Roling Characteristics of Self-Elevating Platform and a Study on its Anti-Rolling Device : Report 2

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  • 有脚昇降式海洋作業台の動揺特性とその減揺対策の提案について (その2)
  • 有脚昇降式海洋作業台の動揺特性とその減揺対策の提案について-2-
  • ユウキャク ショウコウシキ カイヨウ サギョウダイ ノ ドウヨウ トクセイ ト ソノ ゲンヨウタイサク ノ テイアン ニ ツイテ 2

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Various kinds of work done at sea are often characterized by far lower efficiency than in work performed on land. This is true of the self elevating platform (S.E.P.), the subject of this paper. Although the S.E.P. is designed to be able to resist winds of up to 60 meters per second and waves of up to 10 meters high, the regulations forbid installing it on the sea bottom or removal of it from that under conditions involving winds of more than 10 meters per second or waves of more than 1.5 meters high for the purpose of protecting its lengthy legs. But standby time to wait for the recovery of good weather means poor efficiency. This paper mathematically proves, through a study of the rolling characteristics of the S.E.P., the effectiveness of an automatically controlled anti-rolling device in decreasing its rolling by means of compressed air.

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