A.A triangular flag above or below a ball
B.The International Code Signal of distress indicated by "JV"
C.A green smoke signal
D.Flames on the vessel as from a burning tar barrel
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A.Class A EPIRBs
B.Class B EPIRBs
C.L-Band EPIRBs
D.Category I EPIRBs
A.At one hour intervals
B.At half hour intervals
C.Only when there is a chance of their being seen by rescue vessels
D.Immediately upon abandoning the vessel
A.Only when there is a chance of their being seen by rescue vessels
B.At half hour intervals
C.At one hour intervals
D.Immediately upon abandoning the vessel
A.Navigational warnings
B.Weather warnings
C.SAR and distress alert information
D.All of the above
A.Send a DSC cancellation message on Ch-70
B.Make a voice announcement to cancel the alert on Ch-16
C.Make a voice announcement to cancel the alert on Ch-13
D.Make a voice announcement to cancel the alert on Ch-22A
最新試題
Which condition represents the appropriate time for setting off distress flares and rockets? （）
Which of the following statements about transmitting distress messages by radiotelephone is INCORRECT?（）
Wat is NOT required in the radiotelephone log?（）
When a vessel signals her distress by means of a gun or other explosive signal，the firing should be at intervals of approximately（）.
Which is a distress signal? （）
When can routine communications be resumed on a frequency or channel on which radio silence has been imposed? （）
The service life of distress signals must be not more than（）.
When sending a DSC call，the vessel’s（）.
Which of the following statements about transmitting distress messages by radiotelephone is INCORRECT?（）
Distress flares and smoke signals for small passenger vessels（）.