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在线测试： Test online CES 5.1 for 2nd-Off / 3rd-Off, Gas tanker vessel
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A class D fire involves what type of material?
Liquids
Wood or other carbonaceous material
Gases
Metals
*What is (are) the basic component(s) of a Fire detection system?
the detector heads
The control unit
The power supply
All the alternatives mentioned
When the fire alarm signal is sounded every member of the ship's crew shall immediately proceed to their assigned fire station. Which one of the following signals is used as fire alarm signal on board cargo ships?
Intermittent signals by the ship's alarm bells.
Continuous blasts (very long blasts) by the ship's whistle and alarm bells.
Seven short blasts followed by one long blast by the ship's whistle and alarm bells.
One long blast with the ship's whistle and alarm bells followed by seven short blasts.
Fuel oil from a leaking fuel pipe has been collected in a drip tray under the boiler furnace.The oil is suddenly ignited by a backflash from the boiler burner.The boiler room is manned and the person present has the choice of various extinguishers. The fire is purely a surface fire. What would be the preferable extinguisher?
Powder
CO2
Water
Any of the mentioned alternatives
*What is the inherent danger in using halon to extinguish an extensive fire?
Depletion of oxygen in the air?
Development of explosive gases?
Depletion of the ozone layer?
Development of toxic gases?
What is the minimum number of independently driven fire pumps that must be provided on general cargo ships of 1000 gross tonnage and upwards?
4
1
2
3
With an Inmarsat-C terminal the option ‘PSTN’ for addressing is available. This option:
to deliver a message by telephone via a modem on the computer of the subscriber
to have the operator read the message by phone
Don't know
delivers a message as a telegram
A person slowly feel more sleepy and thirsty.The skin and slimhinner become very dry and there is a sweet taste of the breath. The glukose reaction shows positive. What kind of medicine will the person need as soon as possible?
Insuline.
Sugar lump, sugar drink or something sweet.
Nothing at all.
A glass of cold milk.
You are on a vessel 10 nautical miles off the coast of Nigeria, West Africa. Are you allowed to dump empty glass bottles overboard ?
Yes, glass bottles can be dumped overboard
Yes, the bottles can be dumped if they are ground so that the resulting particles can pass through a screen with 25 mm openings
No, glass bottles can not be dumped overboard
Yes, the bottles can be dumped if they are ground so that the resulting particles can pass through a screen with 50 mm openings
MARPOL 73/78 - Annex I. Your vessel sailed from Bahrain heading for Singapore.2 days after departure, you like to empty your machinery space bilges. What will be the correct procedures in this connection?
Call the bridge and request for position and permission to discharge overboard through oilywater separating and filtering equipment.
Discharge overboard through oily-water separating and filtering equipment without calling the bridge.
Call the bridge and request for position and permission to discharge directly overboard.
Wait till after darkness and discharge in most convenient way.
Give the meaning of the following symbol
CO2 horn
CO2 battery
Portable fire extinguisher
Area protected by CO2
When a ship is steaming along a course line, what is the importance of determining the set and rate of drift due to wind and current?
All of the suggested answers
To appreciate the possible extent of drift and dangers in the event of engine failure
To determine the time required to reach the next alteration of course point.
To determine the correction required to the course steered to maintain the planned passage.
The minimum number of lifebuoys required on passenger ships depends on:
the length of the ship
the tonnage of the ship
the sea area in which the ship is allowed to sail
the number of persons on board
Which of the following features is required for an anti-exposure suit ?
is marked that it must be worn in conjunction with warm clothing if it is made of material which has no inherent insulation
is marked with the name of the vessel to which the appliance belongs
is made of such a material that it cannot be torn
can be continously worn without impeding every duties to be performed by the wearer when in normal watch on the bridge
How many 'thermal protective aids' are required to be carried on vessels with open lifeboats?
