The best way to test the Inmarsat-C terminal is?
Official USCG Answer & Rule Citation
Correct Answer: Option B — Compose and send a brief message to your own Inmarsat-C terminal.
Composing and transmitting a short message back to the ship's own Inmarsat-C terminal confirms network entry, transceiver functionality, and satellite antenna line-of-sight without burdening coast earth stations.
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