equipment that is self-propelled during the excavation phase or the transportation phase or both, and.Within these four categories, equipment can be further subdivided based on the means of propulsion: Mechanical/hydraulic dredgers (utilising both basic elements in some combination) – cutter suction dredgers.The four broad classifications used here are based on the method of excavation and operation: The above-mentioned dredgers can be categorised in several ways. environmental requirements and limitations.the availability of equipment or cost of mobilisation to deploy to a given area of the world,.the placement, relocation and reuse alternatives,.the quantities and types of material to be dredged,.No single type of dredger or system of employment will be suitable for all projects. When choosing equipment, contractors, clients and consultants must give careful consideration to the operation at hand.
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