Fire protection regulations for towing vessels require training in all of the following, EXCEPT __________.

Correct Answer: Option A — refilling and servicing all expended fire extinguishing equipment

Towing vessel safety regulations mandate crew training in system operations, alarm activation, and personal protective equipment donning, but refilling and servicing of discharged fire extinguishers must be performed by certified shore-based technicians rather than shipboard personnel to ensure adherence to manufacturer and classification standards.