Welcome to the website where you can find answers for the CES test on the subject «Engine, Operational, Slow speed». This site will help you as a marine specialist improve your knowledge with the help of open information, where you can find questions as well as answers for them. CES based on practical information and marine specialists experience.
CES tests developed for evaluating seaman basic knowledge by Seagull Company (rebranded as «OTG»), is an evaluating online-tool, used for revealing any professional preparation needed in specific fields of knowledge, defined by STCW.
- Test type: STCW.
- Version: 6.0.0, 6.0.13.
- Department: Engine.
- Level: Operational.
- Engine: Slow speed.
CES tests have proven themselves as good tools for the selection and recruitment process, as well as advancing the level of knowledge of the current officers and crew. Ocean Technologies Group use various subjects for question creation, which includes:
- Crowd and Crisis Management;
- Integrated Navigation System (INS);
- Ballast water management;
- Handling and Stowage;
- Vessel operation management and safety;
- Marine engineering;
- Maintenance and repair, etc.
«Engine, Operational, Slow speed» subject includes theoretical and practical information about safety working with electrical equipment. Knowledge of this information directly shows employee’s competence who holds a relevant post on a vessel. A sailor working in the engine department on a ship is responsible for the maintenance and adjustment of engine mechanisms, cooling systems, fuel delivery, and other equipment. They are also tasked with monitoring the operation of all machinery, conducting regular technical inspections, and performing repair work as needed. When operating a low-speed control system (SU), the sailor is responsible for precise and safe vessel navigation in accordance with the captain’s instructions and navigational documentation.
This page contains answers to Seagull CES (Crew Evaluation System) test about Engine, Operational, Slow speed, and serve as a database of questions and answers, using which seafarer can prepare to exams for getting certificate of competence, or just to challenge yourself with knowledge in this theme.
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Amount of questions: 147.
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Code: JtqWmuCC How many separate means of escape are provided from each fire zone above the bulkhead deck?
At least two.
At least three.
At least ten.
One.
Code: oqacXQPn Before leaving the machinery spaces of a UMS vessel after routine watchkeeping rounds in the evening, the duty engineer inspects the doors to Fuel Oil Treatment rooms which are covered by a fixed fire fighting installation. For what purpose does he do this?
To make sure that they are properly closed with the self closing device so that any fire is contained and the extinguishing medium can be released without delay.
Wedge them open with an arrangement which allows them to be closed quickly in the event of a fire.
Remove the auto closing device so they remain in whatever position.
To tie them open with a rope to prevent the heat from building up inside, and making it uncomfortable to work.
Code: IXzkvh7p Why may wearing sweat rags slung round your neck when working in the machinery spaces be hazardous?
The rags may be caught by running machinery or power tools.
The rags may be soaked with oil and catch fire.
The rags may cause you to get too hot and faint.
The rags may cause sweat rash.
Code: awnysKSR On finding a person apparently unconscious in a High Voltage switch room, which of the following should be done?
Raise alarm, identify means of isolation and apply before approaching victim.
Raise alarm then drag the victim clear so that they cannot reach live parts while receiving aid.
Check if the victim is in contact with live parts and if not apply first aid.
Trip all breakers and approach victim.
Code: sl0OvDU1 You are witnessing someone about to faint. What are the symptoms?
The person may be very pale, and pulse is slow at first and weak.
Red face and big eyes.
The pulse is very fast and the person is getting cold.
The person starts to talk a lot and seems superactive.
Code: L592Bt9m What precautions should be taken, in addition to shutting the main air start valve if work is to be carried out inside the main diesel engine crankcase?
Engage the turning gear and put a notice at each engine control position.
Engage the turning gear, stop the starting air compressors and drain the air receivers.
Keep a man posted in the control room to stop anyone who tries to start the engine.
Engage the turning gear and close every valve on the starting air receivers.
Code: z6tvP#Kh Where would you find out which fire sections are enclosed by “A” or “B” class divisions on a ship?
On the Ship’s fire control plans.
On the capacity plan.
All the mentioned alternatives.
On the general arrangement plan.
Code: R2aILjUm What is the purpose of the ODME (Oil Discharge Monitoring Equipment) printer?
