United States Navy operating forces organization
Encyclopedia
The structure of the United States Navy
United States Navy
The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

consists of four main bodies: the Office of the Secretary of the Navy, the Office of the Chief of Naval Operations
Chief of Naval Operations
The Chief of Naval Operations is a statutory office held by a four-star admiral in the United States Navy, and is the most senior uniformed officer assigned to serve in the Department of the Navy. The office is a military adviser and deputy to the Secretary of the Navy...

, the operating forces (described below), and the Shore Establishment.

Office of the Chief of Naval Operations

The Office of the Chief of Naval Operations (OpNav) includes the Chief of Naval Operations
Chief of Naval Operations
The Chief of Naval Operations is a statutory office held by a four-star admiral in the United States Navy, and is the most senior uniformed officer assigned to serve in the Department of the Navy. The office is a military adviser and deputy to the Secretary of the Navy...

, the Vice Chief of Naval Operations
Vice Chief of Naval Operations
The Vice Chief of Naval Operations is the second highest ranking officer in the United States Navy. In the event that the Chief of Naval Operations is absent or is unable to perform his duties, the VCNO assumes the duties and responsibilities of the CNO. The VCNO may also perform other duties...

, 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
Master Chief Petty Officer of the Navy
The Master Chief Petty Officer of the Navy is a unique non-commissioned rank in the United States Navy, which has a paygrade of E-9. The holder of this rank and post is the most senior enlisted member of the U.S...

, and other members of the Navy or Marines or civilians in the Department of the Navy
United States Department of the Navy
The Department of the Navy of the United States of America was established by an Act of Congress on 30 April 1798, to provide a government organizational structure to the United States Navy and, from 1834 onwards, for the United States Marine Corps, and when directed by the President, of the...

 assigned or detailed to the Office.

As of June 2008, there was a DCNO Manpower and Personnel/Chief of Naval Personnel
Chief of Naval Personnel
The Chief of Naval Personnel is responsible for overall manpower readiness for the United States Navy. The CNP also serves as Deputy Chief of Naval Operations and is one of four Deputy Chiefs of Naval Operations, with the identification of N1/NT...

 (N1), the Deputy Chief of Naval Operations for Information Dominance
Director of Naval Intelligence
The Director of Naval Intelligence refers to either one of two posts, both related to naval intelligence:* The head of the Naval Intelligence Division of the British Admiralty; or* The head of the Office of Naval Intelligence in the United States....

 (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
Surgeon General of the United States Navy
The Surgeon General of the United States Navy is the senior-most medical corps officer in the United States Navy.- Establishment of the Bureau of Medicine and Surgery :...

, Chief of Naval Reserves, Chief of Oceanography, and Chief of Chaplains of the Navy
United States Navy Chaplain Corps
The Chaplain Corps of the United States Navy consists of ordained clergy who are commissioned naval officers. Their principal purpose is to "promote the spiritual, religious, moral, and personal well-being of the members of the Department of the Navy," which includes the Navy and the United States...

.

Operating forces

The operating forces consists of nine components: United States Fleet Forces Command
United States Fleet Forces Command
The United States Fleet Forces Command is an Atlantic Ocean theater-level component command of the United States Navy that provides naval resources that are under the operational control of the United States Northern Command...

, United States Pacific Fleet
United States Pacific Fleet
The United States Pacific Fleet is a Pacific Ocean theater-level component command of the United States Navy that provides naval resources under the operational control of the United States Pacific Command. Its home port is at Pearl Harbor Naval Base, Hawaii. It is commanded by Admiral Patrick M...

, Naval Forces Central Command, Naval Forces Europe, Naval Network Warfare Command, Navy Reserve
United States Navy Reserve
The United States Navy Reserve, until 2005 known as the United States Naval Reserve, is the Reserve Component of the United States Navy...

, Naval Special Warfare Command, Operational Test and Evaluation Force (OPTEVFOR), and Military Sealift Command
Military Sealift Command
The Military Sealift Command is a United States Navy organization that controls most of the replenishment and military transport ships of the Navy. It first came into existence on 9 July 1949 when the Military Sea Transportation Service became solely responsible for the Department of Defense's...

.

Fleets in the United States Navy take on the role of force provider; they do not carry out military operations independently, rather they train and maintain naval units that will subsequently be provided to the naval forces component of each Unified Combatant Command
Unified Combatant Command
A Unified Combatant Command is a United States Department of Defense command that is composed of forces from at least two Military Departments and has a broad and continuing mission. These commands are established to provide effective command and control of U.S. military forces, regardless of...

