given by the picture

The diagram we are shown illustrates the process which involves cleaning the slurry of canals with the machine that”s two types are compared by the table given below.

To begin with, the dredger is mounted on the platform for standing stable. It consists of hydraulic arms, shuttle boat, centrifugal pump and large tube. Initially, the hydraulic arms lower the centrifugal pump which has suction pump on the top and rotating blades at the end. Rotating blades eliminate the substances from the deepest point of canal and the suction pump absorb them. At the next stage long tube that is attached to the main pump withdraws the mud and poured into the shuttle boat. At first glance, we can see the perfect system, but there are problems with pollution and noise, however, new technologies are being planned for the future to remove these.

It could be drained the North Sea as well as canal by Coastal dredger, although its features give a chance to use it in longer, at 85 m, broader, at 14 m, deeper areas, at 35 m, when the same figures are far lower in lagoon dredger being 22 m, 6.69 m, 1.87 m respectively.