To prove that oil has been pumped overboard according to regulations.
To prove that the ODME system has been used.
To prove fault conditions in the ODME.
None of the mentioned.
Code: B$$VdGXL What is one of the main features of the cylinder lubricating oil used in large 2 stroke marine diesel engines which normally operate on heavy fuel oil?
It is strongly alkaline.
It is neutral with a pH value of 7.
It is a pure mineral oil without any special additives.
It is strongly acidic.
Code: JS8BHp46 Some large slow speed diesel engines have jack bolt arrangements for retaining the main bearing top keep in place rather than the more conventional stud bolts. How does this arrangement affect the maintenance and checking procedures for the tie rods on the engine?
The tie rods should be fully tensioned before the jacking bolts are loaded to avoid overload of the bearing caps and frame structure.
The jacking bolts should be fully loaded before the tie rods are tensioned to avoid excess loads on the tie rods.
It has no effect since the tie rods and jacking bolts have completely separate functions.
The tie rods and jacking bolts must be tightened simultaneously to avoid excess load on either component.
Code: CeCQYbj$ Modern slow speed, two stroke diesel engines often have locating pins or pegs to keep the piston rings in a fixed position. Why is this arrangement used?
It avoids the risk of the ends of the piston rings being forced out by the gas pressure and catching on the scavenge ports.
The piston ring gaps can be kept in line to control the gas pressure on each of the rings.
It ensures the rings cannot be mixed up and that they are fitted in the correct order on the piston.
The piston rings are more difficult to lubricate because of the slow operating speeds and will wear more quickly if they are allowed to rotate.
Code: ug3kini7 You are starting to get low on water in the lifeboat. What should you do?
Collect rain water.
Use sea water.
Mix sea water with 50 % fresh water.
Drink urine.
Code: qPtQ#YWY A ship moving through heavy seas is affected by the water presure at the bows causing an effect known as “Panting”. What structure in the forward region of the ship combats the effects of Panting?
Panting beams and stringers.
Collision bulkhead and deck.
Double bottom tanks and floors.
Centreline bulkhead.
Code: OsNUbn#Z Many large slow speed diesel engines operating on heavy fuel oil have a fuel injection system which features Variable Injection Timing. How does this affect engine operation?
VIT increases engine efficiency by automatically maintaining the maximum cylinder pressure over part of the load range.
VIT increases engine efficiency by automatically maintaining the maximum cylinder pressure over the entire load range.
VIT improves engine operation by automatically controlling the start of fuel injection when it detects a poor quality fuel.
VIT allows the ship’s engineers to alter the injection timing for each load setting with a simple single adjustment of the fuel rack.
Code: 0qLLFKQu For a Nitrite – Borate based cooling water treatment system, what would be considered to be the normal nitrite concentration limits for a correctly dosed system?
1 500 – 3 000 ppm Nitrite.
0 – 1 500 ppm Nitrite.
3 000 – 4 500 ppm Nitrite.
4 500 – 6 000 ppm Nitrite.
Code: 4oPknlvJ What acton is required if the crankcase relief valve on an air compressor is operating and emitting an air and oil mixture?
Overhaul the compressor unit.
Increase the lift pressure of the relief valve.
Increase the flow of cooling water to the compressor and intercooler.
Place a drip can beneath the valve to collect any escaping oil.
Code: Df4lmEh9 During maintenance of a pneumatically operated, diaphragm actuated control valve the diaphragm is found to be split. Select, from the options given, a suitable material to use to make a temporary replacement if there is no spare diaphragm available.
Natural rubber sheet of greater thickness and lower elasticity as the original diaphragm material.
Natural rubber sheet of approximately the same thickness and elasticity as the original diaphragm material.
Cotton reinforced rubber insertion sheet of smaller thickness but similar strength as the original diaphragm material.
Cotton reinforced rubber insertion sheet of approximately the same thickness but less elasticity than the original diaphragm material.
Code: xx9XCEWn For two generators running in parallel, their share of additional load (kW) will be determined by the:
Governor droop settings on each prime mover.
The power factor of the additional load.
The temperature difference between the generator rotors.
