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Heim Online-Tests CES Oil tanker Deck Support Test online CES 5.1 for Deck department, Support level, Oil tanker vessel
Online-Test: Test online CES 5.1 for Deck department, Support level, Oil tanker vessel
Online-Test
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By a ‘geographical area call’ in the DSC system is meant:
Don't know
a DSC message for all vessels within a certain area from a position in the DSC message, and the degrees are given in northerly and westerly direction
a DSC message for all ships heading towards a certain geographical area
a DSC-message for all vessels within certain area marked by areference position, given in the DSC message and the degrees are given in southerly and easterly direction
A received DSC ‘distress alert’ contains the following information: “UNDESIGNATED DISTRESS” Of this distress case:
Don't know
time is unknown
the position is unknown
the nature of distress is unknown
By “collect call” is meant:
a call for account of the receiver
an urgent call
Don't know
a group call
For which ships is the MARPOL convention applicable?
For all vessels.
For all vessels except passenger vessels.
For all vessels except those engaged in coastal trade.
For tankers and other vessels carrying persistent oil as cargo.
What is the correct understanding of the term "Bending moments" when applied to ships?
The longitudinal Bending Moments are the forces between empty and full compartments causing the ship to bend and change shape
The Bending Moments of a ship are the forces acting on the ship causing it to hog and sag.
All of the suggested answers
The longitudinal Bending Moment at any section within the ship is the total moments tending to alter the longitudinal shape of the ship
Which international regulations govern the disposal of waste material, including galley waste, from ships?
Chapter II, SOLAS 1974.
The Industry Best Practise Guide for Restaurant Management.
Annex V, MARPOL 73/78.
Section III, ISPS Code.
What is the purpose of an expansion valve in a refrigeration system circuit?
To control the cooling water temperature through the condenser.
To control the cargo hold temperature.
To control the flow rate of liquid refrigerant to the evaporator.
To control the suction pressure at the compressor.
Choose the option which is most likely to result in erosion of the tubes in a heat exchanger.
Cooling water velocity too high.
Cooling water temperature too high.
Cooling water pressure too high.
Rate of heat transfer too high.
What is the safe time for operating the crankcase door when oil mist alarm is activated and the engine has been stopped?
After 20 minutes
After 1 minute
After 10 minutes
After 5 minutes
What is meant by a two stage compressor ?
Two stage air compressors have the capabillity to compress air in stage one and dry the air in stage two.
The compressed air goes back from stage two and into stage one to get extra pressure before it goes into the starting air bottles.
The two stage air compressor take some air from the surraundings to stage one and compress and some air from the surraundings to stage two and compress.
Air from stage one goes through discharge valves in stage one and through suction valves into stage two. In stage two it will be compressed to high pressure air.
On a Container vessel, when should a vessel's hatch pontoons not be lifted?
When the heel of the ship is excessive
When lighting conditions are poor
When the SWL of the gantry crane is not clearly marked
Many marine steam boiler designs incorporate external "downcomers". What is the main purpose of these downcomers?
To provide extra support for furnace tubes.
To increase heating surface area.
To ensure adequate circulation in all boiler operating conditions.
To provide a flow path for the steam bubbles.
You are to carry a cargo of Phenol across the North Atlantic in winter time. What precaution will you take with the double bottom tank located under the cargo tank containing the Phenol?
It is not necessary to take any additional precautions with the double bottom tank because it is part of an entirely separate pumping system.
It should be continuously vented to avoid the build up of condensation on the structure around the product.
It should be empty, to avoid cold water contacted the structure around the product because Phenol has a relatively high melting point.
It should be inerted, because Phenol has a very low Flash Point.
You are in an area of restricted visibility. You hear this sound signal. What does it mean?
That there is a vessel engaged in underwater operations in the vicinity. She has divers down.
That there is a vessel aground in the vicinity.
That there is a vessel at anchor in the vicinity.
That there is a vessel in distress nearby.
On a container vessel, with regard to the carriage of Calcium Hypochlorite what is not allowed under the IMDG Code?
