OSV – Chief Engineer, Revision & Practice Exams

As it pertains to the luffing motion limits associated with an electro-hydraulic cargo-handling pedestal-type deck crane, what statement is true?

1. When the hoist block is raised to a maximum permissible height with respect to the boom, the luffing pump shall be placed on stroke and the luffing winch brake released.
2. When the hoist block is raised to a maximum permissible height with respect to the boom, the luffing pump shall be stroked to zero and the luffing winch brake set.
3. When the boom is raised to a maximum permissible height or lowered to a minimum permissible height, the luffing pump shall be stroked to zero and the luffing winch brake set. ✓
4. When the boom is raised to a maximum permissible height or lowered to a minimum permissible height, the luffing pump shall be placed on stroke and the luffing winch brake released.

After installing a new hydraulic pump in a system, what special attention should be given to the hydraulic system?

1. The filters and strainers should be checked frequently. ✓
2. All system pressure should be readjusted.
3. The relief valves in the system should be readjusted.
4. The system should be drained and renewed with a fluid of different operating characteristics.

A hydraulic system gear pump being fed from a reservoir frequently indicates signs of excessive pitting after two months of service. Which of the following would most likely contribute to this condition?

1. Abnormal pressurization is occurring in the reservoir.
2. Operating oil temperature is determined to be below normal.
3. A partial restriction in the return line has developed.
4. A vacuum condition has developed in the reservoir. ✓

Coast Guard regulations concerning marine sanitation devices may be found in __________.

1. 33 CFR Section 159 ✓
2. 33 CFR Section 153
3. 33 CFR Section 155
4. 33 CFR Section 156

When the helm angle position is changed, the series of corresponding events of the steering gear will include __________. I.rate of steering gear ram movement will be proportional to amount of helm angle input II.degree of tilting plate (box) angle will be proportional to the amount of helm angle input

1. I only
2. II only
3. Both I and II ✓
4. Neither I nor II

Which of the following shipboard groups would be an example of an informal group?

1. Those officers and crew assigned to the engineering department of a ship.
2. Those officers and crew assigned to a particular ship.
3. Those officers and crew assigned to a maintenance task on a ship. ✓
4. Those officers and crew assigned to the safety committee of a ship.

Of all the individual components of a pre-fire planning package, which component contains information about emergency duty station locations and responsibilities for each crew member by position AND name?

1. Station bill
2. Muster list ✓
3. Fire control plan
4. Pre-fire plan

What is the critical first step that must be carried out before executing a plan?

1. Assessing present and future conditions affecting achievement of the plan.
2. Identifying present and future conditions affecting achievement of the plan.
3. Developing a systematic approach to achievement of the plan.
4. Setting an objective or goal to be achieved by the plan. ✓

While a vessel is underway in periodically unmanned engine room status, the oily-water separator is undergoing extensive maintenance and repairs and will not be available for service for another 24 hours. With bilge holding tanks nearing capacity, as chief engineer you wish to be informed of when the oily-water separator is available for service. How would you best ensure that you will be so informed?

1. The request would be made of the duty engineer orally assuming that the word shall be passed on to his or her relief.
2. The request would be written as a note posted in the vicinity of the engineering department coffee mess.
3. The request would be written as a special instruction in the chief engineer's night order book. ✓
4. The request would be written as a note inserted into the chief engineer's standing order book.

In a compartment that has been completely flooded with water, the greatest pressure will be exerted __________.

1. along the top of the bulkhead
2. at a point that is one-third from the bottom of the bulkhead
3. along the bottom of any bulkhead ✓
4. at the vertical center of the bulkhead

Progressive flooding in the engine room may be minimized by securing watertight boundaries and _________.

1. pumping out flooded compartments ✓
2. dumping fuel oil
3. transferring reserve feedwater
4. evacuating the engine room

What is a major advantage of using a positive pressure type self-contained breathing apparatus?

1. Facial hair will not affect the mask performance.
2. The speed with which it can be put into operation is around 45 seconds. ✓
3. The equipment is lightweight and the wearer can work without difficulty in confined spaces.
4. The average operating time is over an hour.

Which of the following statements is true concerning an immersion suit and its use?

1. Only a light layer of clothing may be worn underneath.
2. They provide sufficient flotation to do away with the necessity of wearing a life jacket. ✓
3. They should be tight fitting.
4. A tear in the suit will not appreciably reduce its value.

A simple precaution to reduce the possibility of accidental fires in the paint locker, is to __________.

1. label the fixed firefighting system
2. store paint cans on metal shelves only
3. not allow oily rags to accumulate in the space ✓
4. place a portable fire extinguisher immediately outside the locker

Why is it essential to introduce CO2 from a fixed fire extinguishing system, into a large engine room, as quickly as possible?

