Not to in any way disparage the Navy Chief’s patriotism and dedication to service to his country, but the rank of Senior Chief is a high level enlisted rank while Captain is a senior officers’ rank.
If I’m wrong, please correct me.
I don’t think he meant O-6 by saying cap’n.
I see what you meant...sorry. Disregard please.
He is a retired Senior Chief who is now a charter boat Captain.
you are correct.
Anyone who commands a boat or a ship is entitled to be called captain, regardless of their actual rank, this is true in civilian life as well as the Navy. For instance a Lt. JG in charge of an LST would be entitled to be called captain and would be called such by the men under him or her as the case may be.