Furuno FS-1575 FS-2575 FS-5075 User Manual

1. Press the DISTRESS key.
2. Wait for the distress alert acknowledgement.
3. Communicate with the coast station.

GMDSS ships carry a DSC terminal with which to transmit the distress alert in the 
event of a life-endangering situation. A coast station receives the distress alert and 
sends the distress alert acknowledge call to the ship in distress. Then, voice or telex 
communication between the ship in distress and coast station begins. Transmission 
of the distress alert and receiving of the distress alert acknowledgement are complete-
ly automatic - simply press the DISTRESS key to initiate the sequence.

There are three types of distress alerts; MULTI, SINGLE, AUTO. MULTI is used nor-
mally. To use another method, see step 10 in paragraph 4.1.2.

Note: After sending the distress alert, no control unit has priority.

1. Open the DISTRESS key cover then press the DISTRESS key for four seconds. 

The audio alarm sounds while pressing the key, and the key flashes in red. The 
countdown message appears on the screen while pressing the DISTRESS key 
(3S 

→ 2S → 1S → 0S).

 

(3)

(2)

(1)

Ship in distress 
(Your ship)

(1) Ship in distress sends Distress Alert.
(2) Coast station sends distress acknowledgement (DIST ACK).
(3) Voice or telex communication between ship in distress and coast station.

Coast 

station

Countdown message

TX  2182 . 0 / RX  2182 . 00  kHz

MSG TYPE       : 

NATURE           : 

LAT                    :   

°

  12.1234’ N

LON/UTC          : 

°

 45.1234’ E / 12 : 34

COMM MODE    : 

DSC FREQ       :