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<p>The International Maritime Organization developed the Second Generation Intact Stability Criteria (SGISC) with the objective of mitigating maritime incidents attributable to roll motion. Given that surf-riding precedes broaching, the SGISC uses vulnerability criteria for broaching based on surf-riding dynamics. The surf-riding threshold is derived by Melnikov’s method in the level-2 vulnerability criterion. In this paper, the authors discuss the uniqueness of the approximate analytical solutions to be used as the surf-riding threshold in the SGISC, based on the relationship between Melnikov’s analysis and its physical interpretation. </p>

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On the uniqueness of the approximate analytical solution of the surf-riding threshold in the IMO second generation intact stability criteria

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月28日

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  • Masahiro Sakai,
  • Naoya Umeda

摘要

The International Maritime Organization developed the Second Generation Intact Stability Criteria (SGISC) with the objective of mitigating maritime incidents attributable to roll motion. Given that surf-riding precedes broaching, the SGISC uses vulnerability criteria for broaching based on surf-riding dynamics. The surf-riding threshold is derived by Melnikov’s method in the level-2 vulnerability criterion. In this paper, the authors discuss the uniqueness of the approximate analytical solutions to be used as the surf-riding threshold in the SGISC, based on the relationship between Melnikov’s analysis and its physical interpretation.