Головна Онлайн-тести CES Oil tanker Deck Support Test online CES 5.1 for Deck department, Support level, Oil tanker vessel

Онлайн-тестування: Test online CES 5.1 for Deck department, Support level, Oil tanker vessel

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Тест складається із випадкових питань з обраної теми.

Питання 1 з 90

*Monoammonium phosphate used as a dry powder can be effective on:

solid, liquid, gases and metals

metals

solid, liquids and gases

liquid and gases

With an Inmarsat-C installation there is the addressing-option “special”. Via this option:

you can send a message by express delivery

Don't know

give one of Inmarsat’s “special accesscodes”

you can deliver a message via a special telegram

When a DSC-message of the ‘distress’ category is received, in order to start distress alert communication in so far as not indicated in the alert, you will switch to VHF channel:

You are duty officer on board a vessel in open sea. The look out is doing work and you are alone on the bridge, presently checking the position in the chartroom. Suddenly you are colliding with a fishing vessel. You will be most to blame for the collision, because of:

You should ask over VHF if there is any vessels in the surronding waters before going to the chart room.

You shall always give the "keep away" signal when doing chart work.

The fishing vessel should have kept away and you will not be blamed.

You did not maintain a proper look - out by all available means.

If you are called upon to reeve a new wire onto a self-stowing winch drum you would, after looking at brake arrangement, reeve it to pay out as follows:

Depends on the lay of the wire strands

Direction B

Direction A

Doesn-t matter which direction

What are the advantages of having mooring wires stowed on self-stowing "split drum" winches?

Increased brake holding capacity due to the ability to keep the paid out wire in a single layer on the drum

Less chance of the wire becoming jammed on the reel

All the listed alternatives answers

No crushing of the wires

What would be the correct definition of the term "Squat"?

Squat is the reduction of underkeel clearance due to increase of water flow under the keel and an increase in the water pressure

Squat is the reduction of underkeel clearance of a ship when it moves through shallow water due to a reduction in water pressure.

Squat is the loss of effectiveness of the rudder and propeller as a ship moves through shallow water due to the reduction of water pressure.

Squat is the reduction of underkeel clearance and the possible change of trim of a ship when it moves through shallow water due to a reduction in water pressure.

You are going to leave a crowded anchorage and make a 180 degrees turn. Your ship has a right-handed propeller and you can turn either way. How can you make the turn using as little space as possible?

Full ahead, rudder hard to starboard

Rudder hard to stb. , full ahead. Rudder hard to port, full astern. Repeating this manoeuvre until you have made the turn

Rudder hard to port, full astern. After you gain some sternway, rudder hard to starboard and full ahead

Full ahead, rudder hard to port

If the OOW must leave the voyage plan, he should?

Inform the master

Check the new plan

No special action necessary

Make a note in the log book

You are the Sen.Off.Deck of a vessel involved in a collision. All necessary actions to ensure safety of crew and vessel has been taken. What shall you then tell the Sen.Off.Deck on the other vessel?

Don-t talk to the Sen.Off.Deck on the other vessel at all.

Name and Port of registry of your vessel.

That you are sorry for the collision.

Check with the pilot, or any witnesses, about their consideration of whom to blame for the collision.

What is the correct initial firing procedure to be adopted when bringing a main steam boiler up to pressure from cold condition?

Start the firing on maximum rate and raise the pressure in as short a period as possible, to save energy.

Start the firing on minimum rate and alternate with maximum rate continuously firing until the boiler is up to pressure.

Start the firing on minimum rate and continuously fire until boiler is up to pressure.

Start with intermittent firing, using small firing periods and long intervals gradually building up to longer firing periods and shorter intervals until steam pressure starts to rise.

Emergency instructions in appropriate languages shall be posted in passenger cabins. Which information shall as a minimum be included in the emergency instructions?

The method of donning life-jackets, escape routes and alarm signals

Name of cabin attendant

Escape routes and alarm signals

Where to find thermal protective aids

The IGC code gives details of construction and equipment requirements for liquefied gas carriers. Under which circumstances would a liquefied gas carrier require a double bottom and a longitudinal bulkhead forming full side ballast tanks in way of the cargo containment system?

Only when the cargo is carried at less than minus 10 degree C.

Only if the cargo tanks are designed for fully refrigerated LPG cargoes.

Only when the cargo is carried at temperatures below minus 55 degree C in cargo tanks without a secondary barrier.

Only when the cargo is carried at temperatures below minus 55 degrees C in cargo tanks with a secondary barrier.

