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Maison Tests en ligne CES Tous types de navires MASTER / Ch-Officer Test Online and Answers for Marine Engineering and Navigation (CES v6.0)
Tests en ligne : Test Online and Answers for Marine Engineering and Navigation (CES v6.0)
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Le test comprend 80 questions aléatoires.
Total de questions sur ce sujet : 135
Total de questions sur ce sujet : 135
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What is the purpose of performing an inclining experiment or stability test?
To determine the maximum angle of heel, before a ship will capsize.
It is done to find out the GM of a vessel, place the ship’s lightweight and VCG and LCG at this lightweight.
There is no need for such an experiment, because the information it gives may be obtained in various other easy ways.
To test the safe working load of a derrick or crane.
The ship’s training manual must contain instructions and information on the life-saving appliances carried onboard. Which of these duties must be included?
Correct donning of life jackets.
Correct use of oars and sails for survival craft.
Correct donning of protective clothing.
Correct use of communication equipment.
How far from the coast is it permitted to use low-pressure evaporation to produce drinking water?
5 miles.
12 miles.
20 miles.
30 miles.
What shall you do if you see a person falling into the sea?
Put on a lifejacket.
Launch a lifeboat.
Throw a lifebuoy overboard and report to the bridge immediately.
Run aft.
A water content greater than 2 % is detected in a lubricating oil system. What is the best action to do?
Segregate the oil in a separate tank for continuous purifying.
Boil out the water by increasing the temperature.
Continuous purifying the system with the oil pumps running.
It is no danger, until the water level reach 6-8 %.
How many hand flares should each lifeboat normally carry?
10.
2.
6.
4.
How is a vacuum created in the fresh water generator?
By the differential temperature of fresh and sea water.
By pumping or educting out the brine.
By the condensing effect in the condenser.
By the vapour eductor driven by the ejector pump.
When cross-flooding arrangements to correct unsymmetrical flooding and excessive heel angles in damaged condition are installed in passenger ship’s, what is the maximum time allowed for equalization?
30 minutes.
15 minutes.
20 minutes.
10 minutes.
The condenser in a steam plant is where:
Steam is turned back into water.
Water is turned into steam.
Electricity is supplied.
Low pressure steam is produced.
Anyone of the crew who is assigned to watch duties in ports has a number of important tasks to carry out. Which one of the listed tasks has to be included in the watchman’s duties?
Checking the trim of the vessel.
Checking the number of persons entering/leaving the vessel.
Checking the moorings for tightness/slack.
Checking the safe and secure handling of cargo.
What is the result of a high metacentric height?
The vessel will roll violently.
The vessel will roll slowly or be unstable.
The vessel’s tween deck height is too high.
The vessel will have a great bending moment.
How often shall each member of the crew participate in an abandon ship drill?
Once every 6 months.
Once every week.
Once every month.
Once a year.
What is hypothermia and how is it cured?
Body temperature below 23 °C/Heat the body.
Heavy coughing/medication.
Body temperature below 39 °C/Heat the body.
Body temperature below 35 °C/Heat the body.
What is the “wave period”?
It is the time in minutes between successive wave crests, passing a fixed point.
It is the time in seconds between successive wave crests or troughs, passing a fixed point.
It is the time interval between the highest waves in a sequence of waves.
It is the comparison of the height of successive waves.
How can you minimize the squat effect?
Maintain your course and speed.
Increase speed if the ship is not already on full ahead.
Do a zig-zag manoeuvre to reduce speed.
Decrease the speed as much as practicable.
What activity will have the greatest fire fighting effect in case of a fire?
All fire fighting teams are organized as soon as possible.
Extinguishing attempt is started immediately.
Call the Chief Officer.
All possible fire fighting equipment is brought to the scene.
The passage of electrical current through the body may result in severe and sometimes fatal injuries. You are witness to a man getting electric current through his body and is stuck to the dangerous area. It is impossible to switch off the current by any main switch. How can you break the current safely?
