Originally Posted by MSD

It seems like that's the way to go, but think about what would happen if those ships that ran aground and spilled oil had nuclear reactors on them. It would probably be perfectly safe considering the amount of shielding and armoring they would put into it, but nuclear power barely has majority support in the US now and that kind of thing would get the shipping industry crucified by well-meaning environmentalists. Add to that the increase in piracy and the potential profit to be made on one ship's worth of any nuclear fuel, weapons-grade or not, and you have a whole new set of problems to overcome.