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It is an emergency procedure word used internationally as a distress signal in voice procedure radio communications.

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It derives from the French venez m'aider, meaning "come help me". It is used to signal a life-threatening emergency primarily by mariners and aviators but in some countries local organisations such as police forces, firefighters, and transportation organizations may also use the term. The call is always given three times in a row " Mayday Mayday Mayday" to prevent mistaking it for some similar-sounding phrase under noisy conditions, and to distinguish an actual Mayday call from a message about a Mayday call.

A mayday situation is one in which a vessel, aircraft, vehicle, or person is in grave and imminent danger and requires immediate assistance. Examples of "grave and imminent danger" in which a mayday call would be appropriate include fire, explosion or sinking.

Position 54 25 North 33 West. My boat is on fire and sinking. I require immediate assistance.

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Four people on board, are taking a lifeboat. May Day unknown. A longstanding and historical tradition at Washington College , in which students get naked and run around on the green while hammered. It occurs every year on a weekend near the 1st of May. Legend goes that the first May Day was held by a professor in the 60's , along with several of his students.

How to radio a distress call

All I know is that I woke up the next day in someone else's room with a bite mark on my arm and a gash on my butt. I'm still not sure who bit me. The first definition is all wrong.

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May Day or Mayday is actually an anarchist and labor holiday, the true labor day, and has nothing to do with state communism. The story of May Day: In early May of , anarchist and labor activists rioted in Haymarket Square in Chicago in the name of winning an eight-hour workday. During that time, most capitalist bosses required their workers to work for 14 hours a day with little breaks or days off.

During the riot, someone threw a bomb. Five anarchists were accused of bomb-throwing or a conspiracy to do such and were tried, later convicted, and hanged. The call is always given three times in a row "Mayday mayday mayday" to prevent its being mistaken for some similar-sounding phrase under noisy conditions, and to distinguish an actual mayday call from a message about a mayday call.

The "mayday" procedure word was originated in , by a senior radio officer at Croydon Airport in London.

Since much of the traffic at the time was between Croydon and Le Bourget Airport in Paris, he proposed the expression "mayday" from the French m'aider 'help me' , a shortened form of venez m'aider 'come and help me'. Before the voice call "mayday", SOS was the Morse code equivalent of the mayday call.

In , the International Radiotelegraph Convention of Washington adopted the voice call mayday as the radiotelephone distress call in place of the SOS radiotelegraph Morse code call. If a mayday call cannot be sent because a radio is not available, a variety of other distress signals and calls for help can be used. Additionally, a mayday call can be sent on behalf of one vessel by another; this is known as a mayday relay.

Civilian aircraft making a mayday call in United States airspace are encouraged by the Federal Aviation Administration to use the following format, omitting any portions as necessary for expediency or where they are irrelevant capitalization as in the original source :. Making a false distress call is a criminal offence in many countries, punishable by a fine, restitution, and possible imprisonment. The suffix "medico" used to be added by vessels in British waters to indicate a medical problem "pan-pan medico", repeated three times , or by aircraft declaring a non-life-threatening medical emergency of a passenger in flight, or those operating as protected medical transport in accordance with the Geneva Conventions.

Sometimes the phrase "declaring emergency" is used in aviation, as an alternative to calling "mayday".

mayday - Wiktionary

However, the International Civil Aviation Organization recommends the use of the standard "pan-pan" and "mayday" calls instead of "declaring an emergency". The channel may not be used for normal working traffic until "seelonce feenee" or "prudonce" see below is broadcast. The expressions "stop transmitting — mayday" and "stop transmitting — distress" are aeronautical equivalents of "seelonce mayday" and "seelonce distress".

The call "prudonce" from the French pronunciation of prudence , 'caution' can also be used to allow important working traffic to resume on that channel before resolution of the emergency. From Wikipedia, the free encyclopedia.

The origins of May Day

Emergency procedure word used internationally as a distress signal. This article is about a distress signal. For the holidays celebrated on 1 May, see May Day.

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