MAN Cryo, a division of MAN Energy Solutions, has provided a liquid-hydrogen gas-fuel supply system for 'Project 821', the world's first hydrogen fuel-cell superyacht built by Feadship in the Netherlands. This innovative system enables zero-emission propulsion by storing hydrogen in liquid form and supplying it to the fuel cell. The fuel-cell technology offers silent operation at anchor for up to a week or emission-free navigation at 10 knots, emitting only pure water. MAN Cryo faced challenges due to the lack of design codes for hydrogen tanks but successfully designed a safe tank approved for placement below deck, a milestone in the marine industry. The company's supply scope includes a vacuum-insulated tank, a bunker station for liquid hydrogen bunkering, control systems, and a unique 'tank prediction tool' for efficient operations. MAN Cryo's expertise in cryogenic equipment and engineering solutions has previously led to milestones in LNG and now extends to hydrogen fuel systems for marine applications, showcasing their commitment to sustainable and innovative solutions.