7-1
7. DISTRESS OPERATIONS
7.1 How to Send the Distress Alert
Set the LES where to send the distress alert, referring to steps 1-3 in section 7.2.
When a life-endangering situation arises on your vessel and you do not have the time
to specify the nature of distress, do the following to send the distress alert to an LES
without specifying the nature of distress.
1. Open the cover of the DISTRESS button on the Terminal Unit IC-218 or the Dis-
tress Alert/Received Call Unit IC-305.
2. Press the DISTRESS button (approx. four seconds) until the lamp in the button
lights continuously. The distress alert will not be sent until the lamp in the button
lights continuously and the audio alarm sounds. The message "Sending Distress
Alert" (white characters on red background) appears on the screen while the dis-
tress alert is being sent.
Wait for acknowledgment of distress from an LES, which takes between 30 sec-
onds and 10 minutes. When you receive acknowledgment of the distress alert
from an LES, the message "Distress Acknowledgement Received" appears (white
characters on red background) on the screen, the lamp in the DISTRESS button
flashes slowly and the audio alarm sounds intermittently. To silence the audio
alarm, press the F10 key on the keyboard.
DISTRESS
button
Terminal Unit IC-218
Distress Alert/Received Call Unit IC-305
ACK
DISTRESS
button
Distress Acknowledgement Received
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