Until you realize that the energy requirement is also different. Land transport in general is very inefficient. Ship is in fact one of the most energy efficient means of transport.
194 nautical miles isn’t terribly far, though. For port to port, sure. For oceanic shipping, I don’t think 194 is going to cut it. I think we will probably have to do SMRs or efuels to really cut cargo ship and cruise ship emissions when crossing the Pacific or Atlantic. Though I don’t know where nuclear powered shipping (in non-military applications) is in terms of progress.
I don’t disagree but every time I’ve seen a diesel engine on a cargo ship it was absolutely massive.