SEA Index®️ Now Certifies CO₂ Scores Across All Yachting

The SEA Index is becoming a standard for the entire recreational boating industry

The SEA Index, a carbon rating benchmark originally designed for large yachts, is extending its criteria to cover the entire yachting market. Motor yachts, sailing yachts, charter units and privately managed vessels now fall within the scope of this CO₂ assessment.

This broader scope changes the landscape for industry professionals. Carbon transparency, once limited to a few high-profile fleets, is becoming a standard expected across the whole market.

Carbon transparency is becoming a business criterion

Charterers, brokers and port authorities are no longer satisfied with general statements about decarbonisation. They expect measurable, comparable scores that can be used in charter negotiations or to secure access to certain berths.

For a fleet manager or captain, this means a strong SEA Index rating becomes a concrete commercial argument. Conversely, a poor score can now weigh on a vessel's value or its appeal to charterers.

HVO: an immediate way to improve your CO₂ score

Without engine modifications or heavy investment, HVO (hydrotreated vegetable oil) works as a drop-in fuel, replacing conventional marine gasoil directly. It allows an immediate improvement in a vessel's CO₂ score, ahead of any longer-term transition solutions.

Depending on the feedstock used and the calculation methodology set out in the RED II / RED III directives, using HVO can reduce greenhouse gas emissions by up to 90%.

This reduction is reflected directly in the SEA Index score calculation, without waiting for fleet renewal or new engine technology. It is a lever available today for owners looking to get ahead of charterers' expectations.

Verifying and tracing fuel is becoming essential

The challenge is not just finding HVO: it is being able to prove its origin, compliance and full traceability, a requirement now central to standards such as the SEA Index. Heeding connects fleet managers with certified sustainable fuel producers and distributors.

• Simplified access to HVO volumes certified under RED II / RED III
• Full traceability documentation for every delivered batch
• Direct connection with qualified suppliers
• Support in presenting the improved CO₂ score to charterers

This approach allows captains and fleet managers to focus on operating the vessel, without having to manage the administrative complexity of fuel supply chains themselves.

Anticipate the SEA Index to gain a head start

The extension of the SEA Index to all yachting marks a turning point: carbon transparency is becoming a selection criterion, on par with comfort or equipment. Fleets that anticipate this shift gain a measurable edge on the market.