| What is the requirement for emergency and reserve power in GMDSS radio installations? |
| A) An emergency power source for radio communications is not required if a vessel has proper reserve power (batteries). |
| B) A reserve power source is not required for radio communications. |
| 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. |
| D) All newly constructed ships under GMDSS must have both emergency and reserve power sources for radio communications. |
