The physical experiment is performed to study the berthing condition of Weihai shipyard after it moves to a new site.Experimental results show that the berthing conditions of most berths are satisfactory under the 2-year return wave height.The berthing conditions of the others are neither satisfactory nor too serious for the ship berthing.Based on the MIKE21-BW model,which takes into consideration of wave reflection,wave diffraction and wave breaking,we establish a nearshore wave transformation model.The unidirectional irregular wave propagation and transformation in Weihai shipyard is simulated using this model.The comparison between the numerical and measured results show that the maximum difference of significant wave height is 0.29 m outside the harbor basin,and the maximum difference is 0.1 m inside the basin.The results of calculation and measurement are in good agreement.It indicates that the BW model is suitable for the wave transformation and basin tranquility of Weihai shipyard.