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Home Online tests CES Medium Speed 3rd-Eng/4rd-Eng Test online for seafarers working in Engine Room (Operational, Medium Speed) (CES v6.0)
Online testing: Test online for seafarers working in Engine Room (Operational, Medium Speed) (CES v6.0)
Online test
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The test consists of 80 random questions.
Total questions on this topic: 120
Total questions on this topic: 120
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During inspection of a high pressure fuel pump for a medium speed diesel engine it is observed that the upper leading edge and the lower helical edge of the pump plunger have suffered from erosion damage. Select the correct action to take to remedy this from the options given.
Renew only the plunger if the barrel appears undamaged.
Renew the plunger and barrel insert as a pair.
Smooth away the damaged area with a grinder and polishing stone and refit it.
Replace the complete pump with a new or reconditioned spare.
What is the best way to avoid pollution from small oil-spills aboard a ship?
Contain any oil-spill onboard the ship.
Rig an oil boom around the ship.
Have sawdust ready for use.
Have dispersing chemicals ready for use in case of oil-spill.
What would you do if you are told to operate a piece of mechanical equipment which you are not familiar with?
Seek advice from your superior before attempting to operate it.
Ensure that all safety guards and devices are disconnected.
Try and guess how the equipment should be operated.
Ignore the request to operate the equipment.
In a refrigeration system what is the most likely cause of the compressor suction pressure being too law and causing the compressor to short cycle?
System overcharged with refrigerant.
Insufficient cooling water flow through the condenser.
Expansion valve stuck open.
System undercharged with refrigerant.
What special equipment can often provide assistance in locating a survival craft or man overboard and in the water?
A RACON.
AIS.
A SART.
A sectored search pattern.
What do you understand by the order: “Move the pilot ladder to the other side”?
To shift the pilot ladder to the opposite side of the ship.
To move the pilot ladder further along nearer to the bow.
To change the position of the pilot ladder from the main deck to the fore deck.
To rig another pilot ladder.
What is the signal actuated by a fire detection system?
A visual and audible alarm signal at the control panel.
An audible signal at the control panel.
A visual signal at the control panel.
An audible and visual signal consisting in 7 short signals followed by a long one.
In carbon dioxide fire-fighting systems for use in machinery spaces the fixed piping system shall be such that:
85 % of the gas can be discharged into the space within 2 minutes.
100 % of the gas can be discharged into the space within 2 minutes.
100 % of the gas can be discharged into the space within 3 minutes.
70 % of the gas can be discharged into the space within 1 minute.
Which one of the listed requirements regarding the stowage of a survival craft corresponds to present SOLAS regulations? Each survival craft shall be stowed:
In a secure and sheltered position and protected from damage by fire or explosion.
Wherever space is available.
In a state of readiness so that two crew-members can prepare for embarkation and launching in less than 15 minutes.
On the starboard side of the ship.
What term is used to describe a fresh water cooling system which contains a seawater cooled common freshwater cooler and which meets the cooling requirements for all the engine room machinery?
A high temperature freshwater system.
A common cooling system.
A low temperature freshwater system.
A central cooling system.
While assisting the watchkeeper with routine cleaning of the fuel oil separator the watch rating is requested to clean the plate stack. Which of the options given is the preferred method for such a task?
Soak the dirty plates in a solvent for an hour and then stand them on the engine room deck to drain off.
Scrape the plates as clean as possible with a packing knife and then wash them with a high pressure water hose.
With the plate stack in position fill the purifier bowl with clean diesel oil and quickly switch it on and off to wash the plates.
Soak the plates in a suitable solvent until all of the dirt has loosened off and wipe clean with rags.
Where would you find out which fire sections are enclosed by “A” or “B” class divisions on a ship?
On the ship’s fire control plans.
On the general arrangement plan.
All the mentioned alternatives.
On the capacity plan.
What is the disadvantage of using chemicals on an oil-spill on the water?
The water gets a white colour, which makes it easy to detect the oil-spill.