. While not widely publicized, groups of ships departing U.S. waters for operational missions gain a Task force
Task force
A task force is a unit or formation established to work on a single defined task or activity. Originally introduced by the United States Navy, the term has now caught on for general usage and is a standard part of NATO terminology...

 type designation, almost always with the Second or Third Fleets. On entry into another numbered fleet's area of responsibility, they are redesignated as a task group from that fleet. For example, a carrier task group departing the Eastern Seaboard for the Mediterranean might start out as Task Group 20.1; on entry into the Mediterranean, it might become ('inchop') Task Group 60.1. The United States Navy has seven active numbered fleets, each led by at least a two-star rear admiral. These seven fleets are grouped under Fleet Forces Command (the former Atlantic Fleet), Pacific Fleet, Naval Forces Europe, all led by four-star admirals; Naval Forces Central Command, and Fleet Cyber Command, whose commanders are a vice admirals and 'dual-hatted' as Commander Fifth Fleet and Commander Tenth Fleet respectively; and Naval Forces Southern Command who commander is a rear admiral and 'dual-hatted' as Commander Fourth Fleet.

Command Listing

  • Fleet Forces Command
    • Type commands, including Submarine Force U.S. Atlantic Fleet, Surface Forces Atlantic, and Naval Air Forces Atlantic
    • Task Force 20
      Task Force 20
      Task Force 20 is a designation that has been used by at least two United States Department of Defense units.-United States Navy:Task Force 20 is one of the task force designators assigned to the United States Fleet Forces Command in the Atlantic, and was previously one of the task force designators...

       (TF20) operates in the Atlantic Ocean from the North to South Pole, from the Eastern United States to Western Europe and Africa, and along both the eastern and western shores of Central and South America. TF20 is the sole operational fleet within Fleet Forces Command, providing force training and exercises of assigned maritime forces and providing combat-ready Naval forces to support Service missions and global requirements. TF20 works with the Combined Joint Operations from the Sea/Center of Excellence to complete its mission.
    • Military Sealift Command
      Military Sealift Command
      The Military Sealift Command is a United States Navy organization that controls most of the replenishment and military transport ships of the Navy. It first came into existence on 9 July 1949 when the Military Sea Transportation Service became solely responsible for the Department of Defense's...

       (MSC) serves not only the United States Navy, but the entire Department of Defense as an ocean carrier of materiel
      Materiel
      Materiel is a term used in English to refer to the equipment and supplies in military and commercial supply chain management....

      . It transports equipment, fuel, ammunition, and other goods essential to the smooth function of United States armed forces worldwide. Up to 95% of all supplies needed to sustain the U.S. military can be moved by Military Sealift Command. MSC operates approximately 120 ships with 100 more in reserve. Ships of the command are not manned by active duty Navy personnel, but by civil service or contracted merchant mariners
      United States Merchant Marine
      The United States Merchant Marine refers to the fleet of U.S. civilian-owned merchant vessels, operated by either the government or the private sector, that engage in commerce or transportation of goods and services in and out of the navigable waters of the United States. The Merchant Marine is...

      .
    • Navy Expeditionary Combat Command
      Navy Expeditionary Combat Command
      The Navy Expeditionary Combat Command serves as the single functional command to centrally manage current and future readiness, resources, manning, training and equipping of the United States Navy's 40,000 expeditionary forces who are currently serving in every theater of operation. The NECC was...

       (NECC), established in January 2006, serves as the single functional command for the Navy's expeditionary forces and as central management for the readiness, resources, manning, training and equipping of those forces. NECC capabilities include; Explosive Ordnance Disposal
      United States Navy EOD
      United States Navy Explosive Ordnance Disposal technicians render safe all types of ordnance, including improvised, chemical, biological, and nuclear. They perform land and underwater location, identification, render-safe, and recovery of foreign and domestic ordnance...

      , Maritime Expeditionary Security, Riverine
      United States Navy Riverine Squadron
      The Riverine Squadrons of the United States Navy are elements of the Navy Expeditionary Combat Command . According to the Navy: “The Navy’s Riverine force focuses on conducting Maritime Security Operations and Theater Security Cooperation in a riverine area of operations or other suitable area...

      , Diving Operations, Naval Construction
      Seabee
      Seabees are members of the United States Navy construction battalions. The word Seabee is a proper noun that comes from the initials of Construction Battalion, of the United States Navy...