What would be a correct form of response to the question: What is the weather in your position?

The correct form of response would be: "The weather is fine"

The correct form of response would be: Wind northwesterly, force 5; visibility good; moderate sea and swell

The correct form of response would be: "The weather is satisfactory"

The correct form of response would be: "The weather is bad"

In a series installation of a purifier and a clarifier, what is the purpose of the clarifier

As a safety net, for improved cleaning of the fuel oil

You will probably have less alarms

In case the gravity disc is too small

To get round the problem of fluctuating temperature

What are the more likely causes of damage to the cargo holds internal structure on a General Cargo vessel?

Damage may be caused by fork lift truck operations and loading/discharge of heavy cargo

Water entering hold in bad weather

Leakage of small amounts of cargo from drums

Lightweight cargo being loaded on top of heavy cargo units

When discharging dirty ballast from an oil tanker at a high flow rate with main cargo pumps, the limiting factor on permitted overboard discharge is the instantaneous rate of discharge of oil. Which of the following formulae is used to calculate this rate?

Instantaneous rate of discharge (l/nm) = oil content (ppm) x flow rate (m3/h) / speed (knots) x 1,000

Instantaneous rate of discharge (l/nm) = oil content (ppm) x 1,000 / flow rate (l/h) x speed (knots)

Instantaneous rate of discharge (l/h) = oil content (ppm) x flow rate (l/h) / speed (knots) x 10,000

Instantaneous rate of discharge (ml/nm) = oil content (ml/nm) x flow rate (l/m) / speed (knots) x 100

The temperature of a refrigerated cargo is controlled by the temperature of the air being blown through the cargo hold which is often referred to as the DAT. What does the term DAT stand for?

Deviation Air Temperature.

Digital Air Temperature.

Delivered Atmosphere Temperature.

Delivery Air Temperature.

In terms of instrumentation and measurement, what is an I/P Transducer?

A transducer that converts a known electric current to a pressure proportional to the current.

A transducer that increases a pressure signal which is too low to give the desired effect.

A transducer that converts a pressure to a proportional electric signal.

A transducer that is inverting a pressure signal.

When should a vessel’s hatch pontoons not be lifted?

When the SWL of the gantry crane is not clearly marked

When the vessel is listed

When lighting conditions are poor

When the pontoons are to be lifted by a floating crane

On a RoRo vessel, what is the Maximum Securing Load of reusable use wire ropes?

30% of the breaking strength

40% of the breaking strength

25% of the breaking strength

Select the tool, from the options given, which would be used to produce accurately sized bolt holes in a steel flange?

A reamer.

A hole punch.

A twist drill.

A centre drill.

Wich type of compressors are used as cargo compressor onboard liquified gas carriers?

One, two and three stage piston compressors.

Piston, screw and centrifugal type compressors.

One, two and three stage screw compressors.

Oil free screw and piston compressors.

What are the main components causing the magnetic compass to require a regular evaluation and compass correction?

The change in the position of the magnetic pole causing annual changes in the variation

Permanent and induced magnetism in the ships structure

The continual changes of courses steered by the ship

Deviation and Variation

What is the typical composition of liquified natural gas, LNG?

Mainly Butane, but with small percentages of heavier hydrocarbons such as ethane, propane, methane and pentane.

Mainly Pentane, but with small percentages of heavier hydrocarbons such as ethane, propane, butane and methane.

Mainly Methane, but with small percentages of heavier hydrocarbons such as ethane, propane, butane and pentane.

Mainly Ethane, but with small percentages of heavier hydrocarbons such as methane, propane, butane and pentane.

For what purposes is nitrogen used in cargo tanks on a chemical tanker?

Cleanliness (provision of a clean atmosphere in the tank) and quantity (minimising any loss of cargo through evaporation).

Maintenance (nitrogen in the tank restricts moisture build-up and stops corrosion on the tank bulkheads).

Quality control (the nitrogen blanket ensures a uniform temperature throughout the product by stopping loss of heat at the surface).

Safety (atmosphere control) and purity (maintenance of quality of product by stopping contact with air).

Which of the following kinds of fish is the least perishable in cold storage?

Herring

Salmon

Halibut

King klip

What type of Bill of Lading covers "door to door" shipment?

A Destination Bill of Lading.

A Through Bill of Lading.

A Multi-Phase Bill of Lading.

An Ocean Bill of Lading.

What precaution is to be taken when the Engineer on Duty is entering an UMS-mode operated engine room due to an alarm or due to a scheduled routine check?

