家在线测试 CES Oil tanker 2nd-Off / 3rd-Off Test online CES 5.1 for 2nd-Off / 3rd-Off, Oil tanker vessel

在线测试： Test online CES 5.1 for 2nd-Off / 3rd-Off, Oil tanker vessel

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该测试由有关选定主题的随机问题组成。

问题 1 从 90

Which one of the following is a limitation on the use of chemical powders?

In some cases they may cause a violent reaction on combustible metals such as sodium

Some of them may give off NH3

All the below mentioned alternatives

They may put an insulating deposit on electronic equipment

What is the necessary precautions to prevent sootfire in the exhaust boiler?

All the mentioned alternatives.

Hose down the smoke side with regular interval.

Clean smoke side regularly with soot blower equipment.

Clean the smoke side with chemicals.

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

Which activity will have the greatest fire-fighting effect in case of a fire?

All possible fire-fighting equipment is brought to the scene

Call the Chief Officer

All fire-fighting teams are organized as soon as possible

Extinguishing attempt is started immediately

The good operation in any location, whether the NAVTEX is working properly or not, can be checked using:

A company test procedure

Test transmissions specially broadcast for this purpose once a week

A compulsory built-in alarm for defects

A testing program built in for this purpose

If you are required to splice an eye on a mooring wire (using the recommended 5 full tucks and 2 half tucks) the effective breaking strength of the wire will now be affected by the splice, and you would expect:

A reduction in strength of 30 % to 40 %.

A reduction in strength of 1% to 5%.

A reduction in strength of 10 % to 15 %.

No reduction in strength.

The positions of the ship provided by the GPS should always be confirmed by other means, when possible. Which of the following suggested methods would be the most accurate?

The ranges of three distinctive shore objects on the radar.

Bearing using the Radio Direction Finding of three radio beacons

Bearing and distance from a navigational Buoy

Compass bearings of three shore objects

*What is the minimum length of the buoyant lifeline that is fitted to a lifebuoy which is stowed at a distance of 10 metres above the waterline (light condition)?

10 metres

15 metres

30 metres

20 metres

Which one of the listed items has to be included in a distress message?

Last port of call.

Destination.

Weather in immediate vincinity.

Identification of the ship.

Give the meaning of the following symbol:

immersion suit

lifejacket

child's lifejacket

waterproof protection

A lifejacket must not sustain burning or continue melting after being totally enveloped in a fire for a period of:

20 sec

10 sec

2 sec

1mn

Which of the following fittings shall be provided to all lifeboats:

permanent boarding arrangements on both sides to enable persons in the water to board the lifeboat

arrangements for providing an adequate view forward, aft, and to both sides

an electric power starting system for the propulsion engine with one rechargeable energy source

a remotely operated steering arrangement

Which one of the listed requirements regarding rigid liferafts do not correspond to present regulations? The liferaft shall have:

floor preventing the ingress of water

all entrances fitted with rigid boarding ramps for boarding the liferaft at sea

a manually controlled lamp fitted inside the liferaft

a manually controlled lamp, visible of at least 2 miles, fitted at the top of the canopy

Which one of the listed requirements regarding enclosures of totally enclosed lifeboats do not correspond to present regulation? The enclosures shall be provided with:

windows on both sides which can be closed watertight and opened for ventilation

access hatches capable of being opened and closed from both sides

arrangement for rowing

access hatches which can be closed watertight

*Give the meaning of the following symbol

Lower lifeboat to water

Lower rescue boat to water

Lifeboat

Rescue boat

In which way shall a survivor be hauled out of the sea?

In 45 degree angle

Horizontal

Vertical

None of the above

One of the checks during the annual Class survey of the UMS functions is focusing on cleanliness of the engine room. What is the reason for such a check ?

To reduce the general risk of fire in an unmanned engine room.

To have the engine room looking tidy.

To prevent risk of pollution.

To avoid frequent alarms.

During test and/or maintenance work of the CO2 system affecting the release system, precautions to ensure that the gas is not released into the engine room due to a mistake are to be ensured. What precautions should be taken?

No special precautions necessary.

Arrange a watchman in the CO2 central.

Check the main valve for a potential leakage.

The main supply line to be blanked off prior to the work.

Breathing apparatuses is an important piece of equipment for being able to fight a fire onboard a vessel. What routine precautions to be observed with regard to use and maintenance of such equipment?

That personnel having a beard are not selected as smoke divers.

All the mentioned alternatives.

That the equipment always to be kept cleaned,checked and bottles are recharged immediately upon use, and frequently inspected.

