A method of fuzzy comprehensive evaluation of the adaptability of surface ships in stormy wave environments

In order to study the integrative performance of a ship in actual navigation,a set of overall evaluation indices of the adaptability of the ship in stormy wave environments were proposed by integrating a multidisciplinary ship theory. The analytical hierarchy process and entropy were used to obtain the index weights. Then the final evaluation was made by using the fuzzy comprehensive evaluation model. The data were converted into percentiles by use of the half-ridge-like function and the membership degree was determined by use of the normal distribution function,which made the evaluation results more reasonable. Finally,an example of evaluating the adaptability of ships in stormy wave environments indicates that this method has a certain application value.