- Remove and replace tank car dome caps, or direct other workers in their removal and replacement.
Occupations with related tasks Save Table: XLSX CSV
- Direct or coordinate crew members or workers performing activities such as loading or unloading cargo, steering vessels, operating engines, or operating, maintaining, or repairing ship equipment.
- Supervise crews in cleaning or maintaining decks, superstructures, or bridges.
- Prevent ships under navigational control from engaging in unsafe operations.
- Serve as a vessel's docking master upon arrival at a port or at a berth.
- Assign watches or living quarters to crew members.
- Direct courses and speeds of ships, based on specialized knowledge of local winds, weather, water depths, tides, currents, and hazards.
- Consult maps, charts, weather reports, or navigation equipment to determine and direct ship movements.
- Steer and operate vessels, using radios, depth finders, radars, lights, buoys, or lighthouses.
- Operate ship-to-shore radios to exchange information needed for ship operations.
- Dock or undock vessels, sometimes maneuvering through narrow spaces, such as locks.
- Stand watches on vessels during specified periods while vessels are under way.
- Inspect vessels to ensure efficient and safe operation of vessels and equipment and conformance to regulations.
- Read gauges to verify sufficient levels of hydraulic fluid, air pressure, or oxygen.
- Report to appropriate authorities any violations of federal or state pilotage laws.
- Provide assistance in maritime rescue operations.
- Signal passing vessels, using whistles, flashing lights, flags, or radios.
- Measure depths of water, using depth-measuring equipment.
- Signal crew members or deckhands to rig tow lines, open or close gates or ramps, or pull guard chains across entries.
- Maintain boats or equipment on board, such as engines, winches, navigational systems, fire extinguishers, or life preservers.
- Maintain records of daily activities, personnel reports, ship positions and movements, ports of call, weather and sea conditions, pollution control efforts, or cargo or passenger status.
- Advise ships' masters on harbor rules and customs procedures.
- Observe loading or unloading of cargo or equipment to ensure that handling and storage are performed according to specifications.
- Calculate sightings of land, using electronic sounding devices and following contour lines on charts.
- Learn to operate new technology systems and procedures through instruction, simulators, or models.
- Arrange for ships to be fueled, restocked with supplies, or repaired.
- Purchase supplies or equipment.
- Tow and maneuver barges or signal tugboats to tow barges to destinations.
- Perform various marine duties, such as checking for oil spills or other pollutants around ports or harbors or patrolling beaches.
- Interview and hire crew members.
- Conduct safety drills such as man overboard or fire drills.
- Direct or coordinate crew members or workers performing activities such as loading or unloading cargo, steering vessels, operating engines, or operating, maintaining, or repairing ship equipment.
- Supervise crews in cleaning or maintaining decks, superstructures, or bridges.
- Prevent ships under navigational control from engaging in unsafe operations.
- Serve as a vessel's docking master upon arrival at a port or at a berth.
- Assign watches or living quarters to crew members.
- Change water filters.
- Unload and assemble pipes and pumping equipment, using hand tools.
- Supervise oil pumpers and other workers engaged in producing oil from wells.
- Monitor pumps and flow lines for gas and fluid leaks.
- Gauge oil and gas production.
- Start compressor engines and divert oil from storage tanks into compressor units and auxiliary equipment to recover natural gas from oil.
- Monitor control panels during pumping operations to ensure that materials are being pumped at the correct pressure, density, rate, and concentration.
- Operate engines and pumps to shut off wells according to production schedules, and to switch flow of oil into storage tanks.
- Repair gas and oil meters and gauges.
- Perform routine maintenance on vehicles and equipment.
- Open valves to return compressed gas to bottoms of specified wells to repressurize them and force oil to surface.
- Prepare trucks and equipment necessary for the type of pumping service required.
- Attach pumps and hoses to wellheads.
- Mix acids, chemicals, or dry cement as required for a specific job.
- Drive trucks to transport high-pressure pumping equipment, and chemicals, fluids, or gases to be pumped into wells.
- Control pumping and blending equipment to acidize, cement, or fracture gas or oil wells and permeable rock formations.
- Change water filters.
- Unload and assemble pipes and pumping equipment, using hand tools.
- Supervise oil pumpers and other workers engaged in producing oil from wells.
- Install engine controls, propeller shafts, or propellers.
- 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.
- Start engines to propel ships, and regulate engines and power transmissions to control speeds of ships, according to directions from captains or bridge computers.