That personnel that are appointed as smoke divers, primarily are given a shore based proper basic education and training.

The training manual shall contain instructions and information in easily understood terms and illustrated wherever possible. Which of the following objects do not have to be explained in detail in the manual according to present regulations?

Method and use of devices for protection in launching areas

Method of launching from inside survival craft

Release from launching applications

Use of breathing apparatus

What is understood by the term "take the helm"?

Change the place where the lookout is standing.

Take over heaving of a rope.

Take over the steering of the ship.

Take a message to another officer.

What is the MARPOL definition of a "high-viscosity substance"?

A noxious liquid substance in category "Y" with a viscosity equal to or greater than 100 mPa.s at 37.8 degrees Celsius.

Any noxious liquid substance, the residues of which cannot be stripped from a cargo compartment and its associated piping and pumping system to equal to or less than 75 litres.

A noxious liquid substance of any category with a pour point of greater than 37.8 degrees Celsius.

A noxious liquid substance in category "X" or "Y" with a viscosity equal to or greater than 50 mPa.s at the unloading temperature.

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

Why do blunt knives cause accidents?

Because they will need to be held at a more shallow angle when cutting.

Because the blunt edge will contain grease particles.

Because they require more pressure to be used and are more likely to slip.

Because the handles are more likely to be loose.

Fluctuation of high temperatures in a boiler furnace can lead to refractory lining failure in which the surface of the firebrick breaks away in layers. What is the term used to describe this type of failure.for this?

Spalling

Slipping

Shrinking

Slagging

Ethylene is normally carried on fully refrigerated liquefied gas carriers at its atmospheric boiling point. What is the approximate atmospheric boiling point of ethylene?

Minus 162 degrees C

Minus 48 degrees C

Minus 104 degrees C

Minus 10 degrees C

You have recently discharged a cargo of Isoprene and the tank has now been cleaned. There is still a strong smell of Isoprene vapour from deck. Can you save some time and use a mask fitted with an "Inorganic Gases and Vapours" filter to enter the tank for mopping and inspection?

No. Filter masks are not permitted for enclosed space entry where the oxygen content of the atmosphere may be insufficient to sustain life.

No. Entry into a tank which previously contained Isoprene requires the use of a filter for "Organic Gases and Vapours".

Yes.

Yes, provided mechanical ventilation continues whilst you are inside the tank.

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)

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

What is the substance added to a dough mixture to make it rise, during the baking of bread?

Feast.

Fungus.

Yeast.

Geest.

Sounding pipes in the engine room are normally fitted with deadweight cocks and screw caps. Which of the following statements is correct?

Caps and cocks should be closed at all times, except when sounding tanks, to prevent ingress of water or oil into the engine room in case of tank bottom damage or overflow.

Deadweight cocks should be fastened in the open position to save time when sounding the tanks.

It does not matter where the cocks/caps are unless the tank is in use.

Caps should be placed on top of sounding pipes to keep the engine room tidy.

What is the influence of the I (integration) function of a controller

It will slow down the control system

Very quick control

Easy to change set-point

It will try to reduce the deviation between set-point and process value

Semi-pressurised liquefied gas carriers are often fitted with direct, single stage reliquefaction plants for cooling the cargo and dealing with boil off vapours. What cooling medium is usually used in the condenser to condense the cargo vapours for this type of system?

Fresh water.

Sea water.

Refrigerant gas.

Air.

What would result from contact with liquid ammonia?

Unconciousness

Loss of memory

Death

Loss of eyesight

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

On a General Cargo Vessel, which of the following statements are correct?

Under the Hague-Visby rules there is an obligation to make a vessel seaworthy

Under the Hague rules there is an obligation to make a vessel seaworthy

Under the Hague and Hague-Visby rules a ship-owner must exercise due diligence to make a vessel seaworthy

Under the Hague and Hague-Visby rules a vessel must be seaworthy at the commencement of a voyage

Some liquefied gas cargoes have an inhibitor added to them. What is the main reason for adding an inhibitor to the cargo?

To prevent cargo leakage from the cargo tank.

To prevent the cargo from heating up too quickly.

To prevent a flammable atmosphere forming in the vapour space.

To prevent or slow down the rate of an unwanted chemical reaction.

On a RoRo vessel, what additional securing arrangements should be used when loading a vehicle on an incline or fixed Ramp

Double the normal lashings should be used

None

The Vehicle should also be chocked under its wheels

What is the reason for gassing up cargo tanks before loading?

Cooling down cargo tanks.

Removal of inert gas from cargo tanks.

Reduce CO2 content in cargo tanks.

Decrease oxygen content in cargo tanks.

