The instrument, originally founded by the Yacht Club de Monaco in partnership with Credit Suisse (now part of UBS Group), enables yacht owners, captains, shipyards, marinas and financial institutions to move from intention to measurable, comparable and actionable environmental performance. It focuses on CO2 emissions—certified by Lloyd’s Register—as well as air quality (NOx and particulate matter) and underwater radiated noise. Discussions began in 2025, when a JMBA delegation visited the Yacht Club de Monaco, identifying strong alignment with the SEA Index approach. This was formalized during a signing ceremony held on April 15, 2026, in Monaco.