Switch the UMS selector switch to manual mode and engage the "dead man alarm"

Leave the UMS selector switch in UMS-mode

Switch the UMS selector switch to manual mode only

Any of the mentioned alternatives will meet the requirements.

What sort of information must an inhibitor certificate contain?

Inhibitor name, number of cargo tanks inhibited, duration of effectiveness of inhibitor, expected duration of sea voyage and temperature limitation qualifying the lifetime of the inhibitor

Inhibitor name, number of cargo tanks inhibited, duration of effectiveness of inhibitor, expected duration of sea voyage and date the cargo tanks are inhibited

Inhibitor name, date inhibited and expire date of the inhibitor

Inhibitor name, concentration of inhibitor, duration of effectiveness of inhibitor, expected duration of sea voyage, temperature limitation qualifying the lifetime of the inhibitor and number of cargo tanks inhibited

Which of these is not considered a method of ascertaining the watertight integrity of hatch covers?

Hose test

Chalk test

Ultrasonic test

Visual inspection

What is the most important task after carrying out any major overhaul on a diesel engine?

A thorough check inside the engine to make sure all tools and cleaning rags have been removed.

Start the engine to check the direction of rotation.

Start the auxiliary blower to ventilate the engine so that it has sufficient fresh air for starting.

Repair any damaged paint work on the engine.

Which statement is true about loading lifeboats?

Passengers with physical disabilities should go on life rafts.

Passengers with physical disabilities should go on lifeboats.

Only passengers with physical disabilities should go on lifeboats.

Passengers with physical disabilities are loaded from a floating platform.

SOLAS reg II-2 and IMO MSC.1/Circ 1321 requires that cargo pump rooms on oil tankers shall be mechanically ventilated, using non-sparking suction type fans. What is the minimum number of changes of air per hour that a ventilation system must deliver?

At least 15 per hour.

At least 30 per hour.

At least 10 per hour.

At least 20 per hour.

How can an approximate value of the initial transverse Metacentric Height (GM) be found from the Curve of Statical Stability (GZ curve)?

The value in metres from the X axis of the point where the curve changes from concave to convex shape.

Drawing a tangent to the curve through the origin and erecting a perpendicular through the angle of heel of 57.3 degrees

Drawing a tangent from the highest point of the curve to the X axis and measuring it in metres

It is impossible to establish the GM value from the curve of righting levers (GZ)

When will the Hague-Visby rules apply on a General Cargo vessel?

When animals are carried

When cargoes are carried on deck

When cargo is carried under a bill of lading

When a vessel operates under a charter party

On a General Cargo vessel, the placards and labels on containers and pallets containing dangerous goods (IMDG Cargo) must be marked with what information ?

IMO Class, UN Number

Number of individual pieces of cargo

UN number

Weight and volume

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

How would you ventilate your cargo holds when sailing from cold climate to hot climate?

No ventilation should be done?

Ventilate at intervals during the night?

Ventilate at intervals during the day?

Ventilate excessively?

Gas tankers are often fitted with fixed water spray system for fire protection purposes for deck areas, deck tanks, deck manifolds and pipelines. What is the minimum required flow rate of water per minute for horizontal and vertical surfaces to ensure adequate, uniform coverage of these areas?

100 litre/m2 per minute for horizontal surfaces and 50 litre/m2 per minute for vertical surfaces.

20 litre/m2 per minute for horizontal surfaces and 10 litre/m2 per minute for vertical surfaces.

10 litre/m2 per minute for horizontal surfaces and 4 litre/m2 per minute for vertical surfaces.

50 litre/m2 per minute for horizontal surfaces and 25 litre/m2 per minute for vertical surfaces.

During inspection of a medium speed diesel engine piston of the composite type it is found that the steel crown is loose at its connection to the alloy skirt. Further inspection reveals damage to the surfaces and evidence of metal particles where the two parts are connected. Select, from the options given, the likely cause of this type of damage.

Fatigue due to excess compression at the joint between the components.

Crushing due to over tightening of the piston crown retaining bolts.

Shear of the metal surfaces due to excessive load on the engine.

Fretting due to loss of compression at the joint between the components.

Select the option which best completes the following statement. "When carrying out repairs to damaged hatch gratings it is best to use…

…mild steel nails."

…mild steel screws."

…galvanised crosshead screws."

…galvanised nails."

What is important when checking cargo lashings on a General Cargo Vessel?

The number and extent of lashings

The tightness of all lashings

The strength of lashing materials

The type of lashing materials

What is meant by the term "keeping a proper lookout" as applied to the bridge lookout?

