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Iridium GMDSS

Iridium GMDSS

Iridium GMDSS is the first and only 'truly global' GMDSS solution, with the global Iridium NEXT satellite constellation providing coverage even over the Arctic and Antarctic waters of Sea Area A4.

Iridium GMDSS allows ships to send definitive location and identification information to a Rescue Coordination Centre (RCC), and with built in Safety Voice, speak to an RCC operator within 30 seconds of pressing the red distress button.  In addition, Iridium SafetyCast proactively delivers important navigational and meteorological information to the vessel, to advise of hazards and support safety measures.

The service is delivered by the small and lightweight LT-3100S GMDSS terminal, developed by leading manufacturer of maritime safety equipment, Lars Thrane. For the first time in history, mariners can sail in confidence with a global GMDSS service that has them covered, across all oceans of the world.

  • Real-time GMDSS emergency response system comprising:
    • Distress Alerting via red button
    • Safety Voice
    • Iridium SafetyCast broadcast of Maritime Safety Information (MSI)
  • High quality and low-cost equipment from Lars Thrane – the LT-3100S
  • IMO approved and regulated
  • Truly global coverage, including the polar Sea Area A4 regions
  • Powered by the Iridium NEXT global network of 66 cross-linked satellites

To speak to one of our friendly sales experts and find out more about Iridium GMDSS, please email

You can also find out more details of the LT-3100S GMDSS terminal via the product page listed below, or in our Resource Library.

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