The container carriers represent a challenge in the design process, where an important role play the estimation of design loads and their response. The wave-induced vibrations are often referred to as whipping as a transient phenomenon due to wave impacts and springing as a resonance phenomenon due to oscillating loads. These hydro-elastic vibratory phenomena’s are the most important consequences of the continuous increase in the ship length and low stiffness of the hull girder. While this is a concern in the marine industry, this phenomenon is not clearly considered in the design. Therefore, there are uncertainties associated with the wave-induced vibration intensity and the probability of occurrence of whipping to the sea state that needs to be clarified.

This paper address the effect of the relationship of the characteristics of whipping vibration to the sea state, evaluating the results of a series of time-domain computational simulations. A numerical method that combines a three-dimensional panel method and FEA proposed by one of the co-authors is employed for evaluating the load effects. The calculations are performed for the respective short-term sea states. This study presents the probability of occurrence and vibration intensity of the whipping vibration experienced by a 6500 TEU container carrier in a North Atlantic Ocean route.

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