The spoken word "Mayday". There is a specific format for a distress message. The mnemonic is M.I.P.D.A.N.I.O and it goes like this:
M - Mayday (repeated thrice)
I - Identification (name and number of craft)
P - Position (latitude and longitude and/or geographic location)
D - Distress (nature of distress e.g. sinking, fire, etc)
A - Assistance required
N- Number of persons onboard
I- Information (other pertinent information)
O- Over
http://www.mcaorals.co.uk/Distress.htm
S.o.s
sos
Mayday
SOS can be defined as the commonly used description for the international Morse code distress signal. This distress signal was first adopted by the German government in radio German regulations effective April 1, 1905, and became the worldwide standard under the second International Radiotelegraphic Convention, which was signed on November 3, 1906 and became effective on July 1, 1908. SOS remained the maritime radio distress signal until 1999, when it was replaced by the Global Maritime Distress Safety System. SOS is still recognized as a visual distress signal.
The flag used to indicate distress is the International Code Signal flag "N" (November), which is a square flag with a white and blue checkered pattern. Additionally, the widely recognized signal for distress is the International Distress Signal, which can be represented by a flag or by the use of other signals such as flares or sound signals. In maritime contexts, the "N" flag signifies that a vessel is in need of assistance.
Emergency Position Indicating Radio Beacon
The abbreviation for a distress signal is DS or SOS.
1. SOS 2. MAYDAY (from the French`M`aider `- Help me
SOS, the international Morse code distress signal, is a palindrome.
Brian found the radio in the survival pack that was left in the plane wreckage. He was able to use the radio to send out a distress signal and eventually be rescued.
*=1 second of light ∆=1 second in between (no light) *∆*∆*∆∆∆ ***∆***∆*** ∆∆∆*∆*∆*
Emergency distress signal