Last time i checked there are no scottish nuclear armed nuclear submarines.... There are some royal navy ones, and they are kept in scotland but i doubt the MOD would take kindly to people trying to fiddle around with them. And scotland has more than a few nuclear power plants, mostly because sparsely populated coastlines are good places to put them!
I don't get to vote but independance would prevent scottish ministers voting in english laws at westminister, which would be nice. I have doubts it would happen, the states are too combined to make seperating into different countries very easy.