What would it imply if at the discharge port cargo was found contaminated by a previous cargo?

That cargo interests will refuse to accept the cargo

That the vessel was unseaworthy when the voyage commenced

That the vessel will be arrested by cargo interests

That the vessel will be detained by port state control

Which of the suggested navigational systems is a "Hyperbolic" navigational system and has hyperbolae as position lines?

Loran C

Radio Direction Finder

All of the suggested systems

GPS

During the hose testing of hatch covers what is the maximum distance from which a jet of water must be directed onto each part of every hatch cover joint?

1.5m

1.8m

2.0m

0.5m

Your vessel is entering a tropical area and high humidity is expected. To avoid condensation in the main engine's air cooler, it is recommended to:

Decrease the air temperature so proper draining can be achieved from the air cooler

Increase scavenging air temperature to above dew point

Reduce speed.

Operate the engine with slightly open drain cocks, scavenging to get rid of the water

What do international and national maritime authorities say about passenger list?

All passengers onboard must be registered with name, age and cabin number.

No requirement to have passenger list onboard as long as shore terminal/office have one, and can send it to the ship on request.

Optional for each company if they want to have passenger and crew list.

All personnel onboard (crew and passengers) shall be registered in order to keep track of total number of person on board

Are membrane tanks self supporting as the independent tanks?

Membrane tanks are self-supporting only when they are loaded

Only the inner membrane is self-supporting

Membrane tanks are not self-supporting

Membrane tanks are self-supporting as the independent tanks

With reference to non-VIT diesel engine high pressure fuel pumps that have helix control, how is the timing of fuel injection normally adjusted?

By raising or lowering the pump plunger relative to the pump barrel.

By rotating the pump plunger relative to the pump barrel.

By changing the governor output signal.

By changing the opening pressure setting for the fuel injection valves.

Representative of the port authorities should always receive the best possible treatment:

For ship's clearance to take place quickly and without complications

Because the ship's trading certificate are not normally in order

Because you always have some faults in arrival/departure documents

Because you have undeclared dutiable items in excess of permitted on board

The threads on the drain plug for the bronze end cover of a sea water cooled heat exchanger have been badly damaged during maintenance. There is no spare brass plug available. What is the best solution for repairing the heat exchanger?

Use a steel plug with the same thread as the original to replace it.

Wrap the threads in thread tape and coat it with jointing compound before refitting it.

Hammer in a wooden tapered plug as a temporary repair.

Make a new brass plug on the lathe to fit the drain hole.

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

After water-washing the turbocharger exhaust side it starts to vibrate even though it was operating normally prior to the washing procedure. What is the most likely cause of this problem?

The foundation bolts for the turbocharger are loose.

The rotor blades are damaged or the blades are not properly cleaned

Water drain for washing system is blocked allowing water to build up in the turbine casing.

The turbocharger bearings are worn out.

What happens during Parametric Rolling when a wave trough is amidships?

There is a reduction in righting levers

There is loss of GM

There is an increase in righting levers

There is a likelihood of the ship rolling violently

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

A 2 term controller is used to control the fuel oil temperature for a thermal oil system used for heating services. The control is very unstable with the measured value hunting constantly. Select the most probable cause of this problem from the options given.

Integral action reset time is set too slow.

Proportional band width is set too wide.

Proportional band width is set too narrow.

Integral action reset time is set too fast.

The diagram shows the lead of a rope during mooring operations and the possible point where it may break. Where would be considered the safest place to be standing?

Outside the coloured zone.

Between the "point of break" and the "point of restraint".

It is impossible to stand clear of any possible danger areas surrounding wires or ropes and therefore there are not any safe areas.

Inside the coloured zone and behind the "point of restraint".

When unloading a generator, it is necessary to gradually decrease the load in order to avoid:

Undue overcurrent

Undue overload on the switchboard.

Undue overspeeding.

Undue temperature rise.

Can unrestricted tank cleaning operations take place from a chemical tanker in any sea area? Read all the following statements carefully and consider the reasons behind the answers as shown.

No. The type of previous cargo, the amount of residues, the ship's speed, the distance from the nearest land, the depth of water and whether the ship is in a "special" sea area are all factors that will need to be considered before tank cleaning is permitted.

No. Certain countries have exercised territorial rights over extended sea areas and control all marine activity within them, including the disposal of tank washings from tankers.

Yes. The tank cleaning equipment typically fitted on modern chemical tankers guarantees that legal dilution rates are achieved and that there is no threat to the marine environment in any location.

Yes, but only if the ship has undergone a special opetrational survey and is certified for unrestricted tank cleaning operations by the IMO.

