Crown-drilling pumping sand:
Dredging vessels, namely removal tool underwater sediments. Generally there are diesel powered motor two kinds. That buoy hull, using assembled box structure. Has dredging means, power means, transmitting means and so on. Powered device cleared by dredging the bottom sediments, sent by the transmitting device to the specified location. Bucket dredging boat that chain bucket dredgers
Cutter suction dredging ship is the ship's main dredging ship, the floating body, reamers, on straw, under straw, pumps, power and other components. He used under straw front of reamers, rake head unit will bottom sediments stirred loose after cutting through a straw by pumping down from there sent to the specified location on the straw. This boat high efficiency and low cost. 50 square sand-water mixture to 500 per hour according to the ship side. At present, some large dredging boat handling capacity exceeded 1000 party.