5/1/2019: Inmarsat C users – FCC announces it will withdraw as an accounting authority in 2020

The FCC announced that it will stop performing the functions of an accounting authority for international maritime mobile communications on April 22, 2020. Users who have relied on the FCC as an accounting authority need to affirmatively select a different accounting authority prior to that date.


5/24/2018: U.S.-based Iridium to expand GMDSS to Polar regions

This international recognition enables Iridium to enter the market for the IMO-required distress communications system alongside the current provider, United Kingdom-based Inmarsat.


4/9/2018: Inmarsat network migration impact on maritime distress and safety services

Editor’s note: This post was updated April 10, 2018 to reflect that Inmarsat will begin the migration 1400 UTC May 9, 2018 instead of April 16, 2018, as originally announced. For the latest information, visit the Inmarsat website provided in our blog post. Inmarsat announced that it will migrate Inmarsat-C, Mini C, and Fleet77 used for Global Maritime Distress & Safety System, Long Range Identification and Tracking and Ship Security Alerting Systems from their I-3 to their I-4 Network.