Is it required to have supplementary emergency lighting on board ro-ro ships?

No, reflective marking indicates the escape routes

No, portable battery operated lamps shall be provided in alleyways and public spaces

Yes, all passenger public spaces and alleyways shall be provided with supplementary electric lighting

No, passengers should bring their own flashlights

Some specialised vessels, mainly those involved in the carriage of fish, are capable of carriage temperatures as low as minus 60 degree Celsius. From the options given select the one that best describes why such low temperatures are used.

At minus 62 degrees Celsius the eutectic point is reached and all water in the cells is frozen.

Longer transport times are possible and hence less powerful vessels are required.

Higher charter rates can be achieved.

Quick temperature reduction is possible.

Which of the given options is the approximate value of the flammable range for Methane measured as a percentage volume in air?

5.3 - 14.0% by volume.

2.6 - 12.4% by volume.

3.5 - 13.0% by volume

1.4 - 10.8% by volume

A bulk cargo has a stowage factor (S.F) of 1.50 cubic metres per metric tonne (m3/mt). If 1000 tonnes are to be loaded what volume will this cargo occupy?

1500 cubic metres ( m3)

1000 cubic metres

15000 cubic metres (m3)

3000 tonnes

When can a vessel load concentrates whose moisture content exceeds the Transportable Moisture Limit?

When proved to an Administration that there is adequate stability

When the distance to the next port is less than 200nm

When proved to an Administration that there is adequate structural integrity

When proved to an Administration that there is adequate stability as well as structural integrity

The superstructure and deck houses of passenger ships carrying more than 36 passengers shall be divided into main vertical zones by

Class "C" division

Class "A" division

Class "B" division

Class "P" division

What is the maximum pressure that the safety valve on a steam boiler should be set to lift?

3% above the normal working pressure.

10% above the normal working pressure.

At the maximum design or maximum permitted working pressure of the boiler.

3% above the maximum design pressure..

"Protective discrimination" means the progressive grading of sizes or tripping times of:

Generators and motors.

Line fuses and overcurrent relays

Magnetic and thermal current transformers.

440 V and 220 V transformers.

What is the duct keel on a general cargo ship?

The duct keel is the keel plate running along the fore and aft line of the ship.

The duct keel is the keel plate on smaller ships which extends out from the hull.

The Duct Keel is the vertical access duct down from the deck to the keel plate to provide access into the double bottom.

The duct keel is a longitudinal box shaped strength member running along the centreline of the ship and through which piping etc can be placed.

What is the normal procedure for cooldown cargo tanks prior to loading LNG?

Pumping cold LNG through the spray header.

Pumping cold LNG to the bottom of the tank.

Pumping cold LNG through the heater.

Pumping cold LNG through liquid header.

What is important to keep in mind about U-profiles that are used on pipes supports?

They should only allow movement on the lateral axis.

They must not be fastened against the pipe.

They must be made of flexible material to protect against stress.

That they should be fastened tightly around the pipe.

If a boiler is smoking “white smoke” a possible cause can be

Too high fuel oil pressure

Too little combustion air

Faulty burner tip

Too much combustion air

What is the meaning of “remote mode” related to a slave controller?

The slave controller can be tuned by a hand carried remote controller

The slave controller can be in any mode of operation

The slave controller can be tuned from the engine control room

The slave controller receives the set-point from the output signal of the master controller

A cable carries a current of 1500A at 660 Volts and has a voltage drop along it's length of 30volts. Assuming the cable insulation is good enough to work at High Voltage, what would be the voltage drop when supplying the same amount of power at 6600 Volts.

0.3 Volts

300 Volts

3 Volts

30 Volts

You are going to serve boiled potatoes with the evening meal at 18:00 hours. At what time should you have the potatoes ready?

17:30 hours

17:50 hours

17:00 hours

18:15 hours

Which of the following statements is in compliance with international regulations?

The securing of cargoes must be completed before sailing

The securing of cargoes must be completed within two hours of leaving the berth

The securing of cargoes must be completed before the ship leaves the berth

The securing of cargoes may be completed at anchorage

It is the Masters responsibility to ensure that

All information reagrding the onboard training is given to the ship manager

safety equipment is not used during the training

All personnel participate in the training at the same time

concerned personnel carry out the on-board traing progamme effectively

Normally, a vessel sails in salt water and therefore salt water draughts are those which are referred to. If there is a change in density however, this must be taken into account because the true draughts of the ship will change. Which of the definitions below is that of this "Fresh Water Allowance"?

The number of millimetres by which a vessel's True Mean Draught changes when she passes from salt water into a dock of a different water density.