Cargo transport units to be carried under deck
Calcium Hypochlorite packed and shipped in Intermediate Bulk Containers (IBCs)
Calcium Hypochlorite packed and shipped in bags
Packaging group II
What is the meaning of instrument calibration
Comparing input and output values against a documented standard
Comparing two instruments of the same type
Turning gauge too an easy reading position
Adjusting size to fit process connection
In a purifier assuming the separating temperature is correct, what is probably wrong if processed oil contains water
Back pressure is too high
Gravity disc is too small. Flow rate is too high
Gravity disc is too small
Gravity disc is too large
In the event of a severe scavenge fire, which of the following is most likely to be seriously damaged?
Piston rod and stuffing box.
Exhaust valve.
Crosshead bearing.
Piston crown.
On a General Cargo Vessel, what must be done if a crane or derrick block sheave is found to be worn?
No action needs to be taken
Inform Chief Officer and prepare to change block if required
Block changed at next thorough inspection
Monitor condition of block regularly
When opening hatch covers on a General Cargo vessel, what would indicate that there was ingress of water into the cargo holds during the voyage?
Rust-stained cargo
Evenly-distributed rust spots around the cargo hold
Evenly-distributed rust spots on cargo
Bright rust streaks on hatch coamings
What is the main information we get from a Mollier diagram?
We get information about enthalpy, specific volume of vapour, liquid/vapour mixture, temperature of vapour when pressure is known and pressure in the cargo tank when liquid temperature is know.
We get information about enthalpy, specific volume of vapour, liquid/vapour mixture, temperature of vapour when pressure is known.
We get information about enthalpy, specific volume of the liquid and latent heat.
We get information about specific volume of vapour, liquid/vapour mixture, temperature.
The chemical abbreviation "H2S" is often associated with Crude Oil cargoes. What does the abbreviation stand for?
Hydrogen Sour.
Hydrogen Separation - 2nd distillation stage.
Hydrogen Sulphide.
Halogenated Sulphide.
What is the expected state of the refrigerant immediately before the expansion valve in a vapour - compression refrigeration system?
Vapour at high pressure.
Liquid at low pressure.
Liquid at high pressure.
Vapour at low pressure.
During loading operations on conventional reefer vessels steel sheets are sometimes placed in the hatch square to avoid damage to the gratings in the square. Select, from the options given, the likely consequence of leaving the steel plates in the hatch square.
Steel has a different heat capacity to the cargo and may cause unexpected results from cooling the cargo during passage.
The stevedores will claim against the vessel for removing the steel plates.
The steel plates may overload the gratings if they are left in place with cargo on top.
The steel plates may block the flow of refrigerated air through the cargo.
Consider a vessel with a 6 cylinder main diesel engine operating with one cylinder out of operation. What would you expect to be the approximate maximum reduced engine load to allow safe emergency operation in this condition?
Approximately 70 % of MCR
Approximately 30% of MCR.
Approximately 90 % of MCR
Approximately 50 % of MCR
Your ship has its main entry door from the maindeck on the starboard side, a few metres back from the front of the accommodation. It is also the closest emergency exit from the ship's offices and the crew mess-room in the event of an emergency. You are about to commence loading cargo. There are no significant security concerns. What should happen to the door?
It can be open, provided the wind is blowing away from the accommodation.
It should be closed and locked.
It should be closed, but not locked.
It should be open in case an emergency occurs.
The purpose of the “flame scanner” on the boiler is
check the colour of the flame
all the alternatives
controlling the combustion air supply to the boiler
shut off the oil flow if the flames goes out
Which of the following alternatives are recommended when decanting water overboard from the sloptank?
Maintain a speed of at least 12 knots when pumping overboard
Leave a "cushion"of water in the sloptank, to minimize the risk of polluting the sea
Using dispersing chemicals in the sloptank
Discharge under the waterline to avoid any sheen on the surface
Indicate the correct name for the tool on the sketch:
Grinding machine
Chisel
Flat file
Pliers
At what temperature would a fully refrigerated cargo of propane normally be carried on a liquefied gas carrier?
minus 43° C
minus 4° C
minus 33° C
minus 23° C
Why do all gas carriers have deepwell or submersible cargo pumps?
The use of electric motors.
It is not permitted to have cargo pomp-room below the upper deck.
To avoid having cargo pipes in cargo tanks.
It is cheaper and less complicated than pump-room.
According to the ISGOTT definition, what is "volatility"?
The tendency of a crude oil or petroleum product to produce gas.
The ability of a crude oil or petroleum product to resist ignition.
The measure of a crudre oil or petroleum product's vapour pressure.
The tendency of a crude oil or petroleum product to ignite.
What are the two parts of the magnetic compass error?
Variation and Deviation
West and East errors
Permanent and induced magnetism
The latitude and longitude
You have been tank-cleaning at sea and are about to arrive in port and go alongside the terminal for loading several grades of chemicals. Many of the lines (headers) have been open for drying and inspection, but will not be required for this particular operation. What should you do with them?
Fit and secure a blank flange to every line that is not required.
Leave the blank flanges off, but hang a label over each line that will not be required, stating "not to be used this port".
Leave the lines open, but tie-off (or otherwise secure) the manifold valves so that they can not be operated by accident.
Leave the lines open to prevent condensation building up inside.
Is it required to have full secondary barrier on spherical Type "B" tanks?
Yes, and the secondary barrier must be able to contain tank leakage for a period of 15 days.
Yes, if the tank is not crack propagation resistant.
Yes, it is required to have full secondary barrier.
Only partial secondary barrier required.
What is another term for ‘Cargo Sweepings’?
Cargo hold debris
Waste
Marine Pollutants
Dry cargo residues
What indicates the correct weight of a wrongly declared container?
The container CSC plate
The ship’s loading computer
Strain gauges fitted to the shore gantry cranes
The tare weight stamped on the container
A general cargo vessel is loading to summer loadline marks; where should be the final level of water ?
The top of the winter mark
The mid point between the summer and the tropical mark
The bottom of the summer loadline mark
The top of the summer loadline mark
When a changeover from HFO to diesel oil is going to take place, we want this to be carried out as follows:
as fast as possible to save HFO.
as fast as possible to save steam.
slow to get slow cooling.
as quick as possible, to obtain a fast temperature reduction to cool the HP fuelpumps.
Radio frequency signals can carry information from one place to another if they are modulated. There are several ways to modulate a carrier. Which modulating method is illustrated here?
Frequency modulation (FM)
Pulse-code modulation (PCM)
Amplitude modulation (AM)
Pulse-width modulation (PWM)
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.
Where is the normal position of the "Pivot Point" of the vessel when going ahead?
1/4 of vessel's length from the stern
1/3 of the vessel's length from the bow.
Amidships
Normally varies dependant on the speed ahead
What is important to prepare prior to a helicopter operation?
To stop the vessel completely
To increase the speed of the vessel
To light up the area for pick-up
Make sure all loose deck equipment at helicopter deck is stowed away and secured.
What are flexitanks used for?
The carriage of liquid cargoes of a particular specific gravity
The carriage of liquid cargoes that do not have a Proper Shipping Name
The carriage of hazardous liquids, in bulk
The carriage of non-hazardous liquids, in bulk
What is the Maximum Securing Load of high tensile steel chains?
35% of the breaking strength
40% of the breaking strength
25% of the breaking strength
30% of the breaking strength
Under what circumstances may a watch-keeping engineer undertake other duties?
A watch-keeping engineer may undertake other duties when the main propulsion controls are in manual operating mode
A watch-keeping engineer may undertake other duties when the main propulsion system requires constant supervision
A watch-keeping engineer may undertake other duties when he has been properly relieved of his watch-keeping duties
A watch-keeping engineer may undertake other duties when the ship is at sea and the weather is calm
What is the main purpose of having a deaerator in a boiler feed water system?
To remove oxygen and other dissolved gases from the feed water.
To provide a dosage point for feed water treatment.
To reduce the total dissolved solids in the feed water.
Toact as the primary feed heater.
Will it matter to the accuracy of the measurement how you install a resistance element in a thermo-well
Will only result in mechanical problems
No influence at all
Will have a minor influence on the measurement
Wrong installation will result in a major deviation in measurement
You are going to inspect a fresh water tank together with one of the Engineers. Is it safe enough to open the manhole and enter the tank (it is only fresh water) or do you have to take extra precautions before entering?
