Signals and Emergency Communications
The Phonetic Alphabet

Alpha
Bravo
Charlie
Delta
Echo
Foxtrot
Golf
Hotel
India
Juliet
Kilo
Lima
Mike


November
Oscar
Papa
Quebec
Romeo
Sierra
Tango
Uniform
Victor
Whiskey
Xray
Yankee
Zulu
The International Distress Signal

6 blasts on a whistle. Pause for one minute (and listen for any reply) then repeat this cycle until help arrives

Alternatively:
Burning a red flare or orange smoke signal

SOS in Morse code: • • • — — — • • •


And the reply to expect if someone hears and acknowledges:
3 blasts on a whistle
A white flare