ULSTEIN Navy2025 Dec25 SB Duo

Ulstein designs for the standardised naval auxiliary vessels

With over a century of shipbuilding heritage, Ulstein is a vital part of the Norwegian maritime cluster, synonymous with innovation in ship design and the engineering that follows. From offshore vessels navigating the harshest seas to expedition cruise vessels exploring the polar regions, the company has consistently proven its ability to deliver advanced, reliable platforms. 

This experience forms the backbone as Ulstein now develops concepts for standardised naval vessels for the Royal Norwegian Navy. The ships will meet the Navy’s need for advanced, reliable and efficient vessel platforms.

Published
18 December 2025
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Experience and philosophy

Every vessel from Ulstein is the result of engineering excellence combined with a philosophy that emphasises functionality, modularity and standardisation. The goal is to create platforms that can be adapted to a wide range of missions, from surveillance and logistics to search, rescue and NATO operations. 

ULSTEIN Navy2025 Dec25 SB Duo

Design strategy and key features

The design strategy behind these concepts is to develop an efficient maritime platform with a flexible deck arrangement that can be tailored to the varied mission requirements the vessels will face throughout their service lives. Adaptability is a fundamental premise, and the concepts are designed to be easy to maintain, upgrade and update, enabling them to meet future needs effectively. 

Some of the unique features of these concepts include:

Flexible platform deck:
An open aft deck provides space for versatile configurations, while the integrated skidding transport system enables rapid mobilisation and demobilisation of equipment, goods and components.
Outstanding seakeeping
The X‑BOW® is a proprietary hull design that delivers superior seakeeping, reduced fuel consumption and lower emissions. This ensures efficient operations regardless of weather conditions, reduced noise and improved comfort for crews.
Energy-efficient operations:
The ULSTEIN® POWER VSG is a propulsion and energy solution offering high operational flexibility and energy efficiency. This solution supports both current requirements and future demands for energy-efficient operations.
Safe, comfortable and attractive working environment:
As civilian as possible: Recruitment is critical to secure the future operation of these vessels. The ships are designed for minimal motion, and cabins and common areas are close to commercial standards to enhance the vessel’s attractiveness as a workplace.
N Xyyy Navy v3 Nov25 In A Ir SB Aft Above

Capacity and delivery

Ulstein combines solid technical expertise with the ability to develop new practical solutions. Founded in 1917, Ulstein has a proven track record of more than 300 newbuilds. Since introducing its new design series in 2000, the company has delivered over 50 vessels from its own yard and more than 100 through partner yards worldwide, demonstrating the capability, capacity and reliability to provide complex vessel solutions at scale.

The ambition behind developing these standardised vessels is not only to supply 28 ships to the Norwegian Navy, but to establish a new standard for naval operations and strengthen Norway’s shipbuilding industry.

  • N Xyyy Navy Nov25 Sea SB Side
    Standardised vessel, 96 metres. Mobilised for mine clearance and autonomous operations with a protected aft deck.
  • N Xyyy Navy v2 Nov25 Sea SB Side
    Standardised vessel, 96 metres. Mobilised for mine clearance and autonomous operations.
  • N Xyyy Navy v3 Nov25 Sea SB Side
    Standardised vessel, 96 metres. Mobilised for surveying and monitoring. Aft ramp for large USV.
  • Navy Small v1 MIL Nov25 Sea SB Aft
    Standardised vessel, 57 metres. Mobilised for autonomous aerial surveillance.
  • Navy Small v2 MIL Nov25 Sea SB Aft
    Standardised vessel, 57 metres. Mobilised for underwater surveying and monitoring.
  • Navy Small v3 MIL Nov25 ORO Sea SB Aft
    Standardised vessel, 57 metres. Mobilised for oil spill response.

Norwegian identity and strategic value

Ulstein is rooted in Norwegian competence and innovation. With experience in advanced commercial ship design and the ability to meet military requirements, Ulstein develops vessels that deliver flexibility, readiness and long service life.

For the Navy, this is not just about new ships. It is also about securing a fleet tailored for future operations.

Ulstein looks forward to further developing these concepts together with the Norwegian Coast Guard and the Royal Norwegian Navy to realise a series of standardised naval vessels with commercial solutions.

Get in touch

Lars L Olsen DSC4221 compbw

Lars Lühr Olsen

Description
Managing Director
Affiliation
Ulstein Verft AS

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Press Release

Shipyard collaboration on standard auxiliary ships for the Norwegian Navy

The Royal Norwegian Navy has an ambition to acquire series‑produced, standardised naval vessels. This requires ships that are versatile, robust and future‑oriented, yet cost‑effective to build. Few shipyards in Norway can meet this challenge. Together, Larsnes Mek. Verksted (Larsnes) and Ulstein Group (Ulstein) have extensive experience and strong references in the design, construction, and maintenance of vessels. They collaborate to offer a solution that ensures the efficient production of naval ships. 

Naval