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
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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
A.Immediately upon abandoning the vessel
B.Only when there is a chance of their being seen by a rescue vessel
C.At one hour intervals
D.At half hour intervals
最新試題
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 the calling and distress frequency on a single side band (SSB) marine radiotelephone?（）
Upon receipt of a distress message，a merchant vessel is bound to proceed to the scene of the distress. Under which of the following cases would this NOT be true?（）
Which of the following statements about transmitting distress messages by radiotelephone is INCORRECT?（）
When can routine communications be resumed when radio silence has been imposed?（）
The distress message of a ship should include considerable information which might facilitate the rescue. This information should（）.
What is meant by the term “radio silence”?（）
Which signal is detected as originating from a SART?（）
What is the fundamental purpose for imposing radio silence? （）
If your vessel is underway in fog and you hear one prolonged and three short blasts，this indicates a（）.