Головна Онлайн-тести CES Chemical tanker 2nd-Off / 3rd-Off Test online CES 5.1 for 2nd-Off / 3rd-Off, Chemical tanker vessel

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Питання 1 з 90

Give the meaning of the following symbol

Line throwing appliance

Rocket parachute flares

EPIRB

Survival craft distress pyrotechnic signals

What class of fire is a smoldering fire of wood, textiles, paper and other carbonaceous materials?

Class D

Class A

Class C

Class B

Where in accommodation spaces shall smoke detectors be located? (SOLAS II-2/13.2.2)

In messrooms, public lounges and other public rooms

Near ventilation ducts throughout the accommodation spaces

In all crew and passenger cabins

In stairways, corridors and escape routes

*Which of the following action must imperatively be carried out before the central gas extinguishing system is used on a fire in engine rooms, cargo holds or other confined spaces?

Make sure that all openings to the compartment must be closed

Close down boilers

Stop all engines except for the emergency source of electrical power

Make sure that the compartment has been evacuated

What does a "High viscosity substance" for Cat A & B products mean ?

A substance with a viscosity equal to or greater than 25 mPa.s at the unloading temperature.

A substance with a viscosity equal to or greater than 250 mPa.s at the unloading temperature.

A substance with a viscosity equal to or greater than 40 mPa.s at the unloading temperature.

A substance with a viscosity equal to or greater than 125 mPa.s at the unloading temperature.

What will happen if Phenol is overheated ?

It will become solid.

It will evaporate.

It will be discolored and turn pink.

It will freeze and turn pink.

You have just discharged a Category "A" chemical cargo and are making the first wash of the tank that had contained it. The washing contain a chemical residual concentration of over 0.1% by weight. You can:

Discharge the washing to sea directly?

Discharge the washing to sea only if you are outside a special area?

Discharge the washing to shore reception facilities only?

Discharge the washing to sea only if you are outside a special area, your speed exceeds 7 knots, depth of water exceeds 25 metres and distance from land exceeds 12 miles?

If you use chemicals for cleaning up an oil-spill on the water, what would the chemicals do?

Absorb the oil for easy removal

Remove the oil from the water

Contain the oil within a small area

Disperse or dissolve the oil into the water

Which of the connections you are shown, are the dedicated shore connection (MARPOL-connection) for discharging of sewage ?

What is the result of a "high metacentric height"?

The vessel will roll violently?

The vessel will roll slowly or be unstable?

The vessel will have a great bending moment?

The vessel-s tweendeck heights is too high?

With a "good" GPS satellite position fix it is possible to achieve an accuracy of:

20 - 100 meters.

250 - 500 meters.

2 nautical miles.

1nautical mile.

Give the meaning of the following symbol

Wheeled fire extinguisher

Emergency generator

Fire pump

Portable fire extinguisher

Give the meaning of the following symbol

Emergency bilge pump

Fire pump

Bilge pump

Emergency fire pump

The tug has been released and is all clear. As officer in charge of that operation, should this be reported and to whom?

No need for reporting as the order was given from the bridge

Report all clear to the tug

Reported all clear to the Bridge

Report all clear to the Engine Room

How many lifebuoys can you expect to find on board a passenger ship of 190 metres in length (including those of the quick-release system) ?

at least 24 distributed on both sides of the ship

at least 12 distributed on both sides of the ship

at least 30 distributed on both sides of the ship

at least 8 distributed on both sides of the ship

How would you know how many people a lifeboat is supposed to hold ?

ask one of the deck officers

the number of persons should be clearly stated on the outside of the boats bow

no fixed number as it depends on the people's size

fill the boat up until no more space is left

Which of the following requirements regarding life-buoys do NOT correspond to present regulations? (SOLAS III/7.1)

Not less than half the total number of lifebuoys shall be provided with self-igniting lights

All life-buoys shall be placed in holders with quick-release arrangement

at least one life-buoy on each side of the ship shall be fitted with a buoyant lifeline

At least one lifebouy shall be placed within the vicinity of the stern

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

handholds on the underside of the hull

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

a remotely operated steering arrangement

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

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

a food ration for each person

an EPIRB

sea-charts and navigating equipment

one life-jacket for each person

The Muster List shall show the duties assigned to members of the crew. Which of the following duties shall be included in the "muster list" according to present regulations?

Preparation of immersion suits and thermo protective aids for the ship's passengers.

