HC650-02 water surface unmanned boat is a totally closed monitoring boat with single hull, single diesel engine and waterjet propulsion, built by high-performance composite material. It can be used to measure the geomorphology of complex sea area, shallow waters and rivers. It can measure and collect data in areas that can not be reached by surveying vessels. HC650-02 unmanned boat is equipped with multi-beam sounding system, side scan sonar, and other underwater acoustic measurement equipments. It has remote control, autonomous marine survey and hydrological detection functions. It is suitable for underwater topographic and geomorphological exploration of islands and offshore shallow waters.