Must have the ability to interpret and work from complex 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. Possesses the ability to understand and perform the set-up, alignment, and operation of various portable tools and hand tools used in the trade as well as the ability to use all precision measuring instruments as height gauges, depth gauges, calipers, verniers, lay-out tools, tachometers, thermometers, vibration indicators.