Receiving Distress Relay Calls - JRC JSS-2150 Instruction Manual

Operation
4 . 5 . 5 . 2

Receiving distress relay calls

4 . 5 . 5 . 2
As a general rule, ship stations should respond via radiotelephone after receiving a distress relay
call. But if called individually by another ship station, and if allowed by a coast station, a distress
relay acknowledgement can be transmitted as follows. Further, a distress relay acknowledgement
can be composed from the log of the received distress relay message.
■ ■
Procedure
1 .
1 .
1 .
When a distress relay call is received,
the screen at right is displayed.
The ALM lamp starts blinking, and the call
alarm gradually grows louder. However, the
aural alarm keeps silence in cases below;
- the distress position is not within 500nm and is
not in the polar areas (greater than 70°N/S), or
- duplicate all ships calls or area calls are
received within 1 hour.
The example message contains the
following information.
- Message type:
- To:
- Caller's MMSI:
Ship in distress MMSI:
-
-
Nature of distress:
-
Position & time:
-
Communication mode*: Radiotelephone
-
Sequence process*:
Receiving frequency*:
-
* Scroll to view
2 .
2 .
2 .
Press the CANCEL
the alarm, and the screen at right is
displayed.
Turn the jog dial to scroll the received
message. When the last line of the message
is reached the cursor moves to Accept.
3 .
3 .
3 .
Press ENT while Accept is selected to set
the radiotelephone mode's distress/safety
frequency to the band the distress
message was received on. The status
display is displayed to watch the distress
communications.
Keep watch for at least 5 minutes.
When acknowledging the distress relay,
follow the procedure described below.
4-76
Distress relay
message
Individual
(own ship)
431000123
431022222
Man overboard
North latitude
90º 00.0000'
East longitude
180º 00.0000'
23:57
ACK RQ
4207.5 kHz
key or ENT to stop
I D 4 3 1 0 0 1 2 3 4 T I M E 2 3 : 5 9 ( U T C )
P o s 8 9 ﾟ 5 9 . 0 1 2 3 ' N
1 7 9 ﾟ 5 9 . 6 7 8 9 ' E @ 2 3 : 5 9
T E L R x : 4 1 0 0 . 0 / T x : 4 1 0 0 . 0 k H z
R e c e i v e d d i s t r e s s m e s s a g e
T y p e : D i s t r e s s r e l a y
T o : I n d i v i d u a l
F r o m : 4 3 1 0 0 0 1 2 3
D i s t - I D : 4 3 1 0 2 2 2 2 2
N a t u r e : M a n o v e r b o a r d
P o s i t i o n : 9 0 ﾟ 0 0 . 0 0 0 0 ' N
1 8 0 ﾟ 0 0 . 0 0 0 0 ' E
U T C o f p o s : 2 3 : 5 7
[ A c c e p t ] [ C a n c e l ]
( E X T )