Well, is it really all that absurd to use an existing vessel with a working engine (which uses whatever kind of fuel, not really relevant) to transport some ran

Well, is it really all that absurd to use an existing vessel with a working engine (which uses whatever kind of fuel, not really relevant) to transport some random kind of cargo? In my opinion it's not absurd at all. Would you advocate for only allowing transportation of renewable fuels with means of transportation that use renewable energy themselves? That'd mean throwing away quite a few newly built engines and many more old and perfectly working ones and building new ones ... that'd seem like a waste to me. Making the shipping industry carbon neutral is of course part of the task .. but according to a quick web search worldwide shipping amounts to ~ 4.5 % of greenhouse gas emissions .. that's only a fraction and not the big chunk that ought to get all the attention.