Regardless of size, all cutter suction dredgers are equipped with a rotating cutter head, which is able to cut hard soil or rock into fragments. Some cutters have a pontoon hull without the means of propulsion (non-propelled), and others, shaped like a ship, are self-propelled and seagoing. They have the ability to dredge nearly all kinds of soils – sand, clay, rock – and are used where the ground is too hard for trailing suction hopper dredgers. “Facts About Cutter Suction Dredgers” describes a type of hydraulic dredger that can dredge nearly all kinds of soils, especially hard ground and rock.Ĭutter suction dredgers (CSDs) are classified as hydraulic dredgers and are the most common vessels in the hydraulic/mechanical category.
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