Hydraulic dredgers use water to transport the dredged material. The material is picked up by the suction of a pump, then transported through a pipeline in the form of a slurry.
Mechanical Dredgers use a bucket , clamshell or other mechanical means to scoop the material from the bottom. If the material cannot be discharged close to the dredge, then it must be stored for subsequent transport.
Usually ship-form in design, a hopper dredger deposits the dredged material in an on-board hopper for transportation. Both mechanical and hydraulic designs are common for loading the hopper as well as for discharging the dredged material.
This category encompasses the parts of a dredger such as dredger pumps dredger booster pumps, engines, cutter heads, hydraulic components, ladders and the like.
This category encompasses all the parts of a dredger discharge pipeline including pipe, floats, pipeline pontoons, ball joints, etc.
This category encompasses the myriad equipment required to support a dredging operation on shore.