When the hopper is full, the ship sails to its destination, the reclamation area.Ĭutter suction has to be towed to their work site by tugboats. The excess water is drained of via the overflow pipes. Sand pumps transfer the sand dredged up by the suction head into the hold or hopper. When the vessel starts dredging, the ship reduces its speed to some 1 to 2 knots and then lowers the suction pipes on both sides of the ship all the way to the seabed. Suction dredging is mostly done in a very dynamic environment,Ī trailing suction hopper dredger is a large ocean going vessel. Then redeposit the stream material back onto the bottom of the Through a separation system to recover valuable minerals, and
TheyĪre commonly used to pull material up from a stream bottom, run Suction dredges are essentially underwater vacuum cleaners.
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