Preparation of survival craft's Emergency Positions Indicating Radio Beacons.

Closing of watertight doors, fire doors, valves, scuppers, sidescuttles, skylights.

Operation of the vessel's propulsion system.

*Which of following items shall be included in an abandon ship drill?

Checking passenger's immersion suits

Checking the distress signal rockets and other distress signals

instruction in the use of radio life-saving appliances

Checking the lifeboat provisions and supplies

Which of the following detailed explanations should be mentioned in the Training Manual ?

How to use escape routes and other escape methods

How to use navigational equipment for survival crafts

How to don lifejackets, immersion suits and anti-exposure suits, as appropriate

How to use surface to air visual signals to be used by survivors

The muster list shall specify details of general alarm signal and also actions to be taken by crew and passengers when the alarm is sounded. Which of the following actions do not necessarily have to be included in the muster list? The muster list shall:

specify substitutes for key persons who may become disabled

specify how the order to abandon ship will be given

be prepared and approved by the Administration before the ship proceeds to sea

specify which officers are assigned to ensure that life-saving and fire-fighting appliances are maintained in good condition

Ship staff shall inspect all lifting equipment and record the inspection in the cargo gear record book at intervals of:

Yearly

Whenever it is deemed necessary by the master

2 years

5 years

Which shipboard publication sets out calculations for cargo lashings?

The Cargo Securing Manual

Carriage of Safe Cargoes

SOLAS 74/78

The Cargo Stowage and Security (CSS) Code

Every passenger ship is required to carry:

A rescue boat capable of being launched by the assigned crew in 5 minutes

A fast rescue boat capable of being launched when ship is still making headway

A fast rescue boat capable of being lowered when the ship is at anchor

There is no requirement of any rescue boat

Training manuals for Life Saving Appliances and Fire Fighting systems and equipment shall be provided in crew mess room, recreation room or in each crew cabin. The training manuals shall explain the following in detail:

Emergency procedures including alarm signals, general instructions and safety practice onboard, specific information on equipment, operation of equipment

Manufacturer's specific information on equipment including maintenance procedures, operation of equipment

General Emergency procedures

Alarm signals and donning of lifjackets

What is the purpose of a "part flow display system" installed on some oil tankers ?

The Part Flow System makes it possible to observe the discharge visually for oil content, even in darkness

The Part Flow System makes it possible to discharge dirty ballast below the water line on older tankers

The Part Flow System makes it possible to measure the oil content, even if the Oil Discharge Monitoring Equipment is not working

The Part Flow System makes it possible to observe the discharge visually for oil content, on older tankers with discharge below the waterline

A chlorine carrier must be equipped with a chlorine absorption plant connected to the cargo tanks and cargo lines. What is the gas detectors alarm setting?

10 ppm.

20 ppm.

5 ppm.

15 ppm.

What is the purpose of the girders in the tank?

They transfer all the cargo forces acting on the plating.

They transfer all sea forces acting on plating.

They support the stiffeners.

They support the stiffeners and also take up some of the sea force.

If a refrigeration system contains air, how would you remove it from the system?

Pump the system down to the condenser, continue cooling water flow until the condenser is at the same temperature as the cooling water and vent off the air from the top of the condenser.

Stop the compressor and vent the air from the crankcase.

Pump the system down to the evaporator and keep the fan running until the evaporator is at ambient temperature and vent off the air from the top of the evaporator.

Stop the compressor and undo a pipe coupling at the highest point in the system to vent off the air.

The Company should ensure that the ship's personnel are able to communicate effectively in the execution of their duties related to the Safety Managment System. What does it really mean?

English language should be the working language on board the ship

All personnel on board shall be familiar with the Safety Management System. The individual seafarer shall know procedures specifically related to their rank and duties onboard.

The officers and crew should read the entire Safety Management System and memorize the content.

Everyone should know the name of the Designated Person in the Company

The chemical abbreviation "H2S" is often associated with Crude Oil cargoes. What does the abbreviation stand for?

Hydrogen Sour.

Hydrogen Separation - 2nd distillation stage.

Hydrogen Sulphide.

Halogenated Sulphide.

What is a low location lightning system?

A system displaying the escape route from all cabins by light points in the ceiling, powered by battery

A light system powered by battery or fluorescent signs mounted at deck level indicating the way to the nearest exit

An emergency illumination system that illuminates all deck areas to a minimum

An illumination system for all corridors in cabin areas

What might safely be used to prevent a load swinging when lifted by a crane?

