CIA Maritime Branch: Operations, Lineage, and Training

The CIA Maritime Branch is the sea-based paramilitary arm of the Central Intelligence Agency’s Special Activities Center, staffed largely by naval special warfare veterans and responsible for clandestine vessel operations, the extraction of officers and assets, and the deployment of underwater surveillance technology in contested waters worldwide.¹²

Where the Branch Sits Inside the CIA

The Special Activities Center, formerly the Special Activities Division, is part of the CIA’s Directorate of Operations and traces its lineage to the World War II Office of Strategic Services. SAC has four branches: Ground Branch, Air Branch, Maritime Branch, and the Political Action Group. Each branch pulls from a different pipeline. Ground Branch recruits from units like Delta Force and the SEAL Teams; Air Branch handles aviation and historically used front companies such as Air America; the Political Action Group runs psychological operations and covert influence work; Maritime Branch draws from naval special warfare. Candidates across the branches are generally expected to have at least four years in a Special Operations unit along with combat experience.¹

The branch has not always had a clear identity. A former CIA officer described it as “mostly a place for former SEALs to hang out with between Ground Branch tours,” a comment that pointed to its ongoing competition with U.S. Navy programs that also run maritime assets under commercial cover.²

What the Maritime Branch Does

Maritime Branch covertly operates sea vessels in South America, West Africa, and other locations globally. Those vessels are used to move officers, extract recruited assets, and support other clandestine tasking. Ships are commercially covered, meaning they are outfitted and papered to appear as ordinary commercial traffic. For underwater work, operators use commercial-grade scuba equipment chosen for deniability, so that a compromised or captured operator leaves no obvious U.S. government fingerprint.²

The branch also fields specialized electronic intelligence pods. Some are disguised as natural objects such as rocks and carry classified electronics that passively intercept signals from naval vessels. That signals-collection capability is a key part of the branch’s argument for its own relevance within the broader intelligence community.²

The 2008 South China Sea Mission

The most publicly known Maritime Branch operation ended with the deaths of four paramilitary operations officers on a covert mission against China in 2008. It was framed as a proof of concept for the branch. A small team was to plant a rock-shaped tracking device just beneath the surface in the Philippine and South China Seas to passively monitor electronic signals from People’s Liberation Army Navy vessels.²

The four officers were Stephen Stanek, the team leader and a former Navy ordnance disposal diver; Michael Perich, a U.S. Merchant Marine Academy graduate; Jamie McCormick; and Daniel Meeks. They left Malaysia aboard a 40-foot vessel under fake documents that described the boat as being transported to Japan for a Japanese company.³

Weather forecasts warned of Tropical Storm Higos moving into the team’s area of operations off the coast of Luzon in the Philippines. Stanek decided to press on. The team sailed into the storm, the vessel was lost, and none of the four men were heard from again. Their bodies were never recovered.³²

The CIA later informed the officers’ families of their true employment and held a private ceremony at Langley. Four stars on the agency’s Memorial Wall are attributed to the men lost on the mission.³²

The Operational Lineage Behind the Branch

CIA sea operations predate the Maritime Branch as a named unit, and three earlier efforts explain much of its culture and playbook.

Korea and JACK

During the Korean War, the CIA ran clandestine sea operations through the Joint Advisory Commission, Korea, or JACK. Headquartered in Tongnae and operating out of Yong Do Island near Pusan, JACK ran the insertion and extraction of intelligence agents along the North Korean coast, coastal demolition raids, prisoner snatches, and the rescue of downed United Nations pilots. Personnel came from the OSS, British SOE, Army Rangers, paratroopers, and Navy Underwater Demolition Teams. Major John K. “Jack” Singlaub served as military deputy of JACK and the CIA’s deputy station chief for Korea.⁴⁵

JACK relied on Japanese-built 85-ton diesel trawlers disguised as commercial fishing boats, so-called Q-boats, along with Navy high-speed destroyer transports for offshore launch of rubber boats. The tactics were costly and often chaotic, but the model of using small covert trawlers and rubber-boat infiltration went on to shape MACV-SOG operations in Southeast Asia.⁶⁴

