On the Uniqueness of the Approximate Analytical Solution of the Surf-Riding Threshold in the IMO Second Generation Intact Stability Criteria
Abstract
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 and based on the relationship between Melnikov's analysis and its physical interpretation.
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