Tools for prediction of wave impact on FPSO’s and offshore platforms

Improved engineering tools and methods for the prediction of loads from wave impact on FPSO’s and offshore platforms in severe sea states are described. Strongly nonlinear wave-structure mechanisms are involved, and a semi-empirical approach is established based upon present state-of-the-art general knowledge within marine technology. It has been validated through systematic comparisons with model test data. Tools are developed for prediction of air-gap and wave-in-deck loads on platforms, and green water and bow flare slamming on FPSO’s. Robust and practical methods are emphasized. The principles of the approach and examples are presented. In spite of the relatively simple models assumed, promising comparisons to experiments are obtained. © 2005, Sociedade Brasileira de Engenharia Naval.