Question 41

The Correct Answer is C **Explanation for Option C (Channel 16):** Channel 16 is the internationally recognized voice calling and distress frequency (156.8 MHz) used by ships, coast guards, and all marine facilities, including drilling rigs, equipped with VHF-FM radios. It is continuously monitored by most vessels at sea and shore stations. Maritime regulations require vessels and facilities to maintain a continuous listening watch on Channel 16 for safety, distress, urgency, and initial calling purposes. **Explanation of Incorrect Options:** * **A) Channel 1:** VHF Channel 01 (or Channel 1A, depending on the band plan) is typically reserved for ship-to-shore communications, usually handled through commercial traffic or port operations, but it is not the universal distress channel. * **B) Channel 10:** VHF Channel 10 is commonly designated as a secondary inter-ship working channel or a primary channel for certain port operations (e.g., environmental protection communications). It is a working frequency, not the official international calling and distress channel. * **D) Channel 68:** VHF Channel 68 is a simplex channel primarily designated for inter-ship and ship-to-shore working communications (e.g., vessel traffic coordination or routine business). It is not monitored continuously for distress purposes like Channel 16 is.