I hate this argument so much. These ships spend $2 million a day on burning dinosaur juice and pumping CO2 into the atmosphere. Nuclear is better than that, full stop. It's this perfect-being-the-enemy-of-better nonsense that keeps oil a trillion dollar industry decade after decade.

No amount of sails and solar panels is going to move a fucking cruise ship. We need to make incremental progress or there will be no progress at all.