LT-4200S GMDSS Certus 200 System

Certified Global Maritime Safety and Communications

The LT-4200S GMDSS is a next-generation Iridium Certus® 200 satellite communications system that combines distress, safety and everyday connectivity in a single Wheelmark-approved platform. Designed and manufactured by Lars Thrane A/S, the system provides 100% global coverage while meeting the latest SOLAS, GMDSS and maritime safety requirements.

From distress alerting and Maritime Safety Information (MSI) to voice communications, vessel tracking and IP connectivity, the LT-4200S delivers a complete ship-to-shore communications solution for commercial, offshore and government vessels operating anywhere in the world.

Key Benefits

• SOLAS GMDSS approved for Sea Areas A1, A2 and A3
• 100% global Iridium satellite coverage
• Distress Alert, Distress Call and Safety Services
• Integrated SSAS and LRIT functionality
• Up to three simultaneous voice channels
• IP data speeds up to 176 kbps uplink and downlink
• Simple single-cable antenna installation
• Seamless bridge integration with alarm systems and printers
• Designed for reliable operation in harsh maritime environments

Complete GMDSS Safety Communications

The LT-4200S is designed for the Iridium Certus GMDSS Safety Services and provides all essential safety functions required for compliant maritime operations.

The system supports:

• Distress Alert and Distress Call
• Safety Calling and Safety Messaging
• Maritime Safety Information (MSI)
• Ship Security Alert System (SSAS)
• Long Range Identification and Tracking (LRIT)

Combining these critical capabilities in a single certified solution helps vessels maintain compliance while enhancing onboard safety and operational awareness.

Reliable Connectivity Beyond Safety

More than a dedicated GMDSS terminal, the LT-4200S serves as a versatile communications platform for daily vessel operations.

The Certus® 200 service provides:

• Up to 176 kbps IP data connectivity
• Three high-quality voice channels
• Ship-to-shore and ship-to-ship communications
• Vessel tracking services
• Access to additional Iridium services

This combination of safety and operational communications makes the LT-4200S an ideal primary satellite communication system for vessels seeking reliable global connectivity.

Built for Demanding Maritime Environments

Engineered specifically for life at sea, the LT-4200S delivers dependable performance under challenging operating conditions.

The system is designed to withstand extreme temperatures from -40°C to +55°C, making it suitable for operations ranging from polar waters to tropical regions. With more than 40 years of design and engineering experience behind it, the LT-4200S offers exceptional reliability and long-term performance.

Flexible and Simple Installation

The LT-4200S has been designed for straightforward installation and maintenance.

The complete solution consists of:

• Control Unit
• Handset
• Antenna Unit

A single standard coaxial cable connects the antenna and control unit, with support for cable runs of up to 150 metres. This provides flexibility to position the antenna in the optimal location with a clear line of sight to Iridium satellites.

The control unit features a bright 4.3-inch TFT display for intuitive operation, while an integrated web server simplifies system configuration, service and maintenance.

Seamless Bridge Integration

The LT-4200S integrates easily with existing bridge and safety systems, helping operators create a streamlined communications environment.

Supported integrations include:

• Remote Alarm Panels
• GMDSS Printer
• Bridge Alert Management (BAM)

This enables straightforward integration into modern bridge architectures while supporting operational efficiency and regulatory compliance.