Hydrogen powered coaster

With Orca will be the world’s first hydrogen - powered cargo ship. The ship will sail on a long-term contract for HeidelbergCement and Felleskjøpet Agri, and will be put into operation in 2024.
Illustration: Norwegian Ship Design

“That is, cylinders that spin around in the wind and give the ship propulsion”.
Not entirely correct, Works by the “Magnus effect”.

Toyota and BMW have sold hydrogen powered cars for a long time. The hard part isn’t switching an engine from gas or diesel to hydrogen, the hard part is finding a place to fill up and the fact that making hydrogen is a huge energy-loser.
** well hard part II is hydrogen leaks out of places other gasses don’t, so 2 hard parts…