The Office of Naval Intelligence (ONI) is the
military intelligence
Military intelligence is a military discipline that uses information collection and analysis List of intelligence gathering disciplines, approaches to provide guidance and direction to assist Commanding officer, commanders in decision making pr ...
agency of the
United States Navy
The United States Navy (USN) is the naval warfare, maritime military branch, service branch of the United States Department of Defense. It is the world's most powerful navy with the largest Displacement (ship), displacement, at 4.5 millio ...
. Established in 1882 primarily to advance the Navy's modernization efforts, it is the oldest member of the
U.S. Intelligence Community and serves as the Federal Government's premier source of maritime intelligence.
Since the
First World War
World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
, ONI's mission has broadened to include real-time reporting on the developments and activities of foreign
navies; protecting maritime resources and interests; monitoring and countering transnational maritime threats; providing technical, operational, and tactical support to the U.S. Navy and its partners; and surveying the global maritime environment. ONI employs over 3,000 military and civilian personnel worldwide and is headquartered at the
National Maritime Intelligence Center in
Suitland, Maryland
Suitland is a suburb of Washington, D.C., approximately one mile (1.6 km) southeast of Washington, D.C. Suitland is a census designated place (CDP), as of the 2020 census, its population was 25,839. Prior to 2010, it was part of the Suitland ...
.
History
Despite playing an active and decisive role in the
American Civil War
The American Civil War (April 12, 1861May 26, 1865; also known by Names of the American Civil War, other names) was a civil war in the United States between the Union (American Civil War), Union ("the North") and the Confederate States of A ...
, in the following years the
U.S. Navy fell into precipitous decline. A lack of both federal funding and public interest reduced the Navy's size, prestige, and technological superiority; whereas steel ships were increasingly the norm, the U.S. Navy was entirely wooden. Towards the end of the 19th century, American naval power had become vastly obsolete compared to Europe, and even lagged behind the navies of less developed nations such as
Chile
Chile, officially the Republic of Chile, is a country in western South America. It is the southernmost country in the world and the closest to Antarctica, stretching along a narrow strip of land between the Andes, Andes Mountains and the Paci ...
.
In an era of
rapid industrialization,
globalized commerce, and
colonial expansion,
Alfred Thayer Mahan's ideas about the importance of
sea power, expressed in his book ''
The Influence of Sea Power upon History'' were adopted wholesale by the U.S. Navy. Navalists saw sea power as crucial for U.S. commercial and strategic interests, as well as a source of national prestige and power projection. American naval officers and military strategists advocated for a larger and more technologically advanced navy that could protect the U.S.'s vast maritime borders, safeguard its commercial interests, and project power abroad. Among the leading reformers was Navy Lieutenant
Theodorus Bailey Myers Mason, who called for the creation of a naval intelligence office dedicated to gathering information on foreign navies and the latest in naval science to help rebuild the U.S. Navy.
William H. Hunt, who served briefly as
Secretary of the Navy
The Secretary of the Navy (SECNAV) is a statutory officer () and the head (chief executive officer) of the Department of the Navy, a military department within the United States Department of Defense. On March 25, 2025, John Phelan was confirm ...
under President
James Garfield
James Abram Garfield (November 19, 1831 – September 19, 1881) was the 20th president of the United States, serving from March 1881 until Assassination of James A. Garfield, his death in September that year after being shot two months ea ...
, formed a
Naval Advisory Board tasked with rebuilding the Navy and bringing it up to par to global standards. Largely in response to Mason's recommendations, on March 23, 1882, Hunt issued General Order No. 292, which read:
The new Office of Naval Intelligence would be headquartered in the State, War and Navy Building (now the
Old Executive Office Building), with Mason appointed as its first "Chief Intelligence Office". As originally conceived, ONI assisted in the Navy's advancement by dispatching
naval attachés around the world to acquire data and resources related to the latest in naval warfare. These findings would be analyzed, interpreted, and disseminated to Navy leaders and government officials, helping to inform policies and programs related to naval development.
