Wave slam response of large high-speed catamarans

TL;DRAbstract

The rapid evolution of high-speed sea transportation has led to the development of large, fast, lightweight vessels. The structural design optimisation of such vessels requires knowledge of the effect of sea loads on their structure. Of particular importance for high-speed catamarans are severe wet-deck slam events, which can impart a large global load onto a vessel's structure and as a consequence cause significant structural damage. The dynamic whipping response of the structure may also be important by making a significant contribution to fatigue damage. Extensive full-scale hull stress, motion and wave measurements were conducted on two Incat high-speed catamaran ferries. A definition of a slam event, for these vessels, was proposed and used to identify slam events from the data records. The character and effects of these slamming events are investigated with respect to a number of factors. Slam events were found to produce bending moments up to 700% of the largest underlying globa

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