Quote:
Originally Posted by FIREWALL
older version of sos.
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Actuall SOS is the oldest, first being used in Germany in 1905. The others were created for specific usage in WW2, SSS=attacked by submarine, RRR=attacked by surface raider, AAA=attacked by aircraft, QQQ=attacked by unknown surface ship.
In the U-31 example, W=wind speed in metres and S=sea state...and yes, it's Beaufort.