GMDSS: Element 7

1. A After determining that the frequency or channel appears to be no longer in use.
2. B After determining that geographic distance from the Distress situation will prohibit any other signal from interfering with emergency communications.
3. 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.
4. D If, in the master's opinion, communications on that frequency will interfere with emergency communications.

Tip: press A-D to answer