NSR Marine NVR-3000 Operation Manual & Installation Manual page 44

Note: You must wait at least 5 minutes before you can acknowledge the distress call so that the coast station has
time to send a distress acknowledgement.
(1) Send the DSC distress acknowledgement to ship in distress :
If you do not receive the DSC distress acknowledgement from a coast station and you are able to aid the ship in
distress, you may transmit the distress acknowledgement to the ship in distress after consulting with the RCC or a
coast station.
Send acknowledgement on CH70 as follows:
① When you received a distress call, click CLICK to silence the audio alarm and stop the flashing of the LED.
② Wait 5 minutes after receiving a distress call.
③ If you do not receive the distress acknowledgement from a coast station and you have received the distress call
more than twice, contact the ship in distress on CH16 according to the following procedure.

Say "MAYDAY".

Repeat MMSI of the ship in distress 3 times.

Say "This is..." (own ship's name)

Repeat MMSI of own ship 3 times

Say "RECEIVED MAYDAY".
④ Click [OPTION], select [Ack].
NVR-3000 OPERATION MANUAL & INSTALLATION MANUAL
39 NVR-3000 OM.E 20230109-08