![]() 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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