YC Monaco

sea index®

The first carbon footprint index for superyachts

Launched in 2020

Since its launch in 2020 by Yacht Club de Monaco and Credit Suisse (a UBS Group brand), SEA Index® has established itself as the go-to superyacht environmental impact rating system. Through transparent, unbiased assessment, the SEA Index® allows stakeholders to easily assess and compare a yacht’s environmental impact. This includes through the official SEA Index® certification, verified and issued by Lloyd’s Register, and online tools such as the Lifecycle Emissions Calculator, an operational efficiency assessment method developed in partnership with RINA. Since September 2024, SEA Index® became the first assessment tool to integrate analysis of fuel cell technologies into its CO2 certification. SEA Index® is committed to expanding its offering of tools, and is currently working on ways to measure other greenhouse gases, including NOx emissions and noise pollution. By using globally recognised methodologies and by partnering with maritime class companies, SEA Index® offers a toolkit and network to owners looking for ways to adopt yachting practices that reduce their impact on the environment.

The SEA Index® aims to be the internationally recognized system for assessing the environmental impact of superyachts. With SEA Index® Certification, we are more than ever dedicated to supporting shipowners in their energy transition, enabling them to stay one step ahead of the rest of the fleet.
Bernard d Alessandri, Secretaire general du Yacht Club de Monaco depuis 1984
Bernard d’Alessandri
General Secretary of the Yacht Club de Monaco

SEA Index®: what are the criteria?

Environmental impact is expressed in grams of CO2 emitted into the atmosphere per gross ton per hour, which is representative of the volume of the vessel’s enclosed space. The SEA Index® evaluation system is based on the International Maritime Organisation’s methodology, with specific adaptations for yachts over 24 metres. The process is straightforward and involves submitting a boat’s offical documents, which are then analyzed using the SEA Index® tool.

No. of +24m boats in the world

0 K

Motor-yachts

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Sailing yachts

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New Motor-yachts

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New sailing yachts

©Guillaume Plisson

©Guillaume Plisson

C02 Certification

Since its creation in 2020, 55 yachts

Some yachts that obtained the 3-star SEA Index® certification in 2024:

M/Y Kasper 7 (Benetti, 2023) – 67 m
M/Y 50Steel Almax (Sanlorenzo, 2024) – 50 m

CAPENERGIES label

The CAPENERGIES label, awarded to the SEA Index®, is a significant recognition in the field of energy applied to the maritime industry. It highlights the SEA Index’s® crucial role as a catalyst for sustainability in yachting, while encouraging its adoption by industry leaders.

labellise par capenergies

DID YOU KNOW?

Yachts awarded certification (3 stars or more) enjoy exclusive privileges:

  • Free membership to the Superyacht Eco Association
    for 2024–2025;
  • Discounts on berthing fees at the YCM Marina;
  • Discounts on berthing fees at Monaco’s ports
    (Hercule, Fontvieille, Cala del Forte);
  •  10% discount on insurance rates with Jutheau Husson;
  • Discounts for the entire crew on sustainability training offered
    by La Belle Classe Academy, the YCM’s training center

Contact

Natalie Quevert

Email

n.quevert@ycm.org

Telephone

+377 93 10 63 04