[Stealhead]

You would also need a crew that can actually maintain a nuclear submarine as well and even if you did these complex vessels receive months of maintenance between patrols something that would not be possible in a total collapse.Sure in a time of duress a sub can stay out for longer but the ship itself and crew would wear out in a year or so.

Hiding seems like a good idea but it is no guarantee of safety things can go wrong that force you to move like a hostile group finding your hiding spot people are going to be really looking because their survival depends on finding what is hidden.Long term survival a person or group of people would have to be nomadic.

I get a kick out of the people on these dooms day shows who have all these plans about having their little fort that they plan to defend well guess what they will get to do that only thing is sooner of later they are going to get over run and die.Better to be mobile because as I said people will be looking for permanent locations because they know that what they need is in them.

Of course not matter what you do it is going to very hard it is going to be very harsh and possibly only a very small number would survive and it might be close like that for generations.Think of your worst experience and multiply it about 1 billion then you have an inkling of how hard making it in a total collapse post apocalyptic world will be.