GMDSS Information
EMERGENCY RADIO PROCEDURES

IF THE VESSEL OR A PERSON IS IN GRAVE AND IMMINENT DANGER AND IMMEDIATE ASSISTANCE IS REQUIRED:-

Check main battery switch is on, switch radio on to high power setting.
Select CH 16 (or 2182 kHz preceded by the two tone alarm).
PRESS TRANSMIT BUTTON, and say slowly and clearly:
Mayday, Mayday, Mayday
This is... (repeat name of vessel 3 times)
Mayday
This is...(Name of vessel spoken once)
My position is...(latitude and longtitude, or true bearing and distance from a known point).
IF YOU DON'T KNOW, DON'T GUESS!
I am...(sinking, on fire etc.)
I have...(number of persons on board and any other information - drifting, flares fired etc.)
I require immediate assistance
Over - this means please reply.
RELEASE THE TRANSMIT BUTTON
and listen for an acknowledgement.
KEEP LISTENING ON CH 16 (or 2182 kHz) FOR INSTRUCTIONS.
IF AN ACKNOWLEDGEMENT IS NOT RECEIVED THEN REPEAT THE DISTRESS CALL.

GMDSS Information

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