Apply oil on your hands and cut the cords by the uyse of any metallic pliers.
Call the electrician immediately.
Stand on dry insulating material and pull the person away with insulating material.
Just take the casualty in your arms and pull the person away.
On the air compressor crankcase, there is a small valve that let’s off pressure. What should be done if oil is present with air?
Block off the valve.
Check the clearance in the bearing.
Overhaul the compressor unit.
Lower the sump oil level.
If mouth-to-mouth (M-T-M) ventilation by itself is unsuccessful and the casualty’s heart stops or has stopped beating, you must perform external chest compression (ECC) in conjunction with M-T-M. What is the complete rate when performing ECC?
Complete 25 compressions at the rate of 75 compressions per minute.
Complete 10 compressions at the rate of 40 compressions per minute.
Complete 15 compressions at the rate of 80 compressions per minute.
Complete 20 compressions at the rate of 60 compressions per minute.
In case of a fire inside the acetylene-line in the AC/OX gas welding equipment, what action is deemed necessary?
Close valves on acetylene bottle(s).
Close acetylene valve in the workshop.
Close the valves on both acetylene and the oxygen bottles.
Close oxygen valve.
How is bank effect felt in a vessel?
The vessel’s stern is pushed away from the nearest bank.
The vessel’s bow is pushed away from the nearest bank.
The whole vessel is drawn in parallel to the nearest bank.
The whole vessel is pushed away parallel to the nearest bank.
How is temperature controlled in a steam oil heater?
Steam inlet valve throttled.
Oil flow increased.
Steam outlet valve throttled.
Steam supply pressure reduced.
What is the effect on draft caused by a vessel heeling or listing?
There is no change in draft regardless of the extent of the list.
The draft is reduced by the amount the high side rises above the upright position.
The draft is increased by the difference between the high side draft and the low side draft.
The draft is increased by the difference in the heeled draft measured by a straight line in tangent with the keel, and the draft before heeling.
Does liquid turbulence improve the efficiency of a plate heat exchanger?
Makes no difference.
Turbulence is not possible in a plate heat exchanger.
No.
Yes.
What kind of safety protection is to be weared during a mooring operation?
Safety shoes and boiler suit.
No particular protection necessary.
Gloves and helmet.
Helmet, safety shoes, gloves and protecting cloths.
Name the two (2) different lubrication oil circuits of a steam turbine:
The thrust bearing and shaft circuit/the front and governor circuit.
The reduction gear oil/the turbine shaft bearing oil.
The bearing and gear oil circuit/the governor oil circuit.
The front bearing circuit/the rear bearing circuit.
The diagram shows loadline marks. How is the distance between S and T calculated?
One sixtieth of the summer draft.
One forty eighth of the summer draft.
Nine tenths of the FWA.
Four fifths of the FWA.
What is the minimum allowable value for GZ?
0,15 m.
0,2 m.
0,35 m.
0,42 m.
To get the best possible efficiency from refrigerator evaporators, the superheat should be regulated to:
5-10 °C.
0-1 °C.
40-50 °C.
25-30 °C.
Self-igniting lights on lifebuoys must either burn continuously or flash at a specified rate for a period of at least:
2 hours.
30 minutes.
1 hour.
90 minutes.
Which of the following statements regarding steam turbines is NOT true?
From the HP turbine, the steam then goes to the condenser.
The HP turbine is a faster rotating machine than a diesel engine.
The HP turbine is smaller than the LP turbine.
The HP turbine receives the steam before the LP turbine.
Superheated steam is steam:
That is mixed with water vapour.
That can be used for heating the accommodation.
That has been condensed.
That has been heated until it is “dry”.
How would you increase the KG of a ship, loaded with a timber cargo, that has become unstable?
By completely emptying all partly filled double bottom tanks.
By filling all wing ballast tanks.