Keeping a visual lookout all round the vessel

Continually visually scanning the horizon all round the ship

Keeping a visual lookout all round the ship and also actively listening out for audio signals

Keeping a very visual lookout ahead and abeam of the ship

Which of the following forms of food poisoning is particularly associated with outbreaks on cruise ships?

Staphylococcal enterotoxin.

Norwalk virus

E-coli.

Salmonella enteritidis.

Which plan shows the position of the vertical and longitudinal centres of gravity for each cargo compartment of a Bulk Carrier?

Shell expansion

Line drawing

Vessel stability book

Capacity Plan

What would you do if you saw a container being damaged during loading operations?

Note the date and time of occurrence, container number and if possible take photographs

Call the duty officer

Inform the relieveing watchkeeper

Inform the master

What is "DRAUGHT", in the figure?

Draught is indicated by D, in the figure

Draught is indicated by C, in the figure

Draught is indicated by B, in the figure

Draught is indicated by A, in the figure

A positive displacement, rotary type, volumetric flow meter reads low with an error reading of 1% when used to measure flow of heavy oil and 2.5% when used to measure the flow of diesel oil. From the options given select the most likely cause of this difference in error?

The lower mass of diesel oil results in a lower reading.

The higher viscosity of the heavy oil is slowing down the rotary element in the meter.

The low lubricity of the diesel oil is increasing the friction in the rotating element and slowing the rotor down.

The meter is worn internally.

Your ship is loading at a Single Point Mooring. You are the rating on duty. Which of the following areas will you monitor continuously throughout your watch?

Forcastle head / manifolds / maindeck

Pump room / engine room / Cargo Control Room

Accommodation ladder / Radio Station / Poopdeck

Bridge / Cargo Control Room / Poopdeck

A bilge strainer is blocking up during bilge pumping operations which is causing delays as the pump frequently loses suction and has to be primed. What action should be taken to remedy the situation?

Remove the strainer plate and drill larger holes in it and replace it in the housing to avoid blockages.

Clean the strainer more frequently and clean out the bilge well at the first opportunity.

Remove the strainer plate from the housing to avoid blockage and loss of suction.

Use a portable pump to avoid blockage of the strainer.

The temperature control for a hot water system is very erratic with the temperature gradually rising and then suddenly falling and vice versa even though system demand is fairly constant. Which of the options given is the most likely cause of this problem?

Control air pressure supply is too low.

Control valve actuator diaphragm is ruptured.

Controller integral action reset time is too fast.

Control valve gland is over tightened.

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

When would you not expect large roll amplitudes on a Panamax container ship?

When the ship is experiencing near head seas.

When the ship is experiencing seas 45? on the bow.

When the ship is running before the seas

When the ship is experiencing beam seas

Who must make and sign the individual entry for a loading, discharging or cleaning operation in the Cargo Record Book?

The officer (or officers) in charge of that operation.

The Officer of the Watch at the commencement of that operation.

The pupman or other crewmember assigned to carry out that operation.

The master of the ship.

This figure shows a transformer, with two windings, N(1) = 2000 and N(2) = 1000 turns, on a common magnetic circuit. Assume that there is no energy loss in the transformer itself. Calculate the current I(2) when the current I(1) = 2 A.

I(2) = 8 A

I(2) = 2 A

I(2) = 1 A

I(2) = 4 A

During inspection of the 'tween deck space of a reefer vessel it is observed that there is a gas tight seal fitted to the lids at the floor of the space. Which of the assumptions given in the options can be correctly made about the 'tween deck space, based on this observation?

It is separate from the space above.

It is separate from the space below.

It is common with the space below.

It is common with all spaces in the hatch.

What is a "bouquet garni"?

A type of cocktail.

A bunch or sachet of herbs used to add flavour during cooking.

A bunch of flowers to add a pleasant smell to the galley.

A French dressing, added to meat after serving.

If a fuel oil cargo is treated with an anti-static additive, how does this affect its conductivity characteristics?

It becomes an accumulator of static charge.

It becomes mildly magnetic for a time.

Its relaxation time after loading is extended.

It becomes a non-accumulator of static charge.

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

Why are many machinery components onboard ship now tightened using cylindrical jacks and hydraulic oil pressure rather than more traditional methods such as, for example, the use of torque wrenches?

Hydraulic tightening avoids the risk of unwanted bending stresses when compared to other methods.

Hydraulic tightening of fastenings is always more accurate than any other method.

