A comparative method for scaling SOLAS collision damage distributions based on ship crashworthiness - application to probabilistic damage stability analysis of a passenger ship

Conti, Fabien and Le Sourne, Hervé and Vassalos, Dracos and Kujala, Pentti and Lindroth, Daniel and Kim, Sang Jin and Hirdaris, Spyros (2022) A comparative method for scaling SOLAS collision damage distributions based on ship crashworthiness - application to probabilistic damage stability analysis of a passenger ship. Ships and Offshore Structures, 17 (7). pp. 1498-1514. ISSN 1754-212X (https://doi.org/10.1080/17445302.2021.1932023)

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Abstract

SOLAS2020 damage stability regulations are based on probabilistic damage distributions. Those originate from the pooled analysis of collision accidents across a fleet with bias towards cargo ships. This paper introduces a method that accounts for collision-based crashworthiness on ship damage distributions. The method reshapes statistical SOLAS damage distributions for a given ship or structural details for a reference ship section and her reinforced version. Damage reductions may differ depending on ship characteristics and operational scenarios. To mitigate this, a high number of collision scenarios was simulated using the super-element method. It is shown that risk control in terms of damage reduction over the whole range of damages is possible by adding a double hull or by deck reinforcement. Damage reduction is quantified by damage stability analysis of a cruise vessel. It is concluded that installing a double hull on ship vulnerable zones leads to increased A-index.

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