Fleet and equipment

Trailing suction hopper dredgers can fill their own holds (hoppers) by sucking material from the seabed using a trailing suction head fitted to pipes that trail over the bed as the ship sails. Read more >>

Dredging with a cutter suction dredger takes place while the vessel is moored with spuds or anchors and consists of powerful cutting action combined with suction. Read more >>

A backhoe is a spud-rigged pontoon with a giant backhoe excavator mounted on it. It is able to dredge a wide range of materials, such as rubble and soft or fractured rocks. Read more >>

Stone-dumping vessels are able to transport large quantities of stone and accurately deposit them at a precise location. The stone is loaded onto the deck and transported to its destination... Read more >>

Fallpipe vessels are able to deposit stone accurately at great depths. The crew use a remote-controlled system to position the end of the fallpipe just a few metres over the placement level. Read more >>

Grab dredgers can dredge material from a stationary pontoon and deposit it in independently operated barges. Read more >>

Sand dredgers are stationary, hydraulic dredging vessels. Instead of scooping, the vessel inserts a suction pipe into the bed to suck up material. This material is then... Read more >>

Bucket dredgers use buckets to scoop material from the bed and haul it up to the surface. The buckets are attached to a chain and graded according to size (200 to 1,000 litres). Read more >>