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Our field of expertise

Engineering support

The Fehmarnbelt Tunnel is a long-term project where Saltwater provides on-site support in Denmark. It’s set to be the world’s longest immersed tunnel at 18 kilometers, linking Rødby (DK) with Puttgarden (D), supporting rail and road transport. Scheduled for public use in 2029, it marks a major leap in connecting Europe’s infrastructure.

 

The tunnel consists of 89 segments, manufactured in a dedicated factory on the quay. These segments are transported to a dry dock, floated to position, and submerged. For the construction assets, we designed boat landings for safe crew transfer. To ensure crew and MOB vessel safety, we implemented protection roofs, considering davit system compatibility. Additionally, fire control plans were updated to meet the latest safety regulations.

 

Custom engineering designs

Our expertise in structural engineering resulted in the development of various grillage solutions for different applications. This included the placement of containers in hard-to-reach locations, the integration of a Launch and Recovery System (LARS) on the deck, and the vertical storage of equipment for long-reach excavators. These solutions were essential for ensuring the efficient and safe use of the assets.

The Fehmarnbelt Tunnel

Safe operations on land

In addition to maritime solutions, we also contributed to safety improvements on land. Several facilities were implemented to support safe operations onshore:

  • Winch test bank: a specially designed testing facility for the safe testing and spooling of winches on the quay.
  • Gangway supports: robust and secure gangway supports ensuring a reliable transition between ship and quay.
  • Additional onshore workshop: a well-equipped and sheltered workspace, allowing employees to work safely and comfortably in all weather conditions.

 

Visiting vessels firsthand adds value by allowing direct observation of engineering challenges and on-the-spot visualization of solutions. We take precise measurements and consider factors like piping and electrical systems, ensuring a thorough understanding. Working on-site also enhances communication with stakeholders, streamlining project execution and minimizing disruptions.

We spend two weeks at a time at the on-site office. During our stay, we can visit the vessel and easily interact with the involved parties. We are proud to be a part of this major project!

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