GMDSS: Element 7

1. A An emergency power source for radio communications is not required if a vessel has proper reserve power (batteries).
2. B A reserve power source is not required for radio communications.
3. C Only one of the above is required if a vessel is equipped with a second 406 EPIRB as a backup means of sending a Distress alert.
4. D All newly constructed ships under GMDSS must have both emergency and reserve power sources for radio communications.

Tip: press A-D to answer