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家 在线测试 CES 所有类型的船舶 MASTER / Ch-Officer Test Online and Answers for Marine Engineering and Navigation (CES v6.0)
在线测试： Test Online and Answers for Marine Engineering and Navigation (CES v6.0)
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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： 135
有关此主题的总问题： 135
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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.
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.
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”.
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.
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.
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.
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 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 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.
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.
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 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.
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.
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.
Which of the equipment listed is not included in the fireman’s personal equipment? (SOLAS II-2/17.1.1).
Protective clothing.
Leather safety boots and gloves.
An axe.
An electric safety lamp.
What part in this diagram is the low pressure turbine?
2.
3.
1.
4.
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 also be included?
Correct method of release of survival craft from launching appliances.
Correct method for use of the on-board communication system.
Correct donning of fire protective clothing.
Correct use of oars in survival craft.
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.
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 many hand flares should each lifeboat normally carry?
10.
2.
6.
4.
What kind of shaft seals are used on this high pressure turbine?
Counterbalancing seals.
Labyrinth seals.
Vacuum seals.
Mechanical seals.
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.
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 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.
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.
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.
After obtaining permission from the duty deck officer, under what conditions would the process of soot blowing the boiler tubes be most beneficial?
When the boiler is firing on high rate.
When the boiler is standing idle.
When the boiler is firing on medium rate.
When the boiler is firing on low rate.
Which part in this diagram is the high pressure turbine?
1.
6.
4.
2.
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.
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.
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.
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.
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.
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.
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.
What can be used to reduce the effect of the state of sea-waves?
Fuel oil.
Foam.
Crude oil.
Vegetable/fish oil.
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.
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.
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.
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.
What is the minimum allowable value for GZ?
0,15 m.
0,2 m.
0,35 m.
0,42 m.
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.
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.
Which one of the listed fire extinguishing medium is most effective against an open oil fire?
Powder.
Gas.
Water.
Foam.
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.
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.
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.
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.
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.
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.
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.
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.
What formula do you use to determine the GM from an inclining experiment?
GM = KM by d by 1/2 length of plumbline divided by W by length of plumbline.
There is no formula. You simply measure the deflection of the plumbline with a tape measure.
GM = w by distance by length of plumbline divided by W by deflection of the plumbline.
GM = w by length of plumbline divided by W by deflection of the plumbline.
A receiver in a refrigeration system is used to:
Cool the hot gases.
Separate oil from the refrigerant.
Condense the refrigerant.
Store the refrigerant.
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.
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.
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 part No. 3?
Turbine coupling.
Turbine bearing.
Turbine drive gear train.
Turbine electromagnetic clutch.
Which of the following is a rotary compressor?
Diesel engine charge air compressor.
Emergency air compressor.
Starting air compressor.
Control air compressor.
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.
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.
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.
Modern high pressure boilers produce which of the following?
Fresh water for drinking.
Superheated steam.
Feed water.
Saturated steam.
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.
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.
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.
On a steamship at sea, electricity is supplied by:
Gas turbines.
Diesel engines.
The main engine.
Turbo alternators.
What is the minimum allowable value for GM?
0,15 m.
0,25 m.
0,45 m.
0,35 m.
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 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 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.
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.
You are about to pass another ship in a close situation. What can happen in this situation?
The two ships will be pushed toward the banks.
Your ship will not be affected in this situation.
The bow of your ship will be sucked towards the stern of the other ship.
Due to suction, the two ships will be sucked together.
Unconscious casualties who are brething and whose hearts are beating should be placed in the recovery position. What is the recovery position?
As shown in figure 3.
As shown in figure 2.
As shown in figure 1.
As shown in figure 4.
In the event of a fire situation, which of the following actions is the first to be taken?
Call the officer on duty.
Try to kill the fire immediately by use of fire extinguishers or other adequate appliances.
Check all nearby compartments for survivors.
Raise fire alarm.
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.
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.
Your vessel is to unmoor. Two tugs will assist at the unmooring. Which position and how do you want to use the tugs?
Make the tug fast aft for pulling.
Fast FWD and AFT in centre lead to pull the vessel out from the jetty and make it in position for voyage.
Make the tug fast in centre now fairlead for pulling.
Make fast on ship’s.
Which way does the steam pass through in the system?
From the low pressure turbine to the high pressure turbine.
From the supply valve to the high pressure turbine.
From the high pressure turbine to the low pressure turbine.
From the condenser to the low pressure turbine.
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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