A.Class A EPIRBs
B.Class B EPIRBs
C.L-Band EPIRBs
D.Category I EPIRBs
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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
A.straight overhead
B.at the vessel whose attention you are trying to get
C.into the wind
D.about 60 degrees above the horizon
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?（）
What is the calling and distress frequency on a single side band (SSB) marine radiotelephone?（）
Distress signals may be（）.
When can routine communications be resumed when radio silence has been imposed?（）
The signal to guide vessels in distress，which indicates，“This is the best place to land” is the（）.
The Navigation Rules state that a vessel shall be operated at a safe speed at all times so that she can be stopped within（）.
Which signal is recognized as a distress signal?（）
What is the fundamental purpose for imposing radio silence? （）
When you are firing a pyrotechnic distress signal，it should be aimed at（）.