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Online-Test: Test online CES 5.1 for 3rd-Eng/4rd-Eng
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The self contained air support system on a totally enclosed lifeboat is designed to provide safe and breathable air with the engine running for a minimum of how many minutes?
20 minutes
10 minutes
5 minutes
30 minutes
An enclosed lifeboat is fitted with a self-contained air support system. With the engine running, what is the minimum period of time the air should remain safe and breathable?
8 minutes
20 minutes
5 minutes
10 minutes
Which one of the listed requirements regarding launching appliances for survival crafts and rescue boats do not correspond to present regulations?
Launching appliances shall be constructed for minimum amount of routine maintenance
The launching mechanism shall be arranged for actuating from a position within the survival craft or rescue boat in addition to a position on the ship's deck
All launching appliances shall be capable of recovering survival crafts and rescue boats with their crew
Parts requiring regular maintenance by ships crew shall be readily accessible
Which of the following parameters does an explosimeter measure?
The TLV-TWA in the ambient air
The percentage of the L.E.L. in the ambient air
The TLV-STEL in the ambient air
The percentage of flammable fumes in the ambient air
*Which of the following instructions will generally be given by a port authority to allow welding or hot work in a cargo tank of a tanker ?
Before the tank is entered, lifeline, rescue harness and compressed air apparatus shall be ready at the relevant hatch
All answers are good
All results of gas measures and examinations shall be entered in the ship's deck log
Non-adjacent, partly filled slop tanks shall be emptied prior to the working period
*Where detectors of a fixed fire detection system are grouped in sections, each of these sections:
May cover more than one deck within accommodation spaces
May cover more than one main vertical zone in a passenger ship
May cover a machinery space of category A together with a control station
None of the answers is correct
*What maximum suction head can be expected from a fire pump?
Approximately 1 metre
Any height, provided the pump has enough power
Approximately 5 metres
Approximately 10 metres
*What is the expansion ratio of the foam produced by the fixed low-expansion foam fire-extinguishing system of an engine room?
Less than 20 to 1
Less than 12 to 1
Less than 5 to 1
Greater than 20 to 1 but less than 50 to 1
MMSI is short form of:
Maritime Mobile Service Identity
Mobile Maritime Safety Information
Merchant Mariners Signal Identity
Merchant Marine Ship identity
Why should water ballast not in general be carried in tanks intended for oil fuel in passenger ships?
Risk for pollution
Risk of ship stability problems
Risk of engine stop due to water in fuel oil
Risk of corroded fuel oil tanks
What must be done if the Oil Discharge Monitoring Equipment (ODME) should fail during a ballast voyage?
All of the mentioned must be performed
If the failure cannot be repaired onboard, the ODME must be repaired before the ship commences its next voyage
The failure must be noted in the Oil Record Book
The failure must be repaired
Which of the four figures illustrated shows the correct position line for the following situation: Latitude 50°00'N, Longitude 30°00'W, Time 1200 GMT. Course steered: 090° True, Speed: 12 knots, bearing of the sun: 200°, Intercept correction: 00°02' Towards (observed altitude - computed altitude).
Figure 2 is correct.
Figure 3 is correct.
Figure 4 is correct.
Figure 1 is correct.
Which of the following Meridian figures is correct? Approx. Pos: N30°00' W15°00'. Declination: 15°00'S.
Figure 4 is correct.
Figure 2 is correct.
Figure 1 is correct.
Figure 3 is correct.
Give the meaning of this symbol:
lifebuoy with line
lifebuoy
lifebuoy with light and smoke
lifebuoy with light
Give the meaning of this symbol:
lifebuoy with light and smoke
lifebuoy with light
lifebuoy with automatic parachute flare
lifebuoy with line
*In a distress situation and immediately after the distress signal has been sounded, what next action should be taken by the officer on duty ?
send distress signal to call for help
use the VHF radio telephone to ask ships in the vicinity to stand by
use the intercom to inform crew and passengers of the reason for the alarm
call the nearest coast radio station
Which of the following features is required for an anti-exposure suit ?
