Which mode of communications is NOT possible through an Inmarsat-C SES?

Correct Answer: Option D — Shore-to-ship Facsimile

Inmarsat-C is a low-data-rate, store-and-forward system designed primarily for text and data messaging. It lacks the bandwidth and real-time connectivity required for voice or facsimile transmissions. Consequently, shore-to-ship facsimile is not supported, as the system is optimized for packetized data rather than continuous analog signals.