By filing the small divided double bottom tanks on the lower side, while jettisoning the deck cargo from the higher side.
By jettisoning the entire deck cargo of timber.
What is item No. 9 shown in the diagram, fitted between evaporator and condenser of the fresh water generator?
A heating cap.
A water filter assembly.
A water deflector.
A desalinator unit.
What is the purpose of the control position on an enclosed lifeboat?
It is for sending out distress messages giving the ship’s last known position.
It’s a place reserved for injured persons.
It’s the position from which the boat is steered and the safety systems are operated.
It facilitates entering the names of all persons on-board. This is essential record keeping requirements.
Modern high pressure boilers produce which of the following?
Fresh water for drinking.
Superheated steam.
Feed water.
Saturated steam.
What is a “Rescue Sub-Centre” (RSC)?
A national search and rescue centre subordinate to an international search and rescue co-ordinating centre.
A unit subordinate to a rescue co-ordinating centre.
A centre for underwater search and rescue operation.
A centre established to assist the main national rescue centre.
Regarding feed water, which of the following statements is NOT true?
Feed water in HP boilers is normally pumped with a single stage centrifugal pump.
It is fresh water.
It is turned into steam in the boiler.
Steam turns to feed water in the condenser.
What is the centre of pressure?
It is the point where the total thrust of pressure could be considered to act.
It is the pressure at the centre of flotation.
It is the pressure in the centre of a specific tank.
It is the part that is least likely to give way to external pressure.
In the shown situation, the bow of your ship is pushed away from the bank. How can you handle this?
Give hard port rudder to get the ship back in the middle of the channel.
Give starboard rudder in order to balance the force of the bank effect and rudder effect.
Do nothing as the ship will handle itself.
Put your engine full astern to stop your ship.
Your vessel is to turn in a narrow canal by use of one tug (turn to port with the bow). In which position and how would you use the tug? Vessels engine will be used as well.
Make the tug fast aft for pulling.
Make the tug fast on starboard shoulder to push.
Make the tug fast in centre now fairlead for pulling.
Make the tug fast on port shoulder to pull.
The indications of a faulty refrigeration compressor valve are:
Continuous running.
Gradual or sudden decrease in capacity.
Low head pressure, high suction pressure.
Any of the alternatives.
You are to release the towing wire with forerunner. You have 3 men with you to do the work. How do you do it in a safe way?
With manpower. Two men picking up slack and one man lifts off the eye and let go simultaneously.
Use the winch. Forerunner and wire stopper to pick up the slack and stop the wire. One man operating each. Make the forerunner fast on the bit, releasing the eye of wire and the stopper, lower the wire easy by forerunner.
After heaving on the wire by a forerunner, cut the forerunner and so let the wire free.
The Disc type oil separator can usually separate water from oil when processing oils between which density ranges?
0,87 to 0,95.
0,845 to 0,965.
0,78 to 0,98.
0,84 to 0,945.
Unconscious casualties who are breathing and whose hearts are beating should be placed in the recovery position. Why is this position so important?
The recovery position makes it easy to maintain any kind of bleeding.
The position ensures that an open airway is maintained.
Because it keeps the heart beating.
The position prevents the patient from falling asleep.
Boiler feed water is water:
Used to cool steam back into water.
Taken from the condenser and fed back to the boiler.
Used to cool steam turbines.
Mixed with fuel oil and burnt as waste oil.
What is a pro-metacenter?
This expresses KM as moving away off the centreline at large angles of heel.
It is the ability of a vessel to return to an upright position.
It is the term used to indicate a vessel has a more than adequate GM.
It is just another name for metacentric height.
What is initial stability?
It is the stability status of the ship, when first delivered to owners from the shipyard.
It is the vessel’s GM, after completion of loading.
It is the stability of the vessel in her initial position, and is expressed by metacentric height.
It is the vessel’s GM, before commencement of loading.
What is the main advantage of plate heat exchangers?