The number of millimetres by which a vessel's True Mean Draught changes when she passes from salt water to fresh water, or vica versa.

The allowance assigned by the Classification Society when the vessel is built, to indicate the compensation that may be applied during topping off to allow for dock water density.

The number of centimetres by which a vessel's maximum draught is calculated to increase when she passes from salt water to fresh water.

In what way can de-humidified air be made more efficient for the drying of cargo tanks?

By pressurizing it.

By heating it.

By adding 10% by volume inert gas to it.

By cooling it.

An accumulation test may be necessary for a steam boiler following repairs or modifications. Which of the given options does the accumulation test check?

The capacity of the safety valve to relieve pressure.

The time taken to fill the boiler with water under steaming conditions.

The rate at which the boiler can generate steam.

The time taken for the boiler to reach operating pressure.

When should additional lashings on general cargoes be considered?

When heavy weather is anticipated for the planned voyage

When passing through the Tropical Zone in winter months

When passing through the Summer Zone in winter months

With the onset of heavy weather

On the figure 4 possible definitions of the term "UNDER KEEL CLEARANCE" are given. Which one is the correct one?

Under keel clearance is given by D on the figure

Under keel clearance is given by A on the figure

Under keel clearance is given by C on the figure

Under keel clearance is given by B on the figure

How often shall liferafts be serviced?

Decided by the safety officer

At intervals not exceeding 12 months

At intervals not exceeding 18 months

Every second year

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?

Stripping.

Purging.

Assessing.

Proving.

Settlement of disputes, not belonging to the category of the NIS Act, outside Norway between the master and any of the crew regarding wages, the ship service or the employment relationships in general shall be brought before:

The local trade union

The local P&I club.

The Norwegian Consulate

The local authorities

Which oxygen content shall we measure before entering a tank or space after venting?

The oxygen content shall be measured to 10,8% by volume

The oxygen content shall be measured to minimum 19% by volume

The oxygen content shall be measured to 21% by volume

We don’t need to measure the oxygen content

A cofferdam, a pumproom or an empty tank, located between cargo tanks containing cargoes or cargo residues which might react with each other in a hazardous manner, are all acceptable methods of segregation in chemical tanker stowage according to the IBC Code. Which of the following is also acceptable for this purpose?

A cruciform joint, separating two tanks diagonally.

A common bulkhead, provided it is at least 10 mm thick.

An intervening cargo tank containing a mutually compatible cargo or cargo residues.

A common bulkhead, provided it overlaps for less than 15% of the length of the bulkhead on the larger tank.

Why are accommodation spaces separated from the remainder of the ship by thermal and structural boundaries?

Don't know

To increase effectiveness of the air-conditioning in the accommodation

To provide means of escape for the passenger and crew

So that passengers can stay in the accommodation in case of fire in the engine room

On a Container vessel, with regard to raised deck sockets, what must be ensured prior to commencing cargo operations?

They must be clean and free of internal debris

They must be greased

They must be ready to secure the turnbuckles

They must be well painted

On a RoRo vessel, what is the Maximum Securing Load of mild steel shackles?

35% of the breaking strength

40% of the breaking strength

50% of the breaking strength

25% of the breaking strength

What, by definition in the International Collision Regulations, is a "vessel restricted in her ability to manoeuvre"?

A vessel which through some exceptional circumstance is unable to manoeuvre as required by the Rules and is therefore unable to keep out of the way of another vessel.

A vessel which from the nature of her work is restricted in her ability to manoeuvre as required by the Rules and is therefore unable to keep out of the way of another vessel.

A vessel engaged in underwater work, such as the laying, picking up or servicing of a pipeline, or which is in support of diving operations, performing dredging and mine-clearance or is deploying or recovering a pilot.

A vessel which because of her draught in relation to the available depth of navigable water is restricted in her ability to deviate from her course and keep out of the way of another vessel.

How do you express the accuracy of an instrument

In % of full scale and to least significant digit

In % of gauge readings and to least significant digit

In % of deviation and to least significant digit

In % of range and to least significant digit

A cargo of frozen chicken is being presented for loading into a conventional reefer vessel. Which of the options given is the most appropriate packaging method that should be used for such a cargo?

It should be wrapped in plastic and stowed loose.

It should be packed in cardboard cartons.

It should be packed in wooden cases.

It should be packed in plastic sacks.

Carbon is the element that naturally forms most natural chemical compounds. In natural conditions there are only two different carbon elements, which ones?

Diamond and graphite.

Graphite and butane.

Hydrogen and butane.

Graphite and hydrogen.

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。