Grand Admiral a naval rank in one of the highest in the several European navies that use this system, what system are they using?
Military rank Military ranks are a system of hierarchical relationships in armed forces, police, intelligence agencies or other institutions organized along military lines. Usually, uniforms denote the bearer's rank by particular insignia affixed to the uniforms. Ranking systems have been known for most of military history to be advantageous for military operations, in particular with regards to logistics, command, and coordination; as time went on and military operations became larger and more complex, military ranks increased and ranking systems themselves became more complex.
Chancellor (Russia) Chancellor of the Russian Empire was the civil position (class) in the Russian Empire, according to the Table of Ranks introduced by Peter the Great in 1722. That was a civil rank of the 1st class and equal to those of Active Privy Councillor, 1st class, General Field Marshal in the Army, and General Admiral in the Navy. The rank holder should be addressed as "Your High Excellency" (Russian: Ваше Высокопревосходительство , Vashe Vysokoprevoskhoditelstvo).