A.After determining that the frequency or channel appears to be no longer in use
B.After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communications
C.Routine communications can resume after the Rescue Coordination Center transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concluded
D.If,in the Master's opinion,communications on that frequency will interfere with emergency communications
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A.After determining that the frequency or channel appears to be no longer in use
B.After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communications
C.After the Rescue Coordination Center transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concluded
D.Routine communications can resume if,in the Master's opinion,communications on that frequency or channel will not interfere with emergency communications
A.10 minutes
B.1 minute
C.1 hour
D.3 minutes
A.To ensure that interference to proprietary communications is minimized
B.To ensure that only voice communications can be effected on the distress frequency or channel
C.To ensure that a distressed vessel will have a "window" twice each hour for transmitting routine messages
D.To ensure that interference on a particular frequency or channel to communications concerning emergency traffic is minimized
A.1492 kHz
B.1892 kHz
C.2082 kHz
D.2182 kHz
A.Red flares or red rockets
B.Continuous sounding of fog signaling apparatus
C.International Code Flags "November" and "Charlie"
D.Basket hanging in the rigging
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?()
How is “radio silence” imposed?()
When can routine communications be resumed when radio silence has been imposed?()
When can routine communications be resumed on a frequency or channel on which radio silence has been imposed? ()
What is the fundamental purpose for imposing radio silence? ()
Distress signals may be().
Which of the following statements about transmitting distress messages by radiotelephone is INCORRECT?()
If you log a distress message,it must include the().
Which signal is detected as originating from a SART?()
Which signal is recognized as a distress signal?()