To solve the problems such as large quantity of rock dumping and bad wave condition in the main breakwater extension construction of Hadarom Port at Ashdod,Israel,we carried out the 2D & 3D physical model tests,based on which,we determine the wave condition limit for different layers of rocks,optimize the construction schedule,design and implement the winter protection structure.We also carried out dynamic control of the construction schedule based on the 2D wave simulation prediction to ensure successful implementation of the project and meanwhile provide reference for the deep-water breakwater construction under similar wave condition.