What are the reprecussions for administrative separation from the navy?

It all depends on why you were discharged, if you received an ELS, or OTH Discharge. Admin sep is basically saying it never happened, and should have no effect on future employment. Generally speaking however, depending on the circumstances surrouding your separation, it may affect a future federal sercurity clearence. i.e. not passing a drug test, or being "depressed". But getting Admin Sep from the navy isn't good, or bad, it's unchracterized. It means nothing. It basically means you couldn't hack it in the military and they're sending you home. Go back to school, get a good job, and think of this as a learning curve, least you had the balls to try.