Feadship Project 821 Hydrogen Fuel-cell Yacht

Dutch shipyard Feadship just launched a major milestone in alternative energy — the Project 821 superyacht, powered by a hybrid system of hydrogen fuel cells and generators running on HVO biofuel. Over five years of development went into Project 821, representing the pinnacle of marine technology. Storing the hydrogen was the biggest obstacle, with Feadship saying that hydrogen takes up eight to 10 times more space than an equivalent amount of diesel. 13 feet was added to the ship's length to fit a four-ton hydrogen tank, 16 fuel cells, and ventilation systems. Project 821 can't store enough hydrogen for an ocean crossing, but short cruises at 10 knots and up to a week of power at anchor are possible. Designed by British studio RWD, the 290-foot yacht is also the largest yacht built by Feadship, with five decks above the waterline, 14 balconies, five shell doors, and seven fold-out platforms.

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