      , Maritime Civil Affairs, Expeditionary Training, Expeditionary Logistics, Expeditionary Intelligence, Combat Camera, Expeditionary Combat Readiness, and Maritime Expeditionary Security. The Maritime Expeditionary Security Force’s (MESF) (formerly known as Naval Coastal Warfare) primary mission is force protection conducted through fleet support with operations around the world. Two Maritime Expeditionary Security Groups in San Diego and Portsmouth, Va. supervise integration of coastal warfare assets trained to operate in high density, multi-threat environments. Coastal and harbor defense and protection of naval assets are placed under the jurisdiction of two Naval Coastal Warfare Groups: one for the Pacific Fleet and one for the Atlantic Fleet.

  • U.S. Naval Forces Europe
    United States Naval Forces Europe
    United States Naval Forces Europe is the United States Navy component of the United States European Command and provides forces for United States African Command....

     / Sixth Fleet
    • The Sixth Fleet is deployed in the Mediterranean Sea and Black Sea, under the administrative direction of U.S. Naval Forces Europe (NAVEUR), and the operational command of U.S. European Command
      United States European Command
      The United States European Command is one of ten Unified Combatant Commands of the United States military, headquartered in Stuttgart, Germany. Its area of focus covers and 51 countries and territories, including Europe, Russia, Iceland, Greenland, and Israel...

      . Sixth Fleet is based in Naples
      Naples
      Naples is a city in Southern Italy, situated on the country's west coast by the Gulf of Naples. Lying between two notable volcanic regions, Mount Vesuvius and the Phlegraean Fields, it is the capital of the region of Campania and of the province of Naples...

      , Italy
      Italy
      Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

       and its flagship is USS Mount Whitney
      USS Mount Whitney (LCC-20)
      The USS Mount Whitney is a Blue Ridge class command ship of the US Navy; it is the flagship of the Sixth Fleet. She is also the command and control ship for the Commander Joint Command Lisbon and the Commander Striking Force NATO...

       (LCC-20). Sixth Fleet also provides the Mt Whitney as an Afloat Command Platform for Naval Striking and Support Forces NATO, a Naples-based Maritime headquarters that serves as a deployable Maritime Component Commander as directed by Supreme Headquarters Allied Powers Europe (SHAPE).
  • Pacific Fleet
    United States Pacific Fleet
    The United States Pacific Fleet is a Pacific Ocean theater-level component command of the United States Navy that provides naval resources under the operational control of the United States Pacific Command. Its home port is at Pearl Harbor Naval Base, Hawaii. It is commanded by Admiral Patrick M...

    • Type commands, including Submarine Forces Pacific, Surface Force Pacific, and Naval Air Forces Pacific
    • Third Fleet's jurisdiction is the Northern, Southern, and Eastern Pacific Ocean along with the West Coast of the United States. Normally, units assigned to Third Fleet undergo training cruises prior to deployment with either the Fifth Fleet or Seventh Fleet and are not intended for immediate use in battle. Only in the event of general war does Third Fleet participate in active combat operations. Forming part of the Pacific Fleet
      United States Pacific Fleet
      The United States Pacific Fleet is a Pacific Ocean theater-level component command of the United States Navy that provides naval resources under the operational control of the United States Pacific Command. Its home port is at Pearl Harbor Naval Base, Hawaii. It is commanded by Admiral Patrick M...

      , Third Fleet is a part of U.S. Pacific Command
      United States Pacific Command
      The United States Pacific Command is a Unified Combatant Command of the United States armed forces responsible for the Pacific Ocean area. It is led by the Commander, Pacific Command , who is the supreme military authority for the various branches of the Armed Forces of the United States serving...

       and is based in San Diego, California
      San Diego, California
      San Diego is the eighth-largest city in the United States and second-largest city in California. The city is located on the coast of the Pacific Ocean in Southern California, immediately adjacent to the Mexican border. The birthplace of California, San Diego is known for its mild year-round...

      .
    • Seventh Fleet
      United States Seventh Fleet
      The Seventh Fleet is the United States Navy's permanent forward projection force based in Yokosuka, Japan, with units positioned near Japan and South Korea. It is a component fleet force under the United States Pacific Fleet. At present, it is the largest of the forward-deployed U.S. fleets, with...

      , the largest forward-deployed U.S. fleet, operates in the Western Pacific and the Indian Ocean, stretching to the Persian Gulf and including much of the east coast of Africa. It forms the fully combat ready part of the Pacific Fleet and provides naval units to the U.S. Pacific Command
      United States Pacific Command
      The United States Pacific Command is a Unified Combatant Command of the United States armed forces responsible for the Pacific Ocean area. It is led by the Commander, Pacific Command , who is the supreme military authority for the various branches of the Armed Forces of the United States serving...

      . At any given time, Seventh Fleet consists of 40-50 ships operating from bases in South Korea
      South Korea
      The Republic of Korea , , is a sovereign state in East Asia, located on the southern portion of the Korean Peninsula. It is neighbored by the People's Republic of China to the west, Japan to the east, North Korea to the north, and the East China Sea and Republic of China to the south...

