Would the absence of Suez and Panama lead to more nuclear-powered cargo ships?
Short answerIt could strengthen the case by making voyages longer, but regulatory and operating costs would still limit commercial adoption.
NotesCommercial nuclear shipping must pay for the reactor, certification, specialized crews, port access, and permission to pass sensitive waterways. Suez and Panama shorten routes while creating regulatory chokepoints where a nuclear merchant ship may face extra restrictions. In a world without those canals, cargo vessels spend much longer on open-ocean passages around continents. The endurance and fuel-independence of nuclear propulsion then become more useful relative to their fixed costs. That counterfactual strengthens the case for nuclear cargo ships, especially without Suez, while ordinary commercial economics remain uncertain.