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Maintain complete records of engineering department activities, including machine operations.
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Perform general marine vessel maintenance or repair work, such as repairing leaks, finishing interiors, refueling, or maintaining decks.
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Maintain or repair engines, electric motors, pumps, winches, or other mechanical or electrical equipment, or assist other crew members with maintenance or repair duties.
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Order and receive engine room stores, such as oil or spare parts, maintain inventories, and record usage of supplies.
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Monitor and test operations of engines or other equipment so that malfunctions and their causes can be identified.
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Clean engine parts and keep engine rooms clean.
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Operate or maintain off-loading liquid pumps or valves.
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Install engine controls, propeller shafts, or propellers.
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Supervise marine engine technicians engaged in the maintenance or repair of mechanical or electrical marine vessels, and inspect their work to ensure that it is performed properly.
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Monitor engine, machinery, or equipment indicators when vessels are underway, and report abnormalities to appropriate shipboard staff.
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Start engines to propel ships, and regulate engines and power transmissions to control speeds of ships, according to directions from captains or bridge computers.
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Monitor the availability, use, or condition of lifesaving equipment or pollution preventatives to ensure that international regulations are followed.
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Act as a liaison between a ship's captain and shore personnel to ensure that schedules and budgets are maintained and that the ship is operated safely and efficiently.
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Record orders for changes in ship speed or direction, and note gauge readings or test data, such as revolutions per minute or voltage output, in engineering logs or bellbooks.
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Perform or participate in emergency drills, as required.
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Fabricate engine replacement parts, such as valves, stay rods, or bolts, using metalworking machinery.
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Maintain electrical power, heating, ventilation, refrigeration, water, or sewerage systems.