Satellite dishes on ship

A communications satellite or comsat is an artificial satellite sent to space for the purpose of telecommunications. Modern communications satellites use a variety of orbits including geostationary orbits, Molniya orbits, elliptical orbits and low (polar and non-polar) Earth orbits. ... They are ... used for mobile applications such as communications to ships, vehicles, planes and hand-held terminals, and for TV and radio broadcasting. ... land use for satellite phones are rigs at sea, a back up for hospitals, military, and recreation. Ships at sea often use satellite phones, and planes. [Communications satellite.