Главная Онлайн-тесты CES Chemical tanker 2nd-Off / 3rd-Off Онлайн-тест CES 5.1 для 2nd-Off / 3rd-Off, Chemical tanker vessel

Онлайн-тестирование: Онлайн-тест CES 5.1 для 2nd-Off / 3rd-Off, Chemical tanker vessel

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Тест состоит из случайных вопросов по выбранной теме.

Вопрос 1 из 90

The hydrostatic release unit used in the float-free arrangements will automatically release the liferaft at a depth of not more than:

4 m

8,50 m

2,50 m

You are leading a team fighting an interior fire. If you see the colour of the smoke changing from dark black to grey, what is the most probable reason for that change?

the team has started to ventilate

the percentage of oxygen is getting below 15%

The team is applying water and the temperature is decreasing

the temperature inside is increasing

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

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

Notify Master, Deck officer and Engineer in charge.The loop for this special sensor to be switched off and take normal precautions for hot work.

Disconnect the smoke detector.

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

The duty engineer of a UMS ship is approached by a member of the ship's staff, seeking permission to hang wet working clothes in the engine room to dry. Should he:

Allow the clothes to be hung over a rail provided there is no electrical equipment directly below

Allow the clothes to be hung over rail next to the warm F.O. service tanks

Allow the clothes to be hung over a rail anywhere

Not allow the clothes to be hung anywhere in the unmanned machinery spaces

If you detect a fire on board the ship, dependent on the situation, which of the following actions is the first to be taken?

Call the officer on duty.

Check all nearby compartments for survivors.

Try to kill the fire immediately by use of fire-extinguishers or other adequate appliances.

Raise the fire alarm.

A vessel where the engine personnel are in charge of all technical installations on board are due for a voyage to a cold climate area. Are any special precautions to be implemented with regard to fireline/pumps and use of same?

Implement special routines for starting fire pumps (e.g. local start/stop operation) to avoid the pumps are started due by a mistake, resulting in filling up the system unnecessarily.

All the mentioned alternatives.

Instruct the personnel in routines to prepare the fireline system, e.g. closing all branches and the consequences of not draining the system after use.

Drain all firelines in areas that may be exposed to freezing temperature.

*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?

Three short blasts followed by three long blasts, then followed by three short blasts on the ship's whistle and alarm bells

Seven short blasts followed by one long blast on the ship's whistle and alarm bells

One long blast on the ship's whistle and alarm bells followed by seven short blasts

Intermittent signals on the ship's alarm bells

A drip tray containing oil is on fire. The only fire fighting equipment available is a water hose with single jet/spray nozzle. How, if at all, should you attempt to put out this fire using water?

Water should be applied to the oil in a single jet only

The water can be applied in a fine spray starting from the front in a sweeping motion

Water should be applied in a jet to the back of the fire

Water should not be used on any type of oil fire

The letter ‘X’ in the answer-back 36572 LIBK X means:

This vessel has more telex-numbers

This concerns a mobile station

The position of the vessel is not known

Don't know

How many tonnes can you load in a 1000 m? tank which has a filling restriction of 1.8 kg/l at 90 % filling. Product to be loaded is Sulphuric Acid, LW 1.8 at loading/voyage temperature.

1800 Mt

1600 Mt

2000 Mt

1620 Mt

What should be done after departing loading port, at intervalls during the voyage and prior to discharging port ?

Inspect the gally for sufficant food stock.

Inspect all areas surronding loaded tanks for cleanliness.

Inspect/measure all areas surronding loaded tanks for leakage. Result to be recorded in the deck log book.

Test the cargo pumps against closed valve.

OPA-90 is applicable for the following types of vessels

All vessels carrying more than 10 000 gallons of oil , irrespective whether as cargo or bunker

Tanker vessels carrying oil

Tanker vessels carrying oil or other dangerous cargo

Tanker vessels carrying oil without segregated tanks

Where is OPA-90 applicable

200 nm off US coast

Within 200 nm of US waters including Guam, Hawaii, Alaska and San Juan

200 nm off coast of California

Within US waters

Shock is a manifestation of changes in which the circulation fails because either pressure or volume of circulating blood has fallen to a dangerous level. What is the skin colour of a patient in shock?

Dark blue.

Light blue.

Pale or grey.

Green or purple.

Which of the four figures illustrated shows the correct position line for the following situation: Latitude 50°00'N, Longitude 30°00'W, Time 1200 GMT. Course steered: 090° True, Speed: 12 knots, bearing of the sun: 200°, Intercept correction: 00°02' Towards (observed altitude - computed altitude).

