Suction sails for vessels

Increase profits and drive decarbonisation

Discover our eSAIL® technology

Fuel consumption reduced

up to 40%

Payback

< 5 years

Autonomous operation

No crew needed

The switch to low-carbon fuels, the application of technical and operational optimization methods and the adoption of new technologies to reduce emissions without impacting your economics can feel overwhelming.

What if we told you that there’s a solution that makes your route to sustainability profitable? One that involves going back to the origins of shipping and harness the power of wind.

What wind propulsion

could do for you

Yes, wind propulsion – a simple solution that served humanity for thousands of years – can help you gain:

More Profits

You have the flexibility to speed up or down if the market requires it. In the end, both options have a positive impact on your bottom line. If that wasn’t enough, you can also generate tradable carbon allowances.

More compliance

The use of wind power as an auxiliary source of propulsion reduces the ship’s reliance on fossil fuels, contributing to lowering its emissions and helping you achieve EEXI and CII compliance.

More sustainability

By reducing the amount of fuel burnt you can generate a positive impact on the environment. This, in turn, can improve your market reputation and make you more attractive to customers and financiers.

So many great reasons

to love our eSAIL®

Our suction sail – named eSAIL® – combines the advantages of rigid wing sails and rotor sails, avoiding its disadvantages.

Here’s what people

say about us

Image Astander logo Bound4blue
Image Aarus logo Bound4blue
Image Kyma logo Bound4blue
“The eSAIL produces 6-7 times more lift than a conventional sail, with minimal power consumption and no mechanical complexity (no inertial loads, vibrations, constant movement, etc.) ensuring simple and reliable operations TEST.”

Theatre Vessel

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John Doe

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Albert Ramos

What’s new

alternative fuels in shipping
wind propulsion performance methodology
maritime regulations
ldc installation

17.06.2025

Alternative fuels in shipping: a guide to green potential

Read more

05.06.2025

bound4blue secures DNV validation for wind propulsion performance methodology, unlocking regulatory and commercial benefits

Read more

10.04.2025

Maritime regulations: four measures for supercharging change

Read more

08.04.2025

bound4blue breaks records with installation of largest ever eSAIL® suction sails on Louis Dreyfus Company’s chartered juice carrier

Read more

25.03.2025

EU ETS explained: what is it, what are the costs, and how can wind help

Read more
alternative fuels in shipping

17.06.2025

Alternative fuels in shipping: a guide to green potential

Read more
wind propulsion performance methodology

05.06.2025

bound4blue secures DNV validation for wind propulsion performance methodology, unlocking regulatory and commercial benefits

Read more
maritime regulations

10.04.2025

Maritime regulations: four measures for supercharging change

Read more
ldc installation

08.04.2025

bound4blue breaks records with installation of largest ever eSAIL® suction sails on Louis Dreyfus Company’s chartered juice carrier

Read more

25.03.2025

EU ETS explained: what is it, what are the costs, and how can wind help

Read more

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