The Bay of Pigs

The most infamous CIA amphibious operation was the 1961 Bay of Pigs invasion. The agency secretly leased Useppa Island in Florida to train Brigade 2506, a Cuban exile force, in amphibious assault and guerrilla warfare. The original target was Trinidad; the landing site was switched to the Bay of Pigs a month before the operation. On April 17, 1961, the brigade landed by sea. The USS Houston was hit by Cuban rockets and had to be intentionally beached. The USS Rio Escondido, loaded with aviation fuel, was sunk by machine-gun fire and rockets. Two landing craft were destroyed. American destroyers tried to enter the bay to evacuate survivors but were driven off by Cuban gunfire, and only a handful of brigade members were pulled from the water.⁷

Project Azorian

The most ambitious CIA maritime undertaking was Project Azorian, the covert effort to raise a sunken Soviet submarine from the Pacific. The target was the K-129, a Golf II-class ballistic missile submarine that went down in mid-March 1968 roughly 1,560 miles northwest of Hawaii at a depth of 16,500 feet. The CIA stood up a Special Projects Staff on July 1, 1969, led by John Parangosky. President Nixon approved the project in August 1969, and Director of Central Intelligence Richard Helms placed it inside the “Jennifer” security compartment.⁸

At an estimated cost of roughly $500 million in 1974 dollars, the agency built the Hughes Glomar Explorer, a purpose-built recovery vessel. Its keel was laid in November 1971 at Sun Shipbuilders in Chester, Pennsylvania, and its cover story described it as a deep-sea mining ship harvesting manganese nodules for Howard Hughes. Salvage began on July 4, 1974. During the lift on August 8, 1974, the submarine section broke apart and part of it fell back to the seafloor. What was recovered included the remains of six Soviet submariners, who received a formal military burial at sea. In 1992, Director of Central Intelligence Robert Gates presented a film of that ceremony to Russian President Boris Yeltsin. The CIA declassified the substantive history of Project Azorian on February 12, 2010.⁹

Where Training Happens

Paramilitary training for CIA operatives, including those bound for maritime work, has historically been run at Harvey Point Defense Testing Activity, a classified facility on a 1,200-acre peninsula on the Albemarle Sound near Hertford, North Carolina. Officially listed as a Pentagon installation, it has been identified by local officials as a CIA base and was established in 1961, just weeks after the Bay of Pigs failure.¹⁰

The site has trained thousands of CIA officers and select foreign nationals in advanced demolitions, paramilitary warfare, surveillance, and unconventional weaponry. Its waterfront includes concrete seaplane ramps originally built for the Navy’s Martin P6M Seamaster program and a small marina built by the CIA. Underwater demolitions training for foreign operatives has been conducted there.¹¹

Current Pressures on the Branch

Maritime Branch still functions within the broader SAC framework, which operates on what has been described as a CIA-JSOC fusion model combining human intelligence with direct-action capability. That model, built during the post-9/11 wars, is under strain. A March 2026 hearing before the House Armed Services Committee’s Intelligence and Special Operations Subcommittee on special operations posture for fiscal year 2027, and a companion analysis in the Small Wars Journal, flagged resourcing and oversight gaps that could threaten the sustainability of the SAC’s partnership with Joint Special Operations Command.¹¹²

Budget and modernization pressures across the special operations enterprise fall hard on a niche unit like the Maritime Branch, which has long competed with Navy programs for resources and operational relevance. Whether it can carve out a durable mission in an era of great-power competition with China, the same theater where it lost four officers in 2008, remains an open question within the intelligence community.

1
Small Wars Journal. CIA Special Activities Center Global Response Staff Covert Operations
2
The War Zone. How the CIA’s Adrift Maritime Branch Lost Four Men on a Doomed Spy Mission Against China
3
intelNews.org. CIA Maritime Branch Officers Lost in South China Sea Mission
4
HistoryNet. Korean War CIA-Sponsored Secret Naval Raids
5
ARSOF History. JACK Maritime Operations
6
ARSOF History. JACK Operations
7
Central Intelligence Agency. The Bay of Pigs Invasion
8
National Security Archive, George Washington University. Project Azorian
9
Central Intelligence Agency. Project Azorian
10
The New York Times. Is the Explosion-Noisy Base a CIA Spy School
11
INDY Week. Bomb School
12
House Armed Services Committee. ISO Subcommittee Hearing: U.S. Special Operations Forces and Command