Voltage droop setting on each AVR.
Code: 315VQDBv The mandatory color of a hand flare is:
Red.
White.
Green.
Yellow.
Code: yZMbpcFo What is the most important task after carrying out any major overhaul on a diesel engine?
A thorough check inside the engine to make sure all tools and cleaning rags have been removed.
Start the engine to check the direction of rotation.
Start the auxiliary blower to ventilate the engine so that it has sufficient fresh air for starting.
Repair any damaged paint work on the engine.
Code: gtKODzAD For ideal synchronising as the incomer circuit breaker contacts make, the phase angle difference between the incomer e. m. f. and the busbar voltage should be:
0°.
30° ahead.
90° lag.
30° behind.
Code: kCF2LdxA Is it necessary to cool the samples taken from a diesel engine cooling water system before carrying out tests to determine the concentration of treatment chemicals?
Yes, the samples should be cooled to approximately 25 °C.
No, the samples should be heated to approximately 95 °C.
Yes, the samples should be cooled to approximately 50 °C.
No, the test should be carried out at system temperature.
Code: Wm689tAZ A seawater pump requires overhaul but there are no spare wear rings for the casing and impeller. It is decided that new wear rings will be fabricated onboard using the ship’s lathe. What would be the most suitable material to use to fabricate the rings onboard?
Aluminium brass.
Aluminium.
Zinc.
Mild steel.
Code: IEWvNC2U The correct time to synchronise is usually taken to be when the synchroscope reaches the “5 to 12” position and is rotating slowly clockwise. This to allow for:
Circuit breaker operating time.
Synchroscope error.
Generator phase difference error.
Synchroscope pointer time lag.
Code: Pm#1UGhV In a low pressure auxiliary boiler, what would be considered to be the maximum allowable chloride level of the boiler water?
300 PPM.
50 PPM.
600 PPM.
1 000 PPM.
Code: tKGR$txj What would be the correct form of response to the question: “What kind of assistance do you require?”
The correct form of response would be: “My vessel has a fire in the accommodation and we require fire-fighting assistance”.
The correct form of response would be: “There is a fire onboard my vessel”.
The correct form of response would be: “I need help as soon as possible”.
The correct form of response would be: “I need help on board with a fire and the smoke is very toxic”.
Code: clMiTvxm Select the option which best describes the primary duty of a watch-keeping engineer:
The primary duty of a watch-keeping engineer is to maintain constant surveillance of the main engine and auxiliary machinery.
The primary duty of a watch-keeping engineer is to maintain constant surveillance of the steering gear.
The primary duty of a watch-keeping engineer is to maintain the ship’s speed.
The primary duty of a watch-keeping engineer is to ensure that machinery spaces are properly manned.
Code: #OMY1vZj Which of the following instruments is normally part of a control-loop?
Gauge.
Plotter.
Transducer.
Indicator.
Code: M3sXX8Py A power card taken from a diesel engine cylinder using a mechanical indicator has a flat top. Which of the possible actions given in the options is most likely to correct this irregularity on the power card?
Change the indicator spring for one with a higher rating.
Shorten the cord for the indicator drum drive.
Lengthen the cord for the indicator drum drive.
Lubricate the indicator piston and cylinder.
Code: WiYU9pGw What could cause diesel engine lubricating oil to appear cloudy with a slightly “milky” colour?
Water contamination of the system.
Oxidation of the oil.
Fuel contamination of the system.
High temperature of the oil.
Code: fYhLrxf6 This device can detect a package of drugs inside a large delivery of ship’s stores. What is it?
Security container.
Pallet scanner.
Vapour detector.
Access control system.
Code: pprAGkZv In a purifier assuming the separating temperature is correct, what is the probable cause of the processed oil containing water?
The gravity disc is too small and/or the flow rate is too high.
The gravity is too large.
The back pressure at the clean oil outlet is too high.
The throughput is too low.
Code: swPkbGjq An air compressor is being refitted in the engine room. The compressor and motor are coupled using a flexible coupling and are mounted on a common “skid” which fixed to the deck with resilient mountings. Which of the statements, from the options given, relating to the alignment of the motor and compressor is true?