Expansion
Mason was succeeded as Chief Intelligence Officer by Lieutenant
Raymond P. Rodgers in April 1885. In addition to intensifying ONI's research and surveillance of naval technology abroad, Rodger's four-year tenure saw ONI partner with the
U.S. Department of State in gathering information on strategic maritime interests such as
Panama
Panama, officially the Republic of Panama, is a country in Latin America at the southern end of Central America, bordering South America. It is bordered by Costa Rica to the west, Colombia to the southeast, the Caribbean Sea to the north, and ...
,
Samoa
Samoa, officially the Independent State of Samoa and known until 1997 as Western Samoa, is an island country in Polynesia, part of Oceania, in the South Pacific Ocean. It consists of two main islands (Savai'i and Upolu), two smaller, inhabited ...
, and the
Kingdom of Hawaii
The Hawaiian Kingdom, also known as the Kingdom of Hawaiʻi (Hawaiian language, Hawaiian: ɛ ɐwˈpuni həˈvɐjʔi, was an Archipelagic state, archipelagic country from 1795 to 1893, which eventually encompassed all of the inhabited Hawaii ...
. ONI also began to develop capabilities in
cryptography
Cryptography, or cryptology (from "hidden, secret"; and ''graphein'', "to write", or ''-logy, -logia'', "study", respectively), is the practice and study of techniques for secure communication in the presence of Adversary (cryptography), ...
, which would foreshadow its evolution into a full-fledged military intelligence office.
In 1890, one year after Rodgers' departure from ONI, the office was transferred from the
Bureau of Navigation to the
Secretary of the Navy
The Secretary of the Navy (SECNAV) is a statutory officer () and the head (chief executive officer) of the Department of the Navy, a military department within the United States Department of Defense. On March 25, 2025, John Phelan was confirm ...
, solidifying its key role in the Navy's growth and development. ONI's emergence as a proper naval
intelligence
Intelligence has been defined in many ways: the capacity for abstraction, logic, understanding, self-awareness, learning, emotional knowledge, reasoning, planning, creativity, critical thinking, and problem-solving. It can be described as t ...
arm began in earnest with the
Spanish–American War
The Spanish–American War (April 21 – August 13, 1898) was fought between Restoration (Spain), Spain and the United States in 1898. It began with the sinking of the USS Maine (1889), USS ''Maine'' in Havana Harbor in Cuba, and resulted in the ...
of 1898. Naval operations were critical in the conflict, and ONI was responsible for protecting Navy personnel, providing tactical support, and implementing counter-intelligence measures. Nevertheless, weaknesses in its intelligence gathering were revealed.
ONI grew in prominence under President
Theodore Roosevelt
Theodore Roosevelt Jr. (October 27, 1858 – January 6, 1919), also known as Teddy or T.R., was the 26th president of the United States, serving from 1901 to 1909. Roosevelt previously was involved in New York (state), New York politics, incl ...
, a former
Assistant Secretary of the Navy and naval enthusiast. His
expansionist foreign policy — and the central role the U.S. Navy played therein — made maritime intelligence more crucial. The sailing of the "
Great White Fleet" around the world between 1906 and 1907, which included sixteen newly constructed steel
battleships
A battleship is a large, heavily naval armour, armored warship with a main battery consisting of large naval gun, guns, designed to serve as a capital ship. From their advent in the late 1880s, battleships were among the largest and most form ...
, showcased new-found American seapower and validated ONI's efforts. By 1911, the U.S. was constructing
super-dreadnoughts at a pace that would eventually become competitive with Britain's
Royal Navy
The Royal Navy (RN) is the naval warfare force of the United Kingdom. It is a component of His Majesty's Naval Service, and its officers hold their commissions from the King of the United Kingdom, King. Although warships were used by Kingdom ...
.
