The only time you salute on a ship, is when you are up in front of the Captain. "Salute....Ooooorfffff Caaaaaaps!"
If you receive a salute in the army/marines you are likely to get a 7.62mm round straight through your helmet shortly after.
Oh and by the way, it is useless talking to most Spams about NATO, because if they are Pacific Fleet etc, they don't have a clue what you are on about!