Coordinating Committee for Multilateral Export Controls

The Coordinating Committee for Multilateral Export Controls (CoCom) was established by the Western Bloc in the first five years after the end of World War II, during the Cold War, to put an embargo on Comecon countries. CoCom ceased to function on March 31, 1994, and the then-current control list of embargoed goods was retained by the member nations until the successor, the Wassenaar Arrangement, was established in 1996.

Membership
CoCom had 17 member states:



Despite being neutral, Switzerland joined the CoCom sanctions against the Eastern bloc countries; see.

Laws and regulations
In the United States, CoCom compliance was implemented in the 1960s via the Arms Export Control Act (AECA) and the State Department's regulatory supervision on AECA via International Traffic in Arms Regulations (ITAR), which are still in effect.

Violations
Toshiba Machine Company of Japan and Kongsberg Group of Norway supplied eight CNC propeller milling machines to the Soviet Union between 1982 and 1984, an action that violated the CoCom regulations. The United States' position is that this greatly improved the ability of Soviet submarines to evade detection. Congress moved to sanction Toshiba and ban imports of its products into the United States.

In a related case, French machine maker Forest Line exported several machines for fabricating fuselages for fighter planes and turbine blades for high-performance jet engines. This information came to light during an investigation by the Norwegian police into the Toshiba-Kongsberg scandal.

GPS
In GPS technology, the term "CoCom Limits" also refers to a limit placed on GPS receivers that limits functionality when the device calculates that it is moving faster than 1000 kn and/or at an altitude higher than 18000 m. This was intended to prevent the use of GPS in intercontinental ballistic missile-like applications.

Some manufacturers apply this limit only when both speed and altitude limits are reached, while other manufacturers disable tracking when either limit is reached. In the latter case, this causes some devices to refuse to operate in very-high-altitude balloons.

The Missile Technology Control Regime's Technical Annex, clause 11.A.3, includes a speed limit on GNSS receivers, set at 600 m/s.