is fitted with a light and a whistle
is marked with the name of the vessel to which the appliance belongs
can be continously worn without impeding every duties to be performed by the wearer when in normal watch on the bridge
is made of such a material that it cannot be torn
Which one of the listed requirements regarding inflatable liferafts corresponds to present regulations? Every liferaft shall be so constructed that:
in the event of capsizing it will automatically attain a position providing an above water escape
have a floor capable of being sufficiently insulated against cold by means of inflated compartments, or by equally efficient means not dependant on inflation
have at least two entrances
it's canopy has viewing ports in all directions
Which one of the listed requirements regarding self-righting partially enclosed lifeboats do not correspond to present regulations? Self-righting partially closed lifeboats shall have:
stability for inherently or automatically self-righting with full or partial complement
permanently attached foldable canopy over open parts
sufficient number of pumps and bailers
safety belts fitted at each indicated seating position
How many hand held distress flares are carried in each lifeboat?
6
2
12
4
How much water per person is provided in a liferaft equipped with a desalting apparatus?
5 litres
1litre
2.5 litres
15 litres
Give the meaning of the following symbol
Rocket parachute flares
Survival craft portable radio
EPIRB
Radar transponder
What is the meaning of this symbol ?
Survival craft portable radio
Radar transponder
Survival craft pyrotechnic distress signals
EPIRB
*Which one of the following items has to be included in an abandon ship drill?
Starting and operating radio life-saving appliances
Launching and recovery of a survival craft
ensuring that passengers and crew are made aware of the order to abandon ship
Manoeuvring the lifeboat in the water
Where do you find instructions for tasks and duties in case of an emergency?
On posters at the lifeboat station.
In the muster list.
In instruction notices posted in the crew's cabins.
In instruction notices posted in messrooms, recreation rooms etc.
Normally ventilation fans in enclosed ro-ro spaces must be run continuously whenever vehicles are on board, why?
It is easier for the crew, they don't have to think about starting and stopping of fans
The manufacturer of the fans recommends continuous operation to reduce maintenance cost
An increased number of air changes may be required when vehicles are being loaded or unloaded, or where flammable gases or liquids are stowed in closed ro-ro spaces
It is better to run the fans continuously instead of testing the atmosphere
You are in open water and clear conditions. You are approaching the pilot station when you hear this signal from a vessel ahead of you. What does it signify?
That the vessel is starting his engine and resuming his passage.
That the vessel is operating astern propulsion.
That the vessel is picking up his pilot.
That the vessel is altering his course to starboard.
A cargo of palletized fruit on oblong pallets is being loaded into the 'tween deck space of a conventional reefer ship by stevedores under the supervision of the ship's crew. The pallets are loaded with the long side athwartships to ensure a stable stow. The final space in the first row is too small to fit another pallet athwartships. Select the option which gives the best course of action to be taken to deal with this situation.
Use a forklift truck to force the last pallet into the gap.
Complete the next row and fill the gap with dunnage (air) bags.
Complete the next row, cover the deck and secure the gap with wooden dunnage and plywood.
Turn the final pallet through 90 degree to fill the gap.
According to SIGTTO publications, what is a typical accuracy for LNG pressure measurement equipment?
+/- 1,00 bar (which will apply within the MARVS of the tank)
+/- 0,0005 bar (which will apply within the MARVS of the tank)
+/- 0,0015 bar (which will apply within the MARVS of the tank)
+/- 0,50 bar (which will apply within the MARVS of the tank)
Your vessel is equipped with fixed rotating tank-cleaning machines in every tank. You have just finished cleaning, in preparation for loading a cargo which is water-sensitive. What should you do with the machines?
It is not necessary to do anything. The amount of moisture remaining in a tank-cleaning machine could not affect the quality of the cargo in any way.
Ensure they are thoroughly drained down and blown through, using de-humidified air or nitrogen as applicable.
The nozzles and drain holes should be plugged.
They should be removed from the tank.
This circuit consists of two resistances, R1 = 6 ohm and R2 = 12 ohm , connected in series. Calculate the equivalent resistance R(S) .
R(S) =18 ohm
R(S) =1,5 ohm
R(S) = 72 ohm
R(S) = 4 ohm
What are the basic cargo stowage requirements for a small consignment of household cleaning products when loaded on a General Cargo Vessel?
