As per SOLAS requirements, crew members must be fully trained in life-saving appliances (LSA) and firefighting equipment (FFE) as soon as possible, but not later than:

Answer & Explanation

The correct answer is Option C: 2 weeks after joining.

SOLAS Ch III Regulation 6 dictates that all crew members must receive instruction on the use of life-saving appliances and firefighting equipment. This training must be completed as soon as possible, but no later than two weeks after a crew member joins the vessel.