Abstract: To pre-estimate the full-scale fishing ship resistance, this paper takes a 11.75 m fishing ship as the research object,and a complete set of methods is developed to convert the numerical simulation result of the ship model to a full-scale ship based on the CFD method. The results denote that this method can effectively estimate the hull resistance of the fishing ships and reduce the design cost. Based on the vertical hydrodynamic of the ship, the reasons for the peak point and valley point on the curve of the resistance are analyzed explaining the manner in which the resistance increases initially and subsequently decreases with increasing speed of the ship.

Key words: CFD, STAR-CCM+, resistance, vertical hydrodynamic, peak point, valley point