American entry into the
First World War
World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
in 1917 marked a turning point in the office's history. President
Woodrow Wilson
Thomas Woodrow Wilson (December 28, 1856February 3, 1924) was the 28th president of the United States, serving from 1913 to 1921. He was the only History of the Democratic Party (United States), Democrat to serve as president during the Prog ...
was an exponent of the importance of a strong navy to U.S. defense. Under his administration, Congress authorized ONI's first major increase in personnel and funding, and expanded its role to include domestic security operations — namely the protection of U.S. ports, harbors, and maritime facilities from enemy infiltration and sabotage. ONI's mandate often entailed partnering with the departments of State, War, Justice, Commerce, and Labor. Due to the increasingly sensitive nature of its work, ONI also began to censor radio and mail communications, which further marked its development as a major intelligence office.
During the 1920s and 1930s, many of ONI's activities were dedicated to
Japan
Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...
, which was an increasingly advanced and
belligerent
A belligerent is an individual, group, country, or other entity that acts in a hostile manner, such as engaging in combat. The term comes from the Latin ''bellum gerere'' ("to wage war"). Unlike the use of ''belligerent'' as an adjective meanin ...
naval power. The office investigated Japanese fortifications in the Pacific, acquired information on Japanese military aircraft and weaponry, and partnered with the U.S. Army's
Military Intelligence Division and the
Federal Bureau of Investigation
The Federal Bureau of Investigation (FBI) is the domestic Intelligence agency, intelligence and Security agency, security service of the United States and Federal law enforcement in the United States, its principal federal law enforcement ag ...
to monitor potentially subversive elements within the
Japanese American
are Americans of Japanese ancestry. Japanese Americans were among the three largest Asian Americans, Asian American ethnic communities during the 20th century; but, according to the 2000 United States census, 2000 census, they have declined in ...
community;
ONI's director, Rear Admiral
Walter Stratton Anderson, met weekly with his counterparts in the FBI and MID to gather and share information on suspected internal threats. In 1929,
Chief of Naval Operations
The chief of naval operations (CNO) is the highest-ranking officer of the United States Navy. The position is a statutory office () held by an Admiral (United States), admiral who is a military adviser and deputy to the United States Secretary ...
William D. Leahy made permanent ONI's functions as an intelligence office, while in 1939, President
Franklin D. Roosevelt
Franklin Delano Roosevelt (January 30, 1882April 12, 1945), also known as FDR, was the 32nd president of the United States, serving from 1933 until his death in 1945. He is the longest-serving U.S. president, and the only one to have served ...
granted the office considerable authority on matters of domestic security.
In the run up to Pearl Harbor, ONI was beset with challenges including disagreements with the
Chief of Naval Operations
The chief of naval operations (CNO) is the highest-ranking officer of the United States Navy. The position is a statutory office () held by an Admiral (United States), admiral who is a military adviser and deputy to the United States Secretary ...
and the
FBI
The Federal Bureau of Investigation (FBI) is the domestic Intelligence agency, intelligence and Security agency, security service of the United States and Federal law enforcement in the United States, its principal federal law enforcement ag ...
on who would in charge of naval counterintelligence both outside and with the borders of the United States. Partly as result of these challenges, ONI had four directors in the year 1941.
World War II
Following Japan's
attack on Pearl Harbor
The attack on Pearl HarborAlso known as the Battle of Pearl Harbor was a surprise military strike by the Empire of Japan on the United States Pacific Fleet at Naval Station Pearl Harbor, its naval base at Pearl Harbor on Oahu, Territory of ...
in 1941, concerns about subversive activity by Japanese Americans grew more pressing. ONI commissioned Kenneth Ringle, assistant district intelligence officer for the
Eleventh Naval District in Los Angeles, to conduct a thorough investigation of the resident Japanese population. He found little evidence of Japanese American saboteurs, and in his final report to President
Roosevelt, advised against
mass incarceration, a view that was shared by most ONI officials, but that was largely ignored by the Army and
War Department.