Make sure that the tank/ enclosed space is gas free, ventilated and the oxygen content is measured. O2 content shall be 21% before entering the tank/ enclosed space
Bring a flashlight and put on safety shoes
Use a breathing apparatus if the oxygen level is below 21%
Remember to have a colleague standing by to assist you if any problems
On the figure 4 possible definitions of the term "ABEAM" are shown. Which one is the correct one?
Abeam is defined as B on the figure
Abeam is defined as C on the figure
Abeam is defined as A on the figure
Abeam is defined as D on the figure
How to determine when the cool down is complete?
When from compressor to vapour manifold reach - 25 C.
When temperature monitor or liquid level gauges show a liquid presence in the bottom of the tank.
When vapour from HD compressor reach - 40 C.
When outlet from spray header reach - 10 C.
Maintenance of lifeboats and davit arrangements is routine work onboard. Why should you not carry out this type of work alone?
It is boring to work alone and you should be able to chat with colleagues while working
If you need something to drink, the second person can get it for you
If the person working on the lifeboat falls over board, the second person can lower the lifeboat and prepare pick-up immediately
There might be a risk of falling even though harness and lifeline is used. A second person should always stand by to assist with tools etc. and other practical arrangements.
A large vessel develops a sudden sheer when it stops moving through the water, having been steaming through a shallow water channel for several miles. The sheer may be strong and unexpected and is due to what reason?
The shallow water reduces the effectiveness of the rudder and when the vessel stops any applied rudder will become suddenly more effective.
The vessel stopping shifts the pivot point forward and creates a turning moment and results in the ship swinging towards the bank.
The hydrodynamic interaction effects from the banks of the shallow water channel acts on the stern causing the vessel to sheer strongly
The large volume of water dragged behind the vessel continues to move forward and cause a strong turning moment on the stern of the vessel
What is a Declaration of Security?
A checklist jointly completed by the Ship Security Officer and the U.S. Coast Guard
A document stating the ship’s security level
A document between the port and the cargo owner stating security
A checklist jointly completed by the ship and shore security representatives
You have made a turning circle at full speed in deep water. You are now going to make one with initial speed, slow ahead. Do you think the diameter will differ from that of initial full ahead?
Yes, it will be much smaller with slow ahead
Yes, there will be a large difference in the turning diameter between full and slow ahead
Yes, it will be much greater with slow ahead
The diameter will be the same whatever initial speed we have when starting the turn
Why is it important in a RoRo vessel to ensure that cargo is loaded in a uniform way
because it looks better and image is important
because it makes it harder to lash the cargo correctly if you don't
To prevent high sheer forces and bending moments on the vessel during the loading / discharge operations
What will happen if you overload the plate in a microwave?
Standing time will need to be doubled.
You will need to double, or even treble, cooking times and accept that the outer parts of the food will be overcooked.
Cooking will be uneven and there will be "cold spots" in the food.
The oven will not work in automatic mode.
Generator 1 and 2 are initially working in parallel. Prime-mover 2 suffers a total fuel loss. The likely outcome is:
Generatorset 2 trips on reverse speed
No.1 machine overspeeds and trips out on overload
No.2 generator trips on reverse power
No.1 machine overloads and trips out on overspeed
During pre-entry checks of an enclosed space onboard a liquefied gas carrier it is necessary to check the condition of the atmosphere. If the gas detection equipment to be used for the checks included a catalytic type combustible gas indicator, an absorption type toxic gas detector and a paramagnetic type oxygen analyser, which would be the preferred order for the checks?
Oxygen content followed by hydrocarbon gas content and then toxic gas content.
Toxic gas content followed by hydrocarbon gas content and then oxygen content
Hydrocarbon gas content followed by oxygen content and then toxic gas content.
Hydrocarbon gas content followed by toxic gas content and then oxygen content.
Where is "AFT", in the figure?
Aft is B, in the figure
Aft is D, in the figure
Aft is A, in the figure
Aft is C, in the figure
The auxiliary boiler for the supply of low pressure heating steam has an automatic combustion control which operates on a two step control principle. The boiler fails to attempt to start up during a period of normal operation even though the steam pressure has fallen below the set point. What is the most likely cause of this fault?
The photocell for detecting flame on is dirty.
