JRC JSS-2150 Instruction Manual page 16

If a distress alert is received, make sure to inform the ship's captain or officer in charge.
Doing so may save the lives of the crews and passengers on the ship in distress.
1 1 . .
1 .
When a distress alert is received, the information such as the ID number of the ship in
distress and the stage of the distress event are displayed.
If the equipment is not used, i.e. there is no active procedure at that time, a distress and safety frequency is
set and the ALM lamp starts blinking, and an alarm gradually grows louder.
2 2 . .
2 .
Press the CANCEL
and press ENT.
After the specified communicate mode and the distress frequency are set, keep watch under such a condition.
Keep watch for five minutes or more, and executes the report to the coast station etc. as appropriate
3 3 . .
3 .
To acknowledge to the distress alert after coordination with the coast station, from the
above right screen, press
Then select ACK with jog dial and press ENT to send the acknowledgement.
After acknowledging the distress alert, communicate with the ship in distress as follows;
Say "MAYDAY".
Repeat the identity (MMSI) of the ship in distress 3 times
Say, "This is".
Repeat the identity (MMSI) of your ship 3 times
Say "RECEIVED MAYDAY".
xiv
Receiving a Distress Alert
WARNING
key to stop the alarm. If the popup screen is shown, select "Accept"
FUNC key to move the active screen to the message control area.