The sand was pumped through pipes, containing a mixture of sand and water, leading from the lock chamber to the spray pontoon. The cutter suction dredger then sucked up the sand. Meanwhile, the cutting head cut loose the sand in the lock chamber. The cutter suction dredger moved back and forth by means of its anchors. Wessel explained what the work involved, "We dredged the lock chamber with the cutter suction dredger and a crane pontoon. The only remaining item now is the construction of the bottom of the lock." The whole processÄredging the lock chamber was an important and extensive process. The edges of the lock chamber had been cleaned and the walls sprayed clean by divers. After 11 weeks, the lock chamber was at the required depth. Wessel Mak told us, "We started our dredging operation of the lock chamber on 29 June. He has been involved in the construction of the new sea lock since 2014 and gave us an update on the dredging operation. Wessel Mak, Project Manager at Van Oord, is responsible for the dredging of the lock chamber.
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