From my reading of the article I think the ferry is intended to service inter-island hops on Orkney where a 200 car ferry would be overkill. Also as the articl

From my reading of the article I think the ferry is intended to service inter-island hops on Orkney where a 200 car ferry would be overkill. Also as the article reports, Orkney has an idiotically huge amount of renewable power available, far more than the islands can consume, and far more than the interconnect from Orkney to mainland Scotland can handle. So using it to create hydrogen seems like a fair use of that surplus power.