The
Second World War
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
would see another expansion of ONI's duties and a subsequent increase in its budget and staff. The office established two intelligence schools that trained hundreds of Intel officers for the Navy. Its Special Activities Branch offered critical intelligence on German
U-boat
U-boats are Submarine#Military, naval submarines operated by Germany, including during the World War I, First and Second World Wars. The term is an Anglicization#Loanwords, anglicized form of the German word , a shortening of (), though the G ...
technology, operations, and tactics, which proved decisive in the
Battle of the Atlantic
The Battle of the Atlantic, the longest continuous military campaign in World War II, ran from 1939 to the defeat of Nazi Germany in 1945, covering a major part of the naval history of World War II. At its core was the Allies of World War II, ...
. ONI supplied U.S. forces with ship and aircraft recognition manuals, provided photographic specialists for identifying enemy vessels, assisted in naval mission planning, and was responsible for the
translation
Translation is the communication of the semantics, meaning of a #Source and target languages, source-language text by means of an Dynamic and formal equivalence, equivalent #Source and target languages, target-language text. The English la ...
, evaluation, and dissemination of intercepted Japanese communications.
[
]
Cold War
While other parts of the Navy were downsized after the war, U.S. Fleet Admiral Chester Nimitz ensured ONI's continued strength, which was to prove important during the Cold War
The Cold War was a period of global Geopolitics, geopolitical rivalry between the United States (US) and the Soviet Union (USSR) and their respective allies, the capitalist Western Bloc and communist Eastern Bloc, which lasted from 1947 unt ...
. Secretary of the Navy James Forrestal
James Vincent Forrestal (February 15, 1892 – May 22, 1949) was the last Cabinet (government), cabinet-level United States Secretary of the Navy and the first United States Secretary of Defense.
Forrestal came from a very strict middle-cla ...
broadened ONI's mandate to include investigations of major criminal and security matters. In 1946, the Operational Intelligence Section was formed to provide fleet commanders with real-time analysis of the maritime activities and positions of foreign naval forces, namely the Soviet Navy
The Soviet Navy was the naval warfare Military, uniform service branch of the Soviet Armed Forces. Often referred to as the Red Fleet, the Soviet Navy made up a large part of the Soviet Union's strategic planning in the event of a conflict with t ...
. The Navy Field Operational Intelligence Office (NFOIO) was established in 1957 to provide more advanced signals intelligence
Signals intelligence (SIGINT) is the act and field of intelligence-gathering by interception of ''signals'', whether communications between people (communications intelligence—abbreviated to COMINT) or from electronic signals not directly u ...
and timely information on the intent of enemy forces.
ONI also made a concerted effort to enhance its technical and scientific resources, diversifying its personnel to reflect a wider range of expertise. The Navy Scientific and Technical Intelligence Center (NAVSTIC) was established in 1968 and shortly thereafter was folded into the Navy Reconnaissance and Technical Support Center (NRTSC). In response to the threat posed by nuclear-armed Soviet submarines, ONI developed the Sound Surveillance System (SOSUS) and the Ocean Surveillance Information system (OSIS), allowing the U.S. Navy to monitor and deter these threats.
Consolidation and transformation
Beginning in 1988, and following the dissolution of the Soviet Union
The Soviet Union was formally dissolved as a sovereign state and subject of international law on 26 December 1991 by Declaration No. 142-N of the Soviet of the Republics of the Supreme Soviet of the Soviet Union. Declaration No. 142-Н of ...
, ONI's headquarters was moved to its current location in the National Maritime Intelligence Center (NMIC) in Suitland, Maryland
Suitland is a suburb of Washington, D.C., approximately one mile (1.6 km) southeast of Washington, D.C. Suitland is a census designated place (CDP), as of the 2020 census, its population was 25,839. Prior to 2010, it was part of the Suitland ...
. It was joined by Coast Guard Intelligence (CGI), which is responsible for domestic maritime operations, and the Marine Corps Intelligence Activity, which supports expeditionary missions in Littoral zone
The littoral zone, also called litoral or nearshore, is the part of a sea, lake, or river that is close to the shore. In coastal ecology, the littoral zone includes the intertidal zone extending from the high water mark (which is rarely flood ...
s. The housing of all three of the nation's principal maritime intelligence agencies together was intended to facilitate data sharing and coordination.
