Marking a key milestone toward zero-emission cruising, Viking floated out its second hydrogen-powered ship – the 54,000-ton Viking Astrea – at Fincantieri’s Ancona shipyard in Italy. Scheduled for delivery to Viking in May 2027, the ship will sail the Mediterranean and Northern Europe during its inaugural season.

That looks pretty cool.

a propulsion system based partially on liquefied hydrogen

I wonder how much work "partially" is doing in that sentence.

It's going to be the equivalent of a plug-in hybrid but for ships. We should not begrudge companies for not coming up with perfect solutions right away.

That's fine I was just hoping for a bit more technical detail, the article was quite short :)