Under which condition would you not relay a DSC Distress alert?

When a Distress alert is properly acknowledged, it indicates that the emergency has been recognized by the appropriate authorities, such as a Coast Station. In this case, the relay of the alert is unnecessary. The vessel in distress is already receiving support and assistance, thus the communication chain has been effectively established and any further relay of the Distress alert would only add unnecessary traffic to the channels used for emergency responses.

This understanding is crucial as relaying a Distress alert that has already been acknowledged could lead to confusion and clutter on communication channels, which are critical during emergencies. The focus of communication in such situations should be on facilitating the response and coordination of rescue operations rather than on repeatedly sending alerts that have been addressed.