Stow away from any other chemicals
Stow away from foodstuffs
Stow next to bagged grains
Stow on deck only
Which of the following food types or food components listed below is considered to be dangerous to health if consumed on a regular basis?
Soft fruit.
Root vegetables.
Moderate volumes of fibre.
High levels of sodium.
According to SOLAS Regulation all dedicated seawater ballast tanks on oil tankers shall have an efficient corrosion prevention system such as hard protective coatings or equivalent. With regard to coatings do SOLAS set any requirement to colour?
Preferably dark colour.
No requirement.
Preferably light colour.
Preferably light red colour.
On the figure 4 possible definitions of the term "ASTERN" are shown. Which one is the correct one?
Astern is defined as C on the figure
Astern is defined as D on the figure
Astern is defined as A on the figure
Astern is defined as B on the figure
Which of the following letter combinations represents a level indicating controller on a process and instrumentation diagramv
CIL
LIR
CIR
LIC
he instrument most widely used for testing of semiconductor diodes is
Ammeter
Ohmmeter
Oscilloscope
Voltmeter
What are the type of signal output is derived from a NiCr/Ni thermocouple?
mA.
Ohm.
mV.
Watt
What are the people probably doing in the picture?
The people are fighting a fire
The people are playing with water
The people are hosing down the cargo hold to clean it.
The people are pressure testing the hull plating
A Bulk Vessel is to load a cargo of grain; pre loading calculations show that IMO stability criteria cannot be achieved; the vessel should do which of the following?
The grain surfaces in some or all of the cargo spaces must be secured
The cargo can still be loaded
An exemption certificate must be applied for
The vessel will be unable to load the cargo
A routine inspection of a hold space on a liquefied gas carrier is necessary. Checks of the atmosphere indicate that there is only 19.5% oxygen content. Which of the following actions is recommended?
Postpone the inspection and continue ventilating until an oxygen reading of 21% is achieved.
Carry on with the inspection as normal since 19.5% oxygen content is sufficient for breathing.
Ensure all persons entering the space for the inspection wear self contained breathing apparatus.
Ensure the inspection is carried out quickly in case the oxygen content reduces any further.
The position of the ship is found by taking a series of bearings using a magnetic compass. How should an error of 5 degrees WEST be applied to the compass bearings?
The same error applies to all bearings and therefore it can be ignored
Add the 5 degrees to the bearings
Subtract 5 degrees to the bearings
The error should be "High" or "Low" and therefore more information is required.
The seating surface of a superheater handhole door on a boiler has been damaged due to leakage of superheated steam leaving a cut across the surface. Which repair method, from the options given, would be the most effective?
Machine the surface until the cut has been removed and a new full seating area is formed.
Fit a more pliable gasket to take up the irregularities in the surface.
Build up the cut with weld and re-machine the seat.
Fill the cut with plastic metal and file smooth.
If a patient is bleeding from nose
Put a piece of swab or gauze in the nose
Let the blood stop by itself
Pinch soft part of the nose for 10 minutes while keeping the head forward over a basin
Ask the patient to lie flat on the floor
Continuity testing of a delta connected three phase induction motor yields the following results; U-V =3 ohms, V-W =3 ohms, W-U =6 ohms.Which of the following is the likely condition?
Short circuit winding between W and U
Open circuit winding between W and U
Short circuit between V and Earth
Partial fault between W and U
In the context of oil tanker operations, what is "clingage"?
Oil residues remaining in the bottom of a cargo tank after tank-cleaning
The resistance to flow in a pipeline during the discharge of an oil cargo
Electrostatically charged bubbles of air and moisture suspended in an oil cargo after loading
Residues remaining on the inside of a pipeline, or on the internal structure of a cargo tank after an oil cargo has been discharged
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 10% more than the manufacturer's recommendation using a torque wrench.
Tighten it to the manufacturer's recommendations 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.
What is the minimum number of ”Firemen’s outfit” on gas tanker, above 5,000 m3, carrying flammable products?
