50 great ways for the marine industry to reduce GHG emissions – Wärtsilä eBook

51 great ways to reduce greenhouse gas emissions

Download this eBook and you will learn 51 great ways for the maritime industry to reduce its greenhouse gas emissions. 51 excellent ways in one place – from ammonia to zero emission battery operation.

29 Apr 2025 · 23 pages

eBook: 51 great ways the maritime industry could reduce its greenhouse gas emissions

Your improved go-to guide when looking for inspiration on how to cut the greenhouse gas emissions of your vessels. 51 best ways in one place – from ammonia to zero emission battery operation.

Why do ships have to cut greenhouse gas emissions?

Decarbonising maritime operations is the key challenge for the whole industry. Regulations are tightening and many vessels are soon at risk of being non-compliant. If you aren’t doing anything to cut your vessels’ emissions, you are already falling behind.

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Your improved go-to guide when looking for inspiration on how to cut the greenhouse gas emissions of your vessels.
51 great ways to cut vessel emissions - from ammonia to zero emission battery operation.
16 ways to reduce the power needed for propulsion
8 future fuel and power options to cut emissions
3 ways to reduce methane slip when using LNG as fuel
...and 24 more ways to cut vessel emissions

How to cut greenhouse gas emissions from your vessels

Your vessels need to comply with ever-tightening regulations. You need actionable strategies for cutting the vessels’ emissions. This eBook delivers ideas related to propulsion, hybrid solutions, sustainable fuels, and more. You will learn more about each idea, but that is not all. You will also learn about the potential impact of different technologies and solutions. Some ways can achieve 3-5% improvements in efficiency, some 15-20%, or more.

Your vessels need to comply with ever-tightening regulations. You need actionable strategies for cutting the vessels’ emissions. This eBook delivers ideas related to propulsion, hybrid solutions, sustainable fuels, and more.

Tal Katzav, AI Centre of Excellence

"Whether you're a software developer, data scientist, cybersecurity expert, or designer, with Wärtsilä, you're not just working with AI. You're using it to build a more sustainable future."

Harri Seppälä, Product Excellence at Voyage Services

"I’m an already an old geezer. I have over 25 years of design experience and have worked in many startups. Yet the marine industry has been my home for the last 12 years; it’s rewarding to see the impact of the digital product."

How to cut greenhouse gas emissions from your vessels

Your vessels need to comply with ever-tightening regulations. You need actionable strategies for cutting the vessels’ emissions. This eBook delivers ideas related to propulsion, hybrid solutions, sustainable fuels, and more. You will learn more about each idea, but that is not all. You will also learn about the potential impact of different technologies and solutions. Some ways can achieve 3-5% improvements in efficiency, some 15-20%, or more.

Your vessels need to comply with ever-tightening regulations. You need actionable strategies for cutting the vessels’ emissions. This eBook delivers ideas related to propulsion, hybrid solutions, sustainable fuels, and more.

You will get:

Exclusive insights: Learn about the potential impact of each method, with efficiency improvements ranging from 3-5% to over 20%.
Practical solutions: Discover actionable strategies for propulsion, hybrid solutions, future fuels, and more.
Expert insights: Learn how effective collaboration and data optimization can drive significant emission reductions.

When you’re burning thousands of tons of fuel a year, even small percentages of fuel saved will add up. And fuel savings bring emission savings.

51 great ways to decarbonise your vessels

Stay ahead of regulations

The International Maritime Organization has set the net zero goal for the industry by 2050. You can make significant progress using solutions described in this eBook.

Find solutions for your vessels

Whether planning improvements, retrofits, or newbuilds, you will find ideas for every vessel type and operational profile

Discover the 51 options to consider

Your improved go-to guide for inspiration and practical solutions to cut vessel emissions, all in one place.

Frequently asked questions

Who is this eBook for?

Ship owners, operators, technical managers, sustainability officers, and anyone involved in maritime decarbonisation strategy or operations.

Is this resource really free?

Yes! Download and share it with your team to support your decarbonisation journey.

How do I know which solutions are right for my vessels?

This document gives a short summary of 51 different ways that the maritime industry could cut its greenhouse gas emissions. For expert advice, contact Wärtsilä for a decarbonisation assessment.

Discover 51 ways to cut your maritime fleet’s greenhouse gas emissions

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This eBook was first published in September 2023. It was reviewed and updated in April 2025.