1. The fire may warp the CO2 piping.
2. To keep the fire from spreading through the bulkheads.
3. Carbon dioxide takes a long time to disperse to all portions of a space.
4. Updraft from the fire tends to carry the CO2 away. ✓

Your ship has a low-pressure carbon dioxide system that covers the engine room. Fire has been reported in the engine room and the decision has been made to dump the carbon dioxide system into the engine room. While following the procedures to release carbon dioxide you find one engine room supply fan damper that will not close. How should you proceed?

1. Continue the release procedures and dump the carbon dioxide, after the release then try to seal the fan damper opening.
2. Cover the fan damper opening with a plastic tarp to stop the flow of air into the engine room and then continue with the release procedures. ✓
3. Cover the fan damper opening with burlap bags to slow the flow of air into the engine room and then continue with the release procedures.
4. Continue the release procedures and dump the carbon dioxide with the damper still open.

As first engineer you are the senior engineering officer in Emergency Squad #1. The fire alarm sounds and you report to the muster station where the bridge informs you smoke has been reported coming from the ship's laundry room. What should your first action be?

1. Start boundary cooling the area.
2. Help dress out other crew members in fireman's outfit.
3. Charge the ship's fire main.
4. Secure power and ventilation to the laundry room and inform the bridge once this is done. ✓

To properly use a clamp-on type ammeter to check current flow, what must be done FIRST?

1. short the test leads and calibrate the instrument to zero
2. de-energize the circuit to allow connection of the instrument in series
3. hook the jaws of the instrument around the insulated single conductor ✓
4. connect the voltage test leads to the appropriate terminals

An AC diesel-electric drive ship with synchronous propulsion motors has the capability for power factor correction. If the power factor associated with the main power distribution including all motors is 0.7 leading, what statement is true?

1. The synchronous propulsion motors are under-excited.
2. The synchronous propulsion motors are normally excited.
3. The synchronous propulsion motors are over-excited. ✓
4. The excitation status of the synchronous motor cannot be determined.

For the purposes of shipboard practice, voltages above what threshold would be considered high voltage?

1. 440 VAC
2. 1000 VAC ✓
3. 4160 VAC
4. 6600 VAC

When a high voltage system insulation test value is suspect or recorded during an annual survey, a polarization index test is performed. What is the polarization index?

1. The polarization index is the ratio of the insulation resistance taken at thirty minutes to the insulation resistance taken at one minute.
2. The polarization index is the ratio of the insulation resistance taken at ten minutes to the insulation resistance taken at one minute. ✓
3. The polarization index is the ratio of the insulation resistance taken at one minute to the insulation resistance taken at ten minutes.
4. The polarization index is the insulation resistance taken at ten minutes.

For troubleshooting purposes, the key indicator to the safety and general condition of high voltage circuitry is insulation resistance. For a 6.6 kV high voltage system, what would be the recommended minimum insulation resistance value?

1. 1 megohm
2. 5.6 megohms
3. 6.6 megohms
4. 7.6 megohms ✓

What would be considered the first line of defense in trying to prevent the build-up of dust on printed circuit boards associated with computer network devices?

1. Removal of access panels, followed by blowing out the equipment with compressed air.
2. Periodically flushing out the equipment enclosure with an approved solvent.
3. Removal of access panels, followed by vacuuming out the equipment with a vacuum cleaner.
4. Periodically cleaning or replacing any equipment enclosure air filters. ✓

Upon failure of the normal power supply, how is the emergency generator placed on the line to feed power to the emergency bus?

1. line connection feeder
2. automatic bus transfer device ✓
3. power failure alarm bus
4. main bus tie feeder

Before any work on electrical or electronic equipment is performed, which of the following precautions should be carried out?

1. Station a man at the circuit supply switch.
2. Secure and tag the supply circuit breaker in the open position. ✓
3. De-energize the applicable switchboard bus.
4. Bypass the interlocks.

What Ethernet cabling technology supports the greatest data transfer speeds?

1. Thick Ethernet
2. Gigabit Ethernet ✓
3. Fast Ethernet
4. Thin Ethernet

What is the maximum current allowed to be drawn from the secondary of a 2 kVA step-down transformer with a turns ratio of four to one if connected across a 440-volt line?

1. 1.1 amps
2. 4.5 amps
3. 18.1 amps ✓
4. 22.7 amps

When starting a deck winch drive engine in preparation for cargo handling operations, what parameter must be checked FIRST upon start-up to avoid immediate engine damage?