Shims should be fitted between the motor and compressor feet and the skid to ensure correct vertical, horizontal and parallel alignment of the coupling halves before it is bolted up.
Machines using flexible couplings and resilient mountings do not need to be aligned. That is why they have flexible and resilient elements fitted.
The compressor and motor can just be placed directly on the common skid as they will probably be closely aligned anyway.
As long as the two coupling halves are at the same height the flexible coupling will accommodate any horizontal misalingment of difference in the gap between the coupling faces.
Code: s$xj81Nr The two instruments necessary for generator synchonising are:
Voltmeter and synchroscope.
Amp-meter and volt-meter.
Synchroscope and kVar-meter.
kW meter and frequency meter.
Code: ??? On some large slow speed engines the crosshead guides are adjustable to allow the clearance between the crosshead shoes and the guides to be set equally. The normal arrangement is to have bolted on guide bars with shims fitted behind them. Which of the methods given in the options is the one normally used to ensure this is done correctly?
Turn the engine so that the piston skirt is at the bottom of the liner. Use wedges to centralise the piston. Measure the clearances along the length of each bar and shoe and fit shims to equalise the clearances.
Fit an equal number of shims behind each guide bar which should result in equal clearances between the guide bars and shoes along the whole length.
Turn the engine so that the piston for the cylinder concerned is at TDC and measure the clearance along the length of each bar and shoe and fit shims to equalise the clearances.
Turn the engine so that the piston for the cylinder concerned is at BDC and measure the clearance along the length of each bar and shoe and fit shims to equalise the clearances.
Code: N7kulibg A piston rod retaining nut needs to be tightened during maintenance on the main engine. Which of the given methods should be used to ensure it does not come loose in service?
Tighten it to the manufacturer’s recommendations using a torque wrench.
Tighten it 10 % more than the manufacturer’s recommendation using a torque wrench.
Tighten it as tight as possible using a spanner and extension pipe.
Tighten it as tight as possible using a flogging spanner and a hammer.
Code: P#bp3YRy What is the expansion ratio of the foam produced by the fixed low-expansion foam fire-extinguishing system of an engine room?
Less than 12 to 1.
Less than 20 to 1.
Less than 5 to 1.
Greater than 20 to 1 but less than 50 to 1.
Code: aPrv9Egc Which part of the crankshaft of a modern large two stroke diesel engine is most likely to be the origin point for crack initiation during service and therefore needs the greatest attention during maintenance inspection?
The fillet radii.
The keyways.
The oil holes.
The dowel pins and dowel holes.
Code: NhNpFuVA 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 list exhibited in conspicuous places.
By folder distributed to each crewmember.
By alarm instructions in all crew cabins.
By oral instructions by the Captain.
Code: dNB2u1jA A vapour compression refrigiration system is usually fitted with a number of devices to give protection and control of the system. Which of the methods given in the options should be used to test the high pressure cut out during routine maintenance and checking of the system?
Gradually shut in the condenser cooling water valve or the condenser refrigerant inlet valve while closely monitoring the compressor discharge pressure.
Charge the system with refrigerant until the high pressure cut out operates.
Manually close each of the evaporator coils by switching off the electrical supply to the liquid line solenoid shut off valves and monitor the condenser pressure.
Close the condenser outlet valve and closely monitor the condenser pressure.
Code: UsXja06a MARPOL – Annex V. Disposal of garbage outside “Special Areas”. After unpacking spares, you are left with a limited amount of packing materials. Is this prohibited, if not, what will be the nearest distance to land for disposal into the sea of these materials?
12 miles.
25 miles.
3 miles.
This is prohibited.
Code: $55AofQ1 During an unmanned period on a UMS vessel the “low water level” alarm for the jacket cooling water system expansion tank activities. What action would you take as duty engineer?
Answer the alarm, top up the tank and check the system for leakage before resuming unmanned operation.
Answer the alarm and adjust the alarm set point for the water level in the expansion tank before resuming unmanned operation.
Answer the alarm then block the alarm function for later action and resume unmanned operation.
Answer the alarm then block the alarm and change to manned engineroom condition.