      , Japan
      Japan
      Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

      , and Guam
      Guam
      Guam is an organized, unincorporated territory of the United States located in the western Pacific Ocean. It is one of five U.S. territories with an established civilian government. Guam is listed as one of 16 Non-Self-Governing Territories by the Special Committee on Decolonization of the United...

      . It is headquartered at Yokosuka, Kanagawa
      Yokosuka, Kanagawa
      is a city located in Kanagawa, Japan. As of 2010, the city had an estimated population of 419,067 and a population density of 4,160 people per km². It covered an area of 100.62 km²...

      , Japan
      Japan
      Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

       with USS Blue Ridge
      USS Blue Ridge (LCC-19)
      USS Blue Ridge is the lead ship of the two Blue Ridge-class command ships of the U.S. Navy, and is the command ship of the United States Seventh Fleet. Her primary role is to provide Command, Control, Communications, Computers, and Intelligence support to the commander and staff of the United...

       (LCC-19) as its flagship.
    • Naval shore commands: Commander Naval Forces Korea
      Commander Naval Forces Korea
      Commander, U.S. Naval Forces Korea is a major shore command of the United States Navy that serves as the shore support agency for all U.S. Naval activity in South Korea. Known by the initials "CNFK", Commander, U.S. Naval Forces Korea is headquartered in Seoul on Yongsan Army Garrison and...

       (CNFK), Commander Naval Forces Marianas
      Commander Naval Forces Marianas
      Commander Naval Forces Marianas is the Navy force shore command responsible for United States Navy activities in Guam, Saipan, Tinian and the surrounding islands....

       (CNFM), and Commander Naval Forces Japan
      Commander Naval Forces Japan
      Commander, Naval Forces Japan is the shore authority of the United States Navy for all U.S. naval facilities in Japan. CNFJ headquarters is in Yokosuka, Japan...

       (CNFJ).
  • U.S. Naval Forces Central Command / Fifth Fleet
    • Fifth Fleet's area of responsibility is the Middle East, including the Persian Gulf
      Persian Gulf
      The Persian Gulf, in Southwest Asia, is an extension of the Indian Ocean located between Iran and the Arabian Peninsula.The Persian Gulf was the focus of the 1980–1988 Iran-Iraq War, in which each side attacked the other's oil tankers...

      , Red Sea
      Red Sea
      The Red Sea is a seawater inlet of the Indian Ocean, lying between Africa and Asia. The connection to the ocean is in the south through the Bab el Mandeb strait and the Gulf of Aden. In the north, there is the Sinai Peninsula, the Gulf of Aqaba, and the Gulf of Suez...

      , Gulf of Oman
      Gulf of Oman
      The Gulf of Oman or Sea of Oman is a strait that connects the Arabian Sea with the Strait of Hormuz, which then runs to the Persian Gulf. It is generally included as a branch of the Persian Gulf, not as an arm of the Arabian Sea. On the north coast is Pakistan and Iran...

      , and parts of the Indian Ocean
      Indian Ocean
      The Indian Ocean is the third largest of the world's oceanic divisions, covering approximately 20% of the water on the Earth's surface. It is bounded on the north by the Indian Subcontinent and Arabian Peninsula ; on the west by eastern Africa; on the east by Indochina, the Sunda Islands, and...

      . Consisting of around 25 ships, including a carrier strike group and an expeditionary strike group, Fifth Fleet is effectively fused with U.S. Naval Forces Central Command, which is the naval component of the U.S. Central Command
      United States Central Command
      The United States Central Command is a theater-level Unified Combatant Command unit of the U.S. armed forces, established in 1983 under the operational control of the U.S. Secretary of Defense...

      . Fifth Fleet is headquartered at Manama
      Manama
      Manama is the capital and largest city of Bahrain, with an approximate population of 155,000 people.Long an important trading center in the Persian Gulf, Manama is home to a very diverse population...

      , Bahrain
      Bahrain
      ' , officially the Kingdom of Bahrain , is a small island state near the western shores of the Persian Gulf. It is ruled by the Al Khalifa royal family. The population in 2010 stood at 1,214,705, including 235,108 non-nationals. Formerly an emirate, Bahrain was declared a kingdom in 2002.Bahrain is...

      .
    • U.S. Naval Forces Central Command includes a number of Task Forces which are not part of the Fifth Fleet. These include Combined Task Force 150
      Combined Task Force 150
      Combined Task Force 150 is a multinational coalition naval task force working under the 25 nation coalition of Combined Maritime Forces and is based in Bahrain established to monitor, inspect, board, and stop suspect shipping to pursue the "War on Terrorism" and in the Horn of Africa region ...

