Taking a river-sea container ship as a study subject,the lines optimization is conducted on the condition of satisfying the displacement and arrangement.In conjunction with the method of computational fluid dynamics(CFD),the low resistance invisible bulb and the high efficiency twin-skeg stern are adopted,finally the optimized lines are obtained.Model tests are carried out based on the optimized lines.The results show the ship speed of the optimized lines can reach 13.55kn at specified delivered power at design draft,which proves the success of the lines development.The lines develop-ment for river-sea container ship can provide reference for subsequent research.
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