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Third Fleet (United States Navy)

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Third Fleet (United States Navy)
Unit nameThird Fleet
CaptionUSS Nimitz underway with Carrier Strike Group 11
Dates1943–1945; 1973–present
CountryUnited States
BranchUnited States Navy
TypeFleet
RoleNaval operations, power projection, maritime security
Command structureUnited States Pacific Fleet
GarrisonNaval Station San Diego
Nickname"Third Fleet"
Motto"Fortitudine Vincimus"
Notable commandersWilliam F. Halsey Jr.; Raymond A. Spruance; John S. McCain Sr.; John S. McCain Jr.

Third Fleet (United States Navy) is a numbered fleet of the United States Navy responsible for naval forces in the eastern and northern Pacific Ocean, including the coastal approaches to the continental United States and parts of the western Pacific Ocean. The fleet has a lineage stemming from operations in the World War II Pacific Theater under leaders such as William F. Halsey Jr. and Raymond A. Spruance, and today integrates carrier strike groups, expeditionary strike groups, and maritime patrol assets to conduct operations with partners including United States Pacific Fleet, United States Indo-Pacific Command, United States Fleet Forces Command, and allied navies such as the Royal Australian Navy, Japan Maritime Self-Defense Force, and Royal Canadian Navy.

History

Third Fleet traces its origins to fleet organizations created during World War II in the Pacific, notably during the Gilbert and Marshall Islands campaign, the Marianas campaign, and the Battle of Leyte Gulf. Commanders such as William F. Halsey Jr. and Raymond A. Spruance led large carrier task forces during operations including Operation Hailstone and the Philippine Sea engagements. After the war, fleet structures evolved through the Cold War era with commitments arising from crises like the Korean War and the Vietnam War, and later reorganizations during the 1973 United States military restructuring. Reestablished staffs and reflagging events connected the fleet to carrier-centric formations such as Carrier Strike Group 1, Carrier Strike Group 3, and Carrier Strike Group 11. The fleet has participated in multinational exercises like RIMPAC, Operation Unified Assistance, and operations in response to events such as the 2011 Tōhoku earthquake and tsunami and humanitarian support in the Pacific Islands.

Organization and Command

Third Fleet operates as a component of United States Pacific Fleet under the authority of United States Indo-Pacific Command for theater operations. Its headquarters at Naval Base Point Loma and Naval Station San Diego administers task forces, carrier strike groups, expeditionary strike groups, and logistics commands including Military Sealift Command units and Fleet Logistics Support Squadron 30. Commanders of note have included admirals with histories in United States Seventh Fleet and staff billets at Navy Staff (Pentagon). The fleet coordinates with joint commands such as United States Northern Command and interagency partners including United States Coast Guard districts and regional commands in coordination with allies like the Philippine Navy and Republic of Korea Navy.

Operations and Deployments

Third Fleet conducts forward-deployed operations, maritime security patrols, freedom of navigation operations, and disaster relief missions across the eastern and northern Pacific, often in conjunction with task forces from United States Seventh Fleet, United States Fifth Fleet, and partner exercises such as Malabar and Cobra Gold. Deployments have involved carrier strike groups centered on nuclear-powered carriers like USS Nimitz (CVN-68), USS Theodore Roosevelt (CVN-71), and USS Abraham Lincoln (CVN-72), amphibious ready groups with USS Boxer (LHD-4), and surface action groups built around cruisers such as USS Mobile Bay (CG-53). The fleet supported contingency operations during events including Operation Desert Storm contingency deployments, Operation Tomodachi, and multinational counter-piracy patrol coordination with units from Royal Navy, French Navy, and Peruvian Navy.

Ships and Aircraft Assigned

Assigned naval assets have included aircraft carriers, guided-missile cruisers, guided-missile destroyers, littoral combat ships, amphibious assault ships, fast combat support ships, and nuclear-powered submarines from classes such as Los Angeles-class submarine, Seawolf-class submarine, and Virginia-class submarine. Carrier air wings deploy aircraft including F/A-18 Hornet, F/A-18E/F Super Hornet, EA-18G Growler, E-2 Hawkeye, MH-60 Seahawk, and maritime patrol aircraft like the P-8 Poseidon and P-3 Orion. Surface combatants associated with the fleet have included Arleigh Burke-class destroyers, Ticonderoga-class cruisers, and San Antonio-class amphibious transport docks, while logistics support has been provided by USNS Supply (T-AOE-6) and USNS Mercy (T-AH-19) during humanitarian missions.

Bases and Facilities

Third Fleet's shore infrastructure centers on Naval Station San Diego with operational and training facilities at Naval Air Station North Island, Naval Base Point Loma, Naval Base Coronado, and forward locations including Joint Base Pearl Harbor–Hickam and Naval Base Guam for coordination with United States Indo-Pacific Command. Additional logistics and maintenance support is provided by shipyards and repair facilities such as Puget Sound Naval Shipyard, Pearl Harbor Naval Shipyard, and commercial shipyards under contract for depot-level maintenance. Training and readiness activities leverage ranges like the Pacific Missile Range Facility and exercise areas off the coasts of California and Hawaii.

Insignia and Traditions

Third Fleet insignia and traditions draw on naval heraldry and the fleet's World War II legacy, incorporating motifs used during commands led by admirals from the United States Naval Academy and decorations connected to campaigns like the Asiatic-Pacific Campaign Medal theaters. Ceremonial practices reflect ties to maritime customs observed across partner services such as the Royal Australian Navy and commemorations involving veterans from battles like Leyte Gulf and Iwo Jima. Unit awards and recognitions associated with fleet-level service include accolades historically recorded alongside citations issued by Secretary of the Navy and operational commendations referenced in fleet communications.

Category:United States Navy fleets