What is a jet suction dredger, and how does it work?

 Jet Suction Dredger

A jet suction dredger is a type of vessel used in dredging, which is the process of removing sediments and debris from the bottom of bodies of water such as rivers, lakes, and harbors. The vessel is equipped with a powerful pump, which creates a high-velocity jet of water that is used to loosen the sediment and debris from the bottom. The dredger then uses suction to draw the loosened material into a large holding tank, where it can be transported away from the site.

The process of using a jet suction dredger starts with the vessel positioning itself over the area that needs to be dredged. The dredger then lowers a long tube, called a suction pipe or suction arm, to the bottom of the water body. The pump on the dredger creates a high-velocity jet of water, which is directed through a nozzle at the end of the suction pipe. The water jet loosens the sediment and debris from the bottom, and the suction created by the pump draws the material up into the suction pipe and into the holding tank on the dredger.

Once the holding tank is full, the dredger transports the material to a designated location, where it can be offloaded and disposed of or reused. This process can be repeated until the entire area has been dredged to the desired depth or level.

Jet suction dredgers are often used in harbor maintenance, where they can remove sediment and debris that has accumulated around piers, docks, and shipping channels. They can also be used in environmental remediation projects, where contaminated sediment needs to be removed from water bodies.

Interested to dredge your Harbor or Marina? Feel free to contact us!

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Customized Cutter Suction Dredgers (CSDs) for Your Dredging Needs

 

A vessel that utilizes a rotating cutter head and suction pipe to excavate and transport sediment and other materials from waterways is commonly referred to as a Cutter Suction Dredger (CSD). These vessels are used in a variety of applications, including port and harbor construction and maintenance, creating artificial islands and beaches, deepening navigational channels, and extracting minerals from riverbeds and coastal areas.

CSDs come in different sizes, from small modular units that can be transported by truck to large ocean-going vessels. Our stationary CSDs are designed for breaking up hard ground, and once the hard layer is cut through, the solid material is transported to the shore or a discharge area.

Our CSDs can be customized based on the dredging depth, working capacity, and discharge distance, with capabilities ranging from 15 meters in dredging depth and a maximum flow rate of 6000 cubic meters per hour. We offer a range of sizes, from 6 inches to 20 inches, and can provide new construction at our shipyard or locally with the customer.

If the customer prefers to build the CSD themselves, we offer support with dredger design and engineering/construction packages, local installation, and all necessary parts packaged in containers for shipping to the customer's overseas yard. Our standard pump selection and system design is based on WEIR production and piping analysis sheets, using Warman dredging pumps.

https://www.oiltech.nl/en/dredgers/cutter-suction-dredger