What is dredging & how does it work?

What is dredging? Dredging is a complex, multi-faceted operation. It generally involves removing material from the seabed for use in either marine aggregate extraction or port engineering projects such as the excavation of basins or channels.

How does a dredger work?

They operate by dragging a sling across the water bottom, creating a current that carries sediment toward the dredger. Dredging with cutter dredgers: Cutter-disc dredges are used when the materials to be dredged are more resistant, such as consolidated clays, rocks or gravels.

What is a floating dredge?

The Autonomous Floating Dredge. An alternative to the Subdredge which lives on the sea floor or lake floor, we have a floating dredge option. This floating platform is controlled by a cable system and can be stationary or dredge a programmed pattern. The Best Non-Clog and High Solids Slurry Pump on the Market. Since 1984.

Can a dredge be used with an ROV?

When used with an ROV, the dredge can be cage or belly mounted. For pipeline excavation, cuttings remediation, salvage, and other offshore tasks, we offer expanded dredge sizes from 10 in (254 mm) to 16 in (406 mm). Our larger dredges can be deployed as stand-alone systems to remove greater volumes of seafloor debris.

How do subsea dredges work?

Subsea dredges with attached collection buckets keep drill sites clear of debris. We use an ROV to make subsea connections, and our drill cuttings collection tool can be deployed without a rig. Our team of experts is ready to help you get started.

What machines do you need for dredging?

Depending on the method chosen, dredging will require one or more of the following machines: Trailing-edge dredger : mainly used for maintenance dredging and aggregate extraction in ports, and which operates by suction. Cutter dredger is mainly used for dredging in resistant materials (clays, rocks, consolidated gravel).