This is the main reason why the dredger must be used to clear the silt in the river! The dredging ship can be designed according to the working environment, and the dredging capacity can reach more than 500 cubic meters, which is the pure earthwork. Our dredgers usually dredge 50-100 cubic meters per hour. Because of the thin mud layer, even large dredgers have no work efficiency, and most of the urban rivers are narrow, so small and flexible dredgers are cheaper. For river dredging with thick mud layer, high-yield dredgers can be selected. For example, 12 inch pump dredger can pump more than 200 cubic meters of mud per hour.