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家 在线测试 CES Medium Speed 3rd-Eng/4rd-Eng Test online for seafarers working in Engine Room (Operational, Medium Speed) (CES v6.0)
在线测试： Test online for seafarers working in Engine Room (Operational, Medium Speed) (CES v6.0)
在线测试
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该测试由 80 个随机问题组成。
有关此主题的总问题： 120
有关此主题的总问题： 120
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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.
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.
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.
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.
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.
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 is the correct name of the part highlighted in the sketch?
Cylinder lubricator.
Cylinder relief valve.
Fuel injector.
Cylinder air start valve.
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 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.
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.
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.
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.
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.
Personal protection equipment appropriate to the task should be worn during work in the engine room. Which of the tasks given in the options requires that safety goggles should always be worn?
When you are working with power tools or chemicals.
When you are filling in the engine room log book.
When you are welding.
When you are tidying up in the engine room workshop.
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.
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.
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.
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.
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.
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.
What type of fire integrity must be provided for an engine control room?
C.
A 0.
A 60.
B 15.
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.
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.
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.
An engine room rating notices that the guard on a running pump is hanging loose due to a missing bolt on the support bracket and it is catching the shaft coupling. What is the best action to take as a repair method?
Try and fit a new bolt while the pump is running to permanently fix the guard in place.
Inform the watchkeeper so that the pump can be stopped and a new bolt can be fitted to permanently fix the guard in place.
Fasten the guard back in place with a piece of rope with the pump running as a temporary repair.
Place a sheet of metal in front of the guard to deflect any parts that may fly off as a temporary repair.
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 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.
A detector that is activated by a rise of temperature is:
A thermic detector.
A detector of radiation.
A smoke detector.
An optic detector.
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 would be the most probable cause of high temperature readings for the bearings in a diesel engine?
Lubricating oil pressure too low.
Charge air pressure too low.
Jacket cooling water temperature too high.
Water in the fuel oil.
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.
What would be the most probable cause of the exhaust gas temperature from one cylinder of a diesel engine being lower than normal?
The opening pressure for the injection valve for the cylinder is set too high.
There is air in the fuel oil system.
The camshaft chain is too slack.
The intake filter for turbo charger is partly fouled.
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.
What is the emergency frequency of MF (Medium Frequency) radio?
2 617 Hz.
2 182 Hz.
1 616 Hz.
1 718 Hz.
How many rocket parachute flares are carried in each liferaft with SOLAS B pack?
6.
2.
12.
Nil.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 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.
Give the meaning of the following symbol:
CO2 battery.
Remote controlled fire pumps.
Foam release station.
International shore connection.
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.
The bones in the human body are connected to each other by:
Muscles.
Fibrous tissues.
Tendons.
Different type of joints.
The threads on the drain plug for the bronze end cover of a sea water cooled heat exchanger have been badly damaged during maintenance. There is no spare brass plug available. What is the best solution for repairing the heat exchanger?
Make a new brass plug on the lathe to fit the drain hole.
Use a steel plug with the same thread as the original to replace it.
Wrap the threats in thread tape and coat it with jointing compound before refitting it.
Hammer in a wooden tapered plug as a temporary repair.
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.
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.
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).
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.
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.
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.
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.
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.
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.
What kind of permits have to be obtained before starting hot work in tanks?
Hot work permit + Permit for entry.
Hot work permit.
Permit for entry.
Cold work permit.
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?
An inside vernier calliper.
A go/no go gauge.
An inside micrometer.
A set of feeler gauges.
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.
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.
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.
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.
Where does the excess steam discharge to when the boiler safety valves operate due to the boiler pressure being too high?
The auxiliary condenser.
The engine room bilges.
The atmosphere via the atmospheric line.
The main condenser.
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 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 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.
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.
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.
Which of the following answers would most appropriately describe shell plating damage to the vessel?
My vessel has sustained damage to shell plating below the waterline.
My vessel has sustained damage to shell plating below the waterline in way of No. 3 cargo hold, starboard side.
My vessel has sustained damage to shell plating in way of No. 3 cargo hold.
My vessel has sustained damage to shell plating above the waterline.
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.
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.
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.
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.
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.
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.
Which cleaning agents are suitable for use in machinery space when considering the effect on the function of the oily water separator?
Only non-emulsifying cleaning agents with self-splitting emulsifiers are suitable.
None should be used as all cleaning agents affect the function of an OWS.
Any kind of cleaning agent is suitable.
An emulsification type cleaning agent is suitable.
Give the meaning of the following symbol:
Child’s lifejacket.
Lifejacket.
Muster station for unaccompanied minors (UM).
Immersion suit.
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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