Must be able to understand and perform the basic set up, alignment, and operation of various portable tools and hand tools used in the trade as well as the ability to use such precision measuring instruments as height gauges, depth gauges, calipers, verniers, lay-out tools, tachometers, thermometers, vibration indicators and posses the ability to accurately record readings and measurements as well as complete documentation, repair, and testing of equipment. Must have the ability to interpret and work from basic blueprints, sketches and specifications, and have experience in the disassembly, repair, installation, testing and inspection of ship machinery such as, but not limited to, propelling machinery, pumps, valves, launchers, discharge machinery, ventilation equipment, steering gear, evaporators, heaters, condensers, propulsion plants, torpedo tubes, shutter doors, antennae mast mechanical groups.