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IALA
COLREG
COLREG
IALA
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GMDSS
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20:00
Ascolta il segnale. Cosa significa?
A
Distress — gun or other explosive signal at ~1 min intervals
B
Distress — SOS in Morse code, three short / three long / three short
C
Doubt or danger — I do not understand your intentions
D
Distress — continuous sounding of any fog-signal apparatus