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Engines & generating sets

Powering your fleet

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Engines & generating sets - 
the highest efficiency for marine applications

Wärtsilä is continuously developing its portfolio of gas and multi-fuel engines to suit different marine applications, be that offshore oil and gas installations where gaseous fuel is available from the process, or a merchant vessel operating in environmentally sensitive areas. The Wärtsilä engines offer high efficiency, low exhaust gas emissions and safe operation. The innovative multi-fuel technology allows the flexibility to choose between gas and liquid fuel. When necessary, the engines are capable of switching from one fuel to the other without any interruption in power generation.

The design of the Wärtsilä engine range is based on the vast amount of knowledge accumulated over years of successful operation. Robust engines derived from pioneering heavy fuel technology have been engineered to provide unquestionable benefits for the owners and operators of Wärtsilä engines and generating sets.

  • The power to target net-zero

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

    Access now

Our solutions 

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Customer references

  • Voyager


    The Voyager is deployed in the Irish Sea. Pelagic trawlers are huge vessels built for deep sea fishing, with facilities for keeping the catch fresh over prolonged periods at sea. The hull is designed to ensure safety, and to give good fuel efficiency and high speed.

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  • Quantus


    The Quantus is a modern trawler designed and built for efficient fishing. The vessel incorporates a number of innovative ideas, including a new hull form designed to combine optimum steaming and towing characteristics with fuel efficiency.

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  • Libas


    The Libas, delivered 2004, is a combined purse seiner and trawler designed by Wärtsilä Ship Design for the future needs of the global pelagic fleet.

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  • Molslinjen-ferry-1138-420

    Express 4

    High-speed RoPax ferry with a compact axial flow jet solution

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  • RRS Discovery

    RRS Discovery

    The Royal Research Ship Discovery is designed to support the multidisciplinary research required for the 21st century. The ship is the fourth vessel to bear the name and continues the tradition of oceanographic research at sea.

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Decarbonising maritime will take more than technology
18 MAY 2021 Article
3 min read

Decarbonising maritime will take more than technology

The maritime industry's discussion of decarbonisation thus far has focused upon uncertainties,...
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Forecasting the fuels of the future

The findings of a new fuels forecast developed by Wärtsilä over the past year highlight growing demand for fuel...
3 SEP 2019 Article
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Introducing Wärtsilä 31DF – the most efficient multi-fuel engine for flexible and reliable power generation

In the highly competitive electricity...
Wärtsilä 14 and Wilmer Wahlstedt
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A tradition of innovation in engine design

This year has been a very special year for Wärtsilä. While the company turned 185, it was also the 60th...
Wärtsilä 31
1 JUN 2015 Article
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Wärtsilä 31 – the most efficient engine in the world

The Wärtsilä 31 marine engine sets the standard for energy efficiency. It has the lowest fuel...
Long live the combustion engine
13 FEB 2020 Article
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Long live the internal combustion engine

While the maritime sector looks for ways to combat emissions, some experts are going back to the basics to...

Recent webinars

Wärtsilä 46TS-DF - The power to change
26 APR 2022 Webinar

Wärtsilä 46TS-DF – The power to change

Wärtsilä 46TS-DF represents the next generation of medium speed engines, designed to set a new benchmark in...
22 MAR 2022 Webinar

Wärtsilä 32 methanol – The power to reach carbon-neutral​

26 MAY 2020 Webinar

Fuels for the future: the steps towards zero emission shipping (MEA session)

Biofuels and hydrogen-based fuels are needed to decarbonise the...

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