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 action should you take after sending a false distress alert on VHF?（）
When you are firing a pyrotechnic distress signal，it should be aimed at（）.
When can routine communications be resumed when radio silence has been imposed?（）
What is the fundamental purpose for imposing radio silence? （）
Distress flares and smoke signals for small passenger vessels（）.
Which signal is recognized as a distress signal?（）
When should distress flares and rockets be used? （）
Which EPIRB transmits a distress alert that is received and relayed by an INMARSAT satellite?（）
Which is NOT a distress signal? （）
The signal to guide vessels in distress，which indicates，“This is the best place to land” is the（）.