Long-Range Identification And Tracking (LRIT)

What Is Long-Range Identification & Tracking?

  • LRIT is a global satellite-based system for real-time ship identification and tracking
  • Ships automatically transmit their position at least every six hours and can be polled on-demand to report their current position
  • LRIT information is sent to the vessel’s Flag Administration and is managed by the Application Service Provider (ASP) through Data Centers (DC) to fulfill LRIT requirements

Which vessels need to comply with LRIT?

  • All passenger and cruise ships, plus high-speed passenger craft
  • Cargo ships–including high-speed craft–of 300GRT and up
  • Mobile offshore drilling units

Iridium Connected™ LRIT Equipment

Standalone LRIT Terminals

BlueTraker® LRIT & BlueTraker® LRIT Arctic Transponders



  • Reliable, truly global solution for all vessels
  • Long operating life
  • Predefined position information and on-demand position polling
  • Learn more about BlueTraker LRIT


LRIT Arctic

Sirius One

  • Combined Short Burst Data® (SBD®), Vessel Monitoring System (VMS), and LRIT
  • Low-power combined GPS and GLONASS module
  • Usable in all geographical areas, including polar zones
  • Learn more about Sirius One

All-In-One LRIT Solution: GMDSS, LRIT, SSAS, Voice, Data

Lars Thrane LT-3100S

  • Installed and active LT-3100S GMDSS terminals can easily upgrade to LRIT compliance (Terminal firmware v1.06 or higher is needed)
  • The Iridium® GMDSS service must be active on the terminal
  • The LRIT service is active once the conformance test report is issued to the vessel by the competent authority. See the below list of supported Application Service Providers (ASPs)
  • Learn more and buy


Supported ASPs

LRIT Application Service Providers (ASPs):



Contact Us

Get in touch with Iridium's Maritime Team

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