12万トン形タンカーBERGEBIG号の進水について
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概要
- 論文の詳細を見る
Due to the recent tendency of enlargement of ship size, and also machinery erection and outfitting works at early construction stage, launching weight has increased year by year. At last launching weight reached to 21,558 tons at the launching of m.v. "BERGEBIG", which had successfully launched at our Hitachi Innoshima Shipyard on 22nd of November, 1965 using semi-8 feet launching ways, which had been developed by our shipyard to meet increase of launching weight. Mean pressure on fat at this launching is 28.63t/m^2 which, we presume, is the highest value in fat launchings experienced so far in the world, at least in Japan. Here, we report our experiences on the launching in which we have mainly indicated following three points; 1. There was not any hindrance on the launching ways and their constructions even under such high pressure. 2. Frictional coefficients of fat at both during sliding and just before starting conditions were nearly same as our empirical value derived from the result of launchings of lesser pressure. There was not any peculiar change in frictional coefficients due to high pressure. 3. Web plates of bottom transverses in way of cargo tank part just above the launching ways slightly yielded to hollow in spite of their previous reinforcement. Attention must be paid for such part, especially for the tanker whoes bottom transverses are arranged in wider space and comparatively thin in their thickness.
- 社団法人日本船舶海洋工学会の論文
- 1967-02-28