Instead of the Navy, have you considered the Coast Guard? They dont put you on a ship or sub that is gone for up to 6 months (unless it is an ice breaker). They have the same ranks and have a lot of the same ratings as the Navy. Coast Guard - Small Service, Big Job.
One thing you probably should avoid is becoming a Navy Seal. I just watched a documentary about their training and it would literally kill me now at the near age of 50.
