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Головна Онлайн-тести CES Medium Speed 3rd-Eng/4rd-Eng Test online for seafarers working in Engine Room (Operational, Medium Speed) (CES v6.0)
Онлайн-тестування: Test online for seafarers working in Engine Room (Operational, Medium Speed) (CES v6.0)
Онлайн-тест
Опис
Відгуки
Тест складається із 80 випадкових питань.
Усього питань на цю тему: 120
Усього питань на цю тему: 120
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What is the correct understanding of the term “Lapse Rate” when used in Meteorology?
The rate of increase of the wind associated with a Tropical Revolving Storm.
The delay in temperature reduction associated with the wet bulb thermometer of a hygrometer.
The change in the temperature associated with the passing of the warm front of a frontal depression.
The change of the temperature in the atmosphere with height above sea level.
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.
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.
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.
During maintenance of a pneumatically operated, diaphragm actuated control valve the diaphragm is found to be split. Select, from the options given, a suitable material to use to make a temporary replacement if there is no spare diaphragm available.
Natural rubber sheet of approximately the same thickness and elasticity as the original diaphragm material.
Cotton reinforced rubber insertion sheet of smaller thickness but similar strength as the original diaphragm material.
Natural rubber sheet of greater thickness and lower elasticity as the original diaphragm material.
Cotton reinforced rubber insertion sheet of approximately the same thickness but less elasticity than the original diaphragm material.
An engine room rating is assisting the duty engineer during a period of UMS operation. After completing the tasks they have been busy with the engineer and rating leave the engine room which is returned to UMS mode. The rating realises that an oil tank filling valve has been left open. What action should be taken?
Inform the duty engineer immediately so that the engine room can be re-entered and the valve can be shut.
Inform another crewmember that he is going back into the engine room to close the valve.
Just leave the valve open as it is unsafe to enter the engine room alone. The high alarm will sound to notify the engineer when the tank is full.
Re-enter the engine room straight away and shut the valve.
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.
Why should boiler sootblowers normally only be operated in the correct sequence?
To ensure soot is cleared progressively from the bottom tubes to the top and toward the boiler uptakes.
To minimise loss of steam pressure.
So that the operator does not forget which sootblowers have been used.
To avoid excess stress in the boiler.
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 type of fire integrity must be provided for an engine control room?
C.
A 0.
A 60.
B 15.
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.
Water is the extinguishing agent which is the most widely employed and its action as an extinguishing agent is due to a combination of the following phenomena:
Smothering and inhibition.
Cooling, smothering and dispersion.
Smothering and dispersion.
Cooling, inhibition and dispersion.
The use of combustible material is restricted in the accommodation spaces in order to:
Reduce cost of construction.
Prevent occurrence of fire and explosion.
Contain and suppress fire and explosion in the compartment of origin.
Make the ship light.
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.
The normal carbon content of Crude Oil is in the range of:
83-87 %.
88-94 %.
62-73 %.
24-82 %.
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.
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.
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.
What is the correct name of the part highlighted in the sketch?
Cylinder lubricator.
Cylinder relief valve.
Fuel injector.
Cylinder air start valve.
Give the meaning of the following symbol:
CO2 battery.
Remote controlled fire pumps.
Foam release station.
International shore connection.
How much liferaft capacity should be provided on a conventional cargo ship of more than 85 meters in length?
100 % of the complement if it can be readily launched on either side of the ship. If it cannot be readily launched on either side, 100 % must be provided on each side.
50 % of the complement on each side of the ship.
75 % of the complement on each side of the ship.
25 % of the complement on each side of the ship.
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.
Give the meaning of the following symbol:
Child’s lifejacket.
Lifejacket.
Muster station for unaccompanied minors (UM).
Immersion suit.
The insulation resistance (IR) to earth of a new galley hot-plate is measured to be 30 Mohm. When three identical hot-plates on the same supply are tested together their combined IR will be:
30 Mohm.
3 Mohm.
90 Mohm.
10 Mohm.
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 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.
