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Press [ALARM STOP]
key to silence alarm.
DSC Distress alert received.
Listen on CH16 for
5 minutes.
Did you receive
acknowledge from
CS and/or RCC?
Is own
vessel able
to assist?
No
Is distress traffic
in progress?
No
Is distress call
continuing?
Acknowledge the alert by
radiotelphony to the ship
in distress on VHF CH16.
Yes
No
Inform CS and/or RCC.
Yes
Yes
Yes
Enter details in log.
No
CS = Coast Station
RCC = Rescue Co-ordination Center
1. Say "MAYDAY" ONCE.
2. Say ID number of vessel
in distress THREE TIMES.
3. Say "This is" ONCE.
4. Say ID number of your vessel
THREE TIMES.
5. Say "Received MAYDAY"
ONCE.
Flow chart - Action by ships upon reception of VHF DSC distress alert