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Главная Онлайн-тесты CES Gas tanker Deck Support Онлайн-тест CES 5.1 для Deck department, Support level, Gas tanker vessel
Онлайн-тестирование: Онлайн-тест CES 5.1 для Deck department, Support level, Gas tanker vessel
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By “collect call” is meant:
a call for account of the receiver
an urgent call
Don't know
a group call
A Category "B" Chemical Cargo which has a melting point of more than 15° C. can be carried:
In tanks where the heating coils have been removed and supply and return steam pipes blanked off?
In tanks not adjacent to the ship-s shell plating having heating coils?
In tanks adjacent to the ship-s shell plating having heating coils?
In any tank onboard the vessel?
What possible reason could there be for the identification mark associated with a Racon not being visible on the radar screen?
The radar may be suppressing the mark with application of the Interference Rejection control.
The racon may not be transmitting a pulse.
All of the suggested answers.
The transmitted radar frequency may not trigger the Racon transmitter.
Your vessel is moving in Panama Canal waters. When must a regular engineer be on watch in the engine room?
At all times
When requested by the pilot
When the chief engineer is attending the engine room
Not necessary to be in the engine room if the unmanned engine room status is practiced and alarms have been checked
What kind of safety equipment must be worn during mooring operations?
Safety helmet, safety shoes.
Boiler suit, working gloves.
All of the mentioned equipment.
Dress according to the climate.
Indicate the correct name for the tool on the sketch:
Padlock
Adjustable wrench
Flexible pipe
Water Pump Pliers
The abbreviation "NPSH" is often seen in connection with the efficiency of cargo pumps on oil tankers. What does this abbreviation stand for?
Necessary Pumping Suction Hazard.
Natural Pumping Standard Height.
Nominal Pressure Suction Head.
Net Pressure Suction Head.
According to 33 CFR 156, oil tankers trading in US waters are required to test and document the testing of cargo transfer hoses and transfer pipe system. What is the minimum requirement when testing these components?
That no leakage occurs under static liquid pressure of at least 1.25 times the maximum allowable working pressure.
That no leakage occurs at the nominal anticipated working pressure.
That no leakage occurs under dynamic fluid pressure of less than 1.5 times the maximum allowable working pressure.
That no leakage occurs under static liquid pressure of at least 1.5 times the maximum allowable working pressure.
When lashing general cargoes why are short lashings preferred to long ones?
Because long lashings are more prone to vibration
Because they are more easily tightened and held in tension
Because some of the ship’s lashing points may not be designed to hold long lashings
Because the safe working load of lashing materials decrease with length
What is meant by the term "segregation"?
The stowage of cargoes when calculated by a computerized load program.
The planned, separated stowage of cargoes that may react dangerously with each other in the event of leakage or other damage.
The process of electronically transferring the data on cargoes loaded on a vessel between the load port and the discharge port, such that import dcumentation is prepared in advance of the vessel's arrival.
The planned adjacent stowage of packaged goods, thereby confining a listed hazard within the same area of the ship.
What is the minimum number of independently driven fire pumps that must be provided on passenger ships of 4000 tons gross tonnage and upwards?
5
2
4
3
The bottom end bolts for a high speed diesel engine are checked to see if they are fit for service by measuring the free length against a standard length. During overhaul the check reveals that one out of a pair of bolts has exceeded the recommended elongation limit. From the options given select the most appropriate action to be taken.
Replace all of the bottom end bolts in the engine with new spares.
Replace the pair of bolts with new spares.
Refit the bolts as long as one of them is within the limit it should be ok.
Replace the single bolt that has exceeded the limit with a new spare.
Passenger ships have a normal requirement of 1 lifejacket per person + 10% for children. In addition to this, how many lifejackets have to be stowed in conspicuous places on deck or at the muster stations?
10% extra
25% extra
5% extra
50% extra
Which of these is not covered in the chain register?
Deck cranes
The engine room gantry crane
Derricks
The gangway winch
Which of the following cargo types could normally be stowed next to drums of cement on a General Cargo Vessel?