ONI's duties and functions grew after the September 11 terrorist attacks in 2001 and the subsequent role played by the U.S. Navy in related conflicts in Afghanistan, Iraq, and the Horn of Africa. The year 2009 was characterized by a major reorganization of the office. Chief of Naval Operations Admiral Gary Roughead authorized ONI's conversion into a command
Command may refer to:
Computing
* Command (computing), a statement in a computer language
* command (Unix), a Unix command
* COMMAND.COM, the default operating system shell and command-line interpreter for DOS
* Command key, a modifier key on A ...
with four subordinate commands, each with a specialized function: scientific and technical intelligence, operational intelligence, information services and technology, and expeditionary and special warfare support. All four commands were collocated in NMIC, which was afterward designated by the Director of National Intelligence
The director of national intelligence (DNI) is a Cabinet of the United States#Current Cabinet and Cabinet-rank officials, cabinet-level Federal government of the United States, United States government intelligence and security official. The p ...
as the nation's central source for integrated strategic maritime intelligence.
The same year, the Information Dominance Corps (IDC) was established by the Navy to train enlisted sailors and officers in a wide range of supporting intelligence capabilities. The IDC was redesignated in 2016 as the Information Warfare Community (IWC), with a greater emphasis on inter-disciplinary expertise in sustaining the U.S. Navy's operational and technological superiority. ONI provides the IWC with critical maritime intelligence and real-time global maritime surveillance.
The 21st century has also seen an extension of ONI's support beyond the Navy and U.S. government and towards relevant academic and commercial partners. In addition to counter-terrorist activities, its concerns include anti-piracy efforts, surveillance of potential maritime conflict zones (such as the territorial disputes in the South China Sea), and monitoring the activities and developments in emerging rival navies (such as those of China, Russia, and Iran).
Organization and personnel
According to its official website, ONI's organizational structure is specifically designed to "strengthen the Navy's conventional and irregular war fighting capacities, and to expand our foresight into new technologies, future platforms, weapons, sensors, C4ISR and cyber capabilities".
ONI is based in the National Maritime Intelligence Center (NMIC), located on the grounds of the Suitland Federal Center in Suitland, Maryland. It is collocated with its five specialized subcommands, known as "Centers of Excellence" – the Nimitz Operational Intelligence Center, Farragut Technical Analysis Center, Kennedy Irregular Warfare Center, the Hopper Information Services Center, and the Brooks Center for Maritime Engagement. Since 2009, the facility has been designed to facilitate 24-hour-a-day coordination, collaboration, and analysis of maritime intelligence among ONI's subcommands, as well as its counterparts in the Marine Corps and Coast Guard. This integration is intended to offer both comprehensive and rapid intelligence to a broad range of stakeholders.
ONI is led by a commander, formally known as the Commander, Office of Naval Intelligence (COMONI), who also serves as Director of the National Maritime Intelligence-Integration Office (NMIIO), the national intelligence community center for maritime issues under ODNI. The COMONI's functions including fulfilling the national maritime intelligence duties required by the Navy, Department of Defense (DoD), and wider intelligence community.
There is also a Deputy Commander, who serves as the Commander’s primary assistant and adviser; a Chief Staff Officer, who directs the activities of staff directors and officers, and serves as the point of contact for other commands; and the Command Master Chief, who leads the enlisted personnel and advises the COMONI, Deputy Commander, and Chief of Staff on command policy.
ONI employs over 3,000 military and civilian personnel worldwide, including contractors. Its staff includes intelligence analysts, scientists, engineers, and other qualified specialists. In addition to its permanent staff, ONI is supported by more than 800 Navy Reservists, who assist the office during weekend drills and active duty.
