Beams cover oceans and major landmasses
As Inmarsat was founded as a maritime communications operator, our first wholly-owned constellations – the Inmarsat-2 and Inmarsat-3 series – were positioned above the world’s sea-lanes to form four ocean regions:
- Atlantic Ocean Region West (AOR-W), at 54 degrees West
- Atlantic Ocean Region East (AOR-E), at 15.5 degrees West
- Indian Ocean Region (IOR), at 64 degrees East
- Pacific Ocean Region (POR), at 178 degrees East
The Inmarsat-2 satellites were decommissioned in 2013 and 2014 after more than doubling their expected lifespan of 10 years.
Following the full deployment of the Inmarsat-4 (I-4) satellite constellation in 2009, a further three satellite regions were created over the Earth’s major landmasses. They are:
- I-4 Americas, at 98 degrees West
- I-4 EMEA (Europe, Middle East and Africa), at 25 degrees East
- I-4 Asia-Pacific, at 143.5 degrees East.
From November 2013, I-4 EMEA is covered by Alphasat (I-4A F4) with a new footprint, as illustrated in the map below.
- I-4 satellite coverage, including Alphasat I-4A F4