predicted by quasi-static stability calculation. When the superstructure of a damaged ship is damaged and water flows into the bulkhead-deck, capsizing is observed in the experiments. This fact suggests that prevention of spreading water on the bulkhead-deck is very important for the safety of such a large passenger ship in the intermediate stages of flooding after damage.

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