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Home Online tests CES All types of vessels MASTER / Ch-Officer Test Online and Answers for Marine Engineering and Navigation (CES v6.0)
Online testing: Test Online and Answers for Marine Engineering and Navigation (CES v6.0)
1
Online test
Description
Reviews 1
The test consists of 80 random questions.
Total questions on this topic: 135
Total questions on this topic: 135
Question 1 from 80
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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.
An alarm signal consisting of seven short blasts followed by one prolonged blast is sounded by the ship’s whistle and alarm bells. What are you to do?
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.
Go to the fire station.
Go to your lifeboat station.
Which of the following is true when comparing plate type with shell and tube type heat exchangers?
Physically smaller for the same capacity.
All of the above.
The capacity can easily be changed.
Better sealing between liquids in shell and tube.
Where can you find out if you belong to the forward mooring gang or the aft mooring gang?
Posted on the notice board onboard.
Alarm instruction onboard.
Being distributed for each port.
Deck crew forward and engine crew aft.
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.
You are berthed with a steady offshore beam wind of 30 knots. This wind suddenly increases to 60 knots. When this happens, the force driving the vessel off-berth will be:
Quadrupled.
Quintupled.
Doubled.
Tripled.
What can be used to reduce the effect of the state of sea-waves?
Fuel oil.
Foam.
Crude oil.
Vegetable/fish oil.
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 effects does freeboard have on a vessel’s dynamical stability?
As freeboard increases, the range of stability also increases, and this in turn leads to a greater dynamical stability.
If freeboard is greater, then dynamical stability is correspondingly reduced.
It does not have any effect on dynamical stability.
Freeboard and dynamical stability are not related in any way.
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.
What is the absolutely main purpose of fighting a fire onboard?
Try to put out the fire.
To put out the fire.
Rescuing of life.
To limit the fire.
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.
Which one of the listed fire extinguishing medium is most effective against an open oil fire?
Powder.
Gas.
Water.
Foam.
What is the minimum allowable value for GM?
0,15 m.
0,25 m.
0,45 m.
0,35 m.
What is part number 1 called?
The drainage tank.
The service tank.
The setting tank.
The expansion tank.
Your ship is operating with a right handed propeller. Before coming astern, how should you apply the rudder?
As with No. 2.
As with No. 1.
As with No. 3.
I think the speed is too slow.
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.
What is the formula to calculate the volume of displacement?
L by B by d by cb.
L by Gm by KG.
B by Km by d by cb.
L by 1/2B by draft by freeboard.
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”.
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.
In a refrigeration system, a fluid that serves only as a heat carrier is called the:
Vaporizing refrigerant.
Condensing refrigerant.
Primary refrigerant.
Secondary refrigerant.
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 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.
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 is the critical time in a dry docking operation?
After the ship has taken to the blocks, and shores are being put in place.
When they start to empty the dry dock.
Just before the ship takes the blocks at the stern.
As the ship enters the dock gates, to ensure she is not moving too fast.
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.
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.
A receiver in a refrigeration system is used to:
Cool the hot gases.
Separate oil from the refrigerant.
Condense the refrigerant.
Store the refrigerant.
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.
On a steamship at sea, electricity is supplied by:
Gas turbines.
Diesel engines.
The main engine.
Turbo alternators.
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.
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 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 do you consider the indicated speed for berthing?
To be sufficient.
It is up to the pilot to decide.
Too fast.
Too slow.
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.
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 is the purpose of hunting hear when referring to a hydraulic steering system?
Limits the speed of the rudder movement.
Provides feedback to the pump control.
To control hydraulic motor swash plate movement.
To transmit hydraulic pressure.
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.
Which of the following statements regarding main boilers is NOT true?
At least two safety valves will be fitted.
The feed water need not be very pure.
The burners could be at the top firing down.
The superheated steam pressure could be as much as 60 bar.
The watertight integrity of a vessel must be intact, when:
In open waters only.
Can be relaxed in inshore waters.
Can be relaxed during spells of fine weather.
When manoeuvring.
