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NETWORK · OPERATIONAL · GEO FLEET

Inmarsat.

A fleet of geostationary satellites parked over the equator. From the ground each one looks fixed in the sky, which gives big, stable spot-beams suited to higher-bandwidth voice and data. Coverage extends to about 76° north and south — everywhere except the poles.

±76°Latitude reach
GEOEquatorial fleet
35,786kmOrbit altitude
INM
● IN SERVICE
AMERICAS · 98°WEMEA · 25°EASIA-PACIFIC · 143.5°E
COVERAGE MAP · I-4 / ALPHASAT
±76° — GEO FOOTPRINT
Full voice + dataNo coverage — polar zonesINDICATIVE FOOTPRINT
▸ WHAT IT'S GOOD FOR

When the job needs bandwidth and a steady patch of sky.

Inmarsat is the network we reach for when the destination is known and the job needs real data: filing video from the field over BGAN, running a vessel on FleetBroadband, or keeping a base camp online. Because each satellite sits still in the sky, a pointed terminal holds a stable, higher-bandwidth link for hours.

The trade-off is geometry: the satellites sit over the equator, so the link needs a clear line of sight towards it, fades at very high latitudes and does not reach the poles. For routes that cross those limits we pair it with — or swap it for — Iridium.

Maritime & GMDSS
Fleet connectivity and recognised maritime safety services.
Field broadband
BGAN terminals for broadcast, aid work and remote offices.
Disaster response
Portable, quickly deployed voice and data when networks fail.
▸ THE TECHNICAL PICTURE
CONSTELLATION
GEO fleet
Geostationary, parked over the equator
LATENCY
~600 ms
Round trip via geostationary orbit
VOICE
IsatPhone 2
Long standby, dedicated safety button
DATA RATE
Up to 464 kbps
BGAN portable terminals
SAFETY
GMDSS
Recognised maritime safety services
COVERAGE
±76° latitude
Does not reach the poles
▸ INMARSAT KIT WE STOCK

Phones and terminals for this network.

ALL INMARSAT EQUIPMENT →
Inmarsat IsatPhone 2
INM–ISP2
HANDSET
Inmarsat IsatPhone 2
Workhorse GEO handset with exceptional battery and outstanding call clarity.
£662.33▸ VIEW
INM–BGAN
BGAN
Cobham Explorer 510 BGAN terminal
Compact BGAN terminal. Broadband data and voice from a unit that fits a jacket pocket.
£2,323.07▸ VIEW
▸ STILL DECIDING INMARSAT VS IRIDIUM?
Tell us the trip. We'll tell you the network — honestly.
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