Plan Bleu intervened during the symposium “Contribution of Ports to the Ecological Transition” organized on October 15, 2021 by the association V2E and Green Cross France & Territories at the Metropolitan Chamber of Commerce and Industry Aix-Marseille-Provence (CCIAMP), on the occasion of the 4th edition of the Energy and Environment Sailing Meetings. Dr. Céline Dubreuil, our Director of Programs, presented Plan Bleu’s activities in the blue economy sector, in particular the development of guidelines for sustainable cruising and boating in the Mediterranean. This event followed a first webinar organized on May 21, 2021 and for which a summary had been previously published. It continued with two days of eco-regattas organized on October 16 and 17, 2021 at the Union Nautique Marseillaise (UNM).