While underway, how frequently is the DSC controller required to be tested?
Official USCG Answer & Rule Citation
Correct Answer: Option A — Once a day
Daily testing of the DSC controller is a mandatory requirement under GMDSS operational procedures. This ensures that the digital alerting system, which is the primary method for initiating distress, urgency, and safety alerts, is operational and ready to transmit or receive critical data at all times while underway.
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