Final IOR migration update: all services successfully migrated

The final migration of Classic Aero, Fleet 77, Swift 64 and Inmarsat C services (including Aero C and Mini C) from the Indian Ocean Region (IOR) I-3 to the Europe/Middle East/Africa (EMEA) I-4 was successfully completed on 12 December 2018.

Our primary objective was to ensure that the transition process was as seamless as possible with the minimum disruption caused to our customers and partners.

The transition of services from the I-3 fleet onto our I-4 constellation* started earlier in 2018. Our approach has been to migrate all services (Classic Aero, Fleet 77, Swift 64 and Inmarsat C), satellite by satellite, as per the schedule shown in the table below.

I-3 to I-4 migration Schedule
Atlantic Ocean Region West (AORW) I-3 to Americas (AMER) I-4 Classic Aero, Fleet 77 and Swift 64 services – migration successfully completed on 03 May 2018


Inmarsat C services (to include Aero C and Mini C) – migration successfully completed on 09 May 2018

Pacific Ocean Region (POR) I-3 to Asia/Pacific (APAC) I-4 Classic Aero, Fleet 77, Swift 64 and Inmarsat C services (to include Aero C and Mini C) – migration successfully completed on 29 August 2018
Atlantic Ocean Region East (AORE)* I-3 F2 moved to I-3 F5 Classic Aero, Fleet 77, Swift 64 and Inmarsat C services (to include Aero C and Mini C) – migration successfully completed on 30 October 2018
Indian Ocean Region (IOR) I-3 to Europe/Middle East/Africa (EMEA) I-4

Classic Aero, Fleet 77, Swift 64 and Inmarsat C services (to include Aero C and Mini C) –  migration successfully completed on 12 December 2018

* Note: AORE is part of the overall I-­3 to I­-4 migration programme but it did not move to the I­-4 constellation, it remained in the I-3 constellation.

Due to the move from the I-3 to the I-4 satellites*, the coverage areas have changed and users need to ensure that their devices are pointed to the relevant satellite. This process generally is managed automatically by the terminal without the need for user intervention. However, in some instances, users need to manually repoint their devices to the appropriate satellite.

  • Inmarsat C users should ensure that their local applications (e.g. data reporting) will operate correctly if they are using a different Inmarsat satellite and are advised to contact their applications provider for any support.
  • Classic Aero and Swift 64 users are advised to contact their equipment manufacturers to confirm whether a configuration update will be required to support the migration.

Each migration step caused a short outage while services were moved onto the corresponding satellite. Under supervision of the International Mobile Satellite Organisation (IMSO), the Global Maritime Distress Safety System (GMDSS) and Maritime Safety Services were closely monitored during the migration, as was the Classic Aero Safety Service. These safety services were restored first with the highest priority.

We are continuously monitoring our systems to ensure services have been restored to normal levels and will provide further details where necessary throughout the post-migration phase.

If you have any questions or concerns, please contact your Inmarsat representative, who will be able to assist.