- Maintain or repair engines, electric motors, pumps, winches, or other mechanical or electrical equipment, or assist other crew members with maintenance or repair duties.
- Perform or participate in emergency drills, as required.
- Monitor engine, machinery, or equipment indicators when vessels are underway, and report abnormalities to appropriate shipboard staff.
- Maintain complete records of engineering department activities, including machine operations.
- Perform general marine vessel maintenance or repair work, such as repairing leaks, finishing interiors, refueling, or maintaining decks.
- Maintain electrical power, heating, ventilation, refrigeration, water, or sewerage systems.
- Monitor and test operations of engines or other equipment so that malfunctions and their causes can be identified.
- Monitor the availability, use, or condition of lifesaving equipment or pollution preventatives to ensure that international regulations are followed.
- 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.
- Clean engine parts and keep engine rooms clean.
- Operate or maintain off-loading liquid pumps or valves.
- Order and receive engine room stores, such as oil or spare parts, maintain inventories, and record usage of supplies.
- Fabricate engine replacement parts, such as valves, stay rods, or bolts, using metalworking machinery.
- 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.
- Install engine controls, propeller shafts, or propellers.
- 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.
- Disassemble and reassemble machines or equipment or remove and reattach vehicle parts or trim, using hand tools.
- Fit boot spoilers, side skirts, or mud flaps to cars.
- Rinse objects and place them on drying racks or use cloth, squeegees, or air compressors to dry surfaces.
- Apply paints, dyes, polishes, reconditioners, waxes, or masking materials to vehicles to preserve, protect, or restore color or condition.
- Clean and polish vehicle windows.
- Drive vehicles to or from workshops or customers' workplaces or homes.
- Scrub, scrape, or spray machine parts, equipment, or vehicles, using scrapers, brushes, clothes, cleaners, disinfectants, insecticides, acid, abrasives, vacuums, or hoses.
- Inspect parts, equipment, or vehicles for cleanliness, damage, and compliance with standards or regulations.
- Mix cleaning solutions, abrasive compositions, or other compounds, according to formulas.
- Maintain inventories of supplies.
- Pre-soak or rinse machine parts, equipment, or vehicles by immersing objects in cleaning solutions or water, manually or using hoists.
- Turn valves or disconnect hoses to eliminate water, cleaning solutions, or vapors from machinery or tanks.
- Turn valves or handles on equipment to regulate pressure or flow of water, air, steam, or abrasives from sprayer nozzles.
- Sweep, shovel, or vacuum loose debris or salvageable scrap into containers and remove containers from work areas.
- Monitor operation of cleaning machines and stop machines or notify supervisors when malfunctions occur.
- Press buttons to activate cleaning equipment or machines.
- Connect hoses or lines to pumps or other equipment.
- Collect and test samples of cleaning solutions or vapors.
- Clean the plastic work inside cars, using paintbrushes.
- Lubricate machinery, vehicles, or equipment or perform minor repairs or adjustments, using hand tools.
- Transport materials, equipment, or supplies to or from work areas, using carts or hoists.
- Disassemble and reassemble machines or equipment or remove and reattach vehicle parts or trim, using hand tools.
- Fit boot spoilers, side skirts, or mud flaps to cars.
- Move, assemble, and connect hoses or nozzles to material hoppers, storage tanks, conveyor sections or chutes, and pumps.
- Join sections of conveyor frames at temporary working areas, and connect power units.
- Inform supervisors of equipment malfunctions that need to be addressed.
- Observe conveyor operations and monitor lights, dials, and gauges to maintain specified operating levels and to detect equipment malfunctions.
- Record production data such as weights, types, quantities, and storage locations of materials, as well as equipment performance problems and downtime.
- Load, unload, or adjust materials or products on conveyors by hand, by using lifts, hoists, and scoops, or by opening gates, chutes, or hoppers.
- Stop equipment or machinery and clear jams, using poles, bars, and hand tools, or remove damaged materials from conveyors.
- Distribute materials, supplies, and equipment to work stations, using lifts and trucks.
- Observe packages moving along conveyors to identify packages, detect defective packaging, and perform quality control.
- Collect samples of materials or products, checking them to ensure conformance to specifications or sending them to laboratories for analysis.
- Position deflector bars, gates, chutes, or spouts to divert flow of materials from one conveyor onto another conveyor.
