What is the difference between Iridium GMDSS and Inmarsat GMDSS?

Space

Iridium GMDSS offers coverage, capability, and cost advantages over the existing option, providing mariners with enhanced safety at sea never before possible. Iridium GMDSS is the first and only GMDSS solution to offer truly global coverage, including above and below the 65th parallel, enhancing safety at sea and offering reliable coverage where Inmarsat does not. All Iridium Connected® GMDSS terminals come standard with functionality for all satellite GMDSS services and will initiate both Distress Alert and Safety Voice quickly with the press of just one button. The initial Iridium Connected GMDSS terminal from Lars Thrane is expected to supply all three satellite GMDSS services at about 25 percent of the cost of the current equipment required to do the same, allowing more vessels to access these life-saving services.

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