Offshore wind vessels

Contact us

Offshore wind vessels - The journey towards a zero emission shipping

Offshore wind energy is one of the renewable energy sectors best-positioned to benefit from heightened pressures for emission-free, electrical power generation. The increase in offshore wind power around the world brings ever-growing opportunities for vessel owners and operators to maximise profits and grow their business in this industry.

As this market continues to grow so too does the demand for larger, more reliable and more efficient vessels to both construct and service the offshore wind projects throughout their lifecycle. New build wind turbine installation vessels (WTIVs), commissioning service operation vessels (CSOVs) and crew transfer vessels (CTVs) will all be required, as will retrofits of existing CSOVs to serve this expanding market.

For these vessels, the best results over their lifecycle are achieved using Wärtsilä’s integrated solutions and customised designs. For both new-build and retrofit projects, Wärtsilä can deliver a solution that meets your exact specifications and market needs. Benefits include lower operational and maintenance costs, reduced fuel consumption for cost savings and emissions reductions, and complete lifecycle optimisation.

New build solutions

Our integrated systems, solutions and services help to achieve the greatest benefits from our extensive portfolio. We have many decades of experience in ship design, powertrain systems, electrification and energy saving solutions, and know-how to best combine them to create a truly holistic system that delivers significantly higher value than the sum of its individual parts. Early engagement brings the best results, so we are ready to work with you from the start of your project to fully understand your business model, requirements and vessel operating profile. We then use data-driven design to develop the optimal solution for your needs, streamlining the process for both owners and shipyards with our one-stop-shop approach where we ensure everything works together for optimal results. 

  • The power to target net-zero

    Meet the new Wärtsilä 25 engine - maximised flexibility, minimised emissions

    Access now

Complimentary consulting services for integrated solutions

The future of the marine market is becoming more and more complex. And so are the investment decisions that shipowners and operators are faced with in order to future-proof their vessels. The search is on for intricate equipment solutions that can provide improved energy efficiency, or the flexibility needed to utilize alternative fuels. What is more, the components needed to achieve this goal need to work perfectly on their own, but optimally also offer overall performance exceeding the sum of the individual parts - an achievement possible to obtain through integration.

Read more


Upgrades and retrofits

Commissioning Service Operation Vessel

With the growth in offshore wind farm operations there are opportunities available for CSOV owners that are ready to retrofit their vessel to meet the needs of this expanding market. Wärtsilä can provide future-proof solutions that make your vessel more sustainable and energy efficient, helping you meet increasingly strict regulatory requirements while maintaining profitability.

Read more about CSOV upgrades


Lifecycle Services

Wärtsilä Lifecycle solutions take the uncertainty out of marine asset performance, with improved asset availability, optimised operations and maintenance, and sustainable and predictable operations. We use our technology, software and service expertise to maintain and optimise your marine assets, combining our extensive knowledge and experience with the power of AI and predictive analytics to provide peace of mind through long-term service agreements.

Wärtsilä Expert Insight predictive maintenance service as part of the Wärtsilä Lifecycle Agreements


  • Ensured reliability and uptime
  • Faster and better support whenever needed
  • Data driven maintenance based on actual condition
  • Cost predictabilityPerformance guarantees
  • Financing models that share risk and reward

Read more »

The service provides our crews with invaluable support and our organisation with the peace of mind that our assets are protected by the very best in maritime engineering technologies and expertise.

Martin Steffensen, Fleet Manager, Altera Infrastructure

The value of Lifecycle Agreements

Digitalisation and connectivity enables a full range of new services and creating value require analytics and technical experts who can make sense of the data and give actionable advice. Wärtsilä Expertise Centres around the world have this expertise to support, predict and optimise your asset performance. 
Read more about Digitally Enabled Services »


Ships worldwide supported by a Wärtsilä Lifecycle solution


Of customers renew their Lifecycle agreements


Issues are solved remotely


Reduction of unscheduled maintenance

  • Viking-Lady-reference-slide
    Viking Lady

    The Viking Lady platform supply vessel embodies a number of groundbreaking, energy efficient, and emissions reducing technologies.

    Read more
  • Wind Innovation
    Wind Innovation

    Offshore Vessel Conversion

  • Vestland-Cygnus-reference-image
    Vestland Cygnus

    Wärtsilä has supplied the ship design for the ‘Vestland Cygnus’, a Platform Supply Vessel (PSV) owned by Norway based Norside AS that is to be converted to serve as an offshore wind farm service vessel. The conversion took place at the Fjellstrand yard in Norway.

    Read more


14 SEP 2021 Article
6 min read

Helping power the Chinese windfarm construction boom with Wärtsilä transverse thrusters

Wärtsilä’s highly efficient transverse thrusters ensure...
new multi-purpose SOV for offshore wind
12 FEB 2021 Article
3 min read

Wärtsilä’s new multi-purpose SOV for offshore wind – future-proof, flexible and Jones-act compliant

The offshore wind business is booming around the...
11 JUL 2017 Article
3 min read

DEME-d fit for dredging up the future!

"Belgian company DEME and Wärtsilä joined forces to build, at 40 MW, the world’s most powerful LNG-fuelled...
Growth of offshore wind depends on affordable, reliable support infrastructure
22 APR 2020 Article
6 min read

Growth of offshore wind depends on affordable, reliable support infrastructure

The expansion of offshore wind power requires efficient, effective...

Recent webinars

12 OCT 2021 Webinar

The wind of opportunity in the Asian market - Integrated marine solutions for offshore wind vessels

Know how consultative and early engagement...
15 JUN 2021 Webinar

The winds of opportunity - Integrated solutions for offshore wind vessels

Our panel of leading experts will share their insights into the benefits...
6 APR 2021 Webinar

Integrated drive train solutions for high speed craft

06 April 2021 - MEA session
Offshore wind farm
11 MAR 2021 Webinar

The winds of opportunity - Optimising propulsion for next generation windfarm vessels

The growing demand from offshore operations, particularly wind...

Press releases

Wärtsilä Marine. Let's connect.