What channel should a false distress alert be canceled on VHF?

To cancel a false distress alert on VHF, the appropriate channel to use is Ch-16. Channel 16 is the international distress frequency, and it is the standard channel designated for distress calls and emergency communications. According to maritime regulations, a vessel that has transmitted a distress alert in error must immediately communicate on Ch-16 to inform the maritime community that the distress situation is not real and that assistance is not needed.

Using Ch-16 for this purpose helps to prevent confusion and ensures that emergency services can focus on genuine distress situations. It is crucial to communicate promptly on this channel to maintain the integrity of maritime safety communications.

The other channels listed, while they may serve specific functions in maritime communication, are not the designated channel for distress alerts. For example, Ch-13 is primarily used for bridge-to-bridge communications, Ch-70 is utilized for DSC (Digital Selective Calling) emergency signals, and Ch-22A is generally employed for non-distress communications and maritime safety information.