During an oil cargo discharging operation, the IG supply to the tanks fails. As an OOW you would:
Continue discharging with the cargo pumps running at minimum speed, and inform the engine room.
Slow down and relieve the vacuum by opening the tanks lids and inform the Chief Officer.
Activate the inert fans and blow fresh air into the cargo tanks, and inform the terminal authority.
Immediately stop the discharging and inform the Chief Officer.
The responsibility for safety and security rests with everybody on board the vessel. General house-keeping rules should be followed. Which of the listed rules is the most important?
Always use gloves when using grinding machines.
Keep tools within easy reach during work.
Keep your working area clean and tidy.
Do not carry lighters or matches when working outdoors.
What kind of extinguishing-remedy would you choose to put out an electrical fire?
Combination of powder and water.
Water.
Foam.
Dry extinguishing remedy.
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.
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.
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.
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.
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.
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.
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.
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 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.
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.
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 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.
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.
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.
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.
What is the “International shore connection” used for?
To connect the ship fire main to the shore lines.
To connect the cargo hoses to the shore.
To connect the bunker hoses to the shore.
To connect the ship fresh water hoses to the shore.
What is the correct name of the equipment shown in the sketch?
File.
Shaping machine.
Pedestal drill.
Chisel.
Shipboard Emergency Drills must be carried out at least (OPA-90):
Once a month.
Once every 6 months.
Once a week.
Once a year.
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.
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 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.
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.
The following information must be given on the SART:
The MMSI number sent.
The date of replacement of the hydrostatic release unit.
The name of the operator.
Date of replacement of the batteries.
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.
With reference to the efficiency of cargo pumps on oil tankers, the abbreviation NPSH stands for:
Net Pressure Suction Head.
Necessary Pumping Suction Hazard.
Nominal Pressure Suction Head.
Natural Pumping Standard Height.
Is there any special area where it is forbidden to pump out any sludge or oil residues?
There are 8 special area where it is forbidden to pump out any sludge or oil residues.
There are 9 special area where it is forbidden to pump out any sludge or oil residues.
There are 4 special area the Baltic, Mediterranean, Red sea and Black sea where it is forbidden to pump out any sludge or oil residues.
There isn’t any special area where it is forbidden to pump out any sludge or oil residues.
What is the main purpose for taking diesel engine crankshaft deflections?
To allow calculation of the load on each of the bearings.
To check for weardown of the bottom end bearings.
To check that the shafting is in a straight line.
To check for weardown of the main bearings.
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.
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.
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.
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.
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 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.
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.
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.
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.
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.
During cargo or bunker operations, oil response equipment is to be:
In its store room.
Used elsewhere in the ship.
Ready for immediate use.
In the cargo pump room.
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 signal, if any, is specified in SOLAS as the “Abandon ship” signal?
Six short blasts followed by one long blast.
The “Abandon ship” signal is not specified, only the general emergency alarm signal is stated.
Four long blasts.
Seven short blasts followed by one long blast.
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.
You have abandoned ship in a liferaft. In most cases, which of the following actions should you generally take?
Organise a lookout system. Join up with other survival craft if possible. Stream the sea anchor.
Organise a lookout system.
Join up with any other survival craft and stream the sea anchor.
Start paddling in the direction of the nearest land.
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 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.
What is the minimum number of channels required for the portable two-way VHF’s for survival craft?
Channels 6, 13 & 16.
Channels 16 & 12.
Channel 16 only.
Channels 6, 12 & 16.
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 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.
The small amounts of cargo found in the cargo tanks before loading is referred to as OBQ, which means:
OBQ (On Board Quantity).
OPB (Observed Preliminary Volume).
TSV (Total Surveyed Volume).
ROB (Remaining On Board).
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.
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.
What is the most suitable type of packing for a shaft gland of a pump used for seawater duties?
Lead covered hemp packing.
PTFE rope packing.
Mica impregnated cotton packing.
Greasy cotton packing.
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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