Pallets new clothing
Steel plates
Bagged rice
New motor cars
What is Inert Gas?
It is a gas containing insufficient oxygen to support the combustion of hydrocarbons.
It is a gas containing too much hydrocarbon vapour to support combustion.
It is a gas containing no oxygen.
It is a gas containing less than 21% by volume oxygen.
When checking the zero point on a combustible gas indicator that is to be used to detect hydrocarbon gases in an empty cargo tank which method should be used from the options given?
Pass oxygen gas through the sample chamber
Pass fresh air through the sample chamber.
Pass carbon monoxide gas through the sample chamber.
Pass methane gas through the sample chamber.
Before leaving the machinery spaces of a UMS vessel whose engine room is protected by a fixed CO2 installation, should the duty engineer:
Ensure all doors are in closed position.
Lock all of the entry exit doors to prevent entry by unauthorised personnel.
Hook the main entry/exit doors in the open position to speed up entry in the event of an alarm.
Leave the doors in whatever position they are in.
What do you understand by the term Slewing?
Making the grab bucket/hook move up and down.
Making the complete crane move port and starboard.
Making the crane jib move up and down.
Making the crane jib move from side to side.
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
A record is to be made of the functions of an operational refrigerated container. Select, from the options given, the most likely method that would be used to make such a record.
The record would be made on a 'Partlow Chart'.
The record would be made on a paper printout.
The record would be made from manual checks made throughout the time onboard.
The record would be made on an electronic data logger.
You can reduce the need for security guards in certain areas by installing:
Anti-intruder devices
Vapour detectors
Water cannons
Metal detectors
On what criteria is the Threshold Limit Value (TWA) based?
The maximum concentration of a vapour to which a worker may be repeatedly exposed for a maximum of 12 hours per day, 5 days per week without serious health effects.
The concentration of a vapour expressed as a percentage of the oxygen content of an environment in which a fit human-being can work continuously for a period of 8 hours.
The time-weighted concentration of a substance to which a worker may be repeatedly exposed for a normal 8 hour working day and 40 hour week without adverse health effects.
The maximum concentration of harmful vapour to which a worker may be exposed for a period of 15 minutes up to 4 times within any 24 hour period without adverse respiratory effects.
When ballasting operations are about to start on a bulk carrier, what important checks must be made?
That all air pipes are open and that the pipeline and valve system is correctly set up
That the vessel is even keel and upright
That the cargo operations are completed
That the hold bilge system has been cleaned and the access ladders checked
Which function is this circuit performing?
Modulating
Differentiating
Telemetering
Integrating
When measuring level of liquids with a differential pressure meter, the name of the sensing device is:
Pressure diaphragm
Float
Positive displacement tube
Capacitance probe
Why do we use stabilisers on passenger ships?
To decrease the dynamic stability
To adjust the trim of the vessel
To increase the intact stability
To decrease the rolling angle of the vessel
How to distinguish a LNG carrier with prismatic tanks from an ordinary oil tanker?
The tanks of an LNG carrier protruding above the main deck.
The freeboard of an LNG carrier is significantly greater.
By its distinctive profile and much larger size.
By consulting the Gas Code.
On the figure 4 possible definitions of the term "CENTRE LINE" are given. Which one is the correct one?
Centre line is given by D on the figure
Centre line is given by B on the figure
Centre line is given by A on the figure
Centre line is given by C on the figure
An emergency situation on board must be reported to the company by:
The fastest means available
The Sat-C
The email to save cost
The Telex to have a record
Which is the "AFT BREAST LINE", in the figure?
The Aft Breast Line is B, in the figure
The Aft Breast Line is C, in the figure
The Aft Breast Line is D, in the figure
The Aft Breast Line is A, in the figure
Indicate the correct name for the part marked on the sketch:
Rocker
Main bearing
Push rod
Connecting rod
Some oil cargoes contain high levels of a chemical called Hydrogen Sulphide, or H2S. The atmosphere on deck may be monitored if you are loading such a cargo and an alarm may sound if the level of H2S vapour around the deck becomes unsafe. Each company and terminal will have procedures, but, in general, which of the following describes the procedure that you, as a deck watchman, should follow if this happens?