Figure 2 is correct.

Figure 3 is correct.

Figure 4 is correct.

Figure 1 is correct.

What is the vessel that has the local command in a rescue operation called?

Commander of Operation

Local Rescue Commander

On Scene Commander

Commander of Rescue Operation

You want to stop your ship as quickly as possible without too much change in the heading. What can you do to achieve this?

Use the rudder hard over both sides while reducing engine power, so-called "high frequency rudder cycling"

Do a zig zag manoeuvre

Put the engine full astern

Make a complete turning circle

Experience has shown that the most successful method of double banking (when no tugs used) is:

With the larger vessel stopped and drifting in the water, fig. 4.

With the smaller vessel at anchor, fig. 3.

With both vessels underway, fig. 1.

With the larger vessel at anchor, fig. 2.

Which of the following duties shall be included in the "muster list" as being assigned to crewmembers in relation to passengers ?

ensuring that extra food and water is taken to the survival craft

clearing the escape routes

assembling passengers at muster station

ensuring that every passenger is provided with an immersion suit or a thermal protective aid

An alarm signal consisting of seven short blast followed by one prolonged blast is sounded by the ship's whistle and alarm bells. What are you to do ?

report on the bridge (deck crew) or engine room (engine crew) for further orders

go to (or remain in) your cabin and await further orders

go to your fire station

go to your muster station

In a distress situation how many times, or for how long is the emergency alarm signal to be sounded ?

until it is manually turned off or is temporary interrupted by a message on the public address system

3 minutes

until the signal "risk is over" or the order "abandon ship" is given

3 times

What signal, if any, is specified in SOLAS as the "Abandon ship" signal?

Six short blasts followed by one long blast

Four long blasts

The "Abandon ship" signal is not specified, only the general emergency alarm signal is stated

Seven short blasts followed by one long blast

A person wearing lifejacket or immersion suit, shall be able to turn from a face-down to a face-up position in not more than:

15 seconds

8 seconds

5 seconds

10 seconds

What is the minimum number of immersion suits that are required to be provided for each open lifeboat under SOLAS rules?

Nil

One per person

Which item among those below is included in the normal equipment of every liferaft ?

one searchlight which can work continuously for not less than 3 hours

one waterproof electric torch suitable for Morse signalling

two painters of a length equal to not less than the distance from the stowage position of the liferaft to the waterline

one boat-hook

Which item among those below is included in the normal equipment of every lifeboat ?

an EPIRB

one life-jacket for each person

sea-charts and navigating equipment

a sea-anchor fitted with a shock-resistant hawser

*How much water per person is provided in a lifeboat not equipped with a desalting apparatus?

1litre

5 litres

3 litres

2 litres

In a distress situation how many times, or for how long is the emergency alarm signal to be sounded?

Until the signal "risk is over" or the order "abandon ship" is given.

3 times.

3 minutes.

Until all crew members and passengers have reported to their respective muster stations.

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?

Muster of assigned stations

Donning of lifejackets and immersion suits

Boarding, launching and clearing of the survival crafts and rescue boats

Donning of fire protection clothing

Which one of the following types of rope is the most dangerous to work with?

Steel wire.

Manila.

Nylon.

Polypropylene.

For how long should a tank be ventilated when people are working inside?

For as long as it is deemed necessary by the chief officer.

For at least 60 minutes.

Until the tank is gas free.

For as long as people are working in the tank.

What is meant by the atmosphere in a cargo tank being "too rich" or "too lean"?

The atmosphere will not support combustion in either situation.

The atmosphere supports combustion iif it is "too lean" but does not do so if it is "too rich".

The atmosphere supports combustion if it is "too rich" but does not do so if it is "too lean".

The atmosphere supports combustion in both situations.

In describing an oil cargo, what is its "pour point"?

The lowest temperature at which a gas converts back to liquid

The lowest temperature at which it will remain fluid

The temperature as recorded during the taking of cargo samples

The temperature necessary for a cargo to load from shore by gravity alone

Which is the preferred method for starting an air conditioning refrigeration compressor which has been shut down for a period of time?

Start with all system valves fully opened.

Start with the discharge valve throttled in to prevent excess condenser pressure.

Start with suction valve throttled in to minimise risk of drawing liquid refrigerant into the compressor.

Start and stop repeatedly until suction pressure and oil pressure are normal.

