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 signal is recognized as a distress signal?（）
The distress message of a ship should include considerable information which might facilitate the rescue. This information should（）.
How is “radio silence” imposed?（）
When sending a DSC call，the vessel’s（）.
The regulations require that inspected vessels on an international voyage，other than small passenger vessels，must carry which of the following distress signals on or near the navigating bridge?（）
What is meant by the term “radio silence”?（）
If you are transmitting a distress message by radiotelephone you should（）.
When can routine communications be resumed when radio silence has been imposed?（）
Three short blasts of the whistle means（）.
When you are firing a pyrotechnic distress signal，it should be aimed at（）.