      , carrying out maritime surveillance activities in the Gulf of Oman and around the Horn of Africa, and Task Force 152, covering the southern Persian Gulf with the same role. Both Task Forces report to Commander NAVCENT in his role as Combined Maritime Forces Component Commander.
  • U.S. Naval Forces Southern Command
    U.S. Naval Forces Southern Command
    U.S. Naval Forces Southern Command is the naval element of United States Southern Command . Its areas of operation include South America, Central America, the Caribbean and surrounding waters. Its headquarters are located at Naval Station Mayport, Florida. USNAVSO is currently under the command...

     / Fourth Fleet
    • The Fourth Fleet has operational responsibility for U.S. Navy assets assigned from east and west coast fleets to operate in the U.S. Southern Command
      United States Southern Command
      The United States Southern Command , located in Miami, Florida, is one of nine Unified Combatant Commands in the United States Department of Defense. It is responsible for providing contingency planning and operations in Central and South America, the Caribbean The United States Southern Command...

       area. The Fourth Fleet will conduct varying missions including a range of contingency operations, counter narcoterrorism, and theater security cooperation (TSC) activities. TSC includes military-to-military interaction and bilateral training opportunities as well as humanitarian assistance and in-country partnerships.
    • U.S. Naval Forces Southern Command's (USNAVSO), the Navy component command for U.S. Southern Command, mission is to direct U.S. naval forces operating in the Caribbean, and Central and South American regions and interact with partner nation navies to shape the maritime environment.
  • U.S. Fleet Cyber Command
    United States Tenth Fleet
    The Tenth Fleet is a functional formation of the United States Navy responsible for the Navy's cyber warfare programs. It was first created as an anti submarine warfare coordinating organization during the Battle of the Atlantic in the Second World War...

     / Tenth Fleet
    United States Tenth Fleet
    The Tenth Fleet is a functional formation of the United States Navy responsible for the Navy's cyber warfare programs. It was first created as an anti submarine warfare coordinating organization during the Battle of the Atlantic in the Second World War...

    • The Tenth Fleet has functional responsibility to achieve the integration and innovation necessary for warfighting superiority across the full spectrum of military operations in the maritime, cyberspace and information domains. Tenth Fleet has operational control of Navy cyber forces to execute the full spectrum of computer network operations, cyber warfare, electronic warfare, information operations and signal intelligence capabilities and missions across the cyber, electromagnetic and space domains. Tenth Fleet also partner with and support other fleet commanders to provide guidance and direction to ensure coordinated, synchronized and effective preventative and response capability in cyberspace. U.S. Fleet Cyber Command
      United States Tenth Fleet
      The Tenth Fleet is a functional formation of the United States Navy responsible for the Navy's cyber warfare programs. It was first created as an anti submarine warfare coordinating organization during the Battle of the Atlantic in the Second World War...

       / Tenth Fleet
      United States Tenth Fleet
      The Tenth Fleet is a functional formation of the United States Navy responsible for the Navy's cyber warfare programs. It was first created as an anti submarine warfare coordinating organization during the Battle of the Atlantic in the Second World War...

       is a subcomponent of U.S. Cyber Command
      United States Cyber Command
      United States Cyber Command is an armed forces sub-unified command subordinate to United States Strategic Command. The command is located in Fort Meade, Maryland and led by General Keith B. Alexander. USCYBERCOM centralizes command of cyberspace operations, organizes existing cyber resources and...

      .

  • U.S. Naval Special Warfare Command
    • Commissioned on 16 April 1987, at Naval Amphibious Base Coronado, in San Diego, California
      San Diego, California
      San Diego is the eighth-largest city in the United States and second-largest city in California. The city is located on the coast of the Pacific Ocean in Southern California, immediately adjacent to the Mexican border. The birthplace of California, San Diego is known for its mild year-round...

      . It acts as the Naval component of the United States Special Operations Command
      United States Special Operations Command
      The United States Special Operations Command is the Unified Combatant Command charged with overseeing the various Special Operations Commands of the Army, Air Force, Navy and Marine Corps of the United States Armed Forces. The command is part of the Department of Defense...

      , headquartered in Tampa, Florida
      Tampa, Florida
      Tampa is a city in the U.S. state of Florida. It serves as the county seat for Hillsborough County. Tampa is located on the west coast of Florida. The population of Tampa in 2010 was 335,709....

