GMDSS: Element 7

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 No distress traffic has been heard and the DSC alert is unacknowledged via DSC.
4. D A coast station DSC acknowledgment of the original Distress alert was received by your vessel.

Tip: press A-D to answer