Dredgers play a crucial role in modern water construction. In the port expansion project, dredgers can quickly remove silt and obstacles from the waterway and harbor, providing safety guarantees for the passage of ships. In river dredging projects, dredgers can effectively remove sediment and sediment from the riverbed, restore the navigation and flood discharge capacity of the river. In addition, dredgers are widely used in fields such as marine engineering, coastal protection engineering, and reservoir construction.

Dredgers can be classified into various types based on their working principles and uses. Among them, the rake suction dredger sucks in sediment through the suction pipe and transports it to the mud tank on the ship; The cutter suction dredger uses a cutter device to cut the sediment and transport it to a designated location through a mud pump and pipeline; The grab dredger, on the other hand, uses a large grab to directly grab sediment, making it suitable for excavating harder soil. In addition, there are various types of dredgers such as chain bucket and bucket to meet the needs of different projects.