- Repair or replace equipment components or parts such as blades, rolls, and pumps.
- Manipulate controls, levers, and valves to start pumps, auxiliary equipment, or conveyors, and to adjust equipment positions, speeds, timing, and material flows.
- Weigh or measure materials and products, using scales or other measuring instruments, or read scales on conveyors that continually weigh products, to verify specified tonnages and prevent overloads.
- Read production and delivery schedules, and confer with supervisors, to determine sorting and transfer procedures, arrangement of packages on pallets, and destinations of loaded pallets.
- Operate consoles to control automatic palletizing equipment.
- Press console buttons to deflect packages to predetermined accumulators or reject lines.
- Clean, sterilize, and maintain equipment, machinery, and work stations, using hand tools, shovels, brooms, chemicals, hoses, and lubricants.
- Affix identifying information to materials or products, using hand tools.
- Thread strapping through strapping tools and secure battens with strapping to form protective pallets around extrusions.
- Contact workers in work stations or other departments to request movement of materials, products, or machinery, or to notify them of incoming shipments and their estimated delivery times.
- Measure dimensions of bundles, using rulers, and cut battens to required sizes, using power saws.
- Operate elevator systems in conjunction with conveyor systems.
- Move, assemble, and connect hoses or nozzles to material hoppers, storage tanks, conveyor sections or chutes, and pumps.
- Join sections of conveyor frames at temporary working areas, and connect power units.
- Supervise workers in the inspection and maintenance of mechanical equipment to ensure efficient and safe train operation.
- Direct and instruct workers engaged in yard activities, such as switching tracks, coupling and uncoupling cars, and routing inbound and outbound traffic.
- Direct engineers to move cars to fit planned train configurations, combining or separating cars to make up or break up trains.
- Supervise and coordinate crew activities to transport freight and passengers and to provide boarding, porter, maid, and meal services to passengers.
- Instruct workers to regulate air conditioning, lighting, and heating in passenger cars to ensure passengers' comfort.
- Signal engineers to begin train runs, stop trains, or change speed, using telecommunications equipment or hand signals.
- Confer with engineers regarding train routes, timetables, and cargoes, and to discuss alternative routes when there are rail defects or obstructions.
- Receive information regarding train or rail problems from dispatchers or from electronic monitoring devices.
- Receive instructions from dispatchers regarding trains' routes, timetables, and cargoes.
- Operate controls to activate track switches and traffic signals.
- Keep records of the contents and destination of each train car, and make sure that cars are added or removed at proper points on routes.
- Arrange for the removal of defective cars from trains at stations or stops.
- Inspect each car periodically during runs.
- Review schedules, switching orders, way bills, and shipping records to obtain cargo loading and unloading information and to plan work.
- Confirm routes and destination information for freight cars.
- Verify accuracy of timekeeping instruments with engineers to ensure trains depart on time.
- Document and prepare reports of accidents, unscheduled stops, or delays.
- Instruct workers to set warning signals in front and at rear of trains during emergency stops.
- Observe yard traffic to determine tracks available to accommodate inbound and outbound traffic.
- Record departure and arrival times, messages, tickets and revenue collected, and passenger accommodations and destinations.
- Inspect freight cars for compliance with sealing procedures, and record car numbers and seal numbers.
- Collect tickets, fares, or passes from passengers.
- Supervise workers in the inspection and maintenance of mechanical equipment to ensure efficient and safe train operation.
- Direct and instruct workers engaged in yard activities, such as switching tracks, coupling and uncoupling cars, and routing inbound and outbound traffic.
- Direct engineers to move cars to fit planned train configurations, combining or separating cars to make up or break up trains.
- Supervise and coordinate crew activities to transport freight and passengers and to provide boarding, porter, maid, and meal services to passengers.
- Instruct workers to regulate air conditioning, lighting, and heating in passenger cars to ensure passengers' comfort.
- Install motorcycle accessories.
- Reassemble frames and reinstall engines after repairs.
- Reassemble and test subassembly units.
- Mount, balance, change, or check condition or pressure of tires.
- Replace defective parts, using hand tools, arbor presses, flexible power presses, or power tools.
- Dismantle engines and repair or replace defective parts, such as magnetos, carburetors, or generators.
- Connect test panels to engines and measure generator output, ignition timing, or other engine performance indicators.
- Listen to engines, examine vehicle frames, or confer with customers to determine nature and extent of malfunction or damage.
