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A ship receives a VHF DSC distress alert but no coast-station acknowledgement for more than 5 minutes. What is the correct escalation?
A
Immediately transmit a VHF DSC distress relay on channel 70
B
Attempt to contact the distress vessel on channel 16; if still no shore response and the situation warrants, inform a coast station/RCC by any practical means and consider transmitting a 'MAYDAY RELAY' call on channel 16 after authorisation/assessment
C
Wait indefinitely
D
Transmit on channel 6 to nearby ships only