International Maritime Satellite Organization

international organization

Also known as: Inmarsat

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Last updated

June 29, 2026

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The International Maritime Satellite Organization (Inmarsat) is an international organization that provides communications services to the shipping and offshore industries. Comsat, a U.S. corporation, acts as the representative for the United States to Inmarsat. Inmarsat's services are regulated by the Federal Communications Commission.1

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space exploration
International participation
A similar consortium, the International Maritime Satellite Organization (Inmarsat), was established as an intergovernmental organization in 1979 to supply maritime and other mobile communications services via satellite; it also was later transformed into a privately owned entity. In addition, a number of regional organizations have been created to operate…
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A similar consortium, the International Maritime Satellite Organization (Inmarsat), was established as an intergovernmental organization in 1979 to supply maritime and other mobile communications services via satellite; it also was later transformed into a privately owned entity. In addition, a number of regional organizations have been created to operate…
Read More

mobile telephone
Satellite-based telephone communication
…airborne cellular systems that utilize Inmarsat satellites. However, the Inmarsat satellites are geostationary, remaining approximately 35,000 km (22,000 miles) above a single location on Earth’s surface. Because of this high-altitude orbit, Earth-based communication transceivers require high transmitting power, large communication antennas, or both in order to communicate with the satellite.…
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…airborne cellular systems that utilize Inmarsat satellites. However, the Inmarsat satellites are geostationary, remaining approximately 35,000 km (22,000 miles) above a single location on Earth’s surface. Because of this high-altitude orbit, Earth-based communication transceivers require high transmitting power, large communication antennas, or both in order to communicate with the satellite.…
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Comsat
representative to the International Maritime Satellite Organization (Inmarsat), which provides communications services to shipping and offshore industries. Intelsat and Inmarsat services are regulated by the Federal Communications Commission.
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representative to the International Maritime Satellite Organization (Inmarsat), which provides communications services to shipping and offshore industries. Intelsat and Inmarsat services are regulated by the Federal Communications Commission.
Read More