Petty officer third class

Petty Officer Third Class is the fourth enlisted rank of the UNSC Navy and is the lowest rank of non-commissioned officer, or NCO. It is equal to the rank of Corporal in the UNSC Marine Corps.

In informal settings, a Petty Officer Third Class is typically called a "Petty Officer".

In the UNSC Navy, enlisted personnel are referred to by their rating and rate (rank). Mentioned ratings at the same pay grade as Petty Officer Third Class are listed below: