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- Dictionarydis·tress sig·nal/dəˈstres ˌsiɡnəl/
noun
- 1. a signal from a ship or aircraft that is in danger.
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- Distress signal
Internationally recognized means for obtaining help
A distress signal, also known as a distress call, is an internationally recognized means for obtaining help. Distress signals are communicated by transmitting radio signals, displaying a visually observable item or illumination, or making a sound audible from a distance. Wikipedia
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