For this reason an advanced training simulator was developed together with “d’Artagnan”.Describe:1.Classification: normal version white, red, goldNo timing, ordinary panel, upgraded gravity, enhanced motor version, no heat, plug-in adapter, ordinary magnet2. To ensure optimum deployment of “d’Artagnan” and its new generation of automated systems additional focus on crew training is necessary. In recent years large dredging projects requiring CSD’s on one hand pushed the industry to focus on the development and optimisation of CSD’s and hence on the ship-borne automated systems and on the other hand brought dredging crews, consisting partly of young men with little experience in the operation of CSD’s, back on board of CSD’s. “D’Artagnan” is optimised for both types of sea bottom material. Conventionally a CSD is designed for optimum performance in hard soils or for optimum performance in soft material. The dredging process -disintegration of the material, mixture formation of bottom material with seawater and pump process- behaves very differently in hard and in soft material. limestone, coral.) and on the other hand to pump away relatively soft sea bottoms (sand, soft clay, silt.). CSD’s on one hand are used to excavate hard rocky materials (e.g. “D’Artagnan” is equipped with a spud carrier system capable to meet these requirements. The ideal is to create a variable stiffness – stiff in light wave conditions, flexible in rough wave conditions – and to decrease stiffness dramatically once the spud system is loaded beyond a certain limit. This coupling needs to be stiff to allow an efficient cutting process, but may not be too stiff, since the pontoon will irresistibly follow the movements of the longer waves and therefore high stiffness will inevitably lead to high forces in the links. The most important “link” is the spud (vertical steel tube) which is coupled to the CSD by means of the spud carrier. Wave induced motions of the CSD generate additional forces on the “links” between the CSD and the sea bottom.

and Stroo S.Ībstract: Large cutter suction dredgers (CSD) frequently operate in open estuaries and at sea.

CEDA presentations at third party eventsĬEDA Dredging Days 2005 - Dredging: The Extremes, Rotterdam.

Financing Sustainable Marine and Freshwater Infrastructure.

Dredging for Sustainable Infrastructure.

Checklist for successful dredging management.Beneficial use of sediments: Case studies.

Hand dredging