Bill Gates’ $645M ‘net-zero’ superyacht is up for sale — and he has never boarded it

A revolutionary superyacht reportedly commissioned by Microsoft co-founder Bill Gates is now hitting the market with a jaw-dropping $645 million price tag. Known as Breakthrough (also called Project 821), the 390-foot vessel is set to be showcased at the Monaco Yacht Show. Despite its cutting-edge design and green credentials, Gates is said to have never boarded the yacht. Designed to be the world’s first hydrogen-powered “net-zero” superyacht, Breakthrough merges state-of-the-art sustainability with extreme luxury — and is already generating global buzz.The yacht’s most exclusive feature is a four-story private residence reportedly tailored to Gates’ specifications. This secluded section includes two bedrooms, twin bathrooms, two offices with fireplaces, a gym, a pantry, and private elevators. Sea-view terraces and retractable balconies give the space the feel of a floating mansion. Yet, according to reports, Gates has never once boarded the vessel—despite years of planning and investment.Constructed by Dutch shipyard Feadship and designed by RWD, Breakthrough runs on compressed liquid hydrogen stored at -253°C. This zero-emission system powers the yacht entirely, with a backup biofuel platform that cuts emissions by 90% when needed. Excess heat from the power conversion is repurposed to warm pools, guest-room floors, and towel racks, underscoring its eco-engineering marvel.Though sustainable, the yacht is anything but minimalist. Its seven decks house an infinity pool, cinema, basketball court, private hospital, multiple libraries, and hot tubs. It accommodates 30 guests in 15 cabins and has room for 43 crew. The interiors blend leathers, marble, oak, and rattan, designed to evoke a high-end coastal retreat.Jamie Edmiston, CEO of the brokerage handling the sale, called Breakthrough “the one that will change it all.” He emphasized that the vessel meets the challenge of combining luxury and environmental responsibility without compromise. Jan-Bart Verkuyl of Feadship added that hydrogen fuel cells represent the future of yachting, citing their superior efficiency and low environmental impact.While Gates has neither confirmed nor denied involvement, insiders say the yacht was built to his preferences. Now, Canadian billionaire Patrick Dovigi, CEO of Green For Life Environmental, is rumored to be in talks to buy the vessel. Whoever the buyer turns out to be, Breakthrough is already being hailed as a turning point in luxury maritime innovation.