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3. DSC DISTRESS OPERATIONS
3-5
Press the CANCEL key to silence the audio alarm. Wait for the distress acknowledge
call from a coast station. If you do not receive the distress acknowledge call from a
coast station, which usually takes about five minutes from the time of receiving a dis-
tress alert, follow the flow charts in this section to determine your action.
Note: An asterisk (*) appearing in a distress alert message indicates an error at the
asterisk’s location.
In no case is a ship permitted to transmit a DSC distress relay call upon receipt of a
DSC distress alert on VHF channel 70.
Flow chart for determining if you should/should not transmit a distress ac-
knowledge call
DSC distress alert received.
Press the CANCEL key
to silence alarm.
Listen on CH16 for
5 minutes.
Did you receive
acknowledge from
CS and/or RCC?
No
No
No
Yes
Yes
Yes
Yes
No
Is distress traffic
in progress?
Is the DSC
distress call
continuing?
Is your ship
able to aid
ship in
distress?
Acknowledge the alert by
radiotelephone to the ship
in distress on VHF CH16.
Inform CS and/or RCC.
Enter details in log.
CS = Coast Station
RCC = Rescue Coordination Center
1. Say "MAYDAY" once.
2. Say ID number of ship in
distress three times.
3. Say "This is" (your ship's
name) once.
4. Say ID number of your
ship three times.
5. Say "Received MAYDAY"
once.