Code: 4OU2PqkY Under which circumstances should a sprinkler head of a common fixed sprinkler fire-extinguishing system be activated?
Automatically, when the temperature is within a range from 68 °C to 79 °C.
Automatically, when the smoke density exceeds 12,5 % obscuration per meter.
When the temperature is within a range from 68 °C to 79 °C, but after the corresponding alarm is acknowledged and assessed at the control panel.
When the smoke density exceeds 12,5 % obscuration per minute, but after the corresponding alarm is acknowledged and assessed at the control panel.
Code: lk8OVwUX If a refrigeration system contains air, how would you remove it from the system?
Pump the system down to the condenser, continue cooling water flow until the condenser is at the same temperature as the cooling water and vent off the air from the top of the condenser.
Stop the compressor and vent the air from the crankcase.
Stop the compressor and undo a pipe coupling at the highest point in the system to vent off the air.
Pump the system down to the evaporator and keep the fan running until the evaporator is at ambient temperature and vent off the air from the top of the evaporator.
Code: $lxlBxr1 When a ships derrick or crane lifts a weight off the deck of a ship, from which position can the centre of gravity of the weight be considered to act?
From the head of the derrick or crane.
From the position on the deck from which the weight was lifted.
From a position on the deck at the base of the derrick or crane.
From the centre of the weight lifted.
Code: ITidn#$J The responsibility for safety and security rests with everybody on board the vessel. General house-keeping rules should be followed. Which of the listed rules is the most important?
Keep your working area clean and tidy.
Do not carry lighters or matches when working outdoors.
Keep tools within easy reach during work.
Always use gloves when using grinding machines.
Code: cQYUSIM0 Why is it important to check the timing of diesel engine cylinder oil lubricators?
To ensure cylinder lubricating oil enters the cylinders when the piston is in the required position.
To avoid excess pressure in the cylinder lubrication system.
To ensure the piston is not covering the lubrication points and blocking the flow of cylinder lubricating oil into the cylinder.
To ensure the correct amount of cylinder lubricating oil is fed into the cylinders.
Code: 8YWp5mnN 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 = R·V.
G = I/R.
Code: gmXWncZs What is generally considered as the minimum safe time period before opening a crankcase door after the oil mist detector alarm has activated and the engine has been stopped?
After at least 20 minutes.
After at least 10 minutes.
After at least 5 minutes.
After at least 1 hour.
Code: I2xVwcNf What cooling medium is normally used to cool the condenser of a fresh water generator?
Seawater.
Brine.
Distillate (freshwater).
Air.
Code: bewrCrUM Which of the following is not a principle of heat transfer utilised in an oil fired steam boiler?
Forced convection.
Radiation.
Conduction.
Natural convection.
Code: NQ7f2OnV Which ships does the ISM code apply to?
All passenger ships, all cargo ships of 500 GRT or above.
All craft above 300 GRT.
Only passenger vessels.
Only tankers and Ro-ros.
Code: LRIpOsCI An earth fault exists on the blue line of a 100 A bilge pump circuit. A second earth fault occurs on the yellow line of a 10 A ventilation fan circuit. Both systems are supplied from the ship’s 440 V supply. The likely outcome is that:
A short circuit occurs between earth faults and the ventilation fan fuse blows.
Both motors trip out on overload.
An open circuit occurs between earth fault and both motors trip out.
A short circuit occurs between earth fault and the bilge pump fuse blows.
Code: YwfcPjhv Personnel in a high voltage switchroom smell ozone. Which of the following is the likely cause?
Arcing at badly connected bus bars.
Air circuit breaker problems.
Transformer overload.
Vacuum circuit breaker problems.
Code: IzpvcahN With regard to radar, what would be a correct form of response to the question: “What range scale are you using?”
The correct form of response would be: “I am using the 12 mile range scale”.
The correct form of response would be: “I am using the 10 cm radar”.
The correct form of response would be: “I am using the largest range scale”.
The correct form of response would be: “I am using the 3 cm radar”.
Code: wGkqYy2x Vibration analysis is often used as a conditioning monitoring tool onboard ship as part of the approved planned maintenance system. Many vibration measuring instruments are fitted with a harmonic filter/analyser. How would these filters normally be used during vibration measurement on a centrifugal pump?
