July 1: SOS danger signals are approved and most commonly used in the world

Many people believe that SOS is an acronym for some rescue questions like "Save Our Ship"; "Save Our Souls" or "Send Out Succour", but it is not.

SOS is Morse code that represents danger signals and emergency rescue . This signal was adopted by the German Government on April 1, 1905 and became the international standard under the Radiotelegraphic Convention on July 1, 1908. Until now, SOS was recognized as a rescue signal. most recognizable.

Many people believe that SOS is an acronym for some rescue questions like " Save Our Ship"; "Save Our Souls " or " Send Out Succour" . However in reality SOS does not have its own meaning, nor an acronym.

This symbol is used simply because it is easy to remember, easy to send and easily recognizable by Morse code. SOS is also a signal with only 9 elements in Morse code, making it very recognizable. In Mores code, SOS is encoded into "· · · - - - · · ·".

Not only is the audio encoding signal , SOS is also known as visual rescue signal . If you have a flashlight, you can signal for help with an encryption, consisting of three short, three times long flashes and then three short times, like in Morse code.

In addition, 3 letters SOS can be painted on the ground or any surface to send a signal for help. Because these 3 letters can look upside down or look from above, they remain unchanged. Therefore, it is the most commonly used danger and rescue signal in the world.

Later, with the development of communication devices, several other short phrases were also used with the meaning of help."Mayday " is one of the most popular SOS audio rescue signals, adopted by the International Convention in 1927. " Mayday " is derived from the French " m'aidez" (meaning is help me).

During World War II, many other types of warning signals were used according to different circumstances. For example, SSS to warn of being attacked by submarines, RRR to warn being attacked by fighters, AAA to bombers, QQQ warns enemy warships.

The Titanic sent an SOS signal after crashing into the iceberg, so that many people could be saved when another ship received this signal.

However, all of these warning signals need to be sent with the SOS signal. Here is an example when broadcasting an SOS signal via radio or Morse code:

SOS SOS SOS (emergency signal) DE (word) GBTT GBTT GBTT (radio room) QUEEN ELIZABETH 2 (the name of the ship) PSN (location is) 49.06.30 N (North degree) 04.30.20 W (western degree) ). ON FIRE (burning ship) ABANDONING SHIP AR (crew and passengers are leaving the ship) K (ending the signal, someone receives please answer).