Remain exactly where you are but report the alarm to the Duty officer immediately.
Put on any facemask with which you have been issued and make your way immediately into the accommodation, sealing all doors behind you. Make your way to the Cargo Control Room and report the situation.
Go to the ship's side and attract the attention of the nearest terminal operator. Inform him of the alarm and request that he attends to it immediately.
Put on any Emergency Escape Breathing Device with which you have been issued, leave the area immediately, moving in an upwind direction, report the situation to the Cargo Control Room.
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.
Some centrifugal cargo oil pumps are designed with an automatic stripping system, which allows the cargo oil tank to fully discharge its contents. By what principle does such a stripping system operate?
On the basis that, if cargo vapour can be stopped from entering the cargo pump suction inlet, the flow will continue without cavitation.
By automatically reducing the rate at which oil cargo enters the cargo pump, such that any vapour lifted along with the liquid does not cause a loss of suction.
By the optimum size and positioning of the suction inlet that feeds the automatic stripping system, which ensures that the cargo oil tank is discharged to the maximum possible extent.
On the principle that if the suction is fitted low enough in the cargo oil tank and a specified minimum trim is maintained, suction will be available until the tank is completely discharged.
What extra precautions should be taken by the officers and crew if some of the passengers are disabled, i.e. using wheelchair, cane, blind etc.?
All passengers that will require extra assistance, also in case of an emergency situation/ evacuation, must be registered in order to allocate crew to assist them if needed.
Locate them in large cabins to ease their stay.
Passenger with some form for disability must travel with accompany, and live in same cabin or next door.
They must be placed in cabins on the same level as the muster station.
Where do you load dangerous goods?
Dangerous goods shall only be loaded in designated ares on the ro-ro deck
The driver of a tank lorry can decide where to park the vehicle
The officer in charge of loading can decide where to load dangerous goods if the number of vehicles and passengers are limited
As long as the ship is certified to carry dangerous goods there are no restrictions
What name is given to the "energy" that a person "burns" during the day and which is replaced in the amount and type of food he eats?
Cellulose.
Callibres.
Canapes.
Calories.
Why is burlap used to cover the bilge perforated plates?
To prevent small particles of cargo draining into the bilges
To protect the plates from stevedore damage
To prevent drainage into the bilges
To allow water and large particles of cargo to drain into the bilges
Some cargoes carried on liquefied gas carriers are toxic and are given a Threshold Limit Value (TLV) as a time weighted average (TWA). What does the TLV-TWA usually indicate?
It indicates the maximum vapour concentration that a person can be exposed to for 8 hours per day or 40 hours per week.
It indicates the maximum vapour concentration that a person can be exposed to for one hour.
It indicates the absolute maximum vapour concentration that a person may be exposed to at any time.
It indicates the maximum vapour concentration that a person can be exposed to before breathing apparatus is required.
Which of the following foods will increase the cholesterol levels in the blood if eaten in excessive quantities?
Pork
Chicken
Vegetables
Fish
IMO publishes the IGC Code relating to LPG and other liquefied gas carriers. What does the IGC code primarily deal with?
Specifically, how gas carriers for hydrocarbon gases are designed
Specifically, the safety of personnel sailing on gas carriers.
How all liquefied gas carriers are constructed and equipped.
The most efficient way to operate any gas carrier.
Pitting corrosion is found around the steam drum water line of a high pressure steam boiler. From the options given, select the one most likely to cause this condition.
Dissolved oxygen levels are too high.
Seawater leakage from the condenser.
Total dissolved solids levels are too high.
Excess hydrazine dosage to the feed water system.
What is the maximum allowed filling limit given by IMO for the cargo tanks of LNG carriers?
95%
98%.
100%.
90%.
What will the cadet find in the engine store?
He will find The Bosun in the engine store
He won't find anything in the engine store
He will find the port anchor winch in the engine store
He will find new brake bands in the engine store
What does the abbreviation "SBT" stand for in the context of the construction and layout of an oil tanker?