You are underway on a power driven vessel in open water, when you see another power driven vessel approximately five miles straight ahead on an opposite course. What action do you take?
Try and call him on the VHF to decide on what action to take.
Make a bold alternation to starboard and pass on his port side.
Make a bold alteration to port and pass on his starboard side.
Stand on with caution as he will alter course.
You want to turn your vessel in a narrow canal by use of two tugs with same power. The wind varies in the range moderate/strong. Where/how will the tugs be used?
Pulling, made fast in the vessel.
One tug pushing, one tug pulling.
Pushing, made fast in the vessel.
Which position is the best to stop bleeding from the nose?
Sitting with your head down, holding the nose tightly.
Sitting on a chair, leaning forward with two fingers pressing the nose together.
Laying on the back, holding a wet cold towel on top of the nose.
Laying on the back, leaning the head as much as possible.
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.
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.
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.
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.
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.
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.
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.
What measures regarding ship stability should be taken in order to make a passenger ship’s able to withstand critical damage?
Maintain sufficient intact stability.
Damaged stability to be increased by weight redistribution.
Avoid overloading the ship.
Damaged stability to be increased by use of water ballast.
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.
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 minimum allowable value for GZ?
0,15 m.
0,2 m.
0,35 m.
0,42 m.
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.
What is the source of energy used to convert salt water into fresh water in the fresh water generator?
The vacuum and ejector pump.
The ejector pump and sea water pump combined.
The sea water pump supplying the evaporating water.
The waste heat from the main engine.
Modern high pressure boilers produce which of the following?
Fresh water for drinking.
Superheated steam.
Feed water.
Saturated steam.
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.
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.
What is part No. 3?
Turbine coupling.
Turbine bearing.
Turbine drive gear train.
Turbine electromagnetic clutch.
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.
What are “cross curves” of stability used for onboard a ship?
Giving the capacity of various holds or tanks.
Similar to a set of Bonjean curves.
Obtaining statical stability curves at known displacements.
Showing tank calibration values.
In which way make intake of poisonous material occur?
By inhalation.
All mentioned.
Swallowing.
Skin penetration and skin absorption.
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.
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.
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.
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.
What is the most dangerous overtaking situation shown on the sketches?
A large vessel overtaking a small vessel with big difference in speed between the two vessels.
A small vessel overtaking a large vessel with a little difference in speed between the two vessels.
A large vessel overtaking a small vessel with a little difference in speed between the two vessels.
A small vessel overtaking a large vessel with big difference in speed between the two vessels.
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.
The muster list shall show the duties assigned to the different members of the crew. Which of the given duties do not necessarily have to be included in the muster list?
Clearing escape routes.
Preparation and launching of survival crafts.
Manning of fire parties assigned to deal with fires.
Muster of passengers.
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 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.
When you join a new ship, how are you informed about safety rules, alarm instructions and your own duties in case of an emergency?
By muster lists exhibited in conspicuous places.
By oral instructions by the captain.
By folder distributed to each crew member.
By alarm instructions in all crew cabins.
Which of these requirements regarding the launching and recovery arrangements for rescue boats corresponds to the SOLAS regulations?
The release mechanism shall be of an automatic type approved by the flag state administration.
Launching shall be possible with a headway speed of up to 5 knots in heavy weather.
Rapid recovery shall be possible with the boat’s full complement of persons and equipment.
Serious tube leakage in the air ejector condenser assembly will cause:
Faulty steam pressure.
Fouled nozzles.
Clogged steam strainers.
Loss of vacuum.
What are “hydrostatic curves” used for in ship calculations?
For hydrostatic pressures on bulkheads.
Obtaining the shape of the body sections.
For pressure at various depths in oil fuel bunkers.
Mainly for trim calculations for predicting end draughts.
How is shallow water effect felt in a vessel?
The vessel has a tendency to turn to port (right turning propeller).
The vessel has a tendency to turn to starboard (left turning propeller).
The vessel becomes sluggish in responding to the rudder.
The vessel responds very quickly to the rudder.
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.
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.
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.
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
I hope give me a lot of knowledge
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