The unveiling of luxury superyacht Project 821 in Amsterdam marks a significant milestone in the maritime industry's adoption of green hydrogen technology. The project, a collaboration between Feadship, Edmiston, and Lloyd’s Register, aims to push the boundaries of hydrogen technology in the context of superyachts. While hydrogen is seen as a key player in the realm of alternative energy, real-world applications like Project 821 are crucial to demonstrate its potential and address existing challenges. The yacht's fuel cell technology enables a week of silent, emission-free operation, showcasing the efficiency of hydrogen in powering large ships. However, challenges such as storing compressed liquid hydrogen at extremely low temperatures and the need for supplemental methanol fuel highlight the obstacles in using hydrogen as a primary energy source. Despite these hurdles, Feadship claims that hydrogen can fulfill a significant portion of the yacht's power needs, emphasizing its role in providing environmentally friendly operation while anchored. The project not only focuses on technological advancement but also on setting new protocols and regulations for hydrogen use in the maritime sector. By developing scalable technology for large ships and addressing storage, safety, and efficiency concerns, Project 821 paves the way for a cleaner and more sustainable future in luxury yachting. Jan-Bart Verkuyl, Feadship's Director and CEO of Royal Van Lent Shipyard, underscores the project's global impact, aiming to introduce clean technology not only for Project 821 but for the world.