Which of the following ranks is denoted by Navy O-5?

The rank denoted by Navy O-5 is Commander. In the United States Navy rank structure, each officer rank is assigned a number corresponding to their level, with O-1 being the lowest and O-10 the highest. Commander, which is classified as O-5, is a mid-level officer rank. Officers at this level generally have significant responsibilities, often commanding a ship, sub-unit, or a major component within a larger command structure.

Understanding the organization and hierarchy of the Navy is crucial, as it affects both operations and command structure. The title of Commander typically indicates experience and service, as an officer usually must serve several years at lower ranks before attaining this level.

The other ranks listed either correspond to different levels within the Navy or are mistaken for O-5. For instance, Lieutenant is an O-3 rank, Captain is O-6, and Rear Admiral Lower Half is O-7. Each of these ranks has distinct roles, responsibilities, and paths of progression within the Navy, underscoring the importance of recognizing the correct designation and hierarchy.