A.A continuous sounding with any fog signal apparatus
B.A signal sent by radiotelephone consisting of the spoken word "Mayday"
C.An International Code Signal of N.C.
D.The firing of green star rockets or shells
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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
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
最新試題
Which of the following statements about transmitting distress messages by radiotelephone is INCORRECT?（）
Which is a distress signal? （）
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?（）
When sending a DSC call，the vessel’s（）.
Which signal is recognized as a distress signal?（）
If you are transmitting a distress message by radiotelephone you should（）.
Which condition represents the appropriate time for setting off distress flares and rockets? （）
Three short blasts of the whistle means（）.
The Navigation Rules state that a vessel shall be operated at a safe speed at all times so that she can be stopped within（）.
When can routine communications be resumed when radio silence has been imposed?（）