To isolate a single frequency of vibration associated with one of the pumps components.
To block out any noise or vibration from the surrounding engine room.
To sum up all the harmonics of a base frequency to give total vibration for all of the pump’s components simultaneously.
To generate an audible sound signal at the same frequency and amplitude as the vibration.
Code: 4ab6Usb1 The circuit consists of two inductors, L(1) = 6 H and L(2) = 12 H, connected in parallel. Calculate the equivalent L(S) of the two inductors.
L(S) = 4 H.
L(S) = 1,5 H.
L(S) = 18 H.
L(S) = 0,667 H.
Code: sJYESZoV Which diagram is the symbol for a THYRISTOR?
Figure 2.
Figure 1.
Figure 3.
Figure 4.
Code: vKYaqbSW During maintenance work on a compensated mechanical hydraulic governor air is drawn in to the hydraulic circuit after draining and flushing out the unit. Which of the actions given in the options is most likely to assist in the removal of the air from the system?
With the governor in operation open the compensation needle valve to introduce instability and disturb the engine load to make the governor hunt.
Drain the governor again and slowly refill with fresh oil.
Overfill the governor with fresh oil to force all of the air out.
With the governor in operation close the compensation needle valve and disturb the load to make the engine hunt.
Code: JZ$v$yBu While alongside at a repair berth a new section of seawater pipe has been fabricated in a shoreside workshop from drawings supplied by the vessel. During fitting of the pipe by ship’s engineers it is noted that the pipe is too short leaving a gap of about 8 mm between the flange faces. What action should be taken to remedy this problem?
The pipe should be returned to the shoreside workshop for modification or to be remade to the correct dimensions.
The ships engineer’s should use extra long bolts and pull the flanges together.
The ship’s engineers should fit extra thick joints between the flanges to fill the gap.
The ship’s engineers should manufacture a spacer piece to fit the gap.
Code: Vk5hu1iE What is the main reason for keeping engine lubricating oil viscosity within recommended limits?
To ensure the strength of the oil film is sufficient to keep lubricated surfaces apart.
To reduce system pressure losses.
To neutralise any acids that may form.
It is not important.
Code: 9BsBvKdn What does the term “Dead Ship” mean?
“Dead Ship” means that the machinery and boilers are inoperational due to lack of electrical power.
“Dead Ship” means that the ship is aground.
“Dead Ship” means that the ship cannot make way through the water.
“Dead Ship” means that auxiliary machinery is not operational.
Code: SfRjeCpL Give the meaning of the following symbol:
Start engine.
Start water spray.
Reverse engine.
Indicates manual starting direction of the engine.
Code: GTFC1rSr What is likely to be the cause of black smoke from a diesel engine exhaust seen at the funnel?
Incomplete combustion of the fuel.
Engine is burning some lubricating oil.
Water in the fuel.
Too much combustion air.
Code: CAeKvedS Which of the following alternatives summarise the benefits of using high voltage on ships?
Smaller conductors, machines and switchgear.
Smaller conductors, insulators and transformers.
More efficient transformers and electrical machines.
Smaller cables and better power factors.
Code: wxEWoJh2 A mechanical seal, consisting of carbon and ceramic seal rings, is to be fitted to a centrifugal pump shaft. What is the most likely result of not being extremely carefull when fitting this type of seal?
The seal rings are brittle and can be easily chipped or damaged.
The seal rings are hard and may score the pump shaft.
The rubber O rings for the seal can be easily damaged.
The spring and bellows for the seal can be easily damaged.
Code: vs8LUpnH During a bomb search, which of the following is an important principle to follow?
Do not touch any suspicious packages.
Know exactly what a bomb looks like.
Try to reach behind bulkheads to find a bomb.
Throw any suspicious items overboard.
Code: d0EtZoj0 How many Radar Transponders (SART) are required to be carried onboard a ship for use in survival crafts?
2, one of which being capable of floating free if the ship sinks.
One in each lifeboat.
One on each side of the ship.
Two on each side of the ship.