1. Fuel oil supply header pressure
2. Cylinder jacket water pump discharge pressure
3. Engine lubricating oil supply header pressure ✓
4. Deck winch gear oil pump discharge pressure

Various diesel engines onboard your offshore supply vessel are started by means of either vane-type or air- turbine air-starting motors. At a minimum, in the absence of automatic drain valves, how often should moisture separators be drained of moisture while the vessel is underway?

1. Hourly
2. Daily ✓
3. Weekly
4. Monthly

Concerning the diesel fuels used for the auxiliary and main propulsion diesel engines on-board the offshore supply vessel to which you are assigned, what fuel property is directly a measure of the ignition quality of the fuel?

1. Heating value
2. Cetane rating ✓
3. Density
4. Viscosity

The main propulsion diesel engines on your anchor-handling supply vessel are fitted with conventional hydraulically operated injector nozzles of the orifice type. When testing an injector by performing a pop-test on an injector test stand, you observe no leakage prior to reaching the popping pressure, the pressure holds at just below the popping pressure, the actual popping pressure is within specification, but the spray pattern is distorted. What maintenance is required?

1. The injector spring compression must be readjusted or a broken spring replaced.
2. The injector needle valve and seat must be reconditioned or replaced.
3. The injector nozzle tip orifices must be reconditioned by cleaning or the tip replaced. ✓
4. The injector spindle and nozzle holder bore must be reconditioned or replaced.

Water-jacketed exhaust manifolds as used on anchor-handling supply vessel main engines require periodic inspection of the jackets and scale removal as necessary. What would be the impact of a failure to remove scale deposits on a timely basis?

1. Excessive scale deposits would decrease heat transfer and lower the temperature of the inside wall of the exhaust manifold.
2. Excessive scale deposits would increase heat transfer and raise the temperature of the inside wall of the exhaust manifold.
3. Excessive scale deposits would increase heat transfer and lower the temperature of the inside wall of the exhaust manifold.
4. Excessive scale deposits would decrease heat transfer and raise the temperature of the inside wall of the exhaust manifold. ✓

The turbochargers on the main propulsion engines on the OSV to which you are assigned are fitted with an exhaust inlet screen to protect the turbocharger turbine. Upon inspection, pieces of broken piston rings or exhaust valves are found in the foreign object trap box. Besides removing this debris, with respect to the screen what should be done?

1. The screen should be magnafluxed to check for damage not visible to the naked eye. ✓
2. The screen should be replaced without conducting any further checking or investigation.
3. The screen should be placed in a press to remove any indentations from impingement.
4. The screen should be replaced only when damage is obvious to the naked eye.

Due to the questionable mineral content of fresh water taken on from shore as a source of make-up water for diesel engine closed, recirculating cooling water systems, besides chemical treatment and coolant testing, what is the best line of defense in minimizing cooling system problems?

1. Maintaining a tight system and promptly repairing leaks ✓
2. Maintaining cooling water temperatures at lower-than-normal values
3. Increasing the frequency of draining, flushing, and re-filling the system
4. Maintaining cooling water temperatures at higher-than-normal values

A main diesel engine on your platform supply vessel has experienced a safety shutdown due to excessive crankcase pressure. What is the appropriate response?

1. Immediately open the crankcase to make the necessary inspections to determine the cause of the high crankcase pressure safety shutdown.
2. Immediately restart the engine and monitor the crankcase pressure to verify the cause of the shutdown.
3. Allow the engine to cool off for two minutes, then restart and monitor the crankcase pressure to verify the cause of the shutdown.
4. Allow 2 hours for the engine to cool before opening the crankcase and determine and correct the cause of the trip before attempting to restart the engine. ✓

You are attempting to start a deck winch drive engine fitted with an electric cranking motor where the battery electrolyte is frozen. What should be done to facilitate starting?

1. The battery electrolyte should be allowed to thaw, and then the battery electrolyte should be diluted with distilled water as necessary before attempting to start the engine.
2. The engine should be started by means of jumper cables connected to another battery without any particular concern regarding the electrolyte being frozen.
3. The battery electrolyte should be thawed by means of a battery charger, and then the battery should be recharged as necessary before attempting to start the engine.
4. The battery electrolyte should be allowed to thaw, and then the battery should be recharged as necessary before attempting to start the engine. ✓

While warming up the main engines on your offshore utility vessel while tied up at your own pier, one of the main engines suddenly sounds the low lube oil pressure alarm. What is the appropriate initial response?

1. Immediately add make-up oil or service lube oil coolers, strainers, and filters, as appropriate.
2. Monitor closely oil pressures, temperatures, and levels while continuing to run the engine.
3. Immediately shutdown the engine, then investigate the cause for the low-pressure alarm. ✓
4. Reduce the load and speed on the engine and continue to monitor the oil pressure.