It is difficult to apply chemicals if there is any wind.
The chemicals make it difficult to remove the oil from the water.
It is difficult to apply the chemicals if the oil drifts away from the ship’s side.
What is the capacity of the required portable fluid extinguishers?
Not more than 20 litres and not less than 12 litres.
Not more than 20 litres.
Not more than 13,5 litres and not less than 9 litres.
Not more than 10 litres.
What are the lists called that give the position and task during a lifeboat drill for all persons on board the ship?
The Crew List.
The Duty List.
The Drill List.
The Muster List.
What is the correct name of the equipment shown in the sketch?
File.
Shaping machine.
Pedestal drill.
Chisel.
What is the first thing that should be checked when taking over a boiler watch?
The boiler water level.
The boiler room bilge level.
The oil pressure to the burner.
The boiler exhaust gas colour.
What would be the effects of a ship passing into shallow waters?
The vessel has a tendency to swing to port with a single fixed-pitch right-hand turning propeller.
The speed is not affected, but more rudder is required to steer the ship.
There is no noticeable difference in performance of the ship.
The ship is less responsive to both rudder and propeller.
When shutting down the flue gas plant, the last step that the operator shall carry out would be to:
Close the deck isolating valve.
Open ventilation valve to atmosphere.
Close the gas pressure control valve.
Shut down of inert gas blower.
What is the emergency channel on VHF?
Channel 09.
Channel 16.
Channel 69.
Channel 21.
What are the lists called that give the position and task during a lifeboat drill for all persons on board the ship?
The Drill List.
The Duty List.
The Muster List.
The Crew List.
What term is used to describe a fresh water cooling system which contains a seawater cooled common freshwater cooler and which meets the cooling requirements for all the engine room machinery?
A high temperature freshwater system.
A common cooling system.
A central cooling system.
A low temperature freshwater system.
After checked for open airway, given the first two inflations and checked the pulse to make sure that the heart is beating, what is the rate of inflations given until natural breathing is restored?
12-16 times per minute.
10-12 times per minute.
25-27 times per minute.
Doesn’t matter how many times.
How many thermal protective aids are carried in each liferaft?
Nil.
10 % of the number of persons the liferaft is designed to carry, or two, whichever is more.
The number of persons the liferaft is permitted to accommodate.
6.
A small electric motor needs to be taken to the bottom plates for fitting to a domestic water pump. It is only just too heavy to be manually carried so is to be lowered using the engine room crane. Which of the options given would be a suitable strop to use for the operation?
Any certified strop which has a safe working load greater than the weight of the motor.
A wire strop which is rated for twice the required load but is out of certification.
Any piece of rope will do as the motor is only just too heavy to carry.
Any strop which looks big enough to carry the load.
Give the meaning of the following symbol:
CO2 battery.
Remote controlled fire pumps.
Foam release station.
International shore connection.
The purpose of having corrugations in the bulkheads of cargo tanks of an oil tanker is to:
Provide strength, but with clean and clear surfaces within the tank.
To assist in the drainage of the oil by funneling the oil to the suction well.
Reduce the effects of Free Surface within the vessel.
Provide additional resistance to shear forces and bending moments.
Which of the methods given in the options should be used to test a remote reading temperature gauge for the auxiliary boiler exhaust gas?
Check the resistance change in the sensor over a known temperature range against the resistance values in the product sheet.
Fit a spare temperature gauge and see if the reading are the same.
Place the sensor in a test tank of water fitted with a heater element and thermometer and check the temperature gauge at different temperatures.
Place the sensor in a test tank of oil fitted with a heater element and thermometer and check the temperature gauge at different temperatures.
What actions should the Officer of the Watch take when the ship’s steering gear fails?
All of the suggested answers.
Request the engine room to check the steering gear.
Call the Master and advise him of the situation.
Display the NUC signal and consider stopping the engines.
Welding and burning are two operations which give the highest risk of a fire on board ship. Which of the following safety precautions may be regarded as the most important in order to minimise this particular risk?
