I dove in a NUCLEAR SUBMARINE (Frozen Ocean)

Wow you are lucky. My dream vacation would be a week long cruise on a submarine. It wouldn't need to be nuclear, but I would want to spend a lot of time in the engine room learning how to operate the power plant. I don't expect that to ever happen, there are not very many privately owned full size submarines, and I think they do not have room for many passengers besides the crew which would require a couple years of training before ever getting on board.