According to the article, it is the world's first GREEN SUPERYACHT! Yes, you read that right. They have taken the term OXYMORON to a whole new level with this bullshit.
Reading through it, in fact the boat CANNOT make a transatlantic crossing running on hydrogen, it only can carry enough to run all the hotel electrics. To power the boat for longer crossings it uses "HVO" (Hydrogen Treated Vegetable Oil), which is basically Diesel sourced from plant oils.
Even with just running the lights, HVAC and heating systems, it still needs to refill the cryogenic liquid H tanks weekly, which really limits the number of ports you can park the thing at. I don't think many marinas or yacht clubs store liquid hydrogen yet.
Not mentioned of course are the megatons of embedded energy from fossil fuels used to build it. It's about as Green as a lump of coal.
So, will some Billionaire buy this latest monstrosity to show his commitment to Green energy?
https://www.superyachttimes.com/yacht-news/feadship-821-yacht-launch
Feadship 821: 119m hydrogen fuel-cell yacht launched
RE