Perform work requiring the knowledge and application of basic elements of one or more trade(s). Work assignments range from simple to moderately complex. Assists in the day to day activities to ensure optimal performances, including but not limited to performing routine skilled building trades work, the maintenance of the electric power generator plant and related components, such as ATS (automatic transfer switch), main power distribution power  and able to operate marine vessels. Learn/understand principles, practices, concepts, methods, techniques, work procedures, fundamentals, etc. and its applicability to the various trade(s).