Go to: Special Projects | Sand extraction | Dredging


Project Oldbury (ENGLAND)

Quatinty: 25.000 m3 (2x a year)
Depth: variable from ca. 2 meter to ca. 6 meter
Machine: Adriaan
Press distance:1.000 Meter and 15 Meter height difference

Twice a year our company dredges on the River Severn nearby the Oldbury Power Station. This guarantees that the Nuclear plant in Oldbury receives a plentiful supply of cooling water which it requires. This work is carried out with a tidal range of 10 meters.

Leiderdorp (NETHERLANDS)

Quatity: 90.000 m3
Depth: variable from 5 Meter to ca. 11 Meter
Machine: Leendert
Press distance: Up to 2.500 meter

Here the sand from the excavation for the underpass of de Oude Rijn was dredged. The design of the excavation is below superelevation and alignment. The design of the cofferdam is approximately 70 cm above groundwater level. The soil at 15 cm accurately completed. After completion of the work, the cofferdam was measured and delivered using own survey equipment

Walldorf (GERMANY)

Quatity: 5.000 m3
Depth: variable from 5 Meter to 10 Meter
Machine: Leendert
Press distance: Up to 250 meter

Because of the poor water quality the swimming pool in Walldorf had to be dredged. Minimum disposal area. By dredging with a minimal amount of mass to be pumped, and the inventive design of the bulk material, the small dumping area was sufficient. By applying the Leendert with the appropriate software and positioning, the cutter was kept at the correct height.

Meyerwerft (GERMANY)

Quantity: 50.000 m3
Depth: 11,50 meter
Machine: Adriaan and Pieter
Press distance: Up to 1.000 meter

For the renewal of the dock of the Meyer Werft we have the cofferdam dredged for extension. Before starting our work already to 2.5 meters Franki piles made ‚Äč‚Äčthat 2.5 meters above our design sticking. Dredged at an accuracy of 15 cm. GPS location was not possible due to the under construction roof extension over our work. After execution of the work we have our own survey equipment the cofferdam checked and completed.


Bielefeld (GERMANY)

Quatity: 600.000 m3
Depth: 17 Meter unterhalb des Wasserspiegels
Machine: Koen
Press distance: up to 500 meter

Here we have for the construction of a new bypass around Bielefeld 600,000 m3 of sand extracted from a site near Bielefeld. The minimum production was 10,000 m3 per week and the sand was immediately removed by the client. For this we have 3 deposit furnished and continuously changed from bulk to the client to allow the sand to drain. During the progress of the work, we have slopes with the help of a cutter dredger finished.


Quatity: 200.000 m3
Depth: ca. 17 Meter under waterlevel
Machine: Koen
Press distance: Up to 500 meter.


Quatity: 300.000 m3
Depth: 20 Meter under waterlevel
Machine: Saerbeck
Press distance: Up to 1.500 meter

For our client is about 300,000 m3 of sand extracted in 2 phases. The sand lies mainly on the slopes.

Vennebrugge (GERMANY)

Qauntity: 1.000.000 m3 (spread over multiple years)
Depth: ca. 25 under waterlevel
Machine: Saerbeck
Press distance: Up to 500 meter

For our client is about 300,000 m3 of sand extracted in 2 phases. The sand lies mainly on the slopes.



Quantity: 20.000 m3
Depth: ca. 3 meter
Machine: Pieter
Press distance: 700 meter

Here we have a sludge collection of a stream dredged. The dredging we have a pasture sprayed deposit, then it is reused.


Quatity: 60.000 m3
Depth: ca. 3,45 meter
Machine: Gerritje and Christiaan
Press distance: max. 4.500 meter

Here we have the Linde dredged using two cutter suction dredgers. The width of approximately 30/35 times in 1 meter was fully taken into account. After the completion of the work we made an survey with own equipment and in conjunction with the client and delivered by us.

Lydney (ENGLAND)

Quantity: 16.000 m3
Depth: variable to ca. 5 meter
Machine: Adriaan
Press distance: ca. 500 meter

Our company dredged an out of service lock in Lydney England. Due to the fact that it had not been in operation for a length of time the lock and chamber had filled up with the silt from the River Severn rendering it unuseable. We used a system whereby we injected the sludge back in the River during the dredging. We our pleased to announce that after our work the Lock is once again fully operational.