GMDSS: Element 7R

1. A If the mobile unit in Distress is incapable of further Distress alert communications.
2. B If no Coast Station/Mobile Unit acknowledgement of the alert is observed.
3. C A coast station DSC acknowledgment of the original Distress alert was received by your vessel.
4. D No distress traffic has been heard and the DSC alert is unacknowledged via DSC.

Tip: press A-D to answer