A Chief Petty Officer in the Navy is equivalent to what rank in the Marine Corps?

The rank of Chief Petty Officer (CPO) in the Navy corresponds to the rank of Gunnery Sergeant in the Marine Corps. Both ranks are considered to be part of the E-7 pay grade and signify a senior non-commissioned officer (NCO) position in their respective branches.

Gunnery Sergeants in the Marine Corps have responsibilities that encompass leadership, mentorship, and a supervisory role over junior Marines, similar to the role of a Chief Petty Officer overseeing lower-ranked sailors. Both ranks require considerable experience, knowledge, and skills, and both are seen as crucial to the operational effectiveness of their units.

In this context, the other ranks listed do not match the historical and functional equivalency to the Chief Petty Officer due to their differing levels of experience and responsibility in the chain of command.