Cheaper to install.
Easier to clean.
More efficient and take up less space.
Requires less maintenance.
What is statical stability?
It is the ability of a vessel to return to her initial or upright position, after having been forcibly inclined.
It is the basic stability information a vessel is required to carry by law.
It is the relationship between the moment of a couple and the righting lever.
It is another name for metacentric height.
What is the reason for the effect we call squat?
The bow and stern wave make the ship sink lower in the water.
Increased effect of gravity due to closeness of the sea bed.
Increased velocity and decreased water pressure around the ship’s hull.
Decreased velocity and increased water pressure around the ship’s hull.
If your vessel is tending to “synchronise”, what should you do to alter this condition?
You stop your ship and wait for the synchronizing to stop.
You should try to alter the wave period by altering course and by reducing speed.
You should put your ship’s beam on to the sea and increase speed.
You should increase your speed to full, whilst maintaining the same course.
If you have to carry out hot work close to a smoke detector in the engine room, what precautions should be taken?
Notify Deck officer in charge that a fire alarm may occur.
Notify master, deck officer and engineers in charge. The loop for this special senseor to be switched off and take normal precautions for hot work.
No special precautions except for having a watchman and a fire extinguisher available.
Disconnect the smoke detector.
What do the intersecting horizontal lines signify in the diagram?
The change in the centre of floatation, after trimming.
They show the actual angle of trim.
They only serve as a base for the two vertical lines.
The change of draft after trimming.
In a two stage compressor, you will find pistons with different diameters (one is bigger than the other). Which one of the following statement is correct?
A big piston will deliver dryer air into stage one.
The biggest diameter piston is the stage two piston.
The smallest diameter piston is the stage two piston.
A big piston will give less oil content in the air.
What is part No. 3?
Turbine coupling.
Turbine bearing.
Turbine drive gear train.
Turbine electromagnetic clutch.
What is the reason for too rising cooling water temperature at outlet of individual cylinders?
Compression pressure too low.
Cooling water spaces insufficiently vented.
Overload of the engine.
Fuel pressure of fuel booster pump too high.
What is prismatic co-efficient?
cm / cb.
Volume of displacement / (midship area × LBP). Also = cb / cm.
A co-efficient for a box shaped vessel only.
The same as block co-efficient.
Which alarm and shut-down device is fitted on the thrust bearing assembly?
The cooling water alarm.
The axial clearance alarm.
The steam pressure reducing alarm.
The low lub oil flow alarm.
What is the purpose of the sea water pump item No 13?
To cool the evaporator.
To drive the air ejector of the evaporator.
To supply sea water to the condenser.
To supply water to be evaporated.
What is meant by “synchronism or resonance”?
This is a dangerous condition that occurs when the ship’s still water period and the apparent wave period are equal.
This is stern used to describe pitching and rolling.
This is a term used to describe violent rolling.
This is a situation used to describe gentle rolling.
What is the BM for a box-shaped vessel in terms of breadth and draught?
Breadth cubed / 12 × draught.
Breadth squared / 12 × draught.
Breadth × draught / 10.
Breadth squared / 6.
If the fresh water generator is producing water with salinity of 5 ppm and is changed to produce water of 2 ppm, this is mainly achieved by:
Throttling sea water feed supply to the evaporator.
Decreasing sea water cooling to the condenser.
Slowing down production by opening the vacuum breaker valve.
Decreasing production by lowering fresh water supply from main engine.
What is the general emergency alarm signal to be sounded by the ship’s whistle and alarm bells in case of an emergency situation?
Seven short blasts followed by one prolonged blast.
Series of long blasts.
Only one long blast.
Series of short blasts.
A burn may occur when electricity of high current and voltage passes through the body. Most damage occurs at the points of entry and exit of electricity. What is the treatment for electrical burns?
Apply lotion and ointment to injured area and secure with a bandage.
Remove loose skin and apply oinment. Don’t secure with bandage.
