Which rank falls under the O-2 designation?

The rank that corresponds to the O-2 designation is Lieutenant Junior Grade. In the United States Navy and Coast Guard, the rank structure uses a system where officer ranks are classified with "O" numbers, representing their position within the Officer paygrade system.

O-1 is represented by Ensign, which is the entry-level rank for commissioned officers. When an Ensign successfully meets the time-in-service requirements and performance evaluations, they are promoted to O-2, which is the rank of Lieutenant Junior Grade.

This rank serves as a developmental grade for officers who have shown the potential for increasing responsibility and leadership roles, paving the way for advancement to the O-3 rank, which is Lieutenant. This progression is critical for establishing career paths in military leadership and ensuring that officers develop the necessary experience and skills.

The other ranks mentioned are either at a higher level (Lieutenant and Commander) or do not directly follow the O-1 rank in the Navy's hierarchical structure.