Vessel Environmental Footprint

Vessel Environmental Footprint

Vessel Environmental Footprint

The Vessel Environmental Footprint (VEF) is a per vessel rating system that measures emissions and sustainability actions onboard a boat, resulting in a rating out of 5. This rating indicates the impact the vessel has on the environment, with 1 being a vessel that produces a significant environmental footprint, and 5 being a sustainable vessel that actively mitigates its impact on the environment.

The system works to reduce the impact the Yacht Charter industry has on the environment, allowing customers to make informed decisions that support green initiatives.

How Does It Work?


Verified Yacht Charter Partners who register to have their vessel's VEF calculated will firstly fill in a comprehensive survey about their vessel. Green Sail will then review and check the details, before providing a breakdown of the yacht's footprint.

The footprint can then be used by the Yacht Charter company to differentiate yachts in their fleet and highlight sustainability efforts onboard specific boats.

Green Sail provides marketing resources including icons and a verified partner profile to assist in promoting the VEF online, on social media and in newsletters.


In order to measure the overall environmental footprint of a vessel we measure four key areas:

  • Emissions produced onboard
  • Power usage
  • Water usage
  • Waste produced onboard

In addition, we also measure elements that are able to offset or reduce the impact made in key areas. These include antifouling processes, the presence of renewable energy sources onboard (such as solar panels and water makers), and whether waste separation occurs to facilitate recycling. Additional operational factors are also taken into consideration, such as how old the vessel is, how frequently it is used and how it is used (i.e. charter or leisure).


Once calculated, each vessel will display their rating online, allowing travellers to make informed decisions about sustainable sailing. The more bars a VEF icon has, the more sustainable the yacht is.

VEF Comparison

Lowest to highest rating

Verified Vessels

View verified vessels by clicking on the company logo below. This will generate the sustainability credentials of each vessel that has been verified by Green Sail.

Interested in rating your vessels?

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