The Navy’s Echelon 2 commands are the major organizations that report directly to the Chief of Naval Operations and carry out the service’s core functions: manning fleets, building ships, training sailors, running bases, conducting research, and sustaining the sea-based nuclear deterrent. The governing OPNAV instruction lists 28 Echelon II activities under the CNO’s administrative control.1secnav.navy.mil. OPNAV Instruction 5450.352B – Mission, Functions and Tasks of the Office of the Chief of Naval Operations The commands below are the ones most visible in the Navy’s daily work, grouped by the function each one owns.
Where Echelon II Sits in the Chain
The Navy classifies every command into one of five echelon levels. Echelon I is the CNO. Echelon II commands report directly to the CNO and manage large portfolios like fleet readiness, systems acquisition, or personnel. Echelons III, IV, and V sit further down, handling narrower missions, individual installations, schools, or units within an Echelon II’s portfolio. The Secretary of the Navy retains overall authority; the CNO carries out SECNAV’s policies through instructions pushed down to the Echelon II activities.1secnav.navy.mil. OPNAV Instruction 5450.352B – Mission, Functions and Tasks of the Office of the Chief of Naval Operations Each Echelon II owns a slice of that workload and the budget authority to execute it.
Fleet and Operational Commands
These are the commands most people picture when they think of the Navy. Their job is to produce combat-ready naval forces and hand them off to the joint combatant commands that employ them.
U.S. Fleet Forces Command
U.S. Fleet Forces Command (USFFC), headquartered in Norfolk, Virginia, trains, certifies, and provides combat-ready forces to combatant commanders.2U.S. Fleet Forces Command. Mission It oversees Atlantic-side surface, submarine, and aviation readiness through subordinate type commanders such as Naval Surface Force Atlantic and Submarine Force Atlantic, and serves as the primary force provider for Atlantic operations.
U.S. Pacific Fleet
U.S. Pacific Fleet (PACFLT) is the world’s largest fleet command, covering roughly 100 million square miles from the U.S. West Coast through the Indian Ocean and from Antarctica to the Arctic.3U.S. Pacific Fleet. About Us Its operational reach runs through Third Fleet in the Eastern Pacific and Seventh Fleet in the Western Pacific and Indian Ocean. PACFLT does for the Indo-Pacific what USFFC does for the Atlantic side.
Naval Special Warfare Command
Naval Special Warfare Command (NAVSPECWARCOM) organizes, trains, and equips the Navy’s special operations forces, primarily SEAL teams and Special Warfare Combatant-craft Crewmen, and deploys them in support of U.S. Special Operations Command and other combatant commanders.4Naval Special Warfare Command. Mission
Military Sealift Command
Military Sealift Command (MSC) is the leading provider of ocean transportation for the entire Department of Defense, operating approximately 125 civilian-crewed ships on any given day.5Military Sealift Command. MSC Mission Its ships deliver fuel, ammunition, and supplies to forces at sea, preposition cargo worldwide, and carry out specialized missions including hospital support and ocean surveillance. MSC is why carrier strike groups can stay on station for months without returning to port.
Commander, Navy Reserve Forces Command
Commander, Navy Reserve Forces Command (CNRF) manages, trains, and administers the Navy Reserve. Reserve forces provide surge capacity during major operations and fill critical billets in sea and shore commands in peacetime.
Systems Commands (SYSCOMs)
The five systems commands handle research, acquisition, and lifecycle sustainment of everything the fleet physically uses. They consume most of the Navy’s procurement budget and employ tens of thousands of civilian engineers and specialists.
Naval Sea Systems Command
Naval Sea Systems Command (NAVSEA) is the largest SYSCOM, accounting for nearly one-fifth of the Navy’s total budget and managing more than 150 acquisition programs.6Naval Sea Systems Command. Who We Are It is responsible for the design, construction, maintenance, modernization, and disposal of every ship and submarine in the fleet, along with the combat systems installed aboard them.
Naval Air Systems Command
Naval Air Systems Command (NAVAIR) provides full life-cycle support for naval aviation: research, design, development, systems engineering, acquisition, testing, and in-service logistics for Navy and Marine Corps aircraft, weapons, and related training equipment.7Naval Air Systems Command. Naval Air Warfare Center Training Systems Division – Orlando The portfolio runs from carrier-based fighters to unmanned systems to the simulators pilots train on.
Naval Supply Systems Command
Naval Supply Systems Command (NAVSUP) runs the Navy’s global supply chain, managing over 430,000 line items of repair parts, fuel distribution through the Naval Petroleum Office, contracting, transportation, and quality-of-life services including food service and postal operations.8Naval Supply Systems Command. Our Mission When a forward-deployed ship needs a specific part, NAVSUP’s supply chain is what delivers it.9Naval Supply Systems Command. Navy Supply Chain Management
Naval Facilities Engineering Systems Command
Naval Facilities Engineering Systems Command (NAVFAC) plans, designs, builds, and maintains the Navy’s shore infrastructure, real estate, and utility systems. Its portfolio spans dry-dock seismic retrofits, military housing construction, and environmental compliance across installations.10Naval Facilities Engineering Systems Command. NAVFAC Northwest Year in Review: Strengthening Shore Infrastructure for Future Fleet Forces NAVFAC also provides expeditionary construction capability through the Naval Construction Force, the Seabees.