2 sets of Firemen’s outfits
4 sets of Firemen’s outfits
3 sets of Firemen’s outfits
5 sets of Firemen’s outfits
During inspection of a medium speed diesel engine piston of the composite type it is found that the steel crown is loose at its connection to the alloy skirt. Further inspection reveals damage to the surfaces and evidence of metal particles where the two parts are connected. Select, from the options given, the likely cause of this type of damage.
Fatigue due to excess compression at the joint between the components.
Crushing due to over tightening of the piston crown retaining bolts.
Shear of the metal surfaces due to excessive load on the engine.
Fretting due to loss of compression at the joint between the components.
After discharge of any refrigerated cargo a thorough inspection of the vessel should be carried out before presenting the vessel for loading the next cargo. Amongst the reasons for this is to ensure that any traces of or residues from the previous cargo are removed. This is particularly so if a fruit or meat cargo is to be loaded after a fish cargo has been carried. Select, from the options given, the main reason for this requirement.
Fish is usually carried frozen and there may be some damage to the insulation.
Fish can be oily and may leave an oily residue in the cargo space.
Fish is strong smelling and the odour may contaminate the next cargo.
Ventilating with fresh air may only remove the odour temporarily and it will build up again if residues are present.
Methane/air mixtures in the range of 5.3 - 14% are flammable and have an auto ignition temperature of approximately 595 degrees C. What is meant by the term 'auto ignition temperature'?
It is the lowest temperature at which flammable gases are given off by the mixture.
It is the lowest temperature at which the mixture will ignite when a flame is applied to it.
It is the lowest temperature of the source of ignition required to ignite a flammable mixture.
It is the temperature at which the mixture will spontaneously ignite and continue to burn without an external source of ignition.
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 scraper 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 the rings could score the piston rod.
If the gaps are too small then the flow of scavenge air through the gland would be reduced and the gland would overheat.
What is the meaning of the term "Make Fast", when mooring the ship?
Make Fast means to coil up a rope
Make Fast means to avoid eating all meals during the daylight hours.
Make Fast means to act very quickly
Make Fast means secure the ropes to the bits
How is the condenser cooling water flow regulating valve automatically controlled in a vapour compression refrigeration system?
By the compressor discharge pressure.
By the quantity of refrigerant in the system.
By the temperature of the refrigerant after the evaporator.
By the temperature in the refrigerated room.
The range of a transducer is 0-200 bar. The standard output signal is 4-20 mA. What is the output signal when the process value is 100 bar.
24 mA
4 mA
10 mA
12 mA
Chemicals and harmful substances are safely stored in a designated locker on board, why?
For safety reasons. Many substances found onboard are capable of damaging the health and safety of those exposed to them. Before any chemical or harmful substance is delivered to a crewmember, the personnel shall receive training, instructions and information so that they know and understand the risks arising from use.
For safety reasons and stock control. When chemicals or harmful substances is delivered to a crewmember, the user shall sign for the amount received.
Chemicals and harmful substances must be kept away from passengers so that they don't steal it.
For stock control. Most of the chemicals and harmful substances we use on board are expensive.
How is damage to the piston rod stuffing box rings avoided when removing and replacing the piston during overhaul of the piston of a large two stroke diesel engine?
A tapered guide sleeve should be fitted over the threaded end of the piston rod.
The piston rod gland should always be removed from the engine before the piston is lifted out to avoid damage to the rings.
The lower part of the piston rod is wrapped in rags.
The piston rod nut is put on during removal and refitting of the piston through the gland.
When 3 phase alternators are operating in parallel, it is very important that the reactive load is evenly shared so that the total alternator loads are evenly shared. If the total alternator load is the vector sum of active and reactive loads, which side of the vector diagram (power traingle) shown represents the reactive load?
Either (X) or (Y)
None of the mentioned alternatives
(X)
(Y)
A conventional reefer vessel is to have its refrigerating capacity increased by fitting a 'power pack' consisting of a diesel engine and generator housed in a twenty foot container. Which of the options given would be the best location to stow the ‘power pack’?
On the main deck, close to the fresh air inlets.
On the main deck, close to the fresh air exhausts.
On the main deck, well clear of the fresh air exhausts.
On the main deck, well clear of any fresh air inlets.
What is the maximum allowed filling limit given by IMO for the cargo tanks of LNG carriers?
