Which of these can take place on an Inmarsat-C terminal that has synch with the NCS CC but has not yet performed a successful login?

Which of these can take place on an Inmarsat-C terminal that has synch with the NCS CC but has not yet performed a successful login?

• A. Reception of unscheduled MSI Urgency and Distress messages.
• B. Transmission of synoptic weather reports and company traffic.
• C. Reception of the mandatory scheduled BALD MSI messages.
• D. Reception of company traffic related to ship's business.

Answer: (A)

The reception of unscheduled MSI (Maritime Safety Information) urgency and distress messages can occur on an Inmarsat-C terminal that has established synchronization with the Network Control Station (NCS) Communication Control (CC) even before a successful login takes place. This is because MSI messages, which include vital safety information regarding navigation and distress situations, are designed to be broadcast messages that do not require individual terminals to be logged in. The system's priority is to ensure that vessels receive critical safety-related communications regardless of their login status, thus enhancing maritime safety. The capability to receive these urgent messages is essential, as it allows ships to remain informed in emergency situations, ensuring their safety and that of their crew and cargo. Other activities, such as the transmission of synoptic weather reports, reception of mandatory scheduled BALD MSI messages, and reception of company traffic related to ship's business, all typically require successful login to the Inmarsat network. The configuration and operational requirements of these messages necessitate a logged-in status for handling and routing to the appropriate interface, which is why they cannot occur until after a successful login.

The reception of unscheduled MSI (Maritime Safety Information) urgency and distress messages can occur on an Inmarsat-C terminal that has established synchronization with the Network Control Station (NCS) Communication Control (CC) even before a successful login takes place. This is because MSI messages, which include vital safety information regarding navigation and distress situations, are designed to be broadcast messages that do not require individual terminals to be logged in.

The system's priority is to ensure that vessels receive critical safety-related communications regardless of their login status, thus enhancing maritime safety. The capability to receive these urgent messages is essential, as it allows ships to remain informed in emergency situations, ensuring their safety and that of their crew and cargo.

Other activities, such as the transmission of synoptic weather reports, reception of mandatory scheduled BALD MSI messages, and reception of company traffic related to ship's business, all typically require successful login to the Inmarsat network. The configuration and operational requirements of these messages necessitate a logged-in status for handling and routing to the appropriate interface, which is why they cannot occur until after a successful login.