Code: RdFS1loT What type of component does this graphical symbol illustrate?
Pressure-reducing regulator.
Flow controller.
Pressure switch.
Pressure relief valve.
Code: FBrJ#pcS With two alternators running in parallel, and one is to be disconnected. The first step is to:
Remove the load from the alternator to be stopped.
Make sure the load is evenly shared.
Trip the main circuit breaker.
Increase the frequency on the switchboard.
Code: 270k5sM4 Which muscle is the most persevering one in the body?
The heart.
The liver.
The lungs.
None of the mentioned.
Code: YvVEBZYh What is the period of validity of the Safety Management Certificate?
5 years.
6 months.
1 year.
2 years.
Code: 64IQcx9U During maintenance of a piston rod stuffing box on a large, slow speed diesel engine it is usual to measure the butt gaps between the sealing ring and scrapper ring segments. What would be the effect of these gaps being too small?
If the gaps are too small they could close due to the radial wear of the rings before the next scheduled overhaul preventing the rings from contacting the piston rod and sealing it.
If the gaps were too small then no oil could pass up the piston rod to lubricate the sealing rings.
If the gaps are too small then the flow of scavenge air through the gland would be reduced and the gland would overheat.
If the gaps are too small the rings could scope the piston rod.
Code: zVkaR4Vd A ship has a medium speed engine and a controllable pitch propeller propulsion system. What would the propeller pitch normally have to be at to allow starting of the engine?
Zero.
10 % ahead.
25 % ahead.
25 % astern.
Code: Wf5AiDiR When a fire breaks out in the accommodation, cargo holds or on deck, who is in charge of the fire fighting operations?
The Chief Officer.
The person who is designated in the muster list.
The first officer arriving at the scene.
The first person arriving at the scene.
Code: 9YXm9U8n What is the approximate content of oxygen in air?
21 %.
99 %.
11 %.
51 %.
Code: #gY#KuVh A section of seawater pipe has been removed for maintenance. When refitting the pipe after completing the work the bolt holes in the flanges are found to be misaligned. What procedure should be followed to finish the work?
Adjacent pipework should be slackened off to allow the pipe to be aligned. Any incorrectly positioned brackets should be adjusted after the pipe is refitted.
Force the pipe into position and then hammer the bolts into the holes to hold the pipe flanges into alignment.
Use a chain block to pull the pipe flanges into alignment and leave it in place after the bolts are fitted to avoid overstressing the bolts.
Use wooden wedges to force and hold the pipe into the correct position and then fit the bolts.
Code: SEejZT4c As part of the regular maintenance for a paramagnetic oxygen analyser used for measuring the oxygen content of exhaust gas it is important to keep the sample line filter as clean as possible. Why is this necessary with this type of instrument?
Pressure variations in the sample chamber can cause errors so restrictions must be kept to a minimum.
The filter may rupture due to the high pressures generated by the sample pump.
The pressure drop across the filter may damage the sampling pump.
A high flow rate is required in order to deflect the sensing element.
Code: Osx7cxMn The packed gland on a centrifugal pump is leaking even though the gland has been “nipped up”. What is the correct action to take to stop the leakage?
Re-pack the stuffing box loosely with the correct size packing at the earliest opportunity.
Ensure the bilge well to which the leakage is draining is regularly pumped out.
Tighten up the gland as much as possible until the leakage stops.
Fit an extra ring of oversize packing to the stuffing box at the earliest opportunity.
Code: z8Tba3um It is common practice to connect a resistor over an alarm contact (see diagram) in many applications. Why is this connection used?
To monitor the cable/wires for break.
To avoid sparks on the contacts when opening and closing.
Enable measuring the total resistance of the circuit.
To stabilise power consumption.
Code: fbVtzp76 Is it always possible to use the word “ship” instead of the word “boat”?
Normally a small vessel is called a “boat” rather than a “ship”, otherwise it is not important.
A large vessel is always called a “ship” and never a “boat”.
Either can be used anytime.
A boat can only be used for vessels under 50 metres in length.
Code: jm6#ZBEo It is recommended that every prospective seafarer should, before being employed in a sea-going ship, receive proper training in personal survival techniques. In respect of such training several recommendations are made. Answer the question: “To whom should training in personal survival techniques be given?”
