Numbered fleet

The structure of the United States Navy consists of four main bodies: the Office of the Secretary of the Navy, the Office of the Chief of Naval Operations, the operating forces (described below), and the Shore Establishment.

The Office of the Chief of Naval Operations (OpNav) includes the Chief of Naval Operations, the Vice Chief of Naval Operations, the Deputy Chiefs of Naval Operations, the Assistant Chiefs of Naval Operations, the Chief of Legislative Affairs, the Director of Naval Nuclear Propulsion, the Master Chief Petty Officer of the Navy, and other members of the Navy or Marines or civilians in the Department of the Navy assigned or detailed to the Office.

As of June 2008, there was a DCNO Manpower and Personnel/Chief of Naval Personnel (N1), the Deputy Chief of Naval Operations for Information Dominance (N2/N6), (established October 2009), DCNO Plans, Policy, and Operations (N3/N5), Fleet Readiness and Logistics (N4), DCNO Warfare Requirements and Programmes (N6/N7), and DCNO Resources, Requirements and Assessments (N8). In addition there was a Director of T&E and Operational Requirements, Surgeon General of the Navy, Chief of Naval Reserves, Chief of Oceanography, and Chief of Chaplains of the Navy.

The operating forces consists of eight components: United States Fleet Forces Command, United States Pacific Fleet, United States Naval Forces Central Command, United States Naval Forces Southern Command, United States Naval Forces Europe, U.S. Fleet Cyber Command, United States Navy Reserve, United States Naval Special Warfare Command, and Operational Test and Evaluation Force (OPTEVFOR).

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