| When can routine communications be resumed when radio silence has been imposed? |
| A) After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communications |
| B) If, in the Master's opinion, communications on that frequency will interfere 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) After determining that the frequency or channel appears to be no longer in use |
