The Fehmarnbelt tunnel trench dredging project

A fixed and direct transport connection between Scandinavia and Central Europe has been an enduring vision for many decades. This vision is about to be realised with the construction of the Fehmarnbelt Fixed Link, an 18-kilometre-long immersed tunnel between Rødbyhavn in Denmark and Puttgarden in Germany. When it opens in 2029, the tunnel will be the longest immersed tunnel in the world combining a dual railway and motorway connection. This article provides insight into the improved dredging equipment used and the methodology specially adapted and further developed to the project’s requirements.

Geotechnical & Geophysical Investigations for Offshore and Nearshore Developments

A handbook providing geotechnical and geophysical data acquisition techniques for characterising offshore and nearshore soil conditions. Download Click here to download the PDF 'Geotechnical &am

Vertical or Wick Drains

Prefabricated vertical drains (PVDs) or Wick drains are applied in areas where loose, compressible, water-saturated soils make the soil unstable.

Underwater Placement in Bulk of Fill Material

Underwater placement of fill is usually performed by trailing suction hopper dredgers and barges by opening their bottom doors or by split hull vessels.

Subsea Rock Installation

Subsea rock installation is a technique used for rock placement to protect marine infrastructure, especially for offshore oil, gas and wind energy projects.

Soil Improvement

Soil improvement is applied to both consolidate existing loose subsoils and sometimes specifically for compaction of newly reclaimed soil.

Hydraulic Fill

Hydraulic fill is material that is dredged from a borrow area or other area and placed at a site to raise the level of the land or build new land.

Land Reclamation

Land reclamation is the process of creating new land by raising the elevation of a waterbed or low-lying land or by pumping water out of muddy morass areas.