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The radiotelephony message PAN-PAN is the international standard urgency signal that someone aboard a boat, ship, aircraft, or other vehicle uses to declare that they need help and that the situation is urgent, [1] [2] [3] but for the time being, does not pose an immediate danger to anyone's life or to the vessel itself. [4]
At the dip (about half-way up the halyard): Ready to receive message Close up: Message has been received and understood (the flag is then hauled back at the dip to receive the next hoist) Hauled down: Signals end of message. With numerals: Decimal point By a warship: When flown over a hoist, indicates the message is to be read according to the ICS.
Urgency may refer to: Pan-pan, international radio calls for emergencies posing no imminent danger; Urinary urgency or Bowel urgency, medical symptoms;
Message precedence is an indicator attached to a message indicating its level of urgency, and used in the exchange of radiograms in radiotelegraph and radiotelephony procedures. Email header fields can also provide a precedence flag.
A Mayday message consists of the word "mayday" spoken three times in succession, which is the distress signal, followed by the distress message, which should include: Name of the vessel or ship in distress; Its position (actual, last known, or estimated expressed in lat/long or in distance/bearing from a specific location)
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This glossary of geography terms is a list of definitions of terms and concepts used in geography and related fields, including Earth science, oceanography, cartography, and human geography, as well as those describing spatial dimension, topographical features, natural resources, and the collection, analysis, and visualization of geographic ...
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