Which rank corresponds to O3 in the Navy?

In the Navy, the rank corresponding to O-3 is Lieutenant. This rank is part of the officer corps and is a key leadership position. At the O-3 level, individuals typically have several years of experience and are expected to manage junior officers and leading divisions or teams. The progression from Ensign (O-1) to Lieutenant Junior Grade (O-2) and then to Lieutenant (O-3) reflects the increasing levels of responsibility and leadership within the Navy. Understanding the structure of officer ranks is essential for recognizing the hierarchy and roles within naval operations.