

Heavy Offshore Construction

Setting the standard for offshore construction vessels
Heavy Offshore Construction Vessels are the backbone of offshore projects. These versatile vessels are pivotal in pipeline laying, subsea installations, and heavy lifting operations. When it comes to designing and developing these cutting-edge vessels, Ulstein can be perfect partner. With decades of experience, we excel in crafting tailor-made solutions that maximize efficiency, safety, and environmental sustainability.
As pioneers in offshore vessel design, we remain committed to delivering innovative and reliable vessels that meet the evolving demands of the energy industry.

System integration
Cutting-edge solutions that optimise vessel performance and enhance operational efficiency.
News & featured articles
Turning visions into realities motivates us to keep pushing for progress in the maritime industry.
You can learn more about how we work with our customers to achieve their visions through our stories.

Precision in practice – when experience and teamwork turn the impossible into reality
Guiding a nearly 150-metre-long newbuild vessel out of the dock hall with less than one metre of clearance on each side, while the wind presses from all directions, leaves no room for error. It demands meticulous planning, absolute precision, and a team that knows exactly what to do.

Yno 322, a CSOV newbuild, has been positioned in Ulstein Verft’s dock hall
On 15 November 2025, Yard number 322 was successfully towed and positioned inside the dock hall at Ulstein Verft. The project is progressing according to plan, and key activities are now underway.

More for less - Rethinking offshore wind operations with the SX250 vessel
At Ampelmann’s Walk-to-Work Conference in Rotterdam on 4 November 2025, Henrik Høidal, system architect at Ulstein Design & Solutions AS, delivered a presentation that sparked lively discussions about the future of offshore wind logistics. The topic was the SX250 vessel, a concept challenging today’s thinking on size and operational capability.

Launching the CLV ‘Nexans Electra’ at Ulstein Verft
On 13 November 2025, the Nexans Electra cable laying vessel (CLV) was positioned quayside at Ulstein Verft, marking a major milestone in the vessel’s journey towards completion. During its time at Ulstein Verft, the vessel has been in a roofed, controlled environment, ensuring optimal conditions for work environment and precision painting.

Behind the scenes: The construction of the cable-laying vessel Nexans Electra
The shipbuilding construction of Nexans Electra is approaching its final phase in the dock, before the comprehensive work continues quayside ahead of sea trials in spring 2026. How do you organise a staff of hundreds of workers, subcontractors and suppliers over several months to deliver the project on time and within budget? Join project manager Runar Toftesund at Ulstein Verft for a look behind the scenes.

New Managing Director at Blue Ctrl
The Ålesund-based company Blue Ctrl is making strategic changes to its leadership to strengthen its continued growth and position within the maritime technology sector. On 1 November, Marielle Furnes Mannseth will assume the role of Managing Director of the company.

Aurora Expeditions: Redefining small-ship exploration with X-BOW® designs
Aurora Expeditions welcomed its third X-BOW cruise vessel, Douglas Mawson, in September 2025. “Many of our guests have travelled on other expedition ships before and immediately notice the difference. Whether it’s sleeping better at night, feeling less vibration during lectures, or spending more time in observation areas, the design truly enhances the experience,” says Katie Malone, Chief Marketing Officer at Aurora Expeditions, when commenting on the X-BOW design feature.

Ulstein Group awarded IDC’s ‘Teamwork of the Year 2025’
Ulstein Group received the 'Teamwork of the Year 2025 Award' at the IDC conference in Ålesund on 16 October 2025. The jury stated that: "Ulstein Group has built a culture where all disciplines are equally valued. The results speak for themselves: forward-looking vessels that meet both commercial and societal goals. Ulstein demonstrates how interdisciplinary collaboration can lead to groundbreaking solutions in the maritime sector, showcasing a strong ability to bring together designers, engineers, and key personnel in developing holistic concepts that combine technology, function, and aesthetics. Collaboration across disciplines and stakeholders – from local partners to international clients – drives innovation with global impact."

Efficient mobilisation at short notice: Edda Freya at Ulstein Verft
In October 2025, Edda Freya called at Ulstein Verft for a mobilisation on very short notice. In addition to several minor tasks, the vessel's crane, weighing 350 tonnes, needed to be relocated.
Events & conferences
We will be attending many events and conferences, which can be an excellent opportunity to meet. See if we are participating in any upcoming events you are going to.







