Development of Physics-Based Ship Stability Assessment Procedures to Be Used as International Standards

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For facilitating the development of physics-based ship stability standards at the International Maritime Organization, new assessment procedures consisting of vulnerability criteria using periodic waves and direct stability assessment using random waves in the time domain were proposed. They cover four distinct failure modes, i.e. parametric rolling, pure loss of stability, broaching and stability under dead ship condition, and were validated with physical model experiments. Here the acceptable safety levels were presented and the use of new hull form for improving the stability safety was investigated as well.