The training in this topic provides the basic knowledge of maintenance and repair of the deck machinery electrical, electronic and control systems, with specific reference to mooring winches with manual and automatic control, windlasses with manual and automatic control, accommodation ladder winches, lifesaving boat winches, hatch cover winches, deck cranes, gantry cranes, reefer containers, liquefied and gas cargo-handling equipment, recognizing of hazardous area (gas, dust), types of explosion proof protection for electrical equipment, operation and maintenance of electrical equipment in hazardous area, IECEX versus ATEX or appropriate national standards, and certificate Ex (intrinsically safe).