In a groundbreaking move, luxury shipyard Feadship unveiled Breakthrough, previously known as Project 821, a hydrogen fuel-cell megayacht commissioned by the renowned billionaire and environmentalist, Bill Gates. Priced at a staggering €600 million, this megayacht signifies a significant leap towards sustainability in the superyacht industry. Boasting an impressive 390 feet in length and an interior volume exceeding 7,000 GT spread across seven decks, Breakthrough offers unparalleled luxury amenities including a dedicated hospital, Nemo lounge, and private walkways. The megayacht can reach speeds of 17 knots and cover a range of 6,500 nautical miles, showcasing its advanced hydrogen-powered capabilities. While hydrogen is not the sole energy source due to storage constraints, Breakthrough can operate on hydrogen during anchoring and cruise at lower speeds. Additionally, the megayacht utilizes hydro-treated vegetable oil as an alternative fuel source, further emphasizing Feadship's commitment to green technology. The development of Breakthrough spanned five years and serves as a concrete response to Bill Gates' inquiry on incorporating green technology. By selling off his shadow cat, Wayfinder, Gates is making way for the revolutionary Breakthrough, setting a new benchmark for eco-friendly leisure craft.