GMDSS: Element 7

1. A Distress alerting and receipt of Maritime Safety Information via Inmarsat for all vessels intending to operate in Sea Area A4.
2. B Distress alerting and receipt of MSI in Sea Areas A1, A2, A3, and A4 regardless of the vessel's intended area of operation.
3. C Distress alerting, general communications and receipt of Maritime Safety Information in the vessel's intended area of operation.
4. D General communications via Inmarsat and receipt of Maritime Safety Information via Enhanced Group Calling in Sea Area A4.

Tip: press A-D to answer