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Essential solutions for naval architects and ship designers

Discover the best engine specifications, data and insights for ship designers. Access Wärtsilä’s comprehensive guides, tools, and advanced technologies for optimal vessel design.

Essential specifications and resources for ship designers

Learn more about the latest solutions and technologies and really shine in front of your customers. You can ensure optimal vessel design and best service with the help of this information.

Insider’s guides for optimal vessel design

Explore our practical guides, created to help you make confident, data-driven decisions throughout the vessel design process.

Insider’s guide to ship engines: 11 practical tips for evaluating engine specs

How to compare ship engines

Evaluating competing claims and data from different manufacturers can be challenging. This guide gives you expert advice on comparing marine engine specifications, understanding manufacturer claims, and choosing the best engine for your vessel’s lifetime.

Get 11 actionable tips to help you avoid common pitfalls and optimise your engine selection.

Insider’s guide to ship propulsion: 8 tips to help you make the right choices

How to optimise your vessel’s propulsion system for real-world performance, energy efficiency, and lifecycle cost. This guide covers the key questions to ask, common mistakes to avoid, and how to future-proof your design for evolving regulations and fuels.

Explore the handy engine configurator

Use this handy tool to identify the perfect engine for the vessel you want to design. You can find the right engine in a few easy steps!

Configure now

Wärtsilä employees in front of an engine

Flexible engine solutions for optimal designs

Wärtsilä’s flexible engines are an excellent starting point when designing a vessel. Whether you need a diesel-mechanic, diesel-electric, or hybrid solution, we have the data and supporting information you need.

Start from the most popular engines

Wärtsilä 25

Wärtsilä 25 is a medium-speed, modular 4-stroke marine engine available in diesel, dual-fuel LNG and in dual-fuel ammonia version.

  • Ship engine specs: High efficiency, low fuel consumption, low emissions, flexible fuel options
  • Power output range: 1.7 - 3.4 MW
  • Reference: James Fisher and Sons PLC tankers

Wärtsilä 31

The Wärtsilä 31 holds the Guinness World Record for the most efficient 4-stroke diesel engine. It is available in diesel, dual-fuel LNG and in pure gas versions and it is perfect for ferries, luxury cruise ships and fishing vessels.

  • Ship engine specs: High efficiency, low fuel consumption, low emissions, flexible fuel options
  • Power output range: 4.6-10.4 MW
  • Reference: Aurora Botnia ferry
3D rendering Wärtsilä 31 marine engine

Wärtsilä 46TS-DF

The Wärtsilä 46TS-DF is a two-stage turbocharged dual-fuel engine which offers superior performance. It is perfect for cruise ships and large ferries, and also serves as a modern, future-proof main engine for merchant vessels.

  • Ship engine specs: Dual fuel, high power density and efficiency, two-stage turbocharging, low fuel consumption, low emissions
  • Power output range: 7.8-20.8 MW
  • Reference: Royal Caribbean Cruise ships
3D rendering Wärtsilä 46TS-DF marine engine

Wärtsilä 32 Methanol Engine

The Wärtsilä 32 Methanol Engine is designed for efficient operations on a wide range of liquid fuels from heavy fuel oil to methanol. It is a perfect auxiliary engine for methanol-fuelled container vessels.

  • Ship engine specs: Fuel flexible from HFO to methanol, low emissions, high efficiency
  • Power output range: 7.8-20.8 MW
  • Reference: COSCO container ships
3D rendering Wärtsilä 32 Methanol marine engine

Get technical data to help you design Wärtsilä marine engine installations:

Browse the complete portfolio of ship engines

Other advanced technologies for modern vessels

Stay ahead with the latest technologies such as NextDF, energy-saving technologies, and hybrid solutions. These innovations not only enhance performance but also contribute to sustainability and cost-efficiency.

Engine references

Discover the benefits others have already gained from marine engines from Wärtsilä.

  • Louis Dreyfus Armateurs new RoRo vessel
    Louis Dreyfus Armateurs

    Methanol engines mean big cuts in emissions for Louis Dreyfus Armateurs‘ RoRos

    Read more about methanol engines
  • Van Oord

    Van Oord is accelerating the energy transition with its green ship fleet. Why did they choose methanol for their new offshore wind installation vessel?

    Read more why they choose methanol
  • Erik Thun AB

    Erik Thun Group’s four coastal tankers benefit from the Wärtsilä 25 engine and can achieve high environmental performance in the long term.

    Learn more
  • detail image of cruise liner with rescue boats
    Royal Caribbean Group

    When Royal Caribbean Group became the first customer for the new Wärtsilä 46TS-DF engine, they knew the rewards it could bring. But what was needed to make sure that the engine’s full potential could be realised?

    Open the case study
  • Fure Viten

    With a range of integrated Wärtsilä solution onboard, Swedish tanker Fure Viten has already surpassed the IMO’s 2050 emissions targets.

    Read more about energy-saving devices
  • Le Commandant Charcot

    Le Commandant Charcot, the world’s only luxury icebreaker, uses the Wärtsilä 31DF engines for sustainable polar exploration

    Read more about Wärtsilä 31DF engine with hybrid operation
  • SAL Heavy Lift

    Wärtsilä hybrid propulsion system with methanol engine to power four future-proof heavy lift vessels

    Discover the Wärtsilä 32 methanol engine
  • Tugs Jin Gang Lun 31 & 32

    The Jin Gang Lun 31 and 32 are the first two tugs in Tianjin Port powered by a set of Wärtsilä’s highly efficient W20 engines.

    Read more about the Wärtsilä 20 engine

Frequently asked questions

What are the latest innovative technologies in marine engine and propulsion systems?

Wärtsilä emphasises cutting-edge solutions such as NextDF technology for cutting methane slip, hybrid solutions, energy saving technologies and integrated vessel solutions. The innovations boost both performance and sustainability because they

  • deliver fuel flexibility, thus effectively future-proofing designs
  • reduce greenhouse gas emissions
  • improve operational efficiency
  • help achieve optimal lifecycle cost

What are the typical specifications of Wärtsilä’s marine generator sets?

Wärtsilä offers a range of modular medium-speed generator sets (“gensets”) across engine series such as Wärtsilä 25, Wärtsilä 32, Wärtsilä 34DF, and others. There are diesel, dual-fuel and alternative fuel (LNG, ammonia, methanol) configurations.

Wärtsilä marine gensets and auxiliary engines deliver efficient, IMO Tier III-compliant auxiliary power and diesel-electric propulsion for a wide variety of vessel types.

Which engine manufacturers offer future proof fuel flexibility for newbuilds?

Wärtsilä leads the industry in providing future-proof solutions for the maritime industry. The portfolio includes fuel-flexible engines and versions that are ready for introducing future fuels. This enables ship designers to specify power systems that are resilient to evolving regulations and fuel markets.

How do I effectively compare marine engine specifications across manufacturers?

Wärtsilä offers practical tools and guidance to simplify engine specification comparison. You can, for example:

These resources help you be more informed when selecting an engine early in the vessel design process.

Ready to optimise your vessel design?

Wärtsilä’s innovative engines, technologies and expert tools are designed to help ship designers deliver outstanding results for their customers. Connect with a Wärtsilä specialist for tailored advice and solutions.

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