Must be able to work in, on, around, over and under fixed equipment and machinery; to work from lifts, ladders, and scaffolding; to manipulate heavy equipment, tools and supplies and/or exert 50 lbs. to concurrently manipulate multiple controls and machinery; to work in hazardous or irritating environments, confined spaces, and adverse weather or temperature conditions, to wear and work in personnel protective equipment. The ideal candidate will have a strong background in the maintenance, installation, and repair of HVAC and refrigeration systems aboard U.S. Navy, MSC, and Commercial vessels.