|The Smallest Nuke weighs 78 kilos and has minimal shielding. I don't know if you have ever done any back packing, but if you do I would suggest you start off at a lighter load then 160+ pounds! BTW, due to the limited shielding, which made storage a real bitch, not many of the 'atomic demolition mines' were produced. Not much of a 'stealth' weapon. Just keep your eyes peeled for a real big guy who is sweatin, puking, and has his hair falling out, carrying a coffee Thermos that weighs almost as much as he does, and glows in the dark. The Ship Idea is even sillier. The most practical way is putting your device on a private jet, but that has some of the same problems as the ship. Paper Trails. The FBI is real good at following paper trails. A nuke going off in an American harbor like New York, Houston, or Tampa, means the gloves come off. It would be the last terrorist act. ANY Nation that would be seen as harboring these terrorist would be blown off the face of this planet. Even a balless weenie like Jimmy Carter would have no choice, if they didn't take action the American people would get rid of him and get a president who would do something.