Prediction of extreme sea-state encountered by oceangoing vessels

In order to determine the extreme sea-state encountered by oceangoing vesse ls, a method for the prediction of wave parameters based on the data of lon g-term distribution sample is developed by use of the fitting approach with the Weibull probability functions and the power functions. As an example a special calculation result is given including the analysis of wave paramet ers for the data of the North Atlantic Basin and the computation of motion and load encountered by two container ships CSLR and CSBV in different load ing conditions. All computation results are satisfactory compared with corr esponding design results.