They are not required, providing the boat has a canvas canopy which can be rigged in cold weather
Each lifeboat should carry the same number of thermal protective aids as the number of persons it is designed to carry
10 in each lifeboat
One for each person on board who is not provided with an immersion suit
Which one among the following information shall be marked on the container of an inflatable liferaft:
the number of persons the liferaft is permitted to carry
the name of the ship to which the liferaft belongs
the number of the liferaft
the port of registry of the ship to which the liferaft belongs
Which one among the following information shall be marked on the container of an inflatable liferaft:
the number of the liferaft
the port of registry of the ship to which the liferaft belongs
the name of the ship to which the liferaft belongs
length of painter
Which item among those below is included in the normal equipment of every lifeboat ?
an EPIRB
one life-jacket for each person
two efficient painters
sea-charts and navigating equipment
Which one of the listed requirements regarding liferafts does not correspond to present regulations? Every liferaft shall be so constructed that:
It's canopy has viewing ports in all directions
It can be dropped from a height of at least 18 metres
It can be towed at a speed of 3 knots with full complement
It can withstand repeated jumps from a height of 4.5 metres
How many rocket parachute flares are carried in each liferaft?
4
6
12
Nil
Which part of the human body out of the list given after is not considered to allow maximum heat exchange with the surrounding fluid (air/water)?
groin
feet
abdomen
face
When muster to a lifeboat drill, what is the first thing you do when entering the muster station?
Report your presence.
Wait for orders.
Put on your life jacket.
Wait for the order to put on your life jacket.
Where do you find minimum drill requirements?
In the SOLAS convention.
In classification society rules.
In manager's instructions.
In owner's instructions.
Which of the following detailed explanations should be mentioned in the Training Manual ?
The use of escape routes and other escape methods
The use of surface to air visual signals to be used by survivors
The use of all survival equipment
The use of navigational equipment for survival crafts
When there is doubt about the freshness of the atmosphere in enclosed or confined spaces, what action should be taken?
Ro-ro decks are always ventilated in advance of an operation
Open both bow- and stern doors
Arrangements should be made for testing of the atmosphere to ensure maintenance of 21% oxygen and a carbon monoxide content below 50 ppm in the atmosphere of the space
Supply filter masks to all crew working on ro-ro deck
What is the weather associated with being in the centre of an Anticyclone (a region of High Pressure)?
Persistent rain and very humid weather
Strong winds and heavy rain
Strong winds but with very little rain
Light winds and fair weather, sometimes fog.
When is a ro-ro vessel likely to pitch heavily?
When wave lengths are roughly equal to twice the ship’s length
When wave lengths are roughly half the ship’s length
When the seas are from astern
When wave lengths are roughly equal to the ship’s length
When we are using a diode to convert AC to DC, it is usually referred to as a
Regulator
Controller
Alternator
Rectifier
What is the purpose of a "Strum Box" on a General Cargo Vessel?
To prevent solids from entering the cargo hold via the bilges
To prevent water from entering the cargo hold
To prevent all solids from entering the bilge system
To prevent solids of certain size from entering the bilge system
Where on board ozone depleting substances are found?
In sewage systems
In compressed air systems
In electronic equipment
In refrigerated systems
What will a cadet find in the maintenance manual?
A Cadet will find a lubricating chart in the maintenance manual
A Cadet will find grease nipples in the maintenance manual
A Cadet will find machinery spare parts in the maintenance manual
A Cadet will find grease in the maintenance manual
What is the maximum allowable tank design pressure in the vapour space on Type "A" tanks?
0.43 barg.
0.5 barg.
0.25 barg.
0.7 barg.
What is the description for a sidelight, as shown in rule 21 of the International Regulations for Preventing Collisions at Sea?
A green light on the starboard side and red light on the port side, showing an unbroken light over an arc of 135 degrees, from right ahead to 22.5 degrees abaft the beam on the respective side.
A green light on the starboard side and red light on the port side, showing an unbroken light over an arc of 112.5 degree, from right ahead to 22.5 degrees abaft the beam on the respective side.
A red, green or yellow lantern, showing an unbroken light over an arc of 112.5 degrees.
A red light or a green light, with a minimum range, in a vessel of 50 metres or more, of 3 miles. In a vessel of 10 metres or more but less than 50 metres in length, a range of 1 mile.
What does the IMSBC Code emphasise with reference to the exposure of personal to the dust created when carrying some bulk cargoes?
