Inmarsat Fleet 77 offers voice and the choice of mobile ISDN up to 64kbps or an always-on Mobile Packet Data Services (MPDS) for cost-effective, global communications.
Fleet 77 also meets the distress and safety specifications of the GMDSS for voice communication. Through four-stage voice pre-emption and prioritisation, the service supports the accreditation of ships’ systems and ensures high priority distress and safety needs are met.
The Fleet 77 service will close on 1 December 2020. More details of the end of life schedule can be found here.