Outside this ranking system there are physicians (who may wear the same insignia in the Army/Air Force but with a slight variation in the Navy), nurses and veterinarians, while priests and judicial personnel wear completely different insignia and are without rank.
Besides the NATO-system, the Danish defence utilizes its own system, which for the navy is as follows: The highest officer's rank is OF-9 (Admiral) which is reserved for the Chief of Defence (only when this seat is occupied by a naval officer).
The Prince Consort of Denmark held the rank of Admiral (à la suite).
Similarly, OF-8 (Vice-admiral) is reserved for the Vice Chief of Defence).
The branch of service emblems are worn by all NCOs and enlisted, except for Chefsergent who wears a crown.