Safety, Fire & Survival · GMDSS — DSC
Digital Selective Calling (DSC) on VHF Channel 70 is used to:
- ACarry voice conversations
- BTransmit a digital distress alert and to initiate routine/safety calls✓ Correct
- CReceive weather facsimile
- DBroadcast television
Explanation
VHF Ch 70 is reserved for DSC. A distress alert sent by DSC includes the vessel's MMSI and, if interfaced, position and time; voice communications then follow on Channel 16.
Authority: SOLAS Chapter IV (GMDSS); ITU Radio Regulations
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