What is the requirement for maintaining a watch on VHF Ch-16?

The requirement for maintaining a watch on VHF Channel 16 (Ch-16) stems from its designation as the international distress, safety, and calling frequency. A watch is essential to ensure that distress calls and safety messages are promptly received and addressed. While there are specific scenarios, such as when a vessel is equipped with Vessel Traffic Service (VTS) systems, that require attention to other channels like Ch-13 or the VTS channel, there are exceptions regarding the mandatory watch on Ch-16.

Choosing to maintain a watch on Ch-13 and the VTS channel instead of Ch-16 does not meet the established maritime safety standards, as Ch-16 remains the primary channel for distress situations regardless of any additional communications specific to certain operations. Therefore, the requirement specifies that vessels must be capable of monitoring Ch-16 at all times while at sea.

This highlights the importance of prioritizing vigilance on Ch-16, which is essential for maritime safety, effectively ensuring that all vessels can communicate emergencies and receive vital safety information without delay.