大阪湾の底質と投下時におけるアンカー姿勢について(日本航海学会第37回講演会)

概要

論文の詳細を見る
When Typhoon No.6420 passed in and around Osaka-Wan in Sept.1964, we had a hard experience, which almost vessels riding at anchor found it was no longer possible to steam up head to wind and the anchors started to drag. Therefore, in order to investigate on the anchoring in the stormy weather, we carried out the full-scale tests on JIS-stockless anchor presently being utilized by the Japanese merchant ship, that's to say, we researched as a first step of this study the connections between the nature of the sea bottom and the attitude of the anchor when letting go anchor, and these tests were made in the mud bottom of Osaka-Wan, in the sand bottom of Harima-Nada. From the results of these tests we may truthfully say that the anchor started to peneterate in the sand bottom, but that the anchor fluke were mostly opening upward and were not trend of trip in the soft mud bottom.
社団法人日本航海学会の論文
1967-12-25