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Главная Онлайн-тесты CES Все типы судов MASTER / Ch-Officer Test Online and Answers for Marine Engineering and Navigation (CES v6.0)
Онлайн-тестирование: Test Online and Answers for Marine Engineering and Navigation (CES v6.0)
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Тест состоит из 80 случайных вопросов.
Всего вопросов по данной теме: 135
Всего вопросов по данной теме: 135
Вопрос 1 из 80
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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.
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.
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.
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.
What kind of steam is feeding the astern turbine fitted on the same rotor as the LP turbine?
Reduced superheated steam via a pressure reducer.
Regenerated steam via resuperheater.
Steam from the main steam manifold via manoeuvring stand.
Exhaust steam from the high pressure turbine.
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.
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.
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 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.
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.
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.
In which way make intake of poisonous material occur?
By inhalation.
All mentioned.
Swallowing.
Skin penetration and skin absorption.
What part in this diagram is the low pressure turbine?
2.
3.
1.
4.
What can be used to reduce the effect of the state of sea-waves?
Fuel oil.
Foam.
Crude oil.
Vegetable/fish oil.
High pressure steam turbines are:
Directly coupled to the propeller shaft.
Powered by feed water.
Larger than low pressure turbines.
Smaller than low pressure turbines.
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.
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.
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.
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 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.
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.
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.
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.
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”.
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.
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 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.
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.
Which one of the listed fire extinguishing medium is most effective against an open oil fire?
Powder.
Gas.
Water.
Foam.
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 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.
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.
What is part No. 3?
Turbine coupling.
Turbine bearing.
Turbine drive gear train.
Turbine electromagnetic clutch.
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.
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.
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 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.
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.
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.
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.
Your ship is going astern right-handed propeller as sketched below. How is the ship most likely to react?
The stern will fall off to starboard.
The ship will go straight astern.
The stern will back into the wind.
The bow will go to port.
How is temperature controlled in a steam oil heater?
Steam inlet valve throttled.
Oil flow increased.
Steam outlet valve throttled.
Steam supply pressure reduced.
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.
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.
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.
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.
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.
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.
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.
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.
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.
In a modern steam turbine steam is prevented from leaking along the shaft by:
The inlet nozzle.
A labyrinth seal.
The blading.
High temperature packing.
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.
Modern high pressure boilers produce which of the following?
Fresh water for drinking.
Superheated steam.
Feed water.
Saturated steam.
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.
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.
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.
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 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.
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.
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.
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.
What is the purpose of the corrugations on a plate heat exchanger?
All of the above.
To increase the surface area.
To increase turbulence in the liquid.
Stiffening on the thin metal sheet.
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 required salinity of the fresh water produced as drinking water onboard?
Below 7 ppm.
Below 20 ppm.
Below 2 ppm.
Below 50 ppm.
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.
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 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.
The two main types of refrigeration system evaporators are called?
Finned and tube.
Wet and dry.
Short and extended.
Dry and flooded.
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.
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.
Which part in this diagram is the high pressure turbine?
1.
6.
4.
2.
How many hand flares should each lifeboat normally carry?
10.
2.
6.
4.
How do you consider the indicated speed for berthing?
To be sufficient.
It is up to the pilot to decide.
Too fast.
Too slow.
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.
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.
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.
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 kind of shaft seals are used on this high pressure turbine?
Counterbalancing seals.
Labyrinth seals.
Vacuum seals.
Mechanical seals.
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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