To all seafarers.
To deck hands mainly.
To officers only.
To all ratings.
Code: S9nOhbMt What is the correct name of the tool shown in the illustration?
Water Pump Pliers.
Adjustable wrench.
Padlock.
Flexible pipe.
Code: ufq3#u64 What is the correct name of the part highlighted in the illustration?
Connecting rod.
Rocker Arm.
Main bearing.
Push rod.
Code: $pYohshd What is the meaning of “make fast”?
To secure a rope.
To act quickly.
To coil a rope.
To avoid all meals.
Code: M2XDxaXs What is the correct name of the tool shown in the illustration?
Flat file.
Chisel.
Grinding machine.
Pliers.
Code: 7csEJ8OE What is the correct name of the part highlighted in the illustration?
Turbocharger.
Cylinder head.
Air cooler.
Crankshaft.
Code: #w62$vzr What is the correct name of the part highlighted in the illustration?
Crankshaft.
Camshaft.
Push rod.
Connecting rod.
Code: wrX661k# What do you understand by the order: “Move the pilot ladder to the other side?”
Move the pilot ladder to the other side, means: to shift the pilot ladder to the opposite side of the ship.
Move the pilot ladder to the other side, means: to rig another pilot ladder.
Move the pilot ladder to the other side, means: to change the position of the pilot ladder from the main deck to the fore deck.
Move the pilot ladder to the other side, means: to move the pilot ladder further along nearer to the bow.
Code: O1EkfcnS What is the correct name of the tool shown in the illustration?
Adjustable wrench.
Open end wrench.
Chisel.
Pliers.
Code: Z#NXabpl What is the correct name of the tool shown in the illustration?
Monkey wrench.
Pliers.
Chisel.
Padlock.
Code: DQaOUabi What is the correct name of the part highlighted in the illustration?
Camshaft.
Crankshaft.
Push rod.
Crankcase relief valve.
Code: al4PC3UF What is the correct name of the part highlighted in the illustration?
Exhaust valve.
Air inlet valve.
Air starting valve.
Fuel injector.
Code: vfMNkjcO What is the correct name of the part highlighted in the illustration?
Crosshead.
Bottom end bearing.
Connecting rod.
Liner.
Code: gm0W19NS What do you understand by: Bitter end?
Bitter end means: the end link of an anchor cable that is secured within the chain locker.
Bitter end means: to the very last moment.
Bitter end means: the toggled end of a lifeboat painter.
Bitter end means: a foul taste at the end of a meal.
Code: XQu3aGo4 What is the objective of the merchant navy?
To safely transport goods by sea.
To transport and deliver goods as quickly as possible.
To earn money for the shipowner.
To provide employment for persons who wish to become seafarers.
Code: qdkFvWRi What do you understand by: “Let go the port anchor?”
Let go the port anchor means: open the port windlass brake.
Let go the port anchor means: put the port windlass brake in gear.
Let go the port anchor means: put the port windlass brake in gear and lower the anchor.
Let go the port anchor means: slacken the port anchor cable.
Code: AzYDINYr What do you call the wide rung on a pilot ladder that prevents the ladder from twisting?
The wide rung on a pilot ladder that prevents it from twisting is called a “Spreader”.
The wide rung on a pilot ladder that prevents it from twisting is called a “Ani-twist rung”.
The wide rung on a pilot ladder that prevents it from twisting is called a “Long rung”.
The wide rung on a pilot ladder that prevents it from twisting is called a “Wide step”.
Code: dLKYV3H3 What action should be taken by the engine room rating if a piece of machinery is not functioning properly?
If machinery does not function properly, the Chief Engineer should be called out immediately.
If machinery does not function properly, it should be stopped and serviced immediately.
If machinery does not function properly, it should be immediately stopped every time.
If machinery does not function properly the duty Engineer should be informed immediately so that plans for further action can be made.
Code: 51ZZ2DKT What are the lists called that give the position and task during a lifeboat drill for all persons on board the ship?
The Muster List.
The Drill List.
The Crew List.
The Duty List.
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