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

(John Hannent) #1

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Log example 2: Distress Alert received on 2187.5kHz (by sky wave propagation - casualty is too far distant
for you to go to their assistance; casualty makes contact with a Coast Station/MRCC);

Date/time Station
UTC To
27.1O. 01
0400
0520

0520
0521
05211 Mayday

/ 23
0523 justina

0525

Station
From Remarks

59 25N 041 12W (DSCs updated) j Uhuru
232456789 Distress Alert 49 20N 010 01 W @ 0400UTC
Sinking J3E
On Watch j Uhuru
002320014 DSC Ack' (details as above)
justinalGJUS1232456789
49 22N 010 50W struck submerged
object and sinking - Rq immediate assistance
Falmouth C/G R Mayday - POB? (25 POB) (R)
(vssl in contact with Falmouth CG. Master
informed. Casualty out of reach of Wizard
and in range of UK based rescue units.
No further action reqUired)
Off Watch j Uhuru
Author's explanation:

Frequency
Channel or
Satellite

2187.5kHz

2182kHz
2187.5kHz

2182kHz
"

Wizard's DSC system has no GPS attachment -positions are updated manually every 4 hours. Comparing the
casualty's position with that of 'Wizard', it is clear that we are not close enough to help with the SAR operation - but
we can make sure that the casualty makes radio contact with a Coast Station/MRCC, or another other vessel. (We now
have to keep silent on 2182kH;:. whilst distress working is in progress, to avoid interfering with that distress working)
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