GMDSS Modernization 2024

The IMO package of SOLAS Chapter IV amendments revising the GMDSS to reflect new technology and recognized mobile-satellite services. Iridium was recognized as a GMDSS satellite provider through IMO Resolution MSC.451(99) in 2018, with service starting in 2020 alongside Inmarsat, ending the latter’s monopoly. The wider modernization, developed by the NCSR sub-committee, updates carriage requirements, recognizes additional services, and integrates newer maritime safety information delivery such as SafetyNET II. Revised SOLAS Chapter IV amendments under this program entered force on 1 January 2024.