Important information from Marlink concerning changes in Inmarsat C coverage over the Greenland Sea after the migration of Inmarsat AOR-E satellite from 15.5W to 54W
Lack of Inmarsat C coverage in Greenland Sea
Lack of Inmarsat C coverage in Greenland Sea Due to the planned migration of the Atlantic Ocean Region East (AOR-E) from 15.5W (I-3 F2 satellite) to 54W (I-3 F5 satellite), scheduled to take place on 30 October 2018 at 11:00 UTC, there will be a change in Inmarsat C coverage over the Greenland Sea between Greenland and Norway. This situation is unavoidable due to the approaching end-of-life of the Inmarsat I-3 satellites.
The area affected by the AORE migration is between Svalbard and Greenland in the Greenland Sea. It is difficult to define the exact region, as the precise service availability for Inmarsat C in this area depends on the terminal type, the location of the terminal, the operation of the vessel (roll and pitch), the time of day and the local environmental conditions.
Where is the affected area? The area in question is shown in cross-hatched green in the map below. This area includes part of NAVAREA 1 (coordinated by UK) and part of NAVAREA 19 (coordinated by Norway). Note that this is a simplified map that shows only the 54W, 15.5W and 64E Inmarsat I-3 satellites. The 98W and 143.5E satellites do not cover the affected area, therefore, they are not shown on this map.
The Inmarsat C coverage in the affected area will be improved as soon as the Indian Ocean Region Satellite (IOR) is migrated from 64E to 25E, currently planned to take place around mid-December 2018. The period between the migrations of AORE and IOR is being kept as short as possible to reduce the impact on users. Inmarsat currently expect this period to extend to about 6 weeks, however, Inmarsat will provide more information once they confirm the schedule.