What is the distress signal at sea?

SOS is usually understood as "saving our ship" and "saving our soul". SOS is an international emergency distress signal, and its birth is directly related to popularization and rescue at sea.

/kloc-in the 0/9th century, navigation technology has been updated day by day, but no matter how the technology develops, if a ship is wrecked at sea, people on board are often unable to ask for help. With the invention of wireless telegraph, people began to use Morse code to transmit information, which became the gospel of maritime communication.

1896, wireless telegraph communication between the coast and the ship was realized for the first time. Two years later, a ship near the coast of England was successfully rescued by radio, which was the earliest record of radio rescue.

However, because there was no uniform standard for radio at that time, all kinds of distress signals were varied. 1903, the first international radiotelegraph conference was held, and the "CQD" proposed by Marconi Radio Company became an international distress signal. "CQ" means "all stations answer", followed by a "D" means "distress", which means "distress".

However, "CQD" is easily confused with the general term "CQ". 1906, a German expert suggested using "SOE" as a unified distress signal. In order to avoid misunderstanding or omission of the short sound "E" in Morse code, everyone finally decided to replace E with S. As a result, "SOS" became an internationally unified radio distress signal.

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Sending method of distress signal

1 Voice distress method When you are in trouble, you can shout, blow your whistle or slam the washbasin to send a distress signal to the surrounding area.

2, throwing soft objects for help when you are in danger in a tall building, you can throw soft objects, such as pillows, empty plastic bottles and so on. And send a distress signal to the ground.

3, stroboscopic method for help When you are in danger, you can use flashlights, mirrors and other methods to reflect the sun. Flashes 6 times per minute, pauses 1 minute, and repeats the same signal.

4, fireworks for help method When you are in distress in the wild, you can burn fresh branches, grass and other plants to emit smoke during the day; At night, dry wood can be lit, giving off bright fire and sending out distress signals to the surrounding area.

5. Field signal distress method uses branches, stones and other items to pile up "SOS" or other distress words on the open space, each word is at least 6 meters long, and sends a distress signal to the sky. Commonly used English words for help are SOS, SEND, DOCTOR, are and LOST.

Light. Com- Why is the international distress signal SOS?

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