DOP Pump 200 with cutter unit At Kalba various breakwaters have been reinforced using a DOP200 attached to a Hitachi crane. The sand for the job was mined at sea, and pumped over a max 500 m distance to the jobsite. When the breakwaters were ready, more sand was pumped for replenishing local beaches.Damen DOP Submersible Dredge Pump 200 running on Hitachi crane hydraulics. See all deliveries