Defination

A cutter suction dredger is a hydraulic dredger that uses centrifugal pumps with a rotating cutter head to loosen, lift and transport dredged material. Julong Dredging machines are non-propelled dredger. Small and medium size cutter suction dredgers can be dismountable and transportable over land. The hull is then comprised of a series of pontoons, with the one pontoon containing the machinery.

Working method

The cutter will be moored with spuds or anchors while at work so that in essence the dredging operation takes place with the cutter in a stationary position.

Project aplications

Cutter suction dredgers are used wherever the seabed is hard rock. They are used for larger dredging projects such as navigation channels and port development and maintenance and land reclamation and in major projects such as the Panama Canal and the Suez Canal.

Types of dredging materials

Cutters are powerful and are capable of dredging all kinds of material in water including hard rock. They are able to effectively dredge: silts, clays, sand, gravel, cobbles, fractured rocks and sound (unfractured) rocks.

Advantage

The primary advantage of a CSD is that it is able to dredge hard materials that most trailing suction hopper dredgers cannot handle. Julong most powerful cutters can dredge hard rock effectively on a continuous basis. The CSDs shall work together with work boat and be deployed in remote locations, far from their home port, making them flexible to be used all over the world. They can work in shallow waters and they also have flexible discharge alternatives.