International Maritime Satellite Organization

9 satellites in orbit, 2 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 is how GCAT, Jonathan McDowell’s general catalogue (CC BY 4.0), names the organisation under the code I-INM, of International Maritime Satellite Organization. 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 3-F5Communications satelliteInclined geosynchronousYesInternational Maritime Satellite Organization
INMARSAT 3-F4Communications satelliteInclined geosynchronousEndedInternational Maritime Satellite Organization
INMARSAT 3-F3Communications satelliteInclined geosynchronousYesInternational Maritime Satellite Organization
INMARSAT 3-F2Communications satelliteInclined geosynchronousEndedInternational Maritime Satellite Organization
INMARSAT 3-F1Communications satelliteInclined geosynchronousEndedInternational Maritime Satellite Organization
INMARSAT 2-F4Communications satelliteInclined geosynchronousEndedInternational Maritime Satellite Organization
INMARSAT 2-F3Communications satelliteInclined geosynchronousEndedInternational Maritime Satellite Organization
INMARSAT 2-F2Communications satelliteInclined geosynchronousEndedInternational Maritime Satellite Organization
INMARSAT 2-F1Communications satelliteInclined geosynchronousEndedInternational Maritime Satellite Organization