What is the rank associated with O-9?

The rank associated with O-9 is Vice Admiral. In the U.S. Navy, ranks are designated by a system that uses letters and numbers to indicate the level of authority and responsibility an officer holds. The "O" designation refers to officer ranks, and the number represents the level within that category. An O-9 rank signifies a high level of command, with Vice Admirals typically overseeing significant naval operations, fleets, or serving in high-level positions within larger military organizations. This rank is also critical in formulating and implementing naval strategy and policy, making it a key leadership role within the Navy structure.