That is orthogonal to the point. Shipping is considered a hard industry to reduce CO2 emissions, like aviation, but unlike aviation, 50% of the distance ships are traveling are just delivering fuel. So solving non-shipping fuel use solves nearly half of shipping fuel use. The remaining uses of shipping are also much more tractable to electrify.

It’s also a clue as to why there’s such serious political opposition to wind and solar and to some extent nuclear for electric generation.

Point of use generation is disruptive to many industries… not just petroleum but automotive, trucking, various services that serve both, etc. There’s a significant portion of the population employed by schlepping oil around and doing things with it to support those activities.