The area where the welding is to take place and adjacent spaces to be cleaned and all unnecessary materials and objects to be removed.
Only holders of a welding certificate should be allowed to carry out welding or burning on board ships.
Only use electrodes from a well known manufacturer.
Electric welding plants should be controlled by a responsible engineer before use.
With reference to the efficiency of cargo pumps on oil tankers, the abbreviation NPSH stands for:
Necessary Pumping Suction Hazard.
Natural Pumping Standard Height.
Nominal Pressure Suction Head.
Net Pressure Suction Head.
An engine room rating is assisting in the maintenance of some of the valves on the low pressure steam range. Which packing material, from the options given, would be the best choice for repacking the gland of a low pressure steam valve?
Graphite fibre packing.
PTFE rope packing.
Lead covered cotton packing.
Greasy cotton packing.
For how long should the self contained air support system on a totally enclosed lifeboat having its engine running be capable of providing safe and breathable air?
30 minutes.
20 minutes.
5 minutes.
10 minutes.
What should be the first action to be taken in the event of the water level disappearing out of the boiler water level gauge glass?
Close the main steam stop valve.
Secure all of the burners.
Call the chief engineer.
Close the feed water stop valve.
An important quantity which is useful in circuit analysis is known as conductance G (Siemens). Which of the formulas A to D expresses the conductance for this circuit?
G = 1/R.
G = 2R.
G = I/R.
G = R*V.
What will a cadet find in the maintenance manual?
A cadet will find a lubricating chart in the maintenance manual.
A cadet will find grease in the maintenance manual.
A cadet will find machinery spare parts in the maintenance manual.
A cadet will find grease nipples in the maintenance manual.
When operating a propulsion installation consisting of medium speed diesel engines driving a controllable pitch propeller it is possible to operate the combination of engine speed and propeller pitch in a number of different ways. What would be the main reason for operating with constant speed and variable pitch?
To allow the engine to be operated with a load sensing governor instead of a speed sensing governor.
To allow rapid load change and thrust reversal when manoeuvring.
To obtain maximum propeller efficiency over the load range of the engine.
To allow constant speed operation of a shaft generator while the engine load changes with pitch variation.
While getting tools ready and preparing for overhaul work on the main engine the engine room rating notices that the electrical extension is damaged. A small section of the cables outer insulation is split although the inner insulation appears ok. What action should the rating take?
Cut off the end of the cable including the damaged section and refit the plug to the end of the remaining cable before using the extension.
Label the damaged extension as unfit for use and return it to the store for testing and get a replacement extension.
Carry on using the extension after wrapping insulation tape over the damaged section as it is only minor damage.
Just use the extension as it is since the damage is only to the outer insulation and the inner insulation appears ok.
What is the first action that should be taken by the rating on boiler watch in the event of a flame failure on the boiler?
Call the engineer on watch.
Stop the feed water pump.
Notify the bridge.
Call the chief engineer.
As per international regulations, the minimum inert gas pressure required to be maintained in slop tanks if slops are retained on board is:
1 000 mm/water gauge.
100 mm/water gauge.
750 mm/water gauge.
10 mm/water gauge.
What is generally considered as the minimum safe time period before opening a crankcase door after the oil mist detector alarm has activated and the engine has been stopped?
After at least 20 minutes.
After at least 10 minutes.
After at least 5 minutes.
After at least 1 hour.
What method shall be used when hauling survivors out of the sea (state of survivors is critical)?
Using painter.
Using heaving line.
Using lifebuoy.
Using nets.
What action should be taken if it is noticed that there is a quantity of oil on the engine room tank top?
Start the fire pump and wash the oil into the bilges.
Open the overboard valve and start the bilge pump.
Apply foam to the tank top to minimise any risk of fire.
Notify the duty engineer and try and find the cause of the leakage so that it can be stopped and the oil cleaned up.
What could be the cause of a refrigeration compressor running continuously even though normal temperatures for the cold rooms have been reached?
