The cutter suction dredger is a widely used ship in the process of dredging and dredging. It uses a rotating cutter device installed around the suction pipe at the front end of the suction pipe to cut and stir the sediment at the bottom of the river. Then, through the suction pipe, the twisted sediment material is transported to the sediment material storage site with strong pump power. Its dredging, transportation, unloading and other work processes can be completed continuously in one go, which is highly efficient Low cost dredgers are excellent underwater excavation machinery. The cutter suction dredger includes two types: hydraulic and mechanical. The hydraulic type has a wider range of applications and is more convenient to operate.