Question 16 Deck Safety

70% to pass

What is the action that a GMDSS Radio Operator should take when a DSC distress alert is received?

A The Operator should immediately set continuous watch on VHF channel 70.
B The Operator should immediately set continuous watch on the NBDP frequency that is associated with the frequency band on which the distress alert was received.
C The operator should immediately set continuous watch on the radiotelephone frequency that is associated with the frequency band on which the distress alert was received.
D No action is necessary, as the DSC control unit will automatically switch to the NBDP follow- on communications frequency.
AI Explanation

The correct answer is C) The operator should immediately set continuous watch on the radiotelephone frequency that is associated with the frequency band on which the distress alert was received. This is the correct action because the GMDSS regulations require the radio operator to monitor the associated radiotelephone frequency after receiving a DSC distress alert. This allows the operator to receive any follow-up voice communications related to the distress situation. The other options are incorrect because: A) setting watch on VHF channel 70 is not necessary, as the distress alert would have been received on that channel already; B) setting watch on the NBDP frequency is not the appropriate action; and D) the DSC system does not automatically switch to the NBDP frequency.

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Official Resources
46 CFR Lifesaving Equipment USCG Marine Safety Center USCG National Maritime Center
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