GMDSS Maintainer: Element 9

1. A It sends an alert to specific addresses via the Inmarsat-C terminal.
2. B It sends an all ships alert via the VHF-DSC unit.
3. C It sends an alert to the RCC via the Inmarsat-C terminal.
4. D It sends an all ships alert via MF-HF.

Tip: press A-D to answer