This type of dredger is usually used in geological areas having hard surface where the standard suction dredger may not be of much use. This kind of dredger with sharp cutters are used to cut the hard rock underneath without blasting the rock. The suction mechanism of CSD is at the suction inlet. The dredged material is let out through a pipe, centrifugal pump or to a barge.   Read More...

Trailing suction dredger or TSD is called so because it trails or is behind the suction pipe while it works. It loads the spoil into hoppers on the vessel. The pipe is fitted with a dredge drag head.   Read More...

As the name suggests, these are the dredgers that can work everywhere, on ground, in water, onto a seabed. Some of these are the excavators whose legs would be on highly placed hinged legs to keep its machine out of water. Some of these amphibians cannot work in deep water though.   Read More...

A bucket dredger has a bucket and a device which picks up the sediment mechanically. Those may be circulating buckets attached to a wheel or a chain. Some bucket dredgers are powerful enough to cut coral reef and make a way for shipping channels.   Read More...