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Title: 荒天錨泊時の係留力の実験的検証
Other Titles: Experimental Analysis on the Anchor Mooring Force in Heavy Storm Condition
Authors: 芳村, 康男1 Browse this author →KAKEN DB
雨宮, 伊作2 Browse this author
松川, 英輔3 Browse this author
今, 吾一4 Browse this author
Authors(alt): Yoshimura, Yasuo1
Amemiya, Isaku2
Matsukawa, Eisuke3
Kon, Goichi4
Keywords: 係留・錨泊
Anchor mooring force
Storm weather
Sail training ship
Model test
Issue Date: 25-Sep-2009
Publisher: 日本航海学会
Journal Title: 日本航海学会論文集
Volume: 121
Start Page: 161
End Page: 167
Abstract: When a ship is anchoring in a stormy weather, the anchor often comes off due to the extreme overload of the mooring force. Then, the ship begins to run and sometimes causes aground, and this makes a serious disaster. The accident of "Toya-maru" was also one of them. There are still such accidents and lost many crew in these days. However, the mechanism of anchor mooring force in a stormy weather is complicated and not clear. Although the wind force to the superstructure becomes the major anchor mooring force, it may not be enough even if the wave drifting force is considered. In this paper, the accident of the sail training ship "Kaiwo Maru" that was caused under the stormy weather by the large-scale typhoon off Hushiki-Toyama harbor in 2004 is investigated based on the model tests. Then, it is found that the peak mooring force becomes extremely larger even in the ahead condition against wind and wave when the ship is more strongly pulled by the wind force and wave drifting force. This may causes the some kind of deadlock condition that the windlass can not pull up the anchor but the anchor begins to walk, until at last the above mentioned accident may happen in the stormy weather.
Rights: ©日本航海学会
Type: article (author version)
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 芳村 康男

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