Which of the given statements can be considered as the most accurate according to the IMO Gas Codes and other LNG industry standards?

Methane is neither toxic nor an asphyxiant gas.

Methane is considered as presenting a flammable hazard and may also be an asphyxiant.

Methane is considered as presenting both flammable and toxic hazards.

Methane is considered as presenting a toxic hazard and may also result in a chemical burn in contact with the skin.

In which of the following areas of the holds of a bulk carrier is cargo residue unlikely to be concealed?

Recesses below manhole covers

Upper sections of ship's frames

Bilges

Bulkhead corrugations

What is the safe time for operating the crankcase door when oil mist alarm is activated and the engine has been stopped?

After 20 minutes

After 1 minute

After 10 minutes

After 5 minutes

Car decks on board ro-ro passenger ships are nomally closed during sea passage. Why are passengers not allowed to be on the car-deck during sailing?

Vehicles and other cargo can shift when the ship is rolling. Persons may be trapped between vehicles or cargo.

f the car decks are empty, it will be easier for the crew to locate all passengers in case of an emergency

To prevent burglary and damage to cars

In case of an emergency situation it can be difficult for passengers to escape. Vehicles, lorries, trailers and other cargo are maybe lashed and it is a substantial chance for passengers to get injured. Vehicles and other cargo might also shift when the ship is rolling.

Is it allowed to have animals on the car deck during a voyage?

Yes, if they are safely placed in a suitable vehicle

Only if the weather conditions permit

It is up to the captain to decide

When an air compressor is going to be started it is important that the compressor is started with the "blow off" valves open. Why?

To ensure that the electric motor will not have a too low torque during start.

To ensure that we do not have any water assembly in the cylinders when the compressor start.

To be sure that all pressure valves in the HP line to the starting bottle are open.

To ensure that the compressor does not have any back pressure due to a leak suction valve in stage one.

Which of the following is a summary of the features of a "controlled tank venting system" as may be found on a chemical tanker?

PV valves are fitted to limit the pressure or vacuum in the tank; no shut-off valves may be fitted either above or below the PV valves; provision may be made to by-pass the PV valves under certain operating conditions; such a system shall consist of a primary and secondary means of allowing full flow of vapour, except that the secondary system may be replaced by pressure sensors fitted within the tank.

The system permits vapour recovery via a collection manifold which may be connected to a shore reception facility.

PV valves are fitted to limit the pressure or vacuum within the tank; the PV valves shall be capable of being isolated or by-passed; the system shall be supplemented by pressure sensors within the cargo tank.

The system is fitted to a tank used for cargoes having a flash point not exceeding 60 degrees Celsius and is fitted with a device to prevent the passage of flame into the cargo tank.

What are the people probably doing in the picture?

The people are fighting a fire

The people are playing with water

The people are hosing down the cargo hold to clean it.

The people are pressure testing the hull plating

What is important with regard to checking container lashings on deck?

The strength of lashing rods

The number and extent of lashings

The strength of twistlocks

The tightness of lashing rods and container locking arrangements

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.

Why are the L.P.G. compressors of "Oil Free" type design?

To prevent contamination of the cargo.

To prevent low oil pressure during start up.

To prevent carbonising of the valves.

To prevent contamination of the lub oil.

The figure shows a cross section through a ship floating in water, with the hull in red and the seabed below the ship shaded. On the figure there are four (4) possible definitions of the term "FREEBOARD" given. Which one is the correct one?

Freeboard is given by B on the figure

Freeboard is given by C on the figure

Freeboard is given by A on the figure

Freeboard is given by D on the figure

What is the output shown on the "Rate of Turn" display fitted on the bridge?

The Rate of Turn indicator shows the rudder angle applied by the helmsman to turn the ship.

The Rate of Turn display shows the turning speed the vessel is swinging in degrees per second

The Rate of Turn indicator shows the changing angle of the vessel from the meridian

The Rate of Turn indicator displays the rate the ship is swinging in degrees per minute

Why does MARPOL require debottoming of tanks prior to COW?

To prevent electrostatic generation

In order not to mix crude and water

To prevent corrosion in COW machines and COW piping

To prevent corrosion of tanks

In the human body, breathing is controlled by

The bronchia

The respiratory centre in the brain

The lungs

Movement of heart

During maintenance work on a compensated mechanical hydraulic governor air is drawn in to the hydraulic circuit after draining and flushing out the unit. Which of the actions given in the options is most likely to assist in the removal of the air from the system?