Naval Information Warfare Systems Command
Naval Information Warfare Systems Command (NAVWAR) focuses on communications networks, cybersecurity tools, and information technology systems that connect platforms and facilities across the fleet.11NAVWAR Systems Command. About Where the other SYSCOMs concentrate on physical platforms, NAVWAR’s domain is the digital infrastructure that lets those platforms share data, coordinate fires, and defend against cyber threats.
Personnel, Training, and Medical Commands
Bureau of Naval Personnel
The Bureau of Naval Personnel (BUPERS), operating through Navy Personnel Command, is the Navy’s authoritative manager of military personnel records and the organization that handles assignments, promotions, separations, and workforce planning. Orders to a new duty station or selection for advancement come out of BUPERS.
Naval Education and Training Command
Naval Education and Training Command (NETC) runs the network of schools and training centers that produce qualified sailors, from boot camp through advanced technical and professional development courses. NETC develops standardized curricula for both enlisted and officer career paths.
Bureau of Medicine and Surgery
The Bureau of Medicine and Surgery (BUMED) manages the health and medical readiness of both the Navy and Marine Corps. Its mission frames Navy Medicine as a maritime medical force delivering manned, trained, and equipped medical capabilities to keep warfighters operationally ready.12Med.Navy.mil. Navy Medicine Mission BUMED operates a worldwide healthcare system of naval hospitals, clinics, and forward-deployed medical teams.
Intelligence, Research, and Strategic Programs
Office of Naval Intelligence
The Office of Naval Intelligence (ONI) is the nation’s premier source of maritime intelligence, collecting and analyzing scientific, technical, geopolitical, and military information for strategic, operational, and tactical decision-makers.13Office of Naval Intelligence. Office of Naval Intelligence Fact Sheet Its work feeds directly into fleet operations, giving commanders the threat picture before forces deploy into contested waters.
Office of Naval Research
The Office of Naval Research (ONR) was established in 1946 to plan, foster, and encourage scientific research for the Navy.14Office of Naval Research. About ONR Under Title 10, ONR manages programs in the basic research, applied research, and advanced technology categories of the Navy R&D budget and is charged with transitioning science and technology into operational capability.15Office of the Law Revision Counsel. 10 USC 8022 – Office of Naval Research Duties ONR also supervises patent, trademark, and intellectual property matters for the Department of the Navy.
Strategic Systems Programs
Strategic Systems Programs (SSP) has managed the Navy’s sea-based nuclear deterrent since 1956, carrying cradle-to-grave responsibility for the Trident submarine-launched ballistic missile system.16secnav.navy.mil. Strategic Systems Programs: Who We Are and What We Buy That responsibility covers research and design, production, deployment logistics, fleet support, and disposal.
Installations and Safety
Commander, Navy Installations Command
Commander, Navy Installations Command (CNIC) provides ready installation platforms that deliver warfighting readiness, base operations, and quality of service.17Commander, Navy Installations Command. Mission and Vision CNIC manages the Navy’s global network of bases, overseeing port operations, airfield management, family housing, child care, and morale programs. NAVFAC builds and maintains the physical infrastructure; CNIC runs day-to-day operations on top of it.
Naval Safety Command
The Naval Safety Command (NAVSAFECOM) was re-established as an Echelon II command in February 2022, elevating safety oversight to a two-star-led organization with expanded authority.18Naval Safety Command. History Its mission is to preserve warfighting capability by identifying hazards and reducing risk to people and resources.19Naval Safety Command. 2025-2030 Strategic Plan OV-1 NAVSAFECOM investigates mishaps, analyzes safety data for long-term trends, conducts enterprise-wide assessments, and manages the Navy’s Risk Management Information system and high-risk training oversight.
How the Commands Fit Together
The Echelon II structure creates clear lanes, but the commands lean on each other constantly. A carrier strike group deploying from Norfolk shows the pattern. USFFC certifies the strike group as ready. NAVSEA maintained the carrier and its combat systems. NAVAIR kept the air wing flyable. NAVSUP delivered fuel and parts. BUPERS assigned the sailors, NETC trained them, and BUMED screened them medically. ONI provided the intelligence picture. NAVFAC kept the pier in working order, and CNIC ran the base they left from. No single Echelon II command generates combat power on its own.
One boundary is worth naming. The 28 activities on the OPNAV list include commands not covered here: component commands assigned to geographic combatant commands, testing and evaluation organizations, and other specialized headquarters that support narrower slices of the Navy’s work. The set above is the functional backbone, not the full roster.