Low-pressure cut-out is stuck in closed position.
The differential pressure switch for the lubricating oil pressure cut-out is stuck in the closed position.
High-pressure cut-out is stuck in open position.
Solenoid valve before the expansion valve stuck in closed position.
Hot work is to be carried out close to a smoke detector in the engine room. What precautions should be taken?
Notify Deck Officer and Engineer Officer in charge. The loop for the smoke detector should be isolated while work is done and normal precautions for hot work taken including permit to work.
Disconnect or cover up the smoke detector.
No special precautions except for having a watch man and a fire extinguisher available.
Notify Deck Officer in charge that a fire alarm may occur.
What is the most likely cause of black smoke at the boiler exhaust during normal operation of a steam boiler?
Too much combustion air.
Water in the fuel.
Insufficient combustion air.
Fuel oil temperature too high.
An alarm signal consisting of seven short blast followed by one prolonged blast is sounded by the ship’s whistle and alarm bells. What are you to do?
Go to your lifeboat station.
Go to your fire station.
Go to (or remain in) your cabin and await further orders.
Report on the bridge (deck crew) or engine room (engine crew) for further orders.
When cargo discharge reaches stripping levels on an oil tanker, it is necessary to reduce the inert gas pressure so as to:
Comply with the requirement of MARPOL Annex VI.
Avoid locking the cargo pump impeller.
Minimise blowback.
Avoid over-capacity in the IG generator.
What is the emergency frequency of MF (Medium Frequency) radio?
2 617 Hz.
2 182 Hz.
1 616 Hz.
1 718 Hz.
When shutting down the flue gas plant, the last step that the operator shall carry out would be to:
Shut down of inert gas blower.
Close the gas pressure control valve.
Close the deck isolating valve.
Open ventilation valve to atmosphere.
An engine room rating is assisting in the maintenance of some of the valves on the low pressure steam range. Which packing material, from the options given, would be the best choice for repacking the gland of a low pressure steam valve?
Graphite fibre packing.
PTFE rope packing.
Lead covered cotton packing.
Greasy cotton packing.
An engine room rating is given the task of retightening the flanges of a pipe that has been replaced in the engine room. Which of the following tightening procedures should be followed?
Gradually tighten all of the bolts working diagonally across and around the flange.
Start with the top bolt and fully tighten each in turn moving clockwise around the flange.
Start with the bottom bolt and partially tighten each bolt in turn working counter clockwise around the flange. Repeat to fully tighten.
Fully tighten each bolt in turn and work diagonally across and around the flanges.
What types of fire extinguishers shall be used in the engine room?
Fire extinguishers of the handy-size types only.
Fire extinguishers filled with fresh water only.
Fire extinguishers equipped for powder or CO2 only.
Any fire extinguisher with a weight of less than 100 lbs.
Unfortunately an insect has become lodged in the ear. How to remove the insect?
By using rubber vacuum pump and suck the foreign body out.
Hold one hand across your nose and blow hard. Since the nose-channel is closed, the air will escape through the ears instead. And so will the foreign body.
Gently flood the casualty’s ear with terpid water so that the insect will float out.
By using a Q-tip and carefully try to get the insect out.
High Voltage (HV) cables are smaller than low voltage cables for a given power rating. Why is this?
The HV cable carries a smaller current and therefore requires less copper.
The HV cable uses higher quality copper conductors and therefore requires them to be a smaller cross-sectional area.
The HV cable uses Aluminium conductors and therefore requires them to be a smaller cross-sectional area.
The HV cable has a thinner wall of special insulation material.
Which of these are indicators that an individual may be a drug smuggler?
The individual makes small local purchases.
The individual is disinterested in the ship’s cargo.
The individual wears bulky or out of season clothing.
The individual spends his or her free time hanging out with others.
During maintenance work in the engine room or on deck it is often necessary to work aloft (work at a height above the plates or the deck). When working aloft onboard the ship what is the most important safety precaution that should be taken?
Wear a safety harness securely attached to ship’s structure.