      . Naval Special Warfare Command provides vision, leadership, doctrinal guidance, resources and oversight to ensure component maritime special operations forces are ready to meet the operational requirements of combatant commanders. The NSW has 5,400 total active-duty personnel, including 2,450 SEALs
      Seals
      Seals may refer to:In military:* United States Navy SEALs, the U.S. Navy's principal special operations force* Royal Thai Navy SEALs, part of the Royal Thai NavyIn sport:* Florida Seals, a minor league ice hockey team from 2002 and 2007...

       and 600 Special Warfare Combatant-craft Crewmen
      Special Warfare Combatant-craft Crewmen
      -History:Special Boat Teams can trace their history back to World War II. Motor Torpedo Boat Squadron Three rescued General Douglas MacArthur from the Philippines after the Japanese invasion and then participated in guerrilla actions until American resistance ended with the fall of Corregidor...

      . NSW also maintains a 1,200-person reserve of approximately 325 SEALs, 125 SWCC and 775 support personnel.

The Navy maintains several "Naval Forces Commands" which operate naval shore facilities
Shore facility
Shore facility is one of the facilities located on shore used for receiving ships and transferring cargo and people to them. Ports and marinas constitute a collection of shore facilities...

 and serve as liaison units to local ground forces of the Air Force and Army. Such commands are answerable to a Fleet Commander as the shore protector component of the afloat command. In times of war, Commander Naval Forces Korea becomes a Task Force (Task Force 78) of the United States Seventh Fleet
United States Seventh Fleet
The Seventh Fleet is the United States Navy's permanent forward projection force based in Yokosuka, Japan, with units positioned near Japan and South Korea. It is a component fleet force under the United States Pacific Fleet. At present, it is the largest of the forward-deployed U.S. fleets, with...

. Other Naval Force Commands may similarly augment to become number fleet task forces.

Historical organization

The organization of the Navy has changed incrementally over time. During World War II administrative organization for many ship types included divisions, for example Battleship Divisions (abbreviated BatDivs), Cruiser Divisions, Destroyer Divisions, or Escort Divisions (CortDivs), usually composed of two ships, often members of the same class. These made up squadrons (e.g. Battle Squadron, Cruiser Squadron, Escort Squadron (CortRon) etc.) of several divisions. Yet the exigencies of World War II forced the creation of the task force
Task force
A task force is a unit or formation established to work on a single defined task or activity. Originally introduced by the United States Navy, the term has now caught on for general usage and is a standard part of NATO terminology...

 system where ships no longer fought solely as part of same-type divisions or squadrons. This was gradually reflected in administrative arrangements; by the 1970s, formations such as Cruiser-Destroyer Groups (CruDesGrus) came into existence.

The United States First Fleet existed after the Second World War from 1947 at least, but it was redesignated Third Fleet in early 1973.
Other fleets, such as the 10th and 12th, were active during World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

, the 12th in European waters as part of United States Naval Forces Europe
United States Naval Forces Europe
United States Naval Forces Europe is the United States Navy component of the United States European Command and provides forces for United States African Command....

.

The Shore Establishment

Shore establishment commands exist to support the mission of the seaborne fleets through the use of facilities on land. Focusing on logistics and combat-readiness, they are essential for the smooth, continuous and complete operation of naval forces. The variety of commands reflect the complexity of the modern US Navy and range from naval intelligence to personnel training to maintaining repair facilities.

Among the commands of the shore establishment, as of April 2011, are the Naval Education and Training Command, the Naval Meteorology and Oceanography Command
Commander, Naval Meteorology and Oceanography Command
The Naval Meteorology and Oceanography Command serves as the operational arm of the Naval Oceanography Program. Headquartered at the Stennis Space Center in Mississippi, COMNAVMETOCCOM is a third echelon command reporting to United States Fleet Forces Command...

, the Space and Naval Warfare Systems Command, the Naval Facilities Engineering Command, the Naval Supply Systems Command, the Naval Air Systems Command
Naval Air Systems Command
The Naval Air Systems Command provides material support for aircraft and airborne weapon systems for the United States Navy. NAVAIR was established in 1966 as the successor to the Navy's Bureau of Naval Weapons . Current Commander, Naval Air Systems Command, is Vice Adm. David Architzel since May...

, the Naval Sea Systems Command
Naval Sea Systems Command
The Naval Sea Systems Command is the largest of the U.S. Navy's five "systems commands," or materiel organizations...

, the Bureau of Medicine and Surgery, the Bureau of Naval Personnel, the United States Naval Academy
United States Naval Academy
The United States Naval Academy is a four-year coeducational federal service academy located in Annapolis, Maryland, United States...

, the Naval Safety Center, the Naval Strike and Air Warfare Center
Naval Strike and Air Warfare Center
The Naval Strike and Air Warfare Center at Naval Air Station Fallon located in the city of Fallon in western Nevada is the center of excellence for naval aviation training and tactics development...