The pressure switch for the combustion air supply is faulty and remains open.
The pressure switch for low steam pressure is faulty and fails to close.
The electrical supply for the control system is isolated.
What is the Chief Officer worried about?
The Chief Officer is worried that that oil will leak out before the ship is moored
The Chief Officer is worried that oil will run through the overboard valves, into the sea
The Chief Officer is worried that oil will be pumped into the sea
The Chief Officer is worried that that the cadet will not adjust the moorings properly
What distinguishes a "parcel" chemical tanker from other designs?
Such a vessel is fitted with interactive computerised gauging, pumping, valve control and alarm systems for each tank, enabling all data for a single cargo to be concentrated in a single computer display.
Such a vessel is automatically able to achieve segregation of hazardously reactive noxious liquid substances by its design alone.
Such a vessel is fitted with a highly accurate tank gauging system, enabling it to deliver multiple parcels to different receivers from within the same cargo tank.
Such a vessel has a higher number of relatively small capacity, independent cargo tanks, each with its own line and pump, enabling it to carry and deliver multiple grades simultaneously.
How many two-way VHF radiotelephone apparatus shall be provided on board a passenger ship of 500 gross tonnage and upwards?
2
One for each survival craft
It is required to have a fixed two-way VHF fitted in a survival craft
3
The effective stability of a tug, when assisting a vessel to manoeuvre, can be decreased by hydrodynamic interaction with the ship it is assisting. Where is the most dangerous position of the tug relative to the ship, for this adverse affect to be found?
The most dangerous position is when the tug is alongside the amidships section of the larger vessel.
The most dangerous position is where the tug has made fast the towing spring and is then moving ahead of the larger vessel.
The most dangerous position is where the tug approaches the stern of the larger vessel and enters into its associated positive pressure field.
The most dangerous position is where the tug approaches the bow rounding the forward shoulder of the larger vessel.
The timing of the engine is delayed. The exhaust temperatures are high. How would you expect this to affect the turbocharger?
Higher air and gas temperature after turbocharger.
Surging of the turbocharger.
Decreased turbocharger revolutions.
Increased turbocharger revolutions.
How might a leak from a cargo tank on an oil tanker be readily detected during the voyage?
By regularly monitoring the vessel's trim on the cargo computer - any cargo that leaks will run to the end of a compartment, resulting in an increase in trim.
By occasionally opening a selected tank and manually measuring the cargo ullage, then comparing it to the 'after loading' reading.
By regularly monitoring void and ballast spaces, such as by testing them for hydrocarbon content and sounding them.
By frequently monitoring cargo level equipment readouts and comparing them to the load port departure readings.
The HP discharge valves of a 2 stage air compressor suffer from build up of carbon deposits even though the correct maintenance is carried out on them. What is the most likely cause of this problem?
Water in the compressor lubricating oil.
Worn scraper and piston rings.
Compressor cooling water temperature too low.
Ineffective air intake filter.
When an engine is working normally, the lubricating oil return temperatures are moderate and the running temperatures of the moving parts are also moderate. Lubricating oil is not a volatile liquid and the temperature inside the crankcase is insufficiently high to cause concentration of vapor. What would be the flash point of the lubricating oil?
Above 250 deg C
Above 150 deg C
Above 100 deg C
Above 200 deg C
LNG carriers are usually designated as Type 2G vessels according to the IMO IGC code. In relation to the 'Ship's Survival Capability' what is the level of preventative measure for cargo escape required for this type of vessel according to the Code?
Maximum preventative measures.
Minimum preventative measures
Moderate preventative measures.
Significant preventative measures
A thermistor which provides feedback for a thermal control system is suspected to have failed. Assuming there is no available replacement, which of the following methods may be used to prove it has failed?
Connect a mV source in parallel with the thermocouple connections.
Connect a mA source in parallel with the thermocouple connections.
Disconnect the thermocouple lead from the conttroller and replace with a mA source.
Disconnect the thermocouple lead from the controller and replace with a mV source.
You are approaching the port entrance. What do these lights mean?
A vessel may proceed only when she has received specific orders to do so, except that vessels which can safely navigate outside the main channel need not comply with this message.
Vessels may proceed - two-way traffic.
