Question 55

The Correct Answer is D **Why option D ("16 (156.8 MHz)") is correct:** Channel 16 (156.8 MHz) is designated internationally as the primary distress, urgency, and safety channel, as well as the primary ship-to-ship calling channel (although most hailing has moved to Channel 13 or 16/70 combination for digital selective calling). Federal regulations (specifically FCC rules and international agreements) require vessels that are required to carry a VHF radiotelephone while underway to maintain a continuous listening watch on Channel 16. This ensures that the vessel can immediately receive and respond to any distress calls or urgent safety broadcasts. **Why the other options are incorrect:** * **A) 6 (156.3 MHz):** Channel 6 is designated primarily for inter-ship communications, often used for safety purposes between ships (e.g., towing operations) and communications with aircraft regarding safety. It is not the designated required listening watch channel for distress. * **B) 12 (156.6 MHz):** Channel 12 is generally designated for port operations and maneuvering, particularly communications between ships and shore-side facilities like bridges, locks, and terminals. It is not the required continuous listening watch channel for distress. * **C) 14 (156.7 MHz):** Channel 14 is similar to Channel 12, generally designated for port operations and ship-to-shore communications relating to safety and port traffic management. It is not the required continuous listening watch channel for distress.