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Jan De Nul selects Ulstein trenching vessel design

Tuesday, March 10 2026

General – Newbuilding

Jan De Nul has selected a customised vessel design from Ulstein Design & Solutions for its latest addition to its offshore fleet.

The realisation of the trenching vessel marks a milestone in the collaboration between two leading maritime innovators. Built at the CMHI shipyard in China, the vessel is scheduled for delivery in 2028.

This custom-designed vessel, with its deck space and deadweight, will support extensive trenching operations.

Subsea trenching is the process of creating a protective channel on the seabed to bury pipelines, power cables, and telecommunication lines.

Ulstein’s vessel design is engineered for modularity, supporting a broad range of offshore sectors, including energy, construction, and deepwater operations.

This version will be purpose-built for subsea trenching, ensuring precision performance.

The ULSTEIN X-BOW hull design improves comfort, reduces wave resistance, and fuel consumption.

The vessel is an Ultra-Low Emission vessel (ULEv). ULEv is a highly advanced dual exhaust filter system which removes up to 99% of nanoparticles from emissions using a diesel particulate filter and a reduction system for nitrogen oxides (NOx).

The system also significantly reduces exhaust gas pollutants. The engines of the vessel can run on biofuel and green methanol, reducing CO₂ emissions.

Jan De Nul will also convert its vessel Henry Darcy into a trenching support vessel equipped with a subsea robot specialised in burying cables in shallow waters.

Related posts:

  1. Jan de Nul orders new rock installation vessel
  2. Launching and docking of two CSOVs at Ulstein
  3. Asso.subsea contracts trenching support newbuild
  4. Steerprop delivers largest Ducted Propulsion Units to Jan de Nul

Filed Under: Design, International News, Jan de Nul, Newbuilding, Trenching, Ulstein Tagged With: Design, Jan de Nul, Newbuilding, trenching vessel, Ulstein

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