Which shipboard equipment can receive SafetyNETTM messages?

The correct answer is the Inmarsat-C EGC receiver because it is specifically designed to receive SafetyNETTM messages. SafetyNETTM is a global service that provides safety-related information via satellite, particularly for maritime users. The Inmarsat-C system incorporates an Enhanced Group Calling (EGC) capability, allowing ships to receive important navigational and safety information without requiring continuous monitoring.

This receiver operates through the Inmarsat satellite network, allowing for the dissemination of critical SafetyNETTM messages directly to vessels, ensuring that captains and crew have up-to-date information regarding hazards, weather alerts, and other safety-related announcements.

In contrast, while NAVTEX is a system for broadcast of navigational and meteorological warnings, it does not specifically handle SafetyNETTM messages. The MF and HF SITOR, which stands for Ship-to-Ship and Ship-to-Shore communication systems, utilize Narrow-Band Direct Printing but are generally not used for the direct receipt of SafetyNETTM messages either. Similarly, although the Inmarsat F77 system provides communications services, it does not specialize in the reception of SafetyNETTM messages separate from the capabilities provided by Inmarsat-C EGC receivers.