Operating Rules and Procedures

Distress Signals

  • A distress signal is an internationally recognised way of calling for help: using radiocommunications, the recognised distress signals are:
  • Radiotelegraphy (Morse) SOS   • • •  — — —  • • • 
  • Radiotelephony (Voice)  Mayday
  • Such signals must only be used where there is grave and imminent danger to life