026B D
 If your vessel has suffered a casualty severe enough to disable both ship's power and the GMDSS console RSE you should:
a) Use UHF Transceivers to contact other vessels.
b) Activate the EPIRB.
c) Make a "Mayday" call on Ch-16 using the Survival Craft Portable Transceiver. 
d) Answers b) and c) are both correct
