RINA awarded an Approval in Principle (AiP) to DRIFT Energy for a novel vessel concept designed not simply to transport cargo, but to generate and deliver clean energy at sea.The AiP marks what DRIFT claimsis the first such class recognition for an energy-harvesting ship concept, advancing the UK startup’s plans to develop what it describes as the world’s first net-positive vessel.Bath, England-based DRIFT Energy has developed a vessel design that uses deep-ocean wind resources to generate energy while underway.