IHC Merwede secures order for self-propelled CSD from Boskalis
IHC Merwede has been awarded the contract for the design, construction and delivery of a 23,684kW self-propelled cutter suction dredger (CSD) from Royal Boskalis Westminster. and the pump ashore capacity is of 15,600 kW. The new CSD is a replacement investment. The 152m-long and 28m-wide dredging vessel will be one of the largest CSDs of its kind in the world, IHC said. The total investment amounts to around EUR 170 million and construction of the vessel is expected to take more than three years.
Much attention has been paid to the design in terms of safety, the environment and increased operational workability. A particular feature of the vessel, which has a maximum dredging depth of 35m, is the widening of the aft ship in order to reduce the draught. It offers accommodation for 45 crew member.
This Cutter Suction Dredger (CSD) is a suction dredger equipped with a rotating cutterhead. The CSD is positioned on spuds and anchor wires during dredging operations. A CSD is suitable for dredging silts, sand, clay and rock. Maximum dredging depths is of 35 m.
The main parts of this CSD are:
the hull, containing the engines, (propulsion), pump(s), the crew quarters, the bridge with the dredging and navigational control, etc.; the cutter ladder, containing the cutterhead, suction pipeline and first dredge pump (optional); the discharge system, consisting of dredge pump(s) and pipeline(s); the spud poles (2) and carriage which provide a stable position and forward movement; the anchors and side winches which provide the sideward movement
Cutterhead of a CSD
Image / graphs: courtesy of Boskalis / IHC Merwede