- Repair or replace other parts, such as headlights, horns, handlebar controls, gasoline or oil tanks, starters, or mufflers.
- Disassemble subassembly units and examine condition, movement, or alignment of parts, visually or using gauges.
- Repair or adjust motorcycle subassemblies, such as forks, transmissions, brakes, or drive chains, according to specifications.
- Remove cylinder heads and grind valves to scrape off carbon and replace defective valves, pistons, cylinders, or rings, using hand and power tools.
- Hammer out dents and bends in frames and weld tears and breaks.
- Install motorcycle accessories.
- Reassemble frames and reinstall engines after repairs.
- Reassemble and test subassembly units.
- Inspect cables or grappling devices for wear and install or replace cables, as needed.
- Direct helpers engaged in placing blocking or outrigging under cranes.
- Determine load weights and check them against lifting capacities to prevent overload.
- Move levers, depress foot pedals, or turn dials to operate cranes, cherry pickers, electromagnets, or other moving equipment for lifting, moving, or placing loads.
- Inspect and adjust crane mechanisms or lifting accessories to prevent malfunctions or damage.
- Clean, lubricate, and maintain mechanisms such as cables, pulleys, or grappling devices, making repairs, as necessary.
- Load or unload bundles from trucks, or move containers to storage bins, using moving equipment.
- Review daily work or delivery schedules to determine orders, sequences of deliveries, or special loading instructions.
- Inspect bundle packaging for conformance to regulations or customer requirements, and remove and batch packaging tickets.
- Direct truck drivers backing vehicles into loading bays and cover, uncover, or secure loads for delivery.
- Weigh bundles, using floor scales, and record weights for company records.
- Inspect cables or grappling devices for wear and install or replace cables, as needed.
- Direct helpers engaged in placing blocking or outrigging under cranes.
- Install or remove special equipment, such as tire chains, grader blades, plow blades, or sanders.
- Give directions to laborers who are packing goods and moving them onto trailers.
- Check all load-related documentation for completeness and accuracy.
- Inspect loads to ensure that cargo is secure.
- Check vehicles to ensure that mechanical, safety, and emergency equipment is in good working order.
- Crank trailer landing gear up or down to safely secure vehicles.
- Obtain receipts or signatures for delivered goods and collect payment for services when required.
- Maintain logs of working hours or of vehicle service or repair status, following applicable state and federal regulations.
- Read bills of lading to determine assignment details.
- Report vehicle defects, accidents, traffic violations, or damage to the vehicles.
- Perform basic vehicle maintenance tasks, such as adding oil, fuel, or radiator fluid, performing minor repairs, or washing trucks.
- Couple or uncouple trailers by changing trailer jack positions, connecting or disconnecting air or electrical lines, or manipulating fifth-wheel locks.
- Maneuver trucks into loading or unloading positions, following signals from loading crew and checking that vehicle and loading equipment are properly positioned.
- Collect delivery instructions from appropriate sources, verifying instructions and routes.
- Drive trucks with capacities greater than 3 tons, including tractor-trailer combinations, to transport and deliver products, livestock, or other materials.
- Read and interpret maps to determine vehicle routes.
- Check conditions of trailers after contents have been unloaded to ensure that there has been no damage.
- Operate equipment, such as truck cab computers, CB radios, phones, or global positioning systems (GPS) equipment to exchange necessary information with bases, supervisors, or other drivers.
- Drive trucks to weigh stations before and after loading and along routes in compliance with state regulations.
- Load or unload trucks or help others with loading or unloading, using special loading-related equipment or other equipment as necessary.
- Plan or adjust routes based on changing conditions, using computer equipment, global positioning systems (GPS) equipment, or other navigation devices, to minimize fuel consumption and carbon emissions.
- Perform emergency roadside repairs, such as changing tires or installing light bulbs, tire chains, or spark plugs.
- Remove debris from loaded trailers.
- Secure cargo for transport, using ropes, blocks, chain, binders, or covers.
- Follow appropriate safety procedures for transporting dangerous goods.
- Inventory and inspect goods to be moved to determine quantities and conditions.
- Follow special cargo-related procedures, such as checking refrigeration systems for frozen foods or providing food or water for livestock.
- Wrap and secure goods using pads, packing paper, containers, or straps.
- Operate idle reduction systems or auxiliary power systems to generate power from alternative sources, such as fuel cells, to reduce idling time, to heat or cool truck cabins, or to provide power for other equipment.