Segregated Ballast Tank
Specified Ballast Tank
Strengthened Ballast tank
Single Barrier Tank
If an enclosed space needs to be entered, what is the first thing that must be done?
A responsible person must be appointed
The chief officer must be asked for permission to enter the space
A full Risk Assessment must be caried out
Two crew members must be asked to stand-by outside the space
As per SOLAS requirement fast rescue boats shall be constructed in such a way that:
They will not capsize
They are self righting
They are self righting or capable of being readily righted by its crew
They can be righted by 5 persons
"Part way through a profiling interview with a supplier, the package the individual is carrying arouses your suspicion. What do you do?"
Confront the individual and demand that he open the package.
Discreetly inform someone of your suspicions so he or she can get assistance.
Call for help on the radio.
Take the package and open it.
Which of the following categories of galley waste is it prohibited to dump into the sea under any circumstances and irrespective of where the ship is located?
Inert ash from incinerated food waste.
Ground or comminutated paper, rags and glass.
Plastics, including bags, bottles and packaging.
Ground or comminutated food waste.
What is most important when using expanded square search?
Accurate navigation
Fixed rate of turn
Fixed turn radius
Constant speed
For a cargo compartment on a chemical tanker to meet the definition and requirements of a "pressure tank", what must its design pressure be?
At least 1.0 bar gauge.
At least 2.1 bar gauge.
Less than 0.7 bar gauge.
Greater than 0.7 bar gauge.
Why do Bending Moment (BM) curves sometimes differ between the loading manual and loading computer?
Because BM values in loading computers are often taken at the bulkheads whereas loading manuals calculate stresses at intermediate points as well
Due to the age of a vessel
Because BM values in loading manuals are often taken at the bulkheads whereas loading computers calculate stresses at intermediate points as well
Due to steel replacements made during the life of a vessel
Which of these procedures should crew follow when conducting a search?
Search the perimeter of the space up to a height of 5 feet.
Wait in the area they’ve finished searching until they’re contacted for a status update.
"Stand quietly in various spots around the space, listening for unusual sounds like the tick tock of a clock mechanism."
Conduct random or spot checks of logical threat areas.
Too low exhaust temperature in one cylinder becomes because of:
Water leakage in the cylinder.
Faulty fuel injection pump.
Any of the others.
Too low admission on the fuel injection pump.
What is the most common way to control the tank pressure on a LNG tanker?
To let the gas escape through the safety valves.
To transfer the gas to another tank which is at a lower pressure.
To discharge the gas into the atmosphere through the vents.
To use the boil-off gas as fuel for the vessel.
Clay slurry, coal slurry, dextrose solution and molasses. In which MARPOL product category are these substances classified under the revision that came into effect on 1st January 2007?
"Y"
"Z"
"OS" (Other substances)
"X"
Which statement about stress is correct?
Stress interferes with an individual's ability to respond to a threat.
An example of stress is a shipboard fire.
Individuals in a shipboard emergency experience different levels of stress.
Stress is an unusual reaction to a threatening situation.
Who decides the number of lashings you should put on a trailer?
The loading officer
The Bosun
The operation manual
The captain
What is the required capacity of the inert gas plant?
At a rate of at least 125% of the maximum rate of discharge capacity.
At a rate of at least 150% of the maximum rate of discharge capacity.
At a rate of at least 135% of the maximum rate of discharge capacity.
Sufficient to avoid negative pressure in cargo tanks.
The water content of inert gas is important when the gas is used for cargo tank inerting and drying operations on a liquefied gas carrier. Which drier arrangement for the inert gas will result in the lowest water content and dew point of the inert gas?
An absorption drier followed by a refrigerated drier in series can reduce the dew point down to less than minus 40 degrees C.
A refrigerated drier on its own can usually reduce the dew point to less than minus 40 degrees C.
A refrigerated drier followed by an absorption drier in series can reduce the dew point to less than minus 40 degrees C.
A refrigerated drier and an absorption drier operated in parallel can reduce the dew point to less than minus 40 degrees C.