With the governor in operation open the compensation needle valve to introduce instability and disturb the engine load to make the governor hunt.

With the governor in operation close the compensation needle valve and disturb the load to make the engine hunt.

Overfill the governor with fresh oil to force all of the air out.

Drain the governor again and slowly refill with fresh oil.

What is the first line of defence against ingress of water into a bulk carrier?

Pipe outlets

The shell plating

Machinery spaces

Hatch covers

When small amounts of cleaning additives (detergent products) are added to water in order to facilitate the washing of tanks which previously contained liquid chemicals, what conditions apply?

No conditions apply provided not more than 200 litres per 1000 cubic metres of tank volume is used in any one washing operation.

The discharge shall be governed by the provisions of Annex I or II, which would apply to the additive had it been carried as cargo. Tank washing procedures involving the use of such additives shall be set out in the Procedures and Arrangements Manual and approved by the vessel's Flag State Administration.

If the additive contains Pollution category "X" products and more than 200 litres is used in the washing operation for a single cargo tank, then a prewash to shore must be carried out.

No additives containing Pollution Category "X" components shall be used, except those components that are readily biodegradable and present in a total concentration of of less than 10% of the cleaning additive. No restrictions additional to those applicable to the tank due to the previous cargo shall apply.

What is very important to do when starting to crude oil wash?

No special precautions.

To fill up the lines slowly.

To build up pressure first.

Stop discharging and then start the whole operation slowly.

A bulk cargo is loaded and the shore cargo figure is 10 000 tonnes; the chief officer calculates 9 500 tonnes have been loaded; what should the Master do?

Bills of Lading to be signed "Clean" by Master.

Inform Designated Person Ashore( DPA)

No action to be taken

Ask for a draft survey to be carried in the presence of P& I Club representative

How is damage to the piston rod stuffing box rings avoided when removing and replacing the piston during overhaul of the piston of a large two stroke diesel engine?

A tapered guide sleeve should be fitted over the threaded end of the piston rod.

The piston rod gland should always be removed from the engine before the piston is lifted out to avoid damage to the rings.

The lower part of the piston rod is wrapped in rags.

The piston rod nut is put on during removal and refitting of the piston through the gland.

What is the denomination for API?

Long tons at 60 degrees Fahrenheit.

Metric tonnes at 60 degrees Fahrenheit.

An abbreviation of American Petroleum Institute.

Cubic metre pr. volume unit.

Will it matter to the accuracy of the measurement how you install a resistance element in a thermo-well

Will only result in mechanical problems

No influence at all

Will have a minor influence on the measurement

Wrong installation will result in a major deviation in measurement

Cargo hoses intended for liquefied gas carriers have to be prototyped tested before being approved. When new hoses of an already approved type are received onboard they also need to be pressure tested before being put into service. What are the IMO Gas Code requirements for such hoses before they are put into service?

Not less than 1.5 times the specified maximum working pressure or more than two fifths of bursting pressure at the expected cargo carriage temperature.

5 times the specified maximum working pressure at ambient temperature.

5 times the specified maximum working pressure at expected cargo carriage temperature.

Not less than 1.5 times the specified maximum working pressure or more than two fifths of bursting pressure at ambient temperature.

During maintenance work on a fuel tank the engine room ratings are removing scale in preparation for re-coating. One of the ratings suddenly notices the smell of fumes even though the atmosphere had been satisfactorily tested before the work started. What action should the ratings take?

Stop work until the smell disappears and then carry on removing the scale.

Leave the tank immediately and have the atmosphere retested.

Ask for another fan to be switched on to increase the ventilation in the tank.

Put on breathing apparatus and carry on with the task.

A general cargo ship is discharging and smoke is reported coming from a hold which is not being worked at present; what action must be taken ?

Sound general alarm, call shore fire services and check number of persons on board

Enter space to access problem

Boundary cool adjacent spaces

Open hatch cover and attack with fire hoses

Check the items that can be a possible threat

All alternatives

"Piracy, Hijacking and Smuggling"

Bombing and Sabotage

Cargo tampering and Stowaways

The bilge holding tank level is being reduced by discharging through the OWS. What action should be taken when the oil/water interface in the holding tank is reached?

Stop the OWS and pump the oil to the incinerator tank.

Stop the OWS and pump the oil to a bunker tank.

Bypass the OWS and discharge the remaining contents of the holding tank overboard.

Continue pumping the contents of the holding tank through the OWS.