It is easier to slacken off component fastenings that have been tightened hydraulically when maintenance is due.

It is possible to get the component fastenings tighter using hydraulic equipment than by using other methods.

There are a number of different designs of tanks used for the cargo containment systems for liquefied gas carriers including independent tanks. How many different types of independent tanks are there in the IMO Gas Codes?

There are three types of independent tanks; Spherical tanks, Membrane tanks and Prismatic tanks

There are three types of independent tanks, type A, B and C

There are two types of independent tanks; type 1 and 2

There is only one type of independent tanks; Spherical tanks

Which publication sets out in detail the forces that cause cargo shifting?

The Code of Safe Practice for Solid Bulk Cargoes (BC Code)

The Cargo Stowage and Security (CSS) Code

The Cargo Securing Manual (CSM)

The ship’s stability manual

A bulk cargo of Coal is to be loaded in Australia for Europe; the coal is declared as having a high moisture content (but less than the transportable moisture Limit (TML)); what must the Master ensure?

The bilges should have been sealed prior to loading

The bilges must not be pumped out

The bilges must be pumped out regularly

All cargo hold bilges are sounded daily and the amount of water logged; the bilges can then be pumped out.

What do you understand by: Bitter end?

Bitter end means: a foul taste at the end of a meal

Bitter end means: to the very last moment

Bitter end means: the toggled end of a lifeboat painter

Bitter end means: the end link of an anchor cable that is secured within the chain locker

The IBC Code prescibes certain design conditions for a cargo heating or cooling system. What does it require in respect of pressure within such a system, for any condition other than when it is empty?

That the system must be fitted with automatic control valves that will maintain the inlet pressure at not less than 0.2 bar above the return pressure.

That a higher pressure can be maintained within the system than the maximum pressure head that could be exerted by the contents of the cargo tank on that system.

That an automatic alarm is fitted to alert the operator when the pressure within the system drops to within 0.2 bar of the pressure measured at the lowest located cargo pressure sensor within the tank.

That a lower pressure will be maintained within the system than the actual pressure head that is being exerted by the contents of the cargo tank on that system.

Why do we use stabilizers?

To increase the intact stability

To decrease the dynamic stability

To adjust the trim of the vessel

To decrease the rolling angle of the vessel

When describing Crude Oil Washing on an oil tanker, what name is given to areas within a cargo tank that are not directly impinged, or hit by the stream from tank washing machines?

Shadow areas

Protected areas

Deflected areas

Hidden areas

Provided it is considered safe to do so what is the best method of cleaning a cargo hold that contained grain?

Sweep the cargo holds after discharge

Hose down the cargo holds after discharge

Sweep and clean cargo holds from the top down as discharge progresses

Sweep and clean cargo holds from the top down as discharge progresses followed by a final wash

Does MARPOL apply to liquefied gas liquefied gas carriers?

Yes.

No.

Only annex IV.

Only annex V.

When should the Second Officer call the Master?

The Second Officer should call the Master whenever he sights more than three ships

The Second Officer should call the Master just before breakfast

The Second Officer should call the Master thirty minutes prior to the vessel's arrival at the pilot station

The Second Officer should call the Master whenever anything unusual happens during his watch or whever he is in doubt, regarding the COLREGs

As per SOLAS a fast rescue boats shall be capable of:

Manoeuvring for at least 8 hrs at a speed of 10 knots

Manoeuvring for at least 4 hrs at a speed of 20 knots in calm water

Manoeuvring for at least 4 hrs at a speed of 8 knots

Manoeuvring for at least 4 hrs at a speed of 4 knots

At what temperature is it recommended that frozen meat should be stored?

-45 degrees Celsius.

Between -5 and -10 degrees Celsius.

-20 degrees Celsius.

0degrees Celsius.

Which of the following statements is incorrect with regard to preparing the cargo holds for receiving bagged cargoes?

Cargo holds should be free of infestation

Dunnage is not required

Cargo holds should be clean

Cargo holds should be free of cargo residues

For a container stowed in a position equidistant from the roll and pitch axes of a ship, what will quarter the acceleration forces acting on it?

Halving the pitch period

Doubling the pitch period

Halving the roll period

Doubling the roll period

The gyro compass can suffer from a compass error and may need to be allowed for, when steering a course in a dangerous navigational area. What is the probable cause of the error?

Compass Deviation

Variation

An uncorrected course and speed error.

Fluctuations in the electrical supply to the compass.

Which Code applies to the design, construction, equipment and operation of ships certified to carry Noxious Liquid Substances in bulk constructed on or after 1st July 1986?