, and the United States Naval Observatory
United States Naval Observatory
The United States Naval Observatory is one of the oldest scientific agencies in the United States, with a primary mission to produce Positioning, Navigation, and Timing for the U.S. Navy and the U.S. Department of Defense...

. Official Navy websites list the Office of the Chief of Naval Operations and the Chief of Naval Operations (CNO) as part of the shore establishment, but these two entities effectively sit superior to the other organizations, playing a coordinating role.

The current organization hierarchy of the Office of Naval Intelligence
Office of Naval Intelligence
The Office of Naval Intelligence was established in the United States Navy in 1882. ONI was established to "seek out and report" on the advancements in other nations' navies. Its headquarters are at the National Maritime Intelligence Center in Suitland, Maryland...

 and the Naval War College
Naval War College
The Naval War College is an education and research institution of the United States Navy that specializes in developing ideas for naval warfare and passing them along to officers of the Navy. The college is located on the grounds of Naval Station Newport in Newport, Rhode Island...

 is not entirely clear.

United States Marine Corps

In 1834, the Marines came under the Department of the Navy. Historically, the United States Navy has enjoyed a unique relationship with the United States Marine Corps
United States Marine Corps
The United States Marine Corps is a branch of the United States Armed Forces responsible for providing power projection from the sea, using the mobility of the United States Navy to deliver combined-arms task forces rapidly. It is one of seven uniformed services of the United States...

 (USMC), partly because they both specialize in seaborne operations. At the very top level of civilian organization, the USMC is part of the Department of the Navy and reports to the Secretary of the Navy. However, it is considered to be a distinct, separate service branch and not a subset of the Navy; the highest ranking Marine officer, the Commandant of the Marine Corps
Commandant of the Marine Corps
The Commandant of the Marine Corps is normally the highest ranking officer in the United States Marine Corps and is a member of the Joint Chiefs of Staff...

, does not report to a Navy officer. Marine Corps Medal of Honor
Medal of Honor
The Medal of Honor is the highest military decoration awarded by the United States government. It is bestowed by the President, in the name of Congress, upon members of the United States Armed Forces who distinguish themselves through "conspicuous gallantry and intrepidity at the risk of his or her...

 recipients are awarded the Navy variant and Marines are eligible to receive the Navy Cross
Navy Cross
The Navy Cross is the highest decoration that may be bestowed by the Department of the Navy and the second highest decoration given for valor. It is normally only awarded to members of the United States Navy, United States Marine Corps and United States Coast Guard, but can be awarded to all...

. The United States Naval Academy
United States Naval Academy
The United States Naval Academy is a four-year coeducational federal service academy located in Annapolis, Maryland, United States...

 trains Marine Corps commissioned officers while prospective Navy officers undergo instruction by Marine NCO
Non-commissioned officer
A non-commissioned officer , called a sub-officer in some countries, is a military officer who has not been given a commission...

 Drill Instructors at OCS
Officer Candidate School (U.S. Navy)
The United States Navy's Officer Candidate School, currently located at Naval Station Newport, Rhode Island, provides training to become a commissioned officer. Attendance is one possible way for civilian college graduates with no military experience to earn a commission as a U.S. Navy officer...

. Naval Aviation includes Navy and Marine aviators
United States Naval Aviator
A United States Naval Aviator is a qualified pilot in the United States Navy, Marine Corps or Coast Guard.-Naming Conventions:Most Naval Aviators are Unrestricted Line Officers; however, a small number of Limited Duty Officers and Chief Warrant Officers are also trained as Naval Aviators.Until 1981...

, flight officers
Naval Flight Officer
A Naval Flight Officer is an aeronautically designated commissioned officer in the United States Navy or United States Marine Corps that specializes in airborne weapons and sensor systems. NFOs are not pilots per se, but they may perform many "co-pilot" functions, depending on the type of aircraft...

, and aircrew.

The relationship extends to the operational theater as well. As amphibious assault specialists, Marines often deploy on, and attack from, Navy vessels; while being transported on Navy ships, they must obey the orders of the captain of the vessel. Marine aviation tailhook
Tailhook
A tailhook, also arresting hook or arrester hook, is a device attached to the empennage of some military fixed wing aircraft...

 squadrons train and operate alongside Navy squadrons, flying similar missions and often flying sorties together. Other types of Marine air squadrons operate from amphibious assault ships in support of Marine amphibious operations. Navy and Marine squadrons use the same NATOPS
NATOPS
The Naval Air Training and Operating Procedures Standardization program prescribes general flight and operating instructions and procedures applicable to the operation of all US naval aircraft and related activities...

 aviation manuals and procedures. The USMC does not train chaplains
United States Navy Chaplain Corps
The Chaplain Corps of the United States Navy consists of ordained clergy who are commissioned naval officers. Their principal purpose is to "promote the spiritual, religious, moral, and personal well-being of the members of the Department of the Navy," which includes the Navy and the United States...

