I think, no, I am certain that this varies between communities and
even individual commands. Squadrons next door to each other can have
different nuances, never mind on coasts thousands of miles aways.

What is appropriate or inappropriate in one place may be verbose,
rude, too formal, not formal enough in another. A lot of things are
always a little different at sea too.

Nicknames or use of first names between Officer and Enlisted is
normally inappropriate, but I've met people who also thought that was
OK in certain circumstances.

Just some general thoughts to put it in perspective.