Wear a safety helmet and goggles.
Lash the bottom of the ladder to a fixed point.
Keep all the tools required for the work in a bucket.
The engine room rating has been assisting with ballast operations during a period of engine room watch duty. Ballast operations have stopped for a couple of hours while stores are being taken. What action should the rating take during this break in operations?
Just keep the pumps running and the valves for the ballast tanks open to save time when operations are restarted. The tanks will just overflow through the air vents.
Just stop the pumps and close the pump suction and discharge valves. Leave the valves for the ballast tanks open to save time later.
Shut the valves for the ballast tanks but keep the pumps running and discharging overboard to save time later.
Stop all of the ballast pumps and close all of the ballast valves as soon as operations are stopped. Ballast lines should always be closed except when they are being used.
What is flashpoint of an oil or liquefied gas?
The flashpoint is the mixture of oxygen and hydro carbons needed to have an oil or liquefied gas to burn.
The flashpoint for an oil or liquefied gas is the temperature at which it is possible to ignite the vapour above the liquid.
The flashpoint is the temperature the oil or liquefied gas need for self ignition.
The flashpoint is the temperature needed to have a oil or liquefied gas pumpable.
Shipboard Emergency Drills must be carried out at least (OPA-90):
Once a month.
Once every 6 months.
Once a week.
Once a year.
On a fire patrol at night you see smoke coming from a closed cabin door. What action should you take first?
Activate the nearest fire alarm button and advise bridge of the location of the fire.
Get the nearest fire extinguisher and then open the door to see what the situation is.
Take a look inside the cabin to see what the situation is.
As most people are sleeping, call a friend and ask him to assist in putting out the fire.
A seawater pipe is holed due to corrosion causing frequent bilge alarms. Which of the given temporary repair methods would be the preferred option to remedy the problem until the pipe can be replaced?
Cover the hole with rubber insertion held in place with a jubilee clip.
Cover all of the affected area with fibre glass tape and resin/fibre.
Wrap duct tape around the pipe in way of the hole.
Drive a steel taper pin into the hole to seal it.
Why is it important that the combustion chamber of a boiler is properly ventilated prior to ignition?
To avoid an explosion in case any oil vapours are present from oil leakage into the furnace.
To ensure that there is sufficient air for proper combustion.
To remove any deposits from the furnace wall.
To cool the surfaces of the boiler furnace in case they give premature ignition of the burner.
What measures should be taken when handling mail?
Open any mail that looks suspicious.
X-ray or scan parcels before opening them.
Wear rubber gloves and protective clothing when opening suspicious looking mail.
Tear open letters with your hands.
An airway should be used when:
The patient has stopped breathing.
The patient is unconscious.
The patient is breathing on his own but is doing so with great difficulty.
Patient has injury in the mouth.
The examples of Aromatic Hydrocarbons will include:
Benzene, Toluene and Xylene.
Hydrogen Sulphide and Carbon Monoxide.
Carbon Dioxide and Hydrogen Peroxide.
Propane, Butane and Pentane.
What do you call the method used for bone-soft part injuries?
ICE-method.
ABC-method.
REHAB-method.
First Aid-method.
The ship is involved in a collision, what is the immediate action by the Officer of the Watch after the incident has taken place?
Sound the General Alarm and stop engines.
Contact the other ship and send the bridge lookout down to start taking soundings.
Call the Master and check the position for any immediate dangers.
Stop engines and check over the side for any signs of pollution.
What kind of measure is the division of the vessel in upright areas by using thermic and structural separations?
It is both a prevention and protection measure.
It is a protection measure.
It is a prevention measure.
It is neither a prevention nor a protection measure.
What is meant by the term “segregation”?
The process of electronically transferring the data on cargoes loaded on a vessel between the load port and the discharge port, such that import documentation is prepared in advance of the vessel’s arrival.
The stowage of cargoes when calculated by a computerized load program.
The planned, separated stowage of cargoes that may react dangerously with each other in the event of leakage or other damage.
