DOP Dredgers

The right configuration for your dredge job

Versatility is key

DOP Dredgers

The easily adjustable design of DOP Dredgers sets them apart: from sand mining to deep dredging, hydropower dam sediment removal or cleaning remote water reservoirs – all these jobs and many more can be done using the DOP Dredger. This flexible design is based on a number of standard blocks which allows for easy adaptation.

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DOP Dredgers

Flexible design

Two design features stand out for the DOP Dredger: adjustability and modularity. The design is easily adapted to different dredging circumstances. For instance, a ladder extension is available when the need arises to dredge deeper. The modularity is obvious during transport: all units can be containerised or are container-sized to allow for practical transport to even the most remote areas.

Versatility

Single solution for any challenge

Every dredging job is different. At one end of the spectrum there are deep dredging jobs such as sand mining and hydropower dam maintenance. On the other end, there are the shallow water dredging activities. These include slurry pond maintenance, industrial slime reservoir clean-ups, and many more stationary dredging situations where a high volume of dredged material has to be removed. For all of them the DOP Dredger is the solution: the submerged dredge pump ensures a high mixture concentration, and the dredge can be configured and retrofitted following the dredging activities.

Cleaning reservoir sedimentation

Sedimentation at hydropower dams is a natural occurrence. Rivers transport silt, sand and gravel downstream, depositing their cargo at the dam. This leads to clogged inlets, and a gradually growing sludge deposit in the reservoir. This reservoir sedimentation can be tackled using a DOP Dredger. Standard add-ons will increase the dredger’s dredging depth to keep pace with its dredging activities. The same trick goes for inland sand mining deposits which grow in depth over time, or maintenance dredging of industrial ponds.

Cutting edge practicalities

A fixed ladder for cutting compacted sand

A cutter unit to break up compacted soils, combined with a submersed dredge pump directly after it, ensures an effective operation.

Efficiency

The submersed pump ensures a high mixture concentration

The heavy-duty, wear-resistant dredge pump is lowered almost to the riverbed, thus reaching a maximum concentration of the dredged mixture.

Local content

Pontoons can be made locally

The pontoons offer floating capacity for the dredge. All vital components are mounted on deck. Therefore these pontoons can easily be built at the customer’s location.

Hands-on

Limited unit weight ensures practical mobilisation

Remote dredging jobs can be a challenge due to the limited hoisting assistance available. Therefore all components of the DOP Dredge are of limited weight and volume. This makes mobilisation of the dredge straightforward

Key dredging features

Made to fit your job

The DOP Dredger series comes in four types. However, this is certainly not a limitation: the design is such that the components can be seen as building blocks. Do you want to dredge deeper? Add a fore pontoon with a dedicated gantry. Do you want to discharge the dredged sand further away? Add a booster station on deck. As a result, your DOP Dredger will exactly match the job’s requirements.

Isolated job sites

Where is your dredge job?

Many dredge projects are located in out-of-the-way places. Getting the right tools on location could involve lengthy transport over twisting mountain roads, a limited build-up area and a lack of locally available hoisting power. As the modularly designed DOP Dredger is composed of limited-sized building blocks these constraints are easily overcome.

Building blocks

Standard components allow for easy adaptation

The DOP Dredger consists of a number of standard elements. These include the submersed dredge pump with hoisting gear, a diesel hydraulic power pack, winches on a prefabricated frame and a spacious control cabin. Pontoons can be made locally to a design package, or they can be included in the delivery.

Dredging deeper

Unlimited dredging depth

Deep dredging is easy done using a submersed dredge pump, which is lowered down. Deploying a hoisting cable as the connection, the dredging depth is flexible. The unlimited mining tool can reach a depth up to -100 metres below the water surface. The powerful sub pump easily brings the slurry to the water level.

Maximising reliability

The DOP pump is a proven asset

In the end it is the reliable operation of your dredger that counts. The key to reliability is the dredge pump that is used. There is no reason for hesitation as the submersed slurry pumps used here are all DOP pumps. Hundreds of this type of dredging pump have been sold over the past decades. Robust and designed for practical maintenance, they will prove their worth on your job.

Discover our DOP Dredgers

Available as a mining tool and deep dredger, depending on your requirements.

Ready to build your DOP Dredger?

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Get inspired

DOP Dredgers

Dop becomes first locally built dredger in Argentina

SPI Servicios Portuarios Integrados for Mar del Plata port in Argentina has acquired a DOP Dredger component package from Damen Shipyards Group. The Argentinian shipyard will build major components and assemble the dredger. The DOP Dredger 250 will be used to dredge underneath a floating dock, which the shipyards wants to keep operational full-time. The trick is that the dock will remain in place during the dredging activities.

Damen dredging equipment launches new DOP Dredger series

Damen Dredging Equipment has launched a new DOP Dredger Series following the success of the DOP submersible dredge pump, which has proved its versatility across the globe. Damen has built more than 20 DOP dredgers on a one-off basis and at least 380 DOP pumps. The DOP submersible dredge pump has been such a great success over the last 25 years because of its simple concept, which is based on a well-proven dredge pump, directly driven by a hydraulic or electric motor, assembled in a rigid housing with the ability to attach all kinds of specialised suction devices, such as mining heads or cutter units. Moreover, the DOP can easily be connected to excavators, cranes, etc.

Damen DOP Dredger cleans up a reservoir

Modular dredger shipped to the Andes Reservoirs are notoriously tricky to maintain: from the surrounding area plenty of sand and silt is brought in by the river and the material deposits at the dam. As reservoirs are usually rather deep, dredging can be quite a challenge. For the Tablachaca dam in Peru another challenge was added; the location high up in the Andes required a modular dredger due to transport restrictions. The DOP Dredger proved to be the perfect solution.

CUSTOMISED DREDGING SOLUTIONS

Your partner in dredging

Dredging requires more than a good dredger. It requires crew training, it requires dredge piping and it requires project management. Damen can help you start up your project, and we are also there for you during the full lifecycle of your dredger.

Tailored lifecycle support

Whatever maritime sector you work in, Damen Services is there for you 24/7. Always on standby.

Built at the location of your choice

You don’t have to build a Damen vessel at a Damen yard. We can support construction at any yard in the world.

Level-headed financing solutions

We provide a wide range of financing arrangements for all types of Damen vessels, equipment and products.