How do you go about changing a Navy discharge?

Answer:
You need to send your inquiry / petition to the Bureau of Naval Personnel. Don't be optimistic though - having lived in D.C. for over 30 years and worked at all levels of the Navy, I can tell you that their bureaucratic mindset isn't very flexible. To change their decision (or to admit they were wrong) requires compelling evidence that they weren't "exactly right" to begin with.
First answer by TSD -RAVEN-. Last edit by TSD -RAVEN-. Contributor trust: 279 [recommend contributor recommended]. Question popularity: 1 [recommend question].