- Operate trucks equipped with snowplows or sander attachments to maintain roads in winter weather.
- Drive electric or hybrid-electric powered trucks or alternative fuel-powered trucks to transport and deliver products, livestock, or other materials.
- Install or remove special equipment, such as tire chains, grader blades, plow blades, or sanders.
- Give directions to laborers who are packing goods and moving them onto trailers.
- Hook tow trucks to trailer hitches and fasten attachments, such as graders, plows, rollers, or winch cables to tractors, using hitchpins.
- Move levers or controls that operate lifting devices, such as forklifts, lift beams with swivel-hooks, hoists, or elevating platforms, to load, unload, transport, or stack material.
- Move controls to drive gasoline- or electric-powered trucks, cars, or tractors and transport materials between loading, processing, and storage areas.
- Manually or mechanically load or unload materials from pallets, skids, platforms, cars, lifting devices, or other transport vehicles.
- Position lifting devices under, over, or around loaded pallets, skids, or boxes and secure material or products for transport to designated areas.
- Inspect product load for accuracy and safely move it around the warehouse or facility to ensure timely and complete delivery.
- Signal workers to discharge, dump, or level materials.
- Weigh materials or products and record weight or other production data on tags or labels.
- Perform routine maintenance on vehicles or auxiliary equipment, such as cleaning, lubricating, recharging batteries, fueling, or replacing liquefied-gas tank.
- Operate or tend automatic stacking, loading, packaging, or cutting machines.
- Turn valves and open chutes to dump, spray, or release materials from dump cars or storage bins into hoppers.
- Hook tow trucks to trailer hitches and fasten attachments, such as graders, plows, rollers, or winch cables to tractors, using hitchpins.
- Respond to problems by adjusting control room equipment or instructing other personnel to adjust equipment at problem locations or in other control areas.
- Monitor meters and pressure gauges to determine consumption rate variations, temperatures, and pressures.
- Record instrument readings and operational changes in operating logs.
- Adjust valves and equipment to obtain specified performance.
- Move controls and turn valves to start compressor engines, pumps, and auxiliary equipment.
- Operate power-driven pumps that transfer liquids, semi-liquids, gases, or powdered materials.
- Submit daily reports on facility operations.
- Take samples of gases and conduct chemical tests to determine gas quality and sulfur or moisture content, or send samples to laboratories for analysis.
- Read gas meters, and maintain records of the amounts of gas received and dispensed from holders.
- Turn knobs or switches to regulate pressures.
- Clean, lubricate, and adjust equipment, and replace filters and gaskets, using hand tools.
- Maintain each station by performing general housekeeping duties such as painting, washing, and cleaning.
- Connect pipelines between pumps and containers that are being filled or emptied.
- Respond to problems by adjusting control room equipment or instructing other personnel to adjust equipment at problem locations or in other control areas.
- Sell and install accessories, such as batteries, windshield wiper blades, fan belts, bulbs, or headlamps.
- Collect cash payments from customers, and make change or charge purchases to customers' credit cards, providing customers with receipts.
- Check tire pressure and levels of fuel, motor oil, transmission, radiator, battery, or other fluids, adding air or fluids as required.
- Perform minor repairs, such as adjusting brakes, replacing spark plugs, or changing engine oil or filters.
- Clean parking areas, offices, restrooms, or equipment, and remove trash.
- Order stock, and price and shelve incoming goods.
- Grease and lubricate vehicles or specified units, such as springs, universal joints, or steering knuckles, using grease guns or spray lubricants.
- Rotate, test, and repair or replace tires.
- Prepare daily reports of fuel, oil, and accessory sales.
- Clean windshields.
- Activate fuel pumps and fill fuel tanks of vehicles with gasoline or diesel fuel to specified levels.
- Test and charge batteries.
- Maintain customer records and follow up periodically with telephone, mail, or personal reminders of services due.
- Provide customers with information about local roads or highways.
- Operate car washes.
- Sell and install accessories, such as batteries, windshield wiper blades, fan belts, bulbs, or headlamps.
- Raise levers to couple and uncouple cars for makeup and breakup of trains.
- Observe train signals along routes and verify their meanings for engineers.
- Signal locomotive engineers to start or stop trains when coupling or uncoupling cars, using hand signals, lanterns, or radio communication.
- Pull or push track switches to reroute cars.
