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Mayday
This distress signal is for use only where there is grave and imminent danger to a vessel or person.
MAYDAY MAYDAY MAYDAY
This is: Vessel's name spoken three times followed immediately by MAYDAY(once)
This is - Vessel's name spoken once.
My position is - lat. and long. or range and bearing from known point, or named spot.
Nature of distress - eg. 'Sinking' or 'Crew Injured'.
Assistance required. - This is normally obvious.
Any other information.
Over.
PAN PAN
This is for when help may be needed, but the danger is not grave and imminent.
PAN PAN PAN PAN PAN PAN
Hello All Stations - Hello All Stations - Hello All Stations
This is - Vessels name spoken three times.
My position is - lat. and long. or range and bearing from known point, or named spot.
Nature of emergency.
Assistance Required.
Over.
SECURITE
Securite - the Safety signal - repeated three times (usually by a coastal station) indicates that an important navigational or meteorological warning will follow. Eg. a severe weather warning or a buoy out of position.