The code does not make any reference to this hazard
A high standard of personal hygiene
The responsibility of the Master to ensure that staff are wearing the correct clothing
The restricted loading of certain cargoes which may be excessively dusty
On a RoRo vessel, which of the following is not required in the pre-stowage plan?
Checking communications equipment
Assigning crew duties
The operation of gas-tight and watertight doors
Stowage and securing of specialised cargoes
Some fresh shrimps have been peeled ready for serving; some salad leaves have been washed ready for the same meal. The meal will not be served for another four hours. What will you do with these ingredients in the meantime?
The shrimps and the salad will be placed in separate containers, covered and placed in the refrigerator until required.
The shrimps will be placed in the refrigerator and the sald placed in cold water, to keep it fresh.
The shrimps and the salad will be placed in separate containers, covered in foil and left on the bench until required.
The ingredients will be combined, seasoned and dressed, transferred to open serving dishes, then placed in the refrigerator until required.
Where would the Official number be “carved” on the ship?
On the main engine
On the main mast
On the main beam
On the propeller shaft
he instrument most widely used for testing of semiconductor diodes is
Ammeter
Ohmmeter
Oscilloscope
Voltmeter
What is "UNDER KEEL CLEARANCE", in the figure?
Under Keel Clearance is indicated by C, in the figure
Under Keel Clearance is indicated by A, in the figure
Under Keel Clearance is indicated by D, in the figure
Under Keel Clearance is indicated by B, in the figure
For what are bridge indicators required on board a ro-ro vessel?
All shell doors which, if left open, could lead to major flooding
All hinged doors in watertight bulkheads
All sliding doors in watertight bulkheads
All
What are the characteristics of Seed Cake group B (IMDG Class 4.2) cargo?
Liable to spontaneous combustion only
May self-heat slowly; may spontaneously ignite; liable to oxidise
May self-heat slowly; may spontaneously ignite; liable to oxidise; may produce carbon dioxide
Liable to oxidise only, causing subsequent reduction of oxygen in the cargo spaces
What is the correct way that the lookout should report the appearance of a light, in clear visibility, on the port side of the ship in a direction half way between right ahead and abeam?
The lookout should state "Light on the port bow"
The lookout should state "Ship observed 45 degrees to port"
The lookout should state "Ship seen to port"
The lookout should state "Light 4 points to port"
A clogged / dirty lube oil filter can be detected best by:
The pressure drop across the filter.
Visual inspection of the filter elements.
A decrease in oil viscosity.
High lube oil temperature.
Commonly used on an oil tanker, what does an "Explosimeter" measure?
The amount of H2S gas in a tank atmosphere
The level of oxygen present within a tank
The composition of hydrocarbon gas / air mixtures in a tank atmosphere
The relative amounts of nitrogen and combustible gases within a tank
What do you understand by: Let go the tug?
Let go the tug means: to tell the tug master to go away
Let go the tug means: to cast off the lines that secure the tug to the ship
Let go the tug means: to cut the lines secuing the tug to the ship
Let go the tug means: to take no notice of the tug
The piston rod of a large two stroke diesel engine has been damaged and is heavily scored in way of the piston rod gland (stuffing box). It has been decided that it is economically viable to recondition the rod at a shoreside facility. Select, from the options given, the most suitable repair method that should be used?
Recondition the rod by build up using electric arc welding and surface grinding.
Recondition the rod by machining away the score marks and fit undersize rings to the stuffing box.
Recondition the rod by surface grinding and build up using plasma spraying with metal similar to the original.
Recondition the rod by surface grinding and build up using chrome plating to give a harder running surface and avoid similar damage in the future.
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
Gas detectors are widely used on liquefied gas carriers. Before using a portable combustible gas indicator which has not been used for a period of a few hours what action should be taken?
Just renew the batteries. A calibration is only required if the instrument gives false readings.
Just check the filters. If the sample is free to flow the indicator will work correctly.
Just carry out a zero check and adjustment. If the instrument reads zero correctly it will also read correctly throughout the scale.
Always carry out a full calibration and battery check.
On a General Cargo ship which of the following statements is correct?