On the diagram, which letter indicates what is meant by the word "DRAUGHT" of the ship?
Draught is indicated by B, in the figure
Draught is indicated by A, in the figure
Draught is indicated by C, in the figure
Draught is indicated by D, in the figure
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.
The Ziegler-Nichols method is used in control engineering when setting up the system. Which of the system components given in the options would this method be applied to during initial set up?
Sensing unit to set the range.
Valve positioner to optimise speed of operation.
PID controller for tuning.
Valve and actuator to set the span of travel.
Which of the following statements is incorrect with regard to loading bagged fishmeal?
Cargo holds should be free of cargo residues
Cargo holds should be free of infestation
Dunnage is not required
Cargo holds do not require ventilation
Why should a surveyor be in attendance when discharging steel rebars from a General Cargo Vessel?
In case cargo is found damaged during cargo discharge operations
Because individual rebars will be inter-twined with those below them and will therefore be discharged in damaged condition
Because of charterers? requirements
Because it is a P. & I. Club requirement
Why is it so important to shut off the source of fuel before extinguishing the flames on a gas fire?
To prevent forming a potential flammable gas cloud
To minimise the use of fire-fighting media
To prevent chemical reaction with the extinguish agent
To minimise damage to property and environment
When a vessel is moving in shallow water it will experience an effect known as "Squat". Which of the following statements most accurately specify the results of squat on the vessel?
There will be a change of draught and a reduction in the speed.
If the speed of the vessel through the water is kept to "Slow Ahead" there will be no effect due to Squat.
There will be an increase in the vessels draught while moving through the water
There will be a reduction of the vessel's underkeel clearance and a possible change of trim.
To Sweep the Ship in an emergency means that crewmembers are:
giving safety announcements from the bridge
sounding alarm bells from the bridge
searching for passengers in cabins or other hidden places onboard
directing passenger crowds to muster and embarkation stations
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
In an emergency, passengers are most likely to be familiar with the ship's layout and be able to find escape routes, if they are:
First-time travelers on an overnight ferry trip, and they are in their cabins at the time of the emergency
Frequent travelers on a 3-hour domestic ferry trip, and they are in the passenger lounge at the time of the emergency
On an 8-day cruise, and they are in their cabins when the emergency occurs on the sixth day of the cruise
On an 8-day cruise, and they are in their cabins when the emergency occurs on the first day of the cruise
What is the name by which the regulations which prevent and control pollution from ships are known?
The International Shipping Pollution Laws.
SOLAS
MARPOL
The ISP Code.
A tachometer for a diesel engine is reading erratically. The tachometer is of the non-contact type using magnetic proximity switches to generate the signal. What is the most likely cause of this problem?
The shaft magnet has fallen off.
The proximity switch has dirt on the outside casing.
The shaft magnet has become demagnetised.
The proximity switch is loose on its mounting.
Compressed air for instrument and control purposes needs to be of high quality. In order to condition the air filter modules are usually fitted to remove the contaminants. If there is evidence of oil carry over to the final elements in the instrumentation air system what is the most likely cause?
The coalescer module is saturated and requires renewal.
The drier section of the module needs to be regenerated.
The air compressor piston rings need to be renewed.
The particle removal module is choked.
On the air compressor's crankcase there is a small valve that lets off overpressure. What do we have to do if this valve is letting off pressure and oil moisture ?
Check the clearance in the bearings.
Increase the flow of cooling water.
Overhaul the compressor unit.
Block the valve because it pollutes the engine room (block off the valve).
Inspection of the LP turbine rotor reveals some erosion damage to the blading on the final stage. Which of the given options is most likely to be the cause of this condition?
Steam inlet to the turbine superheat temperature low.
Steam inlet to the turbine pressure too low.
Excess LP bleed steam take off.
Total dissolved solids in the boiler too high.
For what purpose is inert gas utilised on a gas tanker?
