Skill Level 1 Stands engine room and throttle watch while the vessel is underway. Stands anchor watch and ramp discharge watch during sea and anchor details and while the vessel is in port. Performs daily systems checks and posts all instrument and gage readings to the engineer log book. Positions fuel control racks and adjusts throttle controls to maximize engine efficiency. Inspects, troubleshoots, tests, services, adjusts, repairs, and replaces batteries, electrical system components, fuel system elements, propellers and propeller shafts, pumping assemblies and parts, and other marine engine equipment. Cleans, performs surface preparation, and paints engineer space equipment.

Skill Level 2 Provides supervision and technical expertise for subordinates performing their duties. Prepares marine vessel equipment for operation. Starts, operates, troubleshoots, and secures vessel engines. Inspects, services, adjusts, replaces, repairs, and overhauls engine components, throttle controls, accessory drives, boiler and piping systems, vessel steering mechanisms, electrical and wiring assemblies, cooling and lubrication systems, and vessel hulls for general upkeep. Computes fuel requirements and documents vessel fuel usage. Compiles and maintains the engine room records.

Skill Level 3 Supervises fire fighting, damage control, sanitation, and pollution control procedures aboard a vessel. Establishes and enforces engine department safety practices and supervises shipboard watches. Oversees, instructs, and provides technical advice in the maintenance of engines, electrical systems, cooling systems, lubrication systems, refrigeration systems, fuel systems, pneumatic systems, power and drive trains, steering systems, boilers and piping, hydraulics, and general vessel upkeep. Conducts crew or section drills and training. Prepares standard operating procedures (SOPs) for maintenance and organizes the work of the maintenance shop.

Skill Level 4 Instructs and supervises marine engine department personnel in all systems maintenance. Oversees posting of vessel log books, forms, and records. Assigns personnel to duty positions. Schedules equipment for calibration. Establishes maintenance priorities. Prepares and reviews shipyard specifications. Prepares marine vessel historical reports and records, preventive maintenance schedules and records, material readiness reports, equipment improvement recommendations, and unsatisfactory/faulty equipment reports. Records required and completed modifications.