, hospital corpsmen
United States Navy Hospital Corpsman
A Hospital Corpsman is an enlisted medical specialist for the United States Navy who serves with Navy and United States Marine Corps units. The Hospital Corpsman works in a wide variety of capacities and locations, including shore establishments such as naval hospitals and clinics, aboard ships,...

 or medical doctors; thus officers and enlisted sailors from the Navy fulfill these roles. They generally wear Marine uniforms that are emblazoned with Navy insignia and markings to distinguish themselves from Marines. Corpsmen and chaplains enjoy a great sense of camaraderie with the Marines due in part because they work closely with them and often are embedded with Marine units. They operate under the command of the Marine Corps under the auspices of the Fleet Marine Force
Fleet Marine Force
The United States Fleet Marine Forces are combined general and special purpose forces within the United States Department of the Navy that are designed in engaging offensive amphibious or expeditionary warfare and defensive maritime employment...

, often called the "green side".

Because of the lack of full scale amphibious operations in recent conflicts, there has been pressure to cut the "gator navy" below the two regiments requirement of the Marines. This is a reduction from the programmatic goal of 2.5 Marine Expeditionary Brigade
Marine Expeditionary Brigade
A Marine Expeditionary Brigade is a formation of the United States Marine Corps, a Marine Air-Ground Task Force of approximately 14,500 Marines and Sailors constructed around a reinforced infantry regiment, a composite Marine aircraft group, a logistics group and a command element...

s and actual structure of 2.07 MEB equivalents in 1999.

The relationship between the US Navy and US Marine Corps is also one of mutual respect, and that respect is manifested in various policy and procedural regulation. Such as, per US Marine and Navy drill manuals, in a formation consisting of both Marine, and Sailors, Marines are to be present at the 'front' (in column), and 'left' (on line), regardless of rank. This is a symbol of the special status and honor granted to US Marines, and is a unique aspect of the Navy-Marine relationship.

United States Coast Guard

Although the Posse Comitatus Act
Posse Comitatus Act
The Posse Comitatus Act is an often misunderstood and misquoted United States federal law passed on June 18, 1878, after the end of Reconstruction. Its intent was to limit the powers of local governments and law enforcement agencies from using federal military personnel to enforce the laws of...

, which prevents federal military personnel from acting in a law enforcement capacity, applies only to the Army and Air Force, Department of Defense rules effectively require the Navy and Marine Corps to act as if Posse Comitatus did apply, preventing them from enforcing Federal law. The United States Coast Guard
United States Coast Guard
The United States Coast Guard is a branch of the United States Armed Forces and one of the seven U.S. uniformed services. The Coast Guard is a maritime, military, multi-mission service unique among the military branches for having a maritime law enforcement mission and a federal regulatory agency...

 fulfills this law enforcement role in naval operations. It provides Law Enforcement Detachments
Law Enforcement Detachments
Law Enforcement Detachments or LEDETs are specialized, deployable maritime law enforcement teams of the United States Coast Guard. First established in 1982, their primary mission is to deploy aboard U.S. and allied naval vessels to conduct and support law enforcement, interdiction, or security...

 (LEDETs) to Navy vessels, where they perform arrests and other law enforcement duties during Navy boarding and interdiction missions. In times of war, or when directed by the President, the Coast Guard operates as a service in the Navy and is subject to the orders of the Secretary of the Navy until it is transferred back to the Department of Homeland Security. At other times, Coast Guard Port Security Unit
Port Security Unit
United States Coast Guard Port Security Units are deployable units organized for sustained force protection operations. They can deploy within 96 hours and establish operations within 24 hours. PSUs conduct OCONUS port security in support of requesting regional Combatant commander. They provide...

s are sent overseas to guard the security of ports and other assets. The Coast Guard also jointly staffs the Navy's Naval Coastal Warfare Groups and Squadrons (the latter of which were known as Harbor Defense Commands until late-2004), which oversee defense efforts in foreign littoral combat and inshore areas. Additionally, Coast Guard and Navy vessels sometimes operate together in search and rescue
Search and rescue
Search and rescue is the search for and provision of aid to people who are in distress or imminent danger.The general field of search and rescue includes many specialty sub-fields, mostly based upon terrain considerations...

operations.
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