Two separate numerical optimization process of a frigate ship have been performed whith regard to two different abjective functions, and two optimal configurations have been selected for experimental verification. tion. Experimental value of objective function F_1 is 0.911 for model 2433 and 1.012 for model 2434, while for function F_2 is 0.986 for model 2433 and 0.981 for model 2434. As a consequence, the mean of the experimental value of the objective functions is 0.989 for model 2433 and 0.997 for model 2434, and both the models meanly enhance the selected objective function. Numerical data are also reported in the table 10. There is not a ship hull that is the best for both the objective functions; anyway, one model (2433) is better than the PHF for both the objective functions and both the models meanly behave better than the PHF. Under this standpoint, the experimental verification responds successfully for the optimization process.
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