Under GMDSS, a compulsory VHF-DSC radiotelephone installation must be tested at what minimum intervals at sea?
Official USCG Answer & Rule Citation
Correct Answer: Option A — Daily
IMO and FCC regulations require daily testing of the VHF-DSC radiotelephone installation to ensure the equipment is fully functional for distress alerting. This routine check confirms the integrity of the DSC controller and the antenna system, which are vital for immediate response during a maritime emergency.
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