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Sos


1909 Liner "Arapahoe" is 1st ship to use SOS distress call

1909 SOS 1st used by an American ship, Arapahoe, off Cape Hatteras, NC

1906 International Radio Telecommunications Com adopts "SOS" as new call for help

1906 SOS adopted as warning signal by 1st conference on wireless telegraphy



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