display only when immediate or potential danger exists
display only when immediate or potential danger exists
display only when immediate or potential danger exists
Display only when immediate or potential danger exists
Display only when immediate or potential danger exists
Proper procedure for using hand held visual distress signal flare
Display only when immediate or potential danger exists
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The abbreviation for a distress signal is DS or SOS.
display only when immediate or potential danger exists
Display only when immediate or potential danger exists
Emergency distress signal
It is a DISTRESS Signal. NB Any national flag flown upside down is a signal for distress.