There was an experimental cruise ship back in the 70s I believe that had a nuclear reactor. It could make round trips around the world without stopping for a very long time where as a normal coal or oil ship would have to keep refueling and make a !it of pollution. The sad thing was that nobody really wanted a nuclear ship pulling up into their harbors, so it was banned from a lot of them... If they were allowed t be at a certain harbor, they had to make reservations to pull up into a harbor months in advance because the people that owned the harbors were afraid of a nuclear meltdown or explosion. This never happened to the ship but the ship just stop being used after a while because of that fear from harbors (not enough money). The thing is, the military has been using nuclear reactors safely for many and many of years with no effects on the people or no bad incidents... As soon as it was brought to the public everyone (except for the people that paid to ride on it) was very afraid of something happening. There is always a possibility but there is always the possibility of a faulty oil engine on a ship blowing up... The way they build those reactors now are highly secure and they always have alarm systems...About 10-15 years ago, the Chinese made a new type of nuclear power station. They called it dry rock or something but it used the entire amount of uranium and leaves no waste. They were able to run it off nuclear waste from older power stations too. And it is also impossible for the system to have a melt down.
Unfortunately I don't know if they are exporting the idea or what has happened to it, but if it is legit, it would be a great way to go, and I am against nuclear power and weapons so I don't say it lightly. But clean nuclear power with no waste and no chance of a melt down, I would have that in Australia.