7-A-032: Distress Relays
7-32E1:
Your ship received a Distress relay from a coast station on DSC freq. 2187.5 kHz. What action should the watch officer take?
Monitor 2182.0 kHz to determine if there are any genuine Distress communications.
Retransmit the DSC call on 2187.5kHz to other vessels in the vicinity to assist in SAR operations.
Transmit a voice "Mayday Relay" call on 2187.5 kHz to other vessels in the vicinity.
Transmit a voice "Mayday Relay" call on 2182.0 kHz to other vessels in the vicinity.
7-32E2:
Your ship received a Distress relay from a coast station on DSC VHF channel 70. What action should the watch officer take?
Monitor Ch-16 to determine if there are any genuine Distress communications.
Retransmit the DSC call on Ch-70 to other vessels in the vicinity.
Monitor Ch-06 to determine if there are any genuine Distress communications.
Transmit a voice "Mayday Relay" call on Ch-13.
7-32E3:
Under what condition would you not relay a DSC Distress alert?
A coast station DSC acknowledgement of the original Distress alert was received by your vessel.
If the mobile unit in Distress is incapable of further Distress alert communications.
If no Coast Station/Mobile Unit acknowledgement of the alert is observed.
No distress traffic has been heard and the DSC alert is unacknowledged via DSC.
7-32E4:
The relay of DSC Distress alerts:
Can quickly overburden the GMDSS systems in the vicinity with improperly transmitted or inappropriately relayed DSC calls.
Was not originally an intended function of the GMDSS system but now is the preferred method to notify an RCC.
Remains the preferred method for passing Distress message traffic to an RCC or Coast station.
Should always be done immediately to ensure a Coast Station receives the DSC Distress Alert.
7-32E5:
Transmission of a Distress alert by a station on behalf of another vessel actually in Distress should not occur:
When communications between the Distress vessel and a Coast station are already in progress.
When the mobile unit actually in Distress is not itself in a position to transmit the Distress alert.
When the Master or responsible person on the mobile unit not in Distress so decides.
When the responsible person at the Coast Station determines further help is necessary.
7-32E6:
DSC Relays of Distress alerts received from other ships should be done?
Only when the original DSC call is not acknowledged and no follow-on Distress traffic has been heard.
Only by Inmarsat-C TELEX with Distress priority conveying the follow-on Distress traffic that has been heard.
Only by Inmarsat-B voice or TELEX with Distress priority if no follow-on Distress traffic has been heard.
Preferably by MF/HF voice or TELEX directly to the RCC conveying the follow-on Distress traffic that has been heard.
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Color key:
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● = Unseen
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● = Weak
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● = Review
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● = Learned
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● = Incorrect answer
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