95%
98%.
100%.
90%.
What kind of information do we get from a Mollier diagram?
We get information about enthalpy, specific volume of liquid, liquid/ vapour mixture, temperature of vapour when pressure is known, pressure in cargo tank when the liquid temperature is known etc.
We get information about enthalpy, liquid/ vapour mixture, temperature of vapour when pressure is known etc.
We get information about enthalpy, specific volume of vapour, liquid/ vapour mixture, temperature of vapour when pressure is known etc.
The IMO IGC code details the requirements for cargo piping systems on gas carriers? Which one of the options given is part of these requirements?
Cargo pipelines must resist at least 1.25 times maximum vapour pressure.
Cargo pipelines must resist horizontal displacement from cargo surge pressure.
All cargo pipelines must be made of high tensile steel.
Cargo pipelines are not allowed beneath deck level on gas carriers.
What is the name of the portable walkway or access between ship and shore?
Bulwark
Bridgeway
Accommodation ladder
Gangway
Many conventional reefer vessels are built with wooden gratings that support the cargo above the steel deck of the vessel. These gratings are typically carried on 50mm x 100mm wooden bearers. From the options given, select the most important consideration in relation to these wooden bearers.
The bearers must all be placed running in the same direction in the hatch.
Only wood of the quality of the existing bearers should be used.
The bearers should, as far as practicable, be placed clear of the vent holes in the gratings.
Only knot free, straight wood should be used.
What is an analogue signal?
A measure of voltage using an oscilloscope.
A stable electric signal.
A continually variable electric signal.
A measure of electric current.
After a couple of hours of operation the failure alarm sounds for a heavy fuel oil purifier which is operating on a timed automatic sludge cycle. Upon investigation the purifier is found to be running slowly and when opened up the casing and sludge outlet is heavily fouled with sludge in contact with the bowl. From the options given what is the most likely cause of this problem?
The heavy fuel is unstable leading to excessive high viscosity sludge formation.
The dirty oil throughput is excessive.
The purifier bowl has not closed properly.
The clutch for the drive shaft is worn and slipping.
Once a vessel has discharged a fruit cargo it is important to check that all cargo residues have been removed, particularly if the next cargo is to be a sensitive fruit cargo. From the options given, select the most important reason for this requirement.
The cargo residue is unsightly.
The cargo residue can produce large amounts of ethylene.
The cargo residue may become smelly.
The cargo residue may attract the attention of the loading surveyor.
Hydrogen sulphide is a component associated with crude oil cargoes. At which of the following concentrations will dizziness, headache, nausea, etc occur within 15 minutes, followed by loss of consciousness and possibly death, after 30-60 minutes exposure?
50-70 ppm.
1,000 - 2,000 ppm.
200-300 ppm.
500-700 ppm.
What action should be taken if the boiler water tests show that the pH-value in the boiler water is slightly over 11.5?
Blowdown the boiler and Increase the dosage of boiler water treatment chemicals.
No action is required this is the normal level.
Raise the boiler water level above normal to dilute the contents.
Blowdown the boiler and decrease the dosage of boiler water treatment chemicals.
On a conventional reefer vessel carrying palletised cargo, dunnage bags (air bags) are used to prevent the pallets from moving during bad weather. Assuming that the air bags are correctly positioned and inflated, select, from the options given, the other important function provided by these bags
They will help to achieve a good stowage factor.
They will prevent short circuiting of the cold air.
They will prevent chafing between the pallets
They will protect the ships structure.
Which statement is correct for a fire door class "A-60"?
It is a requirement to keep class "A-60" fire doors closed for minimum 60 minutes
Class "A-60" fire doors shall be capable of preventing the passage of flame for minimum 60 minutes
Class "A-60" fire doors shall prevent the passage of smoke and flame and the average temperature of the unexposed side shall not rise more than 180
Class "A-60" fire doors must be closed within 60 seconds
A road trailer is marked as follows: SWL 70t; Tare wt. 6t. What is the gross weight of the trailer when carrying it maximum payload?
76 tons
420 tons
70 tons
63 tons
On a Container vessel, what precautions should be taken when cashew nut shell liquid has spilled out of a container?