A vessel may proceed only when she has received specific orders to do so.
Vessels may proceed - one-way traffic.
When may watertight doors in watertight bulkheads in tweendeck cargo spaces be open on board passenger ships?
Daytime only
At any time if watched by an authorized person
In ports only
During cargo handling only
To maintain good relationship among the crew on board a vessel, one must be:
Polite and diplomatic while talking to crew members
Give authority to others
Strict and authoritative while giving orders
Understanding, Co-operative, and have respect from both sides
What is the maximum length of a fire zone on any deck?
50 meters
100 meters
40 meters
30 meters
What damages a ship’s cargo holds?
Ship's vibrations
Heavy weather
Repeated stresses at a particular location
What is the Centre of Floatation of a General cargo Vessel?
The centroid of the ship's waterplane area
The amidships section at any given waterplane
The centroid of the ship's underwater volume
The centroid of the ship's half waterplane area
What is the purpose of Material Safety Data Sheets?
To provide all personnel including emergency personnel with procedures for handling or working with that substance in a safe manner
To provide personnel in deck- and engine department with procedures for handling or working with that substance in a safe manner
To provide the safety officer with procedures for handling or working with that substance in a safe manner
To determine if the substance is flammable or not
When should a spreader be used for general cargo operations?
When the weight of a load needs to be evenly distributed by the lifting gear
When the length of a load is such that slinging it will create unacceptable bending moments
When the length of a load is such that slinging it will create sagging
When handling open-top containers
The pressure inlet to a pressure gauge is varied from zero to full scale and back to zero again. The output (indicating pressure) versus true pressure is shown in the diagr.The non - coincidence(mis - match) of loading and unloading curve is due to internal friction in the instrument. What do we call this phenomenon?
Dead band
Threshold
Hysteresis
Resolution
What is the time limit for abandonment of ro-ro passenger ships?
30 minutes from the time the abandon ship signal is given
15 minutes from the time the abandon ship signal is given
There is no time limit
2 hours from the time the abandon ship signal is given
What would affect the proper functioning of a bridge fitting?
Pitting
A fully extended spindle
Lack of grease
Buckling
What is the purpose of introducing inert gas into cargo tanks?
To create a non-explosive atmosphere in the tank.
To reduce the static electricity potential in the tank.
To prevent evaporation of cargo.
To make the tank safe for entry.
Why should ro-ro passenger ships be subdivided into main vertical zones?
To comply with passenger safety, cargo safety and hull integrity training defined in the STCW convention
To comply with specific provisions for fire integrity defined by the Classification Society
To comply with specific provisions for fire integrity defined in SOLAS and to ensure safety of passengers and crew in case of a fire
To comply with company specific standards defined in the Safety Management System
How is the bilge pump protected from cargo debris being sucked in from the bilges?
Filter in the bilge suction pipeline
Non-return valve
Keeping the bilge space clean at all times
Strum box
Many chemical tankers are fitted with deepwell centrifugal cargo pumps. What is the process by which any leakage of cargo or hydraulic oil into the pump cofferdam is detected?
Proving.
Stripping.
Purging.
Purifying.
It is necessary, prior to loading a refrigerated cargo on a conventional reefer vessel, to prove that the hold bilges are clear and that the bilge system is functioning correctly. Which of the cargo types given in the options would be expected to produce the most water during a voyage?
A cargo of fruit loaded at field temperature.
A cargo of fruit loaded pre-cooled.
A cargo of hard frozen perishable goods.
A cargo of chilled meat.
You will be at sea for 45 days with a crew of 30 men. How many tomatoes would you buy?
35 kg
60 kg
50 kg
70 kg
What is the mean of mean draught?
Forward mean draught + after mean draught divided by 2
6 (forward mean draught + after mean draught) divided by 8
Forward mean draught + after mean draught + midship mean draught divided by 2
Forward mean draught + after mean draught + midship mean draught divided by 6
Any person serving on board who without the permission of the shipmaster leaves the ship in distress or other danger while the master still on board shall be liable to??????
Imprisonment for a term not exceeding 12 months.
Fines or imprisonment for a term not exceeding 12 months.
Fines or imprisonment for a term not exceeding 6 months.
Fines.
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