The planned adjacent stowage of packaged goods, thereby confining a listed hazard within the same area of the ship.
Which of the following areas may be possible restricted areas? Review all answers.
The Bridge.
The Cargo control room.
All alternatives.
The Engine control room.
Which of the options given is the main reason for using a ring spanner to tighten the brass nuts on the cover studs of a pump casing?
It can be adjusted to the exact size of the nut.
It will allow the nuts to be tightened correctly.
The nuts can be tightened more with this type of spanner.
It will minimise the risk of slipping off the nut or damaging the nuts.
What does the word “pyrotechnics” mean?
Pyrotechnics are the items which are capable of self-contained chemical reactions for the production heat, light, smoke and/or sound.
Pyrotechnics are items that are used to produce technical solutions to the complex problems.
Pyrotechnics are used to ensure that the correct technical proportions are used to start the system functioning.
Pyrotechnics is a group word to cover all the required activities in the event of a man overboard.
The purpose of the demister unit within the Inert Gas System is:
To remove sulphur oxides.
To cool the inert gas.
To prevent overheating.
To remove water from the IGS stream.
If the flow of gas to shore reaches the maximum declared capacity whilst using the Vapour Emission Control System (VECS), the OOW should:
Say nothing and hope notices, so that loading is completed as soon as possible.
Reset the lifting pressure level on the Pressure/Vacuum valves to allow them to release more vapour to atmosphere.
Open the mast riser vents to relieve the excess pressure and bring the flow within the declared range.
Request the terminal to reduce the loading rate until the flow of gas to shore is controlled.
The normal carbon content of Crude Oil is in the range of:
83-87 %.
88-94 %.
62-73 %.
24-82 %.
What is the main difference between a stuffing box gland and a mechanical seal on a centrifugal pump?
If packing fails the pump can be kept running by tightening the glands, but if a mechanical seal fails it must be renewed to stop the leakage.
The sealing surface of a mechanical seal is usually parallel to the shaft, but sealing surface of a packed gland is perpendicular to the shaft.
Packed stuffing box glands are subject to wear but mechanical seals are not.
Packed stuffing box glands must be cooled by liquid, but mechanical seals do not require any cooling.
A detector that is activated by a rise of temperature is:
A thermic detector.
A detector of radiation.
A smoke detector.
An optic detector.
An electric motor is to be aligned to a pump by insuring shims under the motor feet. Which of the tools given in the options would be used to check that the alignment is correct by measurement of the gap between the coupling faces?
A set of feeler gauges.
A go/no go gauge.
An inside micrometer.
An inside vernier calliper.
You are carrying out a search in a smoke filled compartment wearing a breathing apparatus. At what stage should you start to make your way out of the compartment?
Wait until the breathing apparatus warning whistle sounds.
15 minutes after starting to use the set as this leaves you with 5 minutes air left.
Wait for the appropriate signal on your safety line as the personnel outside will be keeping a track of the time you have spent inside.
Regularly check your pressure gauge and note how much air you used to reach your work area. Start to return when you have this amount left plus a reasonable reserve.
The current test includes Seagull CES questions on the topic of «Engine, Operational, Medium Speed». These questions are designed to verify the competence of specialists who are responsible for preventing accidents related to transport safety and can also be used for self-assessment.
The «Medium Speed» subject provides both theoretical and practical knowledge essential for advanced training on any type of vessel. Mastery of this information is a clear indicator of an employee’s competence in their role on board. A professional responsible for maintaining a medium-speed engine on a vessel has a range of crucial duties to ensure the ship’s safety and efficiency. This includes conducting regular technical maintenance, such as inspections, cleaning, replacing components, and lubricating bearings. Additionally, they monitor and adjust operational parameters like temperature, pressure, and fuel consumption to meet established standards, thereby ensuring optimal engine performance.
- Test type: STCW.
- Version: 5.2.7, 6.0.
- Department: Engine.
- Level: Operational.
- Propulsion: Medium Speed.
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