Why must draught marks be read on both port and starboard sides of a bulk vessel when accurate draughts are required

The vessel marks may be incorrectly drawn

The vessel may appear up right but often will be found to have a slight list when port and starboard marks are compared

The vessel may be trimmed by the head

The draught reading on one side of the vessel sufficient

What action should be taken if the boiler water tests show that the pH-value in the boiler water is slightly over 11.5?

Blowdown the boiler and Increase the dosage of boiler water treatment chemicals.

No action is required this is the normal level.

Raise the boiler water level above normal to dilute the contents.

Blowdown the boiler and decrease the dosage of boiler water treatment chemicals.

An unconscious casualty who is breathing, should be placed

In the face up position

In the recovery position

Sitting up position

Lying face down position

When will the Longitudinal Bending Moments caused by the cargo distribution need to be taken into account on an oil tanker?

Only during loading and discharging cargo

During loading, discharging and on loaded passage

Only when on passage in heavy seas and when the vessel is pitching

All the time

At what time should lashings be released?

As soon as the weather conditions are favourable, lashings can be released.

Lashings should not be released for unloading before the ship is secured at the berth, without the Master's express permission.

The crew can release lashings prior to arrival to avoid any delays.

Lashings should be released when the ship enters enclosed waters.

If left-over cooked meat is to be re-used in another meal, which of the following precautions must be taken?

The meat must be fine chopped to ensure it re-heats to at least 70 degrees Celsius as quickly as possible; it must not be mixed with newly preared raw meat; the dish in which it is used must only be heated once.

The meat can be directly added to another dish and musdt be re-heated to the temperature required by the new recipe; it can then be re-heated for further servings provided it is refrigerated in between.

The cooked meat must have been refrigerated until required; it can be taken out, chopped and mixed thoroughly with newly cooked ingredients, to ensure it is adequately re-heated. If it cools before serving, it can be warmed through on a hot plate or under a heat lamp.

The meat must be sliced to a thickness of less than 5 mm to ensure it re-heats to at least 50 degrees Celsius during cooking; it can only be layered with other previously cooked ingredients; the dish in which it is used can be re-heated again, provided it is refrigerated between each serving.

What is the time limit for abandonment of passenger ships?

15 minutes from the time the abandon ship signal is given

There is no time limit

2 hours from the time the abandon ship signal is given

30 minutes from the time the abandon ship signal is given

Which of the following statements is incorrect with regard to IMDG Class 5 cargoes?

The goods must be stowed such that they can be easily jettisoned

The goods require protection against potential sources of ignition

The goods require protection against the accumulation of dangerous vapours

The goods require protection against contact with moisture and water

During inspection and calibration of one unit, you observe the situation shown. The conclusion is clover leafing. The main engine uses high grade TBN cylinder oil. What do you have to do in order to reduce wear?

Contact engine maker for advice.

Increase the jacket cooling water temperature to avoid the sulfur dew point

Decrease jacket cooling water temperature to avoid heat stress

Increase cylinder oil consumption to neutralize the sulfur

The ship is en route. When may passengers visit the bridge?

Whenever they want

Passengers are not allowed to visit the bridge while the ship is en route

When the weather is nice and the sea is calm

During daytime if the traffic is smooth

What do you understand by the term “Risk Assessment”, and how would this be carried out on board?

States than when work has a degree of risk that the work is not carried out

Requires a great deal of preparation and involves recording everything on paper

Identify the hazards, quantify the risks, put control measures in place, monitor the work activity and review

Identify the hazards and specify the personal protective equipment that would be required to complete the work

Temperature sensors may be marked T 802. What does this mean?

100 ohm at 20° C

20 ohm at 802° C

802 ohm at 20° C

20 ohm at 100° C

How should mild steel slabs be loaded in a bulk carrier?

Interlocked across the entire cargo hold with the longitudinal axes athwartships

Interlocked up to the hopper tank plating with the longitudinal axes athwartships

Interlocked across the entire cargo hold with the longitudinal axes fore and aft

Interlocked up to the hopper tank plating with the longitudinal axes fore and aft

How can the Master ensure that all cargo loading doors, bow visors, weathertight ramps etc. are locked and secured before the ship proceeds on any voyage?

Automatic systems will alarm you if the doors are not properly secured.

By having an effective system of supervision and reporting of the closing and opening of doors. Time of closing and opening of doors shall be entered in the log-book.

The bosun is always responsible to check the watertight integrity before the ship proceeds on any voyage.

