International Maritime Satellite Organization Ltd,

11 satellites in orbit, 10 operating.

The count is the catalogue’s as of Nov 9, 2026, 12:17 PM; whether a satellite is operating is as Orbinauts writes it where it has written when the satellite’s mission ended, and otherwise as Jonathan McDowell’s general catalogue believes it, licensed CC BY 4.0: GCAT

International Maritime Satellite Organization Ltd, is how GCAT, Jonathan McDowell’s general catalogue (CC BY 4.0), names the organisation under the code INMRL, of United Kingdom of Great Britain and Northern Ireland. This page gathers the satellites it flies and those of every organisation under it, each row naming the organisation that flies it.

SatelliteKindOrbit classLaunchedOperatingFlown by
INMARSAT 6-F2Communications satelliteInclined geosynchronousEnded
INMARSAT 6-F1Communications satelliteGeostationaryYes
INMARSAT GX5Communications satelliteGeostationaryYes
INMARSAT 5-F4Communications satelliteGeostationaryYes
INMARSAT 5-F3Communications satelliteGeostationaryYes
INMARSAT 5-F2Communications satelliteGeostationaryYes
INMARSAT 5-F1Communications satelliteGeostationaryYes
ALPHASAT (I-4A F4)Communications satelliteGeostationaryYes
INMARSAT 4-F3Communications satelliteGeostationaryYes
INMARSAT 4-F2Communications satelliteInclined geosynchronousYes
INMARSAT 4-F1Communications satelliteInclined geosynchronousYes