🔍 Key Concepts

• Maritime Safety Information (MSI) as part of the Global Maritime Distress and Safety System (GMDSS) • The difference between satellite-based services and terrestrial (radio) services • Which systems are designed for broadcasting safety information versus voluntary reporting or two-way communication

💭 Think About

• Ask yourself: Which option is specifically described in GMDSS as a satellite broadcast service for MSI (navigational warnings, meteorological warnings, SAR information)? • Consider which choices are mainly ship reporting or communication systems rather than an automated safety broadcast system. • Identify which of the options is closely linked to EGC (Enhanced Group Call) services used in GMDSS.

✅ Before You Answer

• Verify which option is explicitly tied to satellite MSI broadcasts in GMDSS references. • Check whether each option is satellite-based or radio/terrestrial (e.g., MF/HF or VHF). • Confirm which system is associated with International SafetyNET service and EGC safety broadcasts.