Nimitz Operational Intelligence Center
Named after World War II Fleet Admiral
An admiral of the fleet or shortened to fleet admiral is a senior naval flag officer rank, usually equivalent to field marshal and marshal of the air force. An admiral of the fleet is typically senior to an admiral.
It is also a generic ter ...
Chester W. Nimitz, the Nimitz Operational Intelligence Center has responsibility for Maritime Domain Awareness (MDA) and Global Maritime Intelligence Integration (GMII), which allows it to maintain the U.S. Navy's warfighting superiority by delivering precise and timely information on the capability and position of naval and other maritime assets of interest.
Farragut Technical Analysis Center
Named for Admiral David Farragut
David Glasgow Farragut (; also spelled Glascoe; July 5, 1801 – August 14, 1870) was a flag officer of the United States Navy during the American Civil War. He was the first Rear admiral (United States), rear admiral, Vice admiral (United State ...
, the Farragut Technical Analysis Center is the U.S. Navy's Center of Excellence for strategic scientific and technical intelligence (S&TI) analysis of foreign technologies, sensors, weapons, platforms, combat systems, C4ISR, and cyber capabilities. In addition to its all-source capabilities, the Farragut Center conducts ONI's foreign materiel exploitation, signal intelligence analysis, modeling and simulation, and is home to the National Maritime Acoustic Intelligence Laboratory.
Kennedy Irregular Warfare Center
Named for President John F. Kennedy, the Kennedy Center provides support to Navy Special Warfare and Navy Expeditionary Combat Command forces by providing intelligence on potential threats posed by asymmetrical warfare
Asymmetric warfare (or asymmetric engagement) is a type of war between belligerents whose relative military power, strategy or tactics differ significantly. This type of warfare often, but not necessarily, involves Insurgency, insurgents, terro ...
. Analysts are often called upon to perform other tasks and duties within this specialized area.
Hopper Information Services Center
Named for Rear Admiral Grace Hopper, the Hopper Center provides information services that support global maritime and intelligence operations. Its staff consists of more than 850 information technology specialists based in 42 locations in 11 countries. The center also assists in the integration, testing, fielding, and maintenance of advanced technologies utilized by ONI and its centers.
Brooks Center for Maritime Engagement
Named for Rear Admiral Thomas A. Brooks, a former director of Naval Intelligence, the Brooks Center was established on 13 July 2016.
See also
* Director of Naval Intelligence
* Military Intelligence Corps - Army Intelligence
* Sixteenth Air Force - Air Force Intelligence
* Coast Guard Intelligence (CGI) - Coast Guard Intelligence
* Intelligence Directorate of the Main Staff of the Russian Navy - Russian equivalent
Notes
References
*
* ''Portions of this article are based on public domain
The public domain (PD) consists of all the creative work to which no Exclusive exclusive intellectual property rights apply. Those rights may have expired, been forfeited, expressly Waiver, waived, or may be inapplicable. Because no one holds ...
text fro
Office of Naval Intelligence
''
* ''Portions of this article are based on public domain
The public domain (PD) consists of all the creative work to which no Exclusive exclusive intellectual property rights apply. Those rights may have expired, been forfeited, expressly Waiver, waived, or may be inapplicable. Because no one holds ...
text fro
Digital National Security Archive
''
External links
Office of Naval Intelligence
* FOIA files on the ONI, hosted at the Internet Archive
The Internet Archive is an American 501(c)(3) organization, non-profit organization founded in 1996 by Brewster Kahle that runs a digital library website, archive.org. It provides free access to collections of digitized media including web ...
:
*
Part 75
*
Part 76
*
Part 77
*
Part 78
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Part 79
{{DEFAULTSORT:Office Of Naval Intelligence
Intel
Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California, and Delaware General Corporation Law, incorporated in Delaware. Intel designs, manufactures, and sells computer compo ...
Military intelligence units and formations of the United States
Military units and formations established in 1882
Organizations based in Washington, D.C.
Military in Washington, D.C.
Naval intelligence
Intelligence analysis agencies