Maintain and repair centrifugal pumps, air conditioning, hydraulic systems, JP-5 pumps and purifiers, Vertical Package Conveyors (VPCs), main drainage systems, capstan and towing systems, boat davits, galley and laundry equipment, and other mechanical and auxiliary equipment. Quantified specialized skills, such as trade qualifications or manufacturer training certifications for shipboard systems, equipment, and components, may substitute for up to two (2) years of technician experience for each major qualification or specialized trade skill.