Sixteen teams from 11 nationalities are competing in the Energy Class for which organisers supply a one design catamaran hull to competitors who must select an energy solution and design an emission-free propulsion system. The one major constraint is the maximum quantity of energy they can use, set at 10kWh for this edition, and they have to design a high-performance cockpit in a sustainable way that optimises the life cycle of all the materials. The Solar Class which has been in from the start will give free rein to 16 teams and their solar-powered boats. And last but not least, the Open Sea Class, mainly open to exhibitors in the YCM Marina and units already on or about to enter the market, turns the spotlight on boats responding to the United Nations’ “net zero emission” pledges to avoid the most serious effects of climate change and maintain a habitable planet.