Damen unveils innovative dredger design

Damen has unveiled an innovative twin-hulled, deep cutter suction dredger design – the DCSD500.

The new, compact dredger has been designed to operate at dredging depths that have previously been possible to reach only with larger dredgers, the company explained in a statement.

The fully dismountable DCSD500 has been designed in a catamaran format with the buoyancy provided by pontoons forming the outer limits of the vessel to port and starboard.

The suction ladder, which is centrally mounted between them, is fitted with a submerged dredge pump which is directly driven by a diesel engine. This is also mounted on the ladder. The dredger can be controlled by a single individual from the control cabin which is raised for an optimal project overview.

Dredging can be done down to a depth of around 25 metres. The 110kW cutter unit is designed for breaking up compacted soil and the submerged dredge pump, capable of moving approximately 4,000 m3/h of mixture, is highly efficient, operating at high concentrations due to its position below the waterline. A 954 kW CAT type 3512 C TA diesel engine is mounted on the suction ladder to drive the dredge pump directly.

The key consideration behind the design has been to meet demand for a cost-efficient dredger that is able to dredge deeper than the current options available in the Damen portfolio. This catamaran design competes with much larger traditional pontoon-based alternatives.

The new Damen dredger does share one element with its conventional counterparts. It is fully dismountable into container-sized elements. This ensures practical transport at low cost to almost any location, coastal or inland, by road, rail, sea or air.

Posted 29 May 2019

© Copyright 2019 Seatrade (UBM (UK) Ltd). Replication or redistribution in whole or in part is expressly prohibited without the prior written consent of Seatrade.

Michele Labrut

Americas Correspondent, Seatrade Maritime News

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