United States Navy
The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the world's most powerful navy and the largest by tonnage, at 4.5 million tons in 2021[9] and in 2009 an estimated battle fleet tonnage that exceeded the next 13 navies combined.[10] It has the world's largest aircraft carrier fleet, with 11 in service, 1 undergoing trials, two new carriers under construction, and six other carriers planned as of 2024. With 336,978 personnel on active duty and 101,583 in the Ready Reserve, the U.S. Navy is the third largest of the United States military service branches in terms of personnel. It has 299 deployable combat vessels and about 4,012 operational aircraft as of July 18, 2023.[11][12]
"USN" redirects here. For other uses, see USN (disambiguation).United States Navy
27 March 1794
(230 years)
(in current form)
13 October 1775
(248 years, 6 months)
(as the Continental Navy)[1][2]
United States
Semper Fortis ('Always Courageous'), (unofficial).
Non sibi sed patriae ('Not for self but for country') (unofficial)
13 October
- American Revolutionary War
Quasi-War
First Barbary War
War of 1812
Second Barbary War
West Indies Anti-Piracy Operations
Seminole Wars
African Anti-Slavery Operations
Aegean Sea Anti-Piracy Operations
First Sumatran expedition
United States exploration expedition
Patriot War
Second Sumatran expedition
Ivory Coast Expedition
Capture of Monterey
Mexican–American War
Bombardment of Greytown
Battle of Ty-ho Bay
First Fiji Expedition
Filibuster War
Second Opium War
Second Fiji Expedition
Reform War
Paraguay expedition
American Civil War
Bombardment of Qui Nhon
Shimonoseki Campaign
Formosa Expedition
United States expedition to Korea
Egyptian Expedition (1882)
Bering Sea Anti-Poaching Operations
Kingdom of Hawaii overthrowal
Second Samoan Civil War
Banana Wars- Spanish–American War
- Negro Rebellion
- Occupation of Nicaragua
- Occupation of Haiti
- Occupation of the Dominican Republic (1916)
Boxer Rebellion
World War I
Bombardment of Samsun
World War II
Korean War
First Taiwan Strait Crisis
1958 Lebanon crisis
1958 Taiwan Strait Crisis
Vietnam War
Occupation of the Dominican Republic (1965)
Iranian Hostage Rescue
Gulf of Sidra incident (1981)
Multinational Force in Lebanon
Invasion of Grenada
Action in the Gulf of Sidra (1986)
Bombing of Libya (1986)
Tanker War 1989 air battle near Tobruk
Invasion of Panama
Gulf War
Iraqi no-fly zones
Somali Civil War
Bosnian War
Third Taiwan Strait Crisis
Kosovo War
International Force for East Timor
Operation Enduring Freedom- Afghanistan (2001–2014)
- Philippines
- Horn of Africa
- Pankisi Gorge
- Trans Sahara
- Caribbean and Central America
Operation Burnt Frost
Operation Ocean Shield
Operation Odyssey Dawn
2014 Intervention against ISIL
Operation Inherent Resolve
War in Afghanistan (2015–2021)
2017 Shayrat missile strike
Operation Prosperity Guardian
The United States Navy traces its origins to the Continental Navy, which was established during the American Revolutionary War and was effectively disbanded as a separate entity shortly thereafter. After suffering significant loss of goods and personnel at the hands of the Barbary pirates from Algiers, the United States Congress passed the Naval Act of 1794 for the construction of six heavy frigates, the first ships of the Navy. The United States Navy played a major role in the American Civil War by blockading the Confederacy and seizing control of its rivers. It played the central role in the World War II defeat of Imperial Japan. The United States Navy emerged from World War II as the most powerful navy in the world. The modern United States Navy maintains a sizable global presence, deploying in strength in such areas as the Western Pacific, the Mediterranean, and the Indian Ocean. It is a blue-water navy with the ability to project force onto the littoral regions of the world, engage in forward deployments during peacetime and rapidly respond to regional crises, making it a frequent actor in American foreign and military policy.
The United States Navy is part of the Department of the Navy, alongside the United States Marine Corps, which is its coequal sister service. The Department of the Navy is headed by the civilian secretary of the Navy. The Department of the Navy is itself a military department of the Department of Defense, which is headed by the secretary of defense. The chief of naval operations (CNO) is the most senior Navy officer serving in the Department of the Navy.[13]
The U.S. Navy is a seaborne branch of the military of the United States. The Navy's three primary areas of responsibility:[15]
U.S. Navy training manuals state that the mission of the U.S. Armed Forces is "to be prepared to conduct prompt and sustained combat operations in support of the national interest." The Navy's five enduring functions are: sea control, power projection, deterrence, maritime security, and sealift.[16]