using tools, machines, equipment and engineering techniques to maintain and repair marine plant and equipment to operational standardsidentifying a defect or worn mechanical components or equipmentrepairing/replacing worn or faulty components or equipment, and modificationsrepairing or manufacturing parts using general application of workshop machines including lathes, milling and drilling machinesutilizing thermal heating, cutting and welding equipment.apply quality systems, maintain and overhaul mechanical equipmentperform fault finding diagnostics, use power tools and hand held operationsshut down and isolate machines and equipment, maintain and update components such as boiler tubes, perform precision mechanical measurements plan a complete activity.