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An()indicates that there is imminent risk for navigation.
A.distress alert
B.urgency message
C.safety message
D.routine message
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A(n)()indicates that there is serious danger for vessel, crew and passenger.
A.distress alert
B.urgency message
C.safety message
D.routine message
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A(n)()indicates that is serious and inmmediate danger for vessel, crew and passengers.
A.distress alert
B.urgency message
C.safety message
D.routine message
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