Introduction to the main breakwater: The main breakwater is located on the south side of the port area, with a total length of 534 meters and a width of 47 meters. It adopts a slope structure on the outside and a caisson gravity structure on the inside, which can not only prevent waves from invading the port area, but also has a stepped design that can provide a platform for tourists to watch the games, which is the first of its kind in the Olympic Games. In addition, the upright quay on the inside of the main breakwater can also dock various types of yachts, and is equipped with multi-functional rooms such as maintenance and boathouses, which can be said to serve multiple purposes.