Inert gas is utilised on board gas carriers to neutralise atmosphere in hold/ interbarrier spaces
Inert gas is utilised on board gas carriers to held overpressure in cargo tanks when discharging
Inert gas is utilised on board gas carriers to neutralise atmosphere in cargo tanks, pipes and hold/ interbarrier spaces
Inert gas is utilised on board gas carriers to gas free cargo tanks
You are on a tug and are towing an unmanned barge. You are restricted in your ability to manoeuvre. The total length of the tow is 219 metres. What daylight signals are required by the International Regulations for Preventing Collisions at Sea?
A diamond shape, where it can best be seen, on the tug only. Three shapes shall also be displayed, being three balls in a vertical line.
Three shapes shall be displayed on the tug, where they can best be seen, in a vertical line, the upper and lower being balls and the middle one a cylinder. The signal flag "T" shall also be flown on the tug. A diamond shall be displayed aft on the tow.
Three shapes shall be displayed forward on the tug, in a vertical line, the upper and lower being balls and the middle one a diamond.
A diamond shape, where it can best be seen shall be displayed on the tug and the tow. Three shapes shall also be displayed in a vertical line, the upper and lower being balls and the middle one a diamond. Diamond shape
Are all independent tanks self-supported?
Non cargo tanks are self-supported
Only independent tank type C is self-supported
Only spherical tank and cylindrical tanks are self-supported
All independent tanks are self-supported
If a vessel is fitted with “free flow system”, what does it mean?
That the cargo is free flowing in all tanks at all times.
A vessel without ordinary bottom lines where the cargo flows from tank to tank through bulkhead valves.
The vessel is not equipped with own discharging equipment.
That the vessel is only able to load on gravity.
When is the parallel sweep search used?
When searching large area
When searching during night
When searching in rough weather
When searching over small area
Which of the below structures of bulk carriers are considered critical?
Forecastle deck
Upper and lower connection of main side frames
Longitudinal deck plating outside hatches
The girders
What danger is associated with loaded container tractors passing over large fittings on the loading ramp or on the vessel’s decks?
Damage to the container cargo
The container jumping the trailer
Damage to the ship’s fittings
Damage to the trailer tyres
When is it good practice to check the pressure-vacuum valves?
After cargo transfer operations
Prior to cargo transfer
Before the next dry-docking
During cargo transfer operations
On the figure 4 possible definitions of the term "CAPSTAN" are given. Which one is the correct one?
Capstan is given by C on the figure
Capstan is given by D on the figure
Capstan is given by B on the figure
Capstan is given by A on the figure
In the charts, objects are sometimes marked "Racon". What is that?
A radioconnection buoy or lighthouse.
A buoy or a lighthouse which is activated by a ship's radar, and indicate this by a marker on the radar.
A buoy or a lighthouse for direction findings by radiobearings.
A buoy or a lighthouse which constantly send radar signals to the ship.
Quick closing devices operable from upper deck outside the engine room, are provided for all fuel valves connected to the fuel tanks in the engine room.The function of the quick closing devices are checked being in functioning condition during Safety Equipment survey. Would it be advisable to have these safety functions frequently tested?
Checking every renewal of Safety Equipment Certificate (2 years) is sufficient.
Yes, the quick closing devices shall be tested and maintained frequently to ensure proper function in case of fire in the engine room.
No, if the quick closing devices are closed the engines will stop.
Checking once a year is sufficient.
You are starting to get low on water in the lifeboat. What should you do?
Mix sea water with 50% fresh water
Collect rain water
Drink urine
Use sea water
What kind of foot wear should be used when working on deck and in the engine room?
Tennis shoes
Rubber boots
Safety shoes or safety boots
Sandals or plimsolls
What is the maximum volume percent oxygen we can have on the inert gas for consume on a gas carrier?
Maximum volume percent oxygen shall be the same as LEL for actual cargo
Maximum volume percent oxygen shall not exceed 1 percent
Maximum volume percent oxygen must not exceed 5 percent
Maximum volume percent oxygen shall not exceed 10,8 percent
Данный онлайн-тест состоит из 90 случайных вопросов из тестов CES 5.1 по выбранной вами тематике.