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  Inmarsat
 

Inmarsat was set up in 1979 by the International Maritime Organization (IMO) to enable ships to stay in constant touch with shore or to call for help in an emergency, no matter how far out to sea.


Today Inmarsat customers are found in many different sectors – but they are typically businesses and organisations that need to communicate where terrestrial telecom networks are unreliable or simply cannot reach. As well as merchant shipping, Inmarsat customers include governments, airlines, the broadcast media, the oil and gas industry, mining, construction, and humanitarian aid agencies – to name just a few.


They connect to Inmarsat fleet of 13 satellites using a range of equipment, including global handheld satellite phones and notebook-size broadband internet devices, as Inmarsatll as specialist terminals and antennas fitted to ships, aircraft and road vehicles.


Inmarsat business has grown strongly since 1999 when Inmarsat became the first intergovernmental organisation to transform into a private company, later floating on the London Stock Exchange (LSE: ISAT.L) in 2005.


In fact, today Inmarsat plc is the market leader in the provision of mobile satellite services, with the largest portfolio of global satellite communications solutions and value-added services on the market. With a presence in more than 60 locations across every continent, Inmarsat world-class products, services and solutions and 24/7/365 customer support facilities are available directly from Inmarsat, or – for the majority of customers – via Inmarsat worldwide network of independent Distribution Partners (DPs) and Service Providers (SPs).


Inmarsat Satellite Fleet

 

 

Satellite Range Longitude Shipper Orbital Date
Status/Services
Inmarsat-2 series
Inmarsat-2 F1     Delta III 6925 30 October 1990 Decommissioned 19 April 2013
Previous record holder for mission lifespan[24]
Inmarsat-2 F2 Por 143° east Delta III 6925 8 March 1991 Decommissioned Dec 2014
World record for mission lifespan[24]
Inmarsat-2 F3     Ariane 44L 16 December 1991 Decommissioned 2006
Inmarsat-2 F4     Ariane 44L 15 April 1992 Decommissioned 2012
Inmarsat-3 series
Inmarsat-3 F1 IOR 64.5° east Atlas IIA 3 April 1996 Existing and evolved services only
Inmarsat-3 F2 AOR-E 15.5° west Proton-K/DM1 6 September 1996 Existing and evolved services onlyi
Inmarsat-3 F3 POR 178.2° east Atlas IIA 18 December 1996 Existing and evolved services only
Inmarsat-3 F4 AOR-W 54° west Ariane 44L 3 June 1997 Existing and evolved services only
Inmarsat-3 F5 1-3Erupe, Middle-East, Africa 24.6° Ariane 44LP 4 February 1998 Various leases
Inmarsat-4 series
Inmarsat-4 F1 1-4 Asia-Pacific 143.5° east Atlas V 431 11 March 2005 BGAN family, SPS and lease services
Inmarsat-4 F2 1-4 Europa, Middle-East, Africa 64.4° east Zenit-35L 8 November 2005 BGAN family, SPS and lease services
Transferred from 25° east to 63° east in mid-2015[27]
Inmarsat-4 F3 1-4 Americas 98° west Proton-M/Briz-M 18 August 2008 BGAN family and lease services
Inmarsat-4A F4
(AlphaSat)
1-4 Europe, Middle-East, Africa 24.8° east Ariane 5 ECA 25 July 2013 BGAN family, SPS and lease services
Inmarsat-5 series
Inmarsat-5 F1 1-5 Europe, Middle-East, Africa 62.6° east Proton-M/Briz-M 8 December 2013 Ka-Band global data services, Global Xpress
Inmarsat-5 F2 1-5 Americas 55° west Proton-M/Briz-M 2 February 2015 Ka-Band global data services, Global Xpress
Inmarsat-5 F3 1-5 Pacific, Asia, West Americas 179.6° Proton-M/Briz-M 28 August 2015 Ka-Band global data services, Global Xpress
Inmarsat-5 F4     Falcon 9 FT 2017 Ka-Band global data services, Global Xpress

 

 

 

   

 

INMARSAT-2 AND INMARSAT-3 SATELLITES ALPHASAT AND INMARSAT-4 SATELLITES

 

INMARSAT-5 SATELLITES