Ian Waugh - A Mariner\'s Guide to Marine Communications

(John Hannent) #1

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Log Example2: DSC Distress Acknowledgement received from another vessel - casualty's position is
not in steaming distance from your own vessel (own vessel is' WizardlGWIZ'; vessel '232999999' sent
the DSC Distress Acknowledgement)

Date/time Station Station
UTC To From
27.10.01
0400
0530 All Stations 232999999

0530
0530/
/35
0535

Remarks

59 25N 001 12W (DSCs updated) J Uhuru
Distress Ack' - 232456789 - 29 20S 007 OlE
@ 0515UTC - sinking -J3E
On Watch J Uhuru
(nothing heard - casualty position S Atlantic -
no further action required) (Master informed)
Off watch J Uhuru
Author's explanation:

Frequency
Channel or
Satellite

2187.5kHz
2182kHz

MF/HF DSC Alerts can travel around the world - especially at night -so you may receive Distress Alerts;
Distress Relays;
and Distress Acknowledgements which originated at a great distance from your own position.
When you receive a DSC Distress Relay/Distress Ack' you should monitor the voice frequency to make sure that
the casualty is not near your location (there may be a mistake in the received DSC Relay/Ack). If you hear
nothing on the voice channel after 5 minutes; and the position indicated in the DSC Alert indicates that the
casualty is not within steaming distance from your own location, you can discontinue the watch on that frequency


  • making an appropriate entry in the log. You should not take it upon yourself to 'Relay' any DSC Distress
    Relay/DSC Distress Acknowledgement that you have received, regardless of origin.

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