Explains principle of operation and names main components of electrical, electronic and control systems of various deck machinery equipment’s, deck cranes and cargo systems, explains principles of routine inspection, maintenance and repair of various deck machinery equipment’s, deck cranes and cargo systems, explains principles of routine inspection, maintenance of Reefer Containers. maintenance and repair of control and safety systems of Elevators, Galley Equipment, Laundry equipment, Hotel safety and alarm systems, Hotel lighting systems.