Lars Thrane LT-3100S Iridium GMDSS Satellite Communications System

Product Overview

The Lars Thrane LT-3100S Iridium GMDSS Satellite Communications System is a fully integrated maritime safety and communication terminal designed to deliver global GMDSS compliance alongside reliable satellite voice and data services.

Operating on the Iridium satellite network, the LT-3100S provides true pole-to-pole coverage across all Sea Areas (A1–A4), including remote polar regions. It combines Distress Alert, Safety Voice and Maritime Safety Information (MSI) with everyday operational communications, making it a complete solution for professional maritime environments.

Key Features

• Global Iridium Coverage: True worldwide connectivity including polar regions (Sea Areas A1–A4)
• Certified GMDSS Services: Supports Distress Alert, Safety Voice and MSI via Iridium SafetyCast
• All-in-One System: Combines safety, voice, SMS and data communications in one terminal
• Single Cable Installation: Antenna connection via coaxial cable up to 500m for flexible installation
• Integrated GNSS/GPS: Accurate vessel positioning for distress alerts and navigation
• Compact Marine Design: Engineered for reliability in harsh maritime environments

What Is Included

• LT-3110 Control Unit with 4.3" TFT display
• LT-3120 Handset
• Handset Cradle
• LT-3130 Antenna Unit
• Control Unit Mounting Bracket
• Power Cable (approx. 3 metres)
• User and Installation Manual

System Capabilities

• Distress Alert: One-touch emergency alerting to Rescue Coordination Centres (RCC) with automatic vessel position transmission
• Safety Voice: Priority maritime voice communication for emergency coordination
• Maritime Safety Information (MSI): Receives weather forecasts, navigational warnings and safety alerts via Iridium SafetyCast
• Operational Communications: Supports satellite voice, SMS and data for daily vessel operations and crew welfare
• Integration Options: Compatible with ECDIS and Bridge Alert Management (BAM), with optional SSAS and LRIT support

Technical Specifications

• Network: Iridium (L-Band)
• Frequency: 1616 MHz – 1626.5 MHz
• Coverage: Global (Sea Areas A1–A4)
• Display: 4.3" TFT-LCD (480 x 272)
• Power Input: 12–24 VDC
• Antenna Operating Temperature: -40°C to +55°C
• Control Unit Operating Temperature: -15°C to +55°C
• Antenna Protection Rating: IP67
• Control Unit Protection Rating: IP32
• Maximum Cable Length: Up to 500 metres (coaxial)

Approvals and Certifications

• Designed to meet IMO and SOLAS GMDSS requirements
• MED (Wheelmark) approved
• CE certified
• FCC approved
• Compliant with international maritime safety standards

Ideal Applications

• Commercial Shipping: SOLAS vessels requiring global GMDSS compliance
• Fishing Vessels: Reliable communication in remote and high-latitude waters
• Workboats & Offshore Vessels: Compact, dependable safety and operational communications
• Yachts & Specialist Vessels: Professional-grade satellite communications with integrated safety features

Industries and Use Cases

• Commercial Maritime Transport
• Fishing and Marine Operations
• Offshore Energy and Support
• Government and Maritime Safety
• Leisure Marine and Yachting

Product Information

• Manufacturer: Lars Thrane A/S
• Model: LT-3100S
• Category: Maritime Satellite Communications / GMDSS
• Network: Iridium GMDSS Service
• Warranty: Typically 12 months (supplier dependent)