GMDSS: Element 7R

1. A Strobe light, Distress homing transmission on 406 MHz, float-free release bracket.
2. B Emergency transmission on 406 MHz, hydrostatic release, AIS homing frequency.
3. C Float-free release bracket, strobe light & Distress alert transmission on 406 MHz.
4. D Hydrostatic release, Distress alert transmission on 121.5 MHz, strobe light.

Tip: press A-D to answer