Avoid skin contact and inhalation of toxic fumes
Cool the container from as far away as possible
Approach the container wearing a chemical protection suit
Clean up the spillage wearing rubber boots and safety gloves
How should lashing belts be stowed on board a RoRo vessel?
According to their Safe Working Load (SWL)
According to their date of manufacture
According to model type
According to the manufacturer
Where are the maximum Shearing Forces likely to occur on an oil tanker?
At the mid-length of the ship
At the bulkhead between empty and full tanks
At the forward collision bulkhead
At the tank lids
When securing a non-standardized portable tank what is a favourable securing angle that will prevent it from transverse sliding?
30 to 35 degrees
10 to 15 degrees
18 to 25 degrees
5 to 10 degrees
The Chief Engineer tells you to carry out Hot work on deck. What kind of permit do you need?
Cold work permit because the work will be carried out on open deck
Work permit
Hot work permit
No permit is required as long as the work shall be carried out on open deck
The ship is en route. When may passengers visit the bridge?
Passengers are not allowed to visit the bridge while the ship is en route
When the weather is nice and the sea is calm
During daytime if the traffic is smooth
Whenever they want
When the cable length from the temperature sensor to the place where we want to read the temperature exceeds approx. 10 meters we normally have to, in case of a Pt 100, in some way compensate for the cable resistance. Do we also have to do this if we choose to use a T802 temperature sensor?
Yes
No
Not applicable
Depends on temperature to be measured.
Where should grease be applied to a twistlock?
Over the entire outer surface
Under the handle
Between the twistlock cone and associated housing
At the base of the twistlock cone
After main power is restored, a timed sequential restart of motor-driven auxiliaries is necessary to avoid:
Overvoltage due to current surges
Generator overload due to many motors starting at simultaneously
Overloading creating earth faults
Over-frequency due to overspeed of generator
Are we allowed to load ammonia on inert gas?
We are not allowed to load ammonia on inert gas except when the inert gas is dry enough
We are not allowed to load ammonia on inert gas
We are allowed to load ammonia on inert gas if the inert gas has dew point less than 0oC
Ammonia can be loaded as long as the cargo tank is liquid free of last cargo
In which situation might you have to use non-verbal communication with passengers?
There is an explosion in the cargo hold.
You are outside in a severe storm.
The ship's electrical system has failed.
The ship's communication system is not working.
Which of the following pump types is not considered to be self priming?
Gear pump.
Screw pump.
Centrifugal pump.
Reciprocating pump.
When cross-flooding arrangements to correct unsymmetrical flooding and excessive heel angels in damaged condition are installed in passenger ships, what is the maximum angle of heel after flooding but before equalization?
10 degrees
15 degrees
20 degrees
30 degrees
Is it necessary to cool the water samples from the cooling system, before testing?
Yes, must be cooled to 25 Degr. C.
Yes, must be cooled to 50 Degr. C.
No, must be heated to about 95 Degr.C.
No.
During bunker transfer operations, deck scuppers should be:
Plugged when required
Plugged to prevent spilled oil flowing overboard
Only fitted to the side of the vessel that bunkers are being loaded
Attended by crew to collect any spilled oil that approaches
What is to be considered when deciding the position of the accommodation on an oil tanker?
They must be at the after end of the vessel.
There are no restrictions to the position of the accommodation.
A single failure of deck or bulkhead shall not allow fumes into the accommodation spaces.
There must only be one accommodation block.
If fuel or diesel oil is leaking from our HP fuel oil pumps, and penetrate into the lube oil system of the engine, the result may be:
No harm to the lube oil as long as we clean the lube oil strainers very often.
The inside of all lube oil piping, filters and the engine itself will participate in a cleaning process when the fuel or diesel are mixed with the lubrication oil.
It will destroy the properties of the lube oil and lead to serious damage in our engine.
It will dilute the lube oil so the lubrication in the engine becomes more effective.
The safety valve on a steam boiler shall:
Block the spring and the valve so no steam is escaping in the funnel, if the spring on the valve is not working properly.
Open, when pressure in the boiler is in excess of normal working pressure.
Be used to regulate the the steam pressure.
Be adjusted by the crew when necessary.
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