A distress signal is an internationally recognized means for obtaining help. Distress signals take the form of or are commonly made by using radio signals, displaying a visually detected item or illumination, or making an audible sound, from a distance.
A distress signal indicates that a person or group of people, ship, aircraft, or other vehicle is threatened by grave and imminent danger and requests immediate assistance. Use of distress signals in other circumstances may be against local or international law.
In order for distress signalling to be the most effective, two parameters must be communicated:
- Alert or notification of a distress in progress
- Position or location (or localization or pinpointing) of the party in distress.
For example, a single aerial flare alerts observers to the existence of a vessel in distress somewhere in the general direction of the flare sighting on the horizon but extinguishes within one minute or less. A hand held flare burns for 3 minutes and can be used to localize or pinpoint more precisely the exact location or position of the party in trouble. An EPIRB both notifies or alerts authorities and at the same time provides position indication information.
Other articles related to "distress signal, signal, distress":
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... The use of the SOS signal was first introduced in Germany as part of a set of national radio regulations, effective April 1, 1905 ... introduced three new Morse code sequences, including the SOS distress signal ... regulations adopted Germany's Notzeichen (distress signal) as the international standard, reading "Ships in distress shall use the following signal · · · — — — · · · repeated ...
... to leave Rion at the dojo and brings the other defenders with him to check out a distress signal ... still at Gatashin Prison, Rion responds to another distress signal, which turns out to be a trap ... to find out about Rion's disappearance, so they traveled to the second distress signal ...
... When the third salvo hit, the merchantman broadcast a distress call, identifying herself as British Union and saying she was under attack by an unknown vessel at 26°24′N 30 ... which the Germans assumed was a surrender signal, but as the raider closed to 4,000 yards (3,700 m), four shots were fired by the tanker ... The distress call and glow from the fires attracted the attention of the armed merchant cruiser HMS Arawa, which passed through the engagement site around midnight in pursuit, but failed to locate ...
Famous quotes containing the words signal and/or distress:
“By day thy warning ringing bell to sound its notes,
By night thy silent signal lamps to swing.”
—Walt Whitman (18191892)
“The basis of successful relief in national distress is to mobilize and organize the infinite number of agencies of self help in the community. That has been the American way.”
—Herbert Hoover (18741964)