Break blisters and secure with bandages.
Place sterile dressing over the burn and secure with a bandage.
Which of these requirements regarding lifebuoys corresponds to the SOLAS regulations?
It must have a mass greater than 2,5 kgs.
If fitted with light or smoke signal, it must have a mass less than 4 kgs.
It must have sufficient air.
It must be constructed of inherently buoyant material.
Who is the leader of the lifeboat drill (abandon ship drill)?
The first member of the crew arriving at the survival craft.
The appointed lifeboat commander.
Senior engine officer.
Senior deck officer.
What is a “Rescue Unit” (RU)?
A unit ready for search and rescue operations at sea any time of the day.
A unit specializing in search and rescue operations at sea.
A unit composed of trained personnel suitability equipped for expeditious search and rescue.
A permanently manned rescue vessel.
Why is the maximum pressure in a plate heat exchanger usually limited to about 10 bar?
Pump capacity.
All the above alternatives.
Possibility of rupturing the plates.
Difficult to seal plates above this pressure.
Water hammer is a short lasting pressure peak traveling along the pipe. How can it be avoided in a cooling water system?
Operate valves quickly.
Operate valves gradually.
Start pump with closed valves.
Start the system with open valves and empty pipes.
Turbo alternators perform which of the following tasks?
Supplying electricity on a motorship.
Supplying electricity on steamships when the main boiler is shut down.
Supplying electricity on steamships when the main boiler is operating.
Supplying electricity from diesel engines.
In which way make intake of poisonous material occur?
By inhalation.
All mentioned.
Swallowing.
Skin penetration and skin absorption.
The two main types of refrigeration system evaporators are called?
Finned and tube.
Wet and dry.
Short and extended.
Dry and flooded.
The vessel will anchor with pilot onboard. You are the duty officer on the bridge. What is your main duty?
Check the position only.
No duty when pilot is onboard.
Follow the master’s order.
Follow pilots order.
What is the required salinity of the fresh water produced as drinking water onboard?
Below 7 ppm.
Below 20 ppm.
Below 2 ppm.
Below 50 ppm.
How is a “turning couple” formed?
A couple is formed when two unequal forces in a vertical position are acting in the same direction.
Couple is formed when two equal parallel forces in a vertical position are acting in opposite direction.
A couple is formed by joining two vertical posts together.
A couple is formed when two unequal parallel forces are acting in the same direction.
How do you ensure reliable results from an inclining experiment?
No specific preparations are necessary and it can be done even in very windy conditions.
Perform test in calm conditions, with slack moorings, with minimum number of personnel and minimise free surface effects of liquids.
How will the ship behave if you have a black out in the situation sketched below?
The wind will not affect your ship whatsoever.
She will continue on course and the speed will slowly drop.
She will turn to starboard and the speed will slowly drop.
She will turn to port and the speed will drop gradually.
What does permeability mean?
To make a compartment water tight.
The process of making a compartment non-porus.
The relationship between the volume of a compartment and the volume available for water if bilged.
The flooding of the engine room compartment.
In a distress situation, how many times or for how long should the emergency alarm signal be sounded?
Until all crew members and passengers have reported to their respect muster stations.
3 minutes.
Until the signal “risk is over” or the order abandon ship is given.
3 times.
The current test includes Seagull CES questions on the topic of «Engineering and Navigation». These questions are intended to assess the competence of specialists in preventing accidents related to transport safety and can also be used for self-assessment.
- Version: 6.0.
- Test type: Detailed Test.
- Function area: Engine.
- Detailed subject: Emergency Equipment and Procedures (Engineering and Navigation), Auxillary Machinery (Engineering), Trim, Stability and Stress ( Navigation), Survival Craft, Rescue Craft (Engineering and Navigation), Main Propulsion, Turbine, Boilers (Engineering), Ship Manoeuvring, Handling (Navigation).
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19.03.2025
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