I spent 20 years in the Navy and am a retired Navy Chief and you hear stuff from time to time about how the Officers were disciplined. It's suppose to be kept quiet but you know how it is.
There were times when an Naval Officer had really screwed up and the Admiral would have a little talk with him and the word would eventually get out that the Admiral gave him the choice of either Admirals Mast or putting in his papers for retirement. I only know of one who chose Admirals Mast and he wasn't a happy camper when it was over.
I served as a recorder (which is kind of like a prosecutor) at two officers' administrative separation hearings. Everything is tightly held.
I've also participated in a few other officers' Admiral's Mast proceedings. They were a bit more open and less formal. One fellow pleaded guilty and received a thousand dollar fine and that was about it. The other gentleman was fined, confined to quarters on base for 30 days and recommended for administrative separation.
Any award at Admiral's Mast for an officer is a career killer, and the officer will be passed over for promotion at his or her next promotion selection board. Most just bide their time and submit a resignation when the time comes, or they fail to select twice and end up separated (with severance pay, of course).