Suction dredgers are widely used in port and channel dredging, as well as reclamation projects. The advantage of using a suction dredger is that it can achieve an accurate dredging profile. The working principle of a suction dredger involves using a cutter head at the front of the dredger to break up underwater sediments. After forming a slurry, it is then吸入 through a centrifugal slurry pump from the cutter head, passing through the ship's intake pipes, slurry pumps, and discharge pipes (both onboard and offshore) to the unloading site, thus completing the dredging operation. Its dredging, transportation, and unloading processes can be carried out continuously in one go, making it an efficient and cost-effective dredger, a good underwater excavation machine.

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