Cold rolled steel coils must never be loaded in rain
Cold rolled steel coils may be loaded in rusty condition
Cold rolled steel coils may be loaded in rain
Cold rolled steel coils are always shipped in stainless steel envelopes
How would you arrive at the ‘Stowage Factor’ of a carogo commodity?
By dividing the volume of the space by the tonnage of the commodity
By dividing the area of the space by the tonnage of the commodity
By dividing the gross tonnage of the space by the area of the commodity
By dividing the gross tonnage of the space by the volume of the commodity
What is the correct understanding of the term "FAIRLEAD"?
The access point where mooring lines are lead when making fast to the shore.
A fairlead is the hole through the deck where the anchor chain passes into the chain locker.
A fairlead is the direction that a mooring rope makes from the ship when made fast to the shore.
A fairlead is the hole through the ships side through which the anchor chain passes.
It is noticed that some of the items that were to be used to lift some machinery components during a maintenance routine had not been tested for over 5 years. Which of the options given is the correct action to be taken in a situation like this?
Return them to the lifting gear locker and make a note in the Register of Lifting Gear that they need to be tested.
Mark the items as not to be used and store them securely until they can be tested by a competent person.
Have them inspected immediately by a competent person so that they can be used for the task.
Scrap the items immediately as they are unusable once they have not been tested for 5 years.
What would happen if a ship’s frames became partly detached from the side shell plating?
The shell plating would buckle
The adjacent frames would buckle
Topside and hopper tanks would become deformed
There would be additional loads on the adjacent frames leading to possible shell plating failure
Modern cellular container vessels which carry refrigerated cargo below deck mainly maintain an acceptable temperature in the cargo holds by which of the features given in the options?
By designing the vessels with a larger gap between the columns of containers.
By using large natural ventilators to achieve the required air changes.
By using powerful mechanical fans to achieve a large number of air changes.
By insulating the fuel tanks in the vicinity of the cargo space.
The diode shown performs which function?
Reference the transistor to +15V.
Provide an overload route for transistor current.
Allow Op Amp to top up +15V rail.
Return inductive current to supply at switch off.
What action should be taken by the Officer of the Watch in the event of fire being reported to the bridge during the 00.00 to 04.00 watch?
Send the bridge look-out down to investigate
Sound the Fire Alarm
Stop engines and inform the engine room
Call the Master
Where should empty and unlceaned receptacles that previously contained toxic gas be stowed?
Under deck
On deck forward of the accommodation
Anywhere on deck
On deck abaft the accommodation
What is the absolute maximum size for a cargo tanks on oil tankers?
Maximum 40,000 cubic metres.
Maximum 35,000 cubic metres.
Maximum 20,000 cubic metres.
Maximum 30,000 cubic metres.
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
What are we calling materials with same molecule formula, but the properties are different because the atom structure is different?
Chemical reactions
Saturated hydrocarbons.
Isometric bonding.
Double bonding
What name is given to the process on an oil tanker, when inert gas is being blown into a cargo tank, to reduce the level of oxygen it contains?
Blowing.
Purging.
Venting.
Gas-freeing.
What strength of lashing belts should be used to secure light motor vehicles on a RoRo vessel?
Breaking stress 1.5 to 1.8 tonnes
Breaking stress 2.0 to 2.3 tonnes
Breaking stress 1.2 to 1.5 tonnes
Breaking stress 4.5 to 5.0 tonnes
There is an "industry standard" book, found on oil tankers, which explains all about oil cargo and cleaning operations and their associated hazards. What is it called?
The International Convention for the Prevention of Pollution from Ships (MARPOL).
The International Safety Management Code (ISM).
The International Safety Guide for Oil Tankers and Terminals (ISGOTT).
The United Nations Guidelines on Safe Ship Management (UNSSM).
The figures show a graphical symbol for a particular electronic component and a typical operating characteristic for the same. Which component?
Zener diode
Transistor
Tunnel diode
Thyristor
What is essential to ensure that efficient stripping of ballast tanks on a Bulk Carrier can be achieved?
A good stern trim is maintained during de- ballasting operations
The trim of the vessel is not important
A trim by the bow is required
The vessel must be maintained at an even keel
Select the three main checks that must be made to ensure that a hold of a General Cargo Vessel is fully weathertight before sailing ?