The International Ship Construction (Noxious Liquid Substances in bulk) Regulations.

The Bulk Chemical Code (the BCH Code).

MARPOL 73/78.

The International Bulk Chemical Code (the IBC Code).

What is the minimum MARVS on a fully pressurised liquefied gas carrier?

Not be less than 7 bar.

Not less than the gauge vapour pressure of the cargo at 45 degrees C.

Not less than the gauge vapour pressure of the cargo at 0 degrees C

Not less than 0.7 bar.

What should be done prior to loading structural steel products on a General Cargo Vessel?

Dunnage of 7.5cm x 7.5cm cross section should be laid athwartships over the tank top about 3m apart

Dunnage should be laid fore and aft over the tank top

16mm wire cables should be laid athwartships over the tank top about 3m apart

16mm wire cables should be laid fore and aft over the tank top about 3m apart

Special "additives" are sometimes blended with, or added to, chemical cargoes to prevent polymerisation, decomposition or oxydation while they are in the ship's tank on a long voyage. What general term is given to these additives?

Inhibitors.

Preventors.

Activators.

Limiters.

According to the IAMSAR Manual, what is the expected survival time for a person in water of 4-10 degrees Celsius, without special protective clothing?

Less than 12 hours.

Less than 3 hours.

Less than 1 hour.

Less than 6 hours.

What do you understand by the term "luffing"?

The raising or lowering of a crane jib, moving the head of the crane and therefore a suspended load horizontally towards or away from the crane.

The combined movement of hoisting a load and slewing the crane, employed when lifting a load from a dockside over and into a ship's hold, or vica versa.

The initial phase of hoisting a load, where the crane wire and structure takes the weight of a suspended load.

The rotating of a ship's jib in a circular movement about the crane.

What ensures the safe operation of twistlocks?

The spring holding the twistlock cone in the ‘neutral’ position being resilient

The spring holding the twistlock cone in the ‘closed’ position being resilient

The spring in any position of the twistlock cone being stretched to its maximum limit

The spring holding the twistlock cone in the ‘open’ position being resilient

With regard to raised deck sockets what must be ensured prior to commencing cargo operations?

They must be ready to secure the turnbuckles

They must be free of internal debris

They must be well painted

They must be clean

If you have to carry out hot work close to a smoke detector in the engine room, what precautions should be taken?

Notify Master, Deck officer and engineer in charge.The loop for the smoke detector to be switched off and take normal precautions for hot work.

Notify deck officer in charge that a fire alarm may occur.

No special precautions except for having a watch man and a fire extinguisher available.

Disconnect or cover up the smoke detector.

When talking about cargo operations on an oil tanker, what is "topping off"?

Commencing discharge from another tank, to retain suction, when stripping a tank

Completing the loading of a tank to the required ullage

Filling a cargo tank to its maximum level without causing an overflow

Slow pumping a cargo tank at the commencement of discharge, to achieve a safe ullage, before starting discharge from other tanks

Why must inert gas from a combustion-type generator never be used when preparing cargo tanks for ammonia?

Because of the high oxygen content in inert gas.

Because ammonia reacts with the carbon dioxide in inert gas.

Because of the high water content in inert gas.

Because of the high temperature in inert gas.

A reefer vessel, which is about to carry a palletised cargo, has to have available sufficient cargo equipment including air bags (dunnage bags), air lines and valves, cargo slings, wooden dunnage, nails, etc. These items are required to ensure a quick loading operation and a successful passage. Complete the following statement from the options given. "Air bags are particularly important in that ….

… they are quick and easy to deploy."

… they secure the pallets against movement during the passage."

… they protect the pillars and the vent trunking against damage during heavy weather."

… they reduce the movement of the pallets and prevent short circuiting of the air flow."

What would be considered as an acceptable range for the p-alkalinity in a low pressure auxiliary boiler?

0- 100 ppm CaCO3.

300 - 600 ppm CaCO3.

600 - 1000 ppm CaCO3.

100 - 300 ppm CaCO3.

Passenger ships shall either carry automatically self-righting liferafts or canopied reversible liferafts. What does it mean that a liferaft is automatically self-righting?

The liferaft will automatically turn back into an upright position when it is fully loaded with people

One person can manage to turn the liferaft back into an upright position

It means the same as self-righting lifeboats

The liferaft will automatically turn back into an upright position when it is empty of people

Даний онлайн-тест складається з 90 випадкових питань із тестів CES 5.1 з обраної вами тематики.