By having experinced officers and crew to supervise the closing and opening of doors. Time of closing and opening of doors shall be entered in the log-book.

Earlier reefer vessels designed and built for liner trade usually had two or three tween decks approximately 2 to 2.5 metres in height and deep lower holds approximately 4 to 5 metres deep. Modern designs usually incorporate more decks each approximately 2.3 metres in height. What is the main reason for this fundamental design change?

The increased proportion of chilled as opposed to frozen cargoes that are carried.

There is an almost universal use of standard height pallets.

It is easier to construct vessels with shallow decks.

The increased number of container vessels has reduced the tendency to carry general cargo outbound from Europe or North America to Australia and New Zealand on reefer vessels.

What kind of cargo pumps is most common on LNG carriers?

Deepwell pumps.

Single stage deepwell pumps.

Submerges motor pumps.

Multistage deepwell pumps.

Which of the following statements is correct when discussing warm clothing and passengers?

After being mustered, passengers will return to their cabins for warm clothing.

The crew will pass out warm clothing for passengers.

Warm clothing will protect passengers from drowning.

Warm clothing will protect passengers from hypothermia.

What is the procedure if a tank lorry containing dangerous goods is not clearly marked?

As long as the driver looks ok, load the cargo

Ask the driver to write a declaration of contents and load the vehicle

Load it, usually tank lorries are not clearly marked

Refuse to load the vehicle

A 3-phase cage rotor induction motor requires protection by a time delay overload trip. What is the reason for this?

It will tolerate fault conditions during start up

Fuses act too quickly

Fuses act too slowly

It will allow for inrush current or motor specific faults

Is it recommended to adjust the spring tension on the fuel valves during operation to achieve:

Exhaust temperatures in line (equal temperatures)

To improve the fuel atomizing.

Equal cylinder pressures

Not recommended at all

"Noxious Liquid Substances which, if discharged into the sea from tank cleaning or deballasting operations , are deemed to present a hazard to either marine resources or human health or cause harm to amenities or other legitimate uses of the sea and therefore justify a limitation on the quality and quantity of the discharge into the marine environment". What is this a definition of?

A liquid cargo that is prohibited for carriage in vessels other than type 1 chemical tanker, as defined in the INC Code.

A category "Y" substance as identified in the revised MARPOL Annex II.

A category "X" substance as identified in the revised MARPOL Annex II.

An NLS as defined in ISGOTT revision V.

On modern chemical tankers, nitrogen is often used to achieve a super-dry atmosphere within a cargo tank prior to loading. Sometimes however, equipment delivering a special air supply is fitted and available for this same purpose. What does this equipment do?

It injects nitrogen into the air.

It supplies super-cooled air.

It filters carbon-dioxide out of the air.

It supplies de-humidified air.

What is the approximately efficiency of the ejector?

The ejector's efficiency is between 20% and 30%.

The ejector's efficiency is between 30% and 40%.

The ejector's efficiency is between 70% and 80%.

The ejector's efficiency is between 60% and 70%.

When operating a steam boiler burner unit what is the best method for evaluating that the correct amount of excess air is being supplied to the furnace?

The colour of the flame in the furnace.

The reading from the flue gas oxygen analyser

The length of the flame in the furnace.

The colour of the exhaust leaving the uptake.

A mixed cargo of hard frozen products is to be loaded in layers into one deep cargo space on a conventional reefer vessel. The products are steel drums of frozen orange juice, frozen meat in cartons and frozen beef hocks in muslin. What would be the best position for loading the drums of orange juice?

In the middle layer.

In the bottom layer.

Since all the cargo is hard frozen it doesn't matter which layer the orange juice is loaded.

In the top layer.

On a Container vessel, to what would a fibreglass yacht be secured after lifting onboard?

The cradle

Flatrack

Yacht Bay

Pallet

What would be the most probable cause of overheated bearings?

None of the mentioned alternatives

Lubricating oil pressure is too low.

Water in the fuel oil.

Charge air pressure is too low.

Whilst underway, during the approach and in the process of double banking, or whilst transferring cargo whilst underway, the following signals from the IMO's Collision Regulations should be displayed (unless local regulations differ) by both ships:

Signals for vessels restricted in their ability to manoeuvre

Signals for vessels towing

No special signals required

Signals for a vessel not under command

Данный онлайн-тест состоит из 90 случайных вопросов из тестов CES 5.1 по выбранной вами тематике.