- Observe signals from other crew members so that work activities can be coordinated.
- Monitor trains as they go around curves to detect dragging equipment and smoking journal boxes.
- Inspect couplings, air hoses, journal boxes, and handbrakes to ensure that they are securely fastened and functioning properly.
- Observe tracks from left sides of locomotives to detect obstructions on tracks.
- Operate locomotives in emergency situations.
- Climb ladders to tops of cars to set brakes.
- Receive oral or written instructions from yardmasters or yard conductors indicating track assignments and cars to be switched.
- Inspect locomotives to detect damaged or worn parts.
- Signal other workers to set brakes and to throw track switches when switching cars from trains to way stations.
- Check to see that trains are equipped with supplies such as fuel, water, and sand.
- Monitor oil, temperature, and pressure gauges on dashboards to determine if engines are operating safely and efficiently.
- Set flares, flags, lanterns, or torpedoes in front and at rear of trains during emergency stops to warn oncoming trains.
- Inspect tracks, cars, and engines for defects and to determine service needs, sending engines and cars for repairs as necessary.
- Start diesel engines to warm engines before runs.
- Make minor repairs to couplings, air hoses, and journal boxes, using hand tools.
- Connect air hoses to cars, using wrenches.
- Operate and drive locomotives, diesel switch engines, dinkey engines, flatcars, and railcars in train yards and at industrial sites.
- Refuel and lubricate engines.
- Ride atop cars that have been shunted, and turn handwheels to control speeds or stop cars at specified positions.
- Adjust controls to regulate air-conditioning, heating, and lighting on trains for comfort of passengers.
- Record numbers of cars available, numbers of cars sent to repair stations, and types of service needed.
- Provide passengers with assistance entering and exiting trains.
- Answer questions from passengers concerning train rules, stations, and timetable information.
- Conduct brake tests to determine the condition of brakes on trains.
- Raise levers to couple and uncouple cars for makeup and breakup of trains.
- Give directions to crew members engaged in cleaning wheelhouses or quarterdecks.
- Tie barges together into tow units for tugboats to handle, inspecting barges periodically during voyages and disconnecting them when destinations are reached.
- Attach hoses and operate pumps to transfer substances to and from liquid cargo tanks.
- Handle lines to moor vessels to wharfs, to tie up vessels to other vessels, or to rig towing lines.
- Read pressure and temperature gauges or displays and record data in engineering logs.
- Stand watch in ships' bows or bridge wings to look for obstructions in a ship's path or to locate navigational aids, such as buoys or lighthouses.
- Maintain government-issued certifications, as required.
- Examine machinery to verify specified pressures or lubricant flows.
- Maintain a ship's engines under the direction of the ship's engineering officers.
- Break out, rig, and stow cargo-handling gear, stationary rigging, or running gear.
- Lubricate machinery, equipment, or engine parts, such as gears, shafts, or bearings.
- Lower and man lifeboats when emergencies occur.
- Sweep, mop, and wash down decks to remove oil, dirt, and debris, using brooms, mops, brushes, and hoses.
- Splice and repair ropes, wire cables, or cordage, using marlinespikes, wire cutters, twine, and hand tools.
- Load or unload materials, vehicles, or passengers from vessels.
- Chip and clean rust spots on decks, superstructures, or sides of ships, using wire brushes and hand or air chipping machines.
- Provide engineers with assistance in repairing or adjusting machinery.
- Operate, maintain, or repair ship equipment, such as winches, cranes, derricks, or weapons system.
- Paint or varnish decks, superstructures, lifeboats, or sides of ships.
- Stand by wheels when ships are on automatic pilot, and verify accuracy of courses, using magnetic compasses.
- Steer ships under the direction of commanders or navigating officers or direct helmsmen to steer, following designated courses.
- Relay specified signals to other ships, using visual signaling devices, such as blinker lights or semaphores.
- Overhaul lifeboats or lifeboat gear and lower or raise lifeboats with winches or falls.
- Stand gangway watches to prevent unauthorized persons from boarding ships while in port.
- Record data in ships' logs, such as weather conditions or distances traveled.
- Measure depth of water in shallow or unfamiliar waters, using leadlines, and telephone or shout depth information to vessel bridges.
- Clean and polish wood trim, brass, or other metal parts.
- Participate in shore patrols.
- Give directions to crew members engaged in cleaning wheelhouses or quarterdecks.
