Some Examinations of Capsizing Probability Calculation for an Indonesian RoRo Passenger Ship in Waves

DOI Web Site 被引用文献1件 参考文献8件
  • ISKANDAR Budhi H.
    Dept.of Naval Architecture and Ocean Engineering, Graduate School of Engineering, Osaka University
  • UMEDA Naoya
    Dept.of Naval Architecture and Ocean Engineering, Graduate School of Engineering, Osaka University

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For an Indonesian RoRo passenger ship, the authors in their previous works had found that the annual capsizing probability calculated with the piece-wise linear approach and the existing wave statistics almost agrees with the actual capsizing rate obtained from the casualty records in Indonesia. To confirm this conclusion, in this paper the authors examine, by systematic calculations, the effect of some important input items, that is, the resolution of wave statistics, the wave duration and the roll damping. As a result, the authors confirmed that 1)the annual capsizing probability converges when the cut-off probability is 10^<-5> 2)the annual capsizing probability sightly decreases when the wave duration increases and 3)the annual capsizing probability does not significantly depend on the change in the roll damping for GM values. Therefore, the conclusion obtained in the previous works with the cut-off probability of 10^<-5> wave duration of 1200 seconds and the roll damping coefficient at the designed GM conditon can be regarded as appropriate.

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