Hatch cover fully secured, hold access battened down and ballast tanks checked dry
Hatch cover fully secured, hold access battened down and bilge sounding pipe caps on
Hatch cover fully secured, ballast tank ventilators closed down and ballast tank sounding pipe caps on
Hatch ventilators closed, cranes secured and bilges pumped out
What is the direction of wind associated with an anticyclone (area of high pressure) in the Northern Hemisphere?
Clockwise around the high pressure
Straight towards the centre of the anticyclone
Directly away from the centre of the anticyclone towards the nearest Low pressure.
Anticlockwise around the high pressure
During start up of a steam plant it is necessary to warm through the steam range prior to use. How should this warming through be carried out?
Open the bypass/warming through valve and then fully open the main stop valve over a period of two minutes to ensure the warming through is completed as quickly as possible.
Using the bypass/warming through line for the main stop valve and with all line drains open to ensure all condensate is removed.
With the line drains closed to avoid losing too much high quality water.
Crack open the main stop valve and keep the drains open.
What must be done before dock workers and stevedores are allowed on board a General Cargo vessel?
Number of persons on board noted
Security checks are the responsibility of stevedores
Identification and passes must checked and number of persons on board recorded
Only no smoking rule to be enforced
The electric motor on one of your centrifugal pumps has for a period of time gradually been running at lower and lower Amp-load. The pump is still supplying water, but the pressure is reduced. Which of the below alternatives is probably the reason?
The pump is running at lower speed due to short circuit in the electric motor.
Inner diameter of impeller is bigger due to cavitations, or outer diameter reduced by erosion.
The pump has been more effective because the suction strainer has been removed.
The pump has suction from many places at the same time.
What factors do you consider as important before mooring a vessel?
Use of proper Personal Protective Equipment, Mooring stations should have effective hazard markings/ hazard highlighting, Stay clear of mooring ropes/wires, Be aware of Snap-back Zone, Proper procedures
Use of proper Personal Protective Equipment and be aware of Snap-back Zone
Use of proper Personal Protective Equipment
Use of proper Personal Protective Equipment, Well maintained mooring equipment, Make sure the area is tidy and clean, Mooring stations should have effective hazard markings/ hazard highlighting, Stay clear of mooring ropes/wires, Be aware of Snap-back Zone, Proper procedures, Effective communication
When a blackout occurs: what should be your first reaction?
Investigate the cause of the blackout
Inform the Chief Engineer
Inform the bridge about the reason for blackout, and expected time to restart.
Cancel audible alarms
From where on board can you find out the different types of protection equipment regarding where placed, how much, how many etc.?
In cargo control room.
The ship’s safety plan
Stated in your cabin.
In the deck log book
Which of the following is associated with staphyloccocal food posining?
Uncooked fish that has been defrosted overnight in a refrigerator.
Food that is not kept properly hot (or cold) as required.
Raw salad leaves.
Unwaxed citrus fruit.
According to "Summary of minimum requirements" in the IGC Code, what is the requirement for vapour detection for methane (LNG) cargoes?
Toxic vapour detection.
Flammable and toxic detection.
Flammable vapour detection.
Oxygen analyser.
A medium speed diesel engine is used to drive a controllable pitch propeller through a suitable clutch and reduction gearbox. What should the blade attitude normally be after the engine is started and before the clutch is engaged?
The blades should be in the full ahead position.
The blades should be in the zero pitch position.
The blades should be in the full astern position.
The blades should be in the zero thrust position.
An attempt is made to remove a ball bearing from a pump shaft using a hydraulic cylinder type bearing puller. It is noticed that the puller legs are starting to bend but there is no sign of the bearing moving. What action should be taken?
With the hydraulic pressure still on the puller try and shock the bearing into moving by hitting the top of the hydraulic cylinder with a hammer.
Remove the puller and hammer the bearing off the shaft.
With the hydraulic pressure still on the puller try and shock the bearing into moving by hitting the bearing with a hammer and punch.
Remove the puller and try and warm up the bearing and cool down the shaft a little before trying the puller again.
How do we recognize a leaking fuel injection valve during testing?
Fuel oil leaks out of the joint between the nozzle and the injector body.
