An important milestone in N Sea's ambition to reinforce our leadership in integrated subsea and survey solutions is marked by the construction of the Dominus.

A long-term charter agreement has been signed by subsea services specialist N-Sea Group and Dutch shipping and service provider Rederij Groen for the newbuild offshore support vessel Dominus.   is constructing the vessel at Shipyard De Hoop in Tolkamer, the Netherlands. The project reached an important milestone in the final week of February with the keel laying ceremony, which marked the official start of full construction. Dominus is scheduled for delivery in April 2027.

"Our continued commitment to operational excellence and sustainable maritime solutions is reflected in this milestone," it was said by Erik Groen, owner of Rederij Groen. "By combining innovation with decades of maritime expertise, we are proud to support our valued partner, N-Sea, and contribute to a stronger, more resilient maritime sector." To further reduce emissions, we will install highly efficient Tier 3 engines with diesel-electric propulsion. We have also carefully considered ways to further improve the safety and well-being of the crew. These efforts are entirely in line with the sustainability ambitions of both Rederij Groen and N-Sea.”

At Shipyard De Hoop

"Here at Shipyard De Hoop, we believe that strong partnerships are the foundation of successful projects. Our collaboration with PASSER enables us to combine innovation, experience, and precision engineering. We look forward to seeing this vessel take shape and continuing our long-term 

The contract is a significant achievement

"Rederij Groen and N-Sea are sincerely thanked by Lars-Fredrik Bakke, CEO of PASSER, for the trust that has been placed in us," it was said. "This contract is a significant achievement for our teams working across companies and borders. Together with Shipyard De Hoop, we look forward to delivering this vessel as one team."

The Dominus

Notably measuring 69.85 meters in length, 15.77 meters in beam, and 4.50 meters in draft, the Dominus is engineered to support safe and efficient operations in the demanding North Sea environment. It will be equipped to perform a wide range of advanced geophysical and subsea activities, including 2D/3D seismic surveys and wide swath UXO surveys. Its spacious deck layout, lifting capacity, and midship moonpool provide a strong foundation for significantly expanding N-Sea’s geotechnical capabilities and enhancing the company’s integrated site investigation offerings.

An important step in N-Sea's long-term fleet strategy

An important step in N-Sea's long-term fleet strategy is represented by the addition of the Dominus, and the company's continued commitment to expanding and modernizing its dedicated tonnage is demonstrated. This investment follows the delivery of the Geo Master survey vessel in April 2026 and the Altera cable installation and repair vessel in June 2026. These vessels will further strengthen N-Sea’s position as a leading provider of integrated subsea, survey, and cable repair solutions in the offshore energy sector.

An important milestone in N Sea's ambition

"An important milestone in N Sea's ambition to reinforce our leadership in integrated subsea and survey solutions is marked by the construction of the Dominus. This vessel will enable us to expand our geophysical and geotechnical capabilities and execute increasingly complex offshore projects with confidence. We are proud to collaborate with our partners on a vessel that will strengthen our fleet for decades to come.” —Patrick Defilet, Director of Survey at N-Sea Group

About N-Sea

 N-Sea Group is a privately owned company headquartered in the Netherlands, with more than 500 people working offshore and onshore, on board vessels and in facilities across Europe and the Middle East, and a revenue of €200M in 2025. It is an end-to-end subsea services provider. With a fleet of 14 multi-purpose vessels and a range of in-house systems and equipment, N-Sea delivers smart, fit-for-purpose solutions for subsea infrastructure projects in every stage of the offshore asset lifecycle for customers in the international offshore energy industry.Thier bespoke solutions focus on a specific subsea capabilities, such as survey, UXO ID & clearance, cable installation & repair, or IRM, construction & decommissioning

With the support of an experienced, multidiscipline offshore operations team, we integrate these bespoke capabilities into a single project, delivering a smart, fit-for-purpose, safe and sustainable solution that improves the efficiency of subsea projects and reduces projects risks for our customers.

Source : Press - Release

# N-Sea Group #Dominus #Geo Master survey vessel #Rederij Groen #PASSER group #Lars-Fredrik Bakke #Shipyard De Hoop #offshore support vessel