Close-up of the SOV vessel Windea La Cour, which is servicing the Gemini OWP offshore the Netherlands.


A trusted partner for shipowners and operators empowering the construction, maintenance, and operation of offshore wind farms and oil and gas facilities.

CSOV/ SOV ship designs

Ulstein is a leading designer of Service Operation Vessels (SOVs) and Construction Service Operation Vessels (CSOVs) for the offshore energy sector. Our designs prioritize crew safety, comfort, and efficiency. One of the characteristics of the SOVs and CSOVS is the advanced motion compensation and walk-to-work systems, enabling safe and efficient transfers of personnel and equipment between the vessel and offshore structures. The designs also incorporate sustainable features like hybrid propulsion and energy storage systems, reducing emissions and operating costs. 

Ulstein's vessels are designed to meet the demanding requirements of the offshore industry, delivering reliable and cost-effective solutions to support the development and service of offshore wind farms and oil and gas facilities.

CSOV/SOV portfolio

Proven designs - see our references

Vessel designs for the energy market

Our vessels are designed to operate in the Offshore Energy market (wind, oil and gas), making them a versatile option for companies looking to invest in sustainable energy solutions.

The SX120 design, the Oceanic Vega, met the tropical hurricane 'Igor' on her way across the Atlantic.

Survey and inspections

As a renowned ship designer, we offer innovative survey and inspection vessels. Our designs prioritize efficiency, safety, and advanced technology, ensuring seamless operations. 

You can trust us to enhance your surveying capabilities and your business' success.

The Fortitude is designed for ultra deepwater installation and construction, pipelay and heavy lift support. Photo: Flying Focus.

Construction and installation

We understand the unique challenges of the offshore energy segment. That's why we provide comprehensive support throughout the entire process, from initial design to construction and delivery. 

Our knowledgeable team is always available to offer expert guidance and assistance, ensuring a smooth and successful project.

Acta Auriga offshore wind farm

Operations and maintenance

We have a deep appreciation for the distinctive obstacles faced by the offshore energy sector. This understanding drives us to offer extensive support at every stage, from the initial design phase to construction and delivery. 

Our highly competent team remains readily accessible to provide expert guidance and assistance, guaranteeing a seamless and prosperous project experience.

Ulstein Design & Solutions AS

Ulstein Design & Solutions AS operates out of Ulsteinvik, Norway and develops award-winning ship designs and system solutions. We offer services such as engineering, project management and on-site shipbuilding assistance. 


Osnesvegen 110
6065 Ulsteinvik