The world’s first hydrogen propulsion superyacht ‘BREAKTHROUGH’. Built by Dutch yard Feadship and delivered in 2025, Breakthrough uses a large scale hydrogen fuel cell system with cryogenic liquid hydrogen to power hotel loads and coastal cruising with zero emissions and only water vapor as a byproduct, while hybrid diesel-electric systems provide extended range when needed.  Originally commissioned as Project 821 for billionaire tech figure Bill Gates, the 118.8m vessel was completed after a f