The chain bucket dredger uses a dredging bucket mounted on two parallel steel cables to excavate sediment, and uses a chain wheel and steel cable at the top of the bucket tower to pull the dredging bucket for excavation and unloading. This type of ship is suitable for excavating harder soil. The grab dredger uses a large grab to directly grab sediment, suitable for excavating harder soil or salvaging underwater objects.

With the continuous progress of technology and the increasing demand for environmental protection, dredgers are also constantly developing towards intelligence and environmental protection. Future dredgers will pay more attention to energy conservation, emission reduction, and ecological protection, adopting more efficient and environmentally friendly excavation technologies and treatment equipment. Meanwhile, with the continuous application of technologies such as artificial intelligence and big data, the intelligence level of dredgers will also continue to improve, achieving more precise and efficient operations.