The injector does not open at the normal opening set pressure.
The pressure falls off on the pressure gauge when trying to hold the pressure in the injector below normal opening set pressure.
The injector opens before normal opening set pressure.
Water and acid mixed together in certain concentrations can result in the development of dangerously high heat levels and aggressive reactions with steel surfaces. Which of the following is a general description of the approach to be adopted when cleaning a cargo tank after the discharge of Sulphuric Acid?
It is important that, once cleaning commences, large quantities of washing water can be delivered as quickly as possible, so that the acid is repaidly diluted.
It is critical that, as cleaning commences, washing water is introduced in a controlled manner, allowing time for the acid and water in the sump to mix slowly and thoroughly before the rest of the tank surfaces are flushed.
A mixture of hot fresh water and Sodium Hydroxide solution (50/50) should be prepared beforehand and then circulated around the tank, rapidly neutralising any remaining acid.
Any acid remaining in the sump should first be ejected and the tank ventilated for a minimum of 30 minutes before the introduction of any water, ensuring that there are insufficient acid residues to create any dangerous reaction.
The fuel consumption for the main engine is calculated using the readings from the supply and return flow meters which are of the positive displacement type. When compared to the quantities calculated from tank soundings and calibration tables and indicated on the contents gauges the consumption appears consistently high. Which of the options given is the most likely cause of this discrepancy?
The supply flow meter is giving too high a reading due to internal wear.
The tank calibration tables are incorrect.
The tank contents gauges are calibrated for the wrong fuel type.
The return flow meter is giving a low reading due to internal wear.
There are two basic types of turbocharging systems: constant pressure and pulse. The main difference between the two is in which of the following?
The arrangement of exhaust piping and exhaust gas receiver.
The casing of the turbocharger.
The arrangement of the scavenging air coolers.
The scavenging valves of the engine.
After a discharge of a cargo of bananas there are a large number of cartons of condemned fruit left on deck. The vessel is not in a special area and is more than 100 miles from land. Select from the options given the most appropriate action to take to dispose of the condemned fruit.
Keep the fruit onboard for crew consumption.
Keep the condemned cargo onboard until it can be landed at a suitable reception facility.
Remove and retain any plastic packaging before dumping the condemned cargo overboard.
Dump the entire condemned cargo, including packaging, overboard and make a note in the Garbage Disposal Log
Under international regulations what must be ensured when discharging a bulk cargo?
The vessel must not be excessively trimmed
The method of unloading must not damage the ship's structure
The terminal representative must remain on board at all times
The stevedoring foreman must remain on board at all times
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.
On a RoRo vessel, what factor(s) determine whether or not a cargo unit will tip over?
The length and width of the cargo unit
The width of the cargo unit
The shape and centre of gravity and securing arrangements of the cargo unit
How are cargo holds, below the freeboard decks car carriers, segregated?
By gas-tight doors
By weather-tight doors
By water-tight doors
By air-tight doors
What special requirements applies to fire alarm signalling systems in passenger ships
Remote control of fire doors and reactivation of ventilation
Same requirements for Fire alarm systems applies to all ships
Centralized in a continuously manned control station with remote control of fire doors, Indication of open or closed fire doors
Fail safe, Centralized in a continuously manned control station, Remote control of fire doors, Indication of open or closed fire doors, Reactivation of ventilation, Detector status, Back up powered
How many rescue boats should be provided on ro-ro passenger ships of 500 gross tons and above?
Two, and at least one of the rescue boats shall be a Fast Rescue Boat
One Fast Rescue Boat
Two Fast Rescue Boats, one on each side of the ship
None providing the ship has lifeboats
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
*Which part of the fresh water quantity provided for each person the liferaft is permitted to accommodate may be replaced by a de-salting apparatus?
0,25 l if the de-salting apparatus is capable of producing this quantity in 2 days
0,25 l if the de-salting apparatus is capable of producing this quantity in 1 day
0,5 l if the de-salting apparatus is capable of producing this quantity in 1 day
0,5 l if the de-salting apparatus is capable of producing this quantity in 2 days
该在线测试包含来自 CES 5.1 测试的 90 道随机问题，涉及您选择的主题。