Personnel underneath the load, holding onto it and restricting its movement.

Guide or tag lines, tended from a safe location.

A cargo net.

Short, jerky movements on the ship's controls.

A bulk cargo declaration shows that the iron ore to be loaded has an angle of repose of 45 degrees; what does this indicate?

The cargo pile is stable and unlikely to shift

The cargo may self-heat

The cargo pile will be very unstable

The cargo should not be accepted to load

Parallel sweep search in a co-ordinated manner is achieved when?

All facilities proceed with minimum safe speed

All facilities proceed with same speed

All facilities proceed with maximum safe speed

All facilities proceed with different speed

A heavy piece of machinery is loaded on deck of a container vessel, stowed across several flatrack containers. Select the most appropriate lashing method.

All lashings to be taken to the hatch top.

Some lashings direct to the flat rack and some to the hatch top, coaming and pillars.

All lashings to be taken to the flatrack lashing points.

All lashings to be taken to the hatch coamings, pillars and lashing bridges.

Normally ventilation fans in enclosed ro-ro spaces must be run continuously whenever vehicles are on board, why?

An increased number of air changes may be required when vehicles are being loaded or unloaded, or where flammable gases or liquids are stowed in closed ro-ro spaces

The manufacturer of the fans recommends continuous operation to reduce maintenance cost

It is better to run the fans continuously instead of testing the atmosphere

It is easier for the crew, they don't have to think about starting and stopping of fans

What is the meaning of the term "Steady as she goes" when acting as helmsman?

Reduce the number of helm movements used when steeriing a set course

Try to reduce the continuous swinging either side of the course when steering a compass course.

Keep the applied rudder constant until the next helm order.

While altering the ships head, the instruction "steady as she goes" means reduce the ships swing as rapidly as possible and steady on present course

A high speed diesel engine operates with a monobloc inline high pressure fuel pump consisting of a number of helical type pump units contained in a single housing. From the options given select the method which is the most common one available for adjusting the fuel timing onboard where no specialist setting up equipment is available.

Adjustment of the HP fuel block by adding or removing shims between the pump and the engine block.

Adjustment of the height of the individual fuel pump elements within the pump block

Adjustment of the drive coupling to the driven coupling for the HP fuel pump using reference marks to No 1 cylinder TDC.

Adjustment of the fuel rack position for the complete HP pump unit.

Cargo heaters are frequently used when discharging refrigerated LPG cargoes into pressurised shore tanks. What would be a typical "heating range" required from a heater for discharge of fully refrigerated propane?

From - 55 C to - 15 C.

From -25 C to +15 C.

From - 45 C to - 5 C.

From - 35 C to + 5 C.

Can slop tanks be used for the carriage of oil and are they therefore included in the total cargo capacity of an oil tanker?

Slop tanks may be used for the carriage of oil when not being used for the carriage of slops and are included in the total cargo capacity of the vessel.

Slop tanks may only be used for the carriage of oil on clean ballast tankers and are only included in the total cargo capacity of this type of vessel.

Slop tanks may only be used for the carriage of oil cargo by agreement between the shipper, receiver and charterer. They are not normally included in the total cargo capacity of the vessel.

Slop tanks may not be used for the carriage of oil cargo under any circumstances and are not included in the total cargo capacity of the vessel.

What temperature defines "hot" water in the context of tank washing on a chemical tanker?

A minimum of 10 degrees Celsius above the discharge temperature of the cargo.

At least 40 degrees Celsius.

At least 60 degrees Celsius.

At least 70 degrees Celsius.

What is the maximum stowage height for containers on deck of a General Cargo Vessel, if the vessel is not specifically designed for the carriage of containers?

The maximum height is two containers

There is no limit apart from point load limitations

The maximum height is one container

Containers must not be carried on deck

What is of major concern when a shallow draught ro-ro vessel is in river transit?

Air draught

Squat

Draught

Manoeuverability

The engine does not turn when starting air is supplied because of:

The engine temperature is too low.

Released blocking function in remote starting system.

Water in the starting air.

Leakage in the indicator cocks.

This vessel is encountered at the mouth of a river which leads to your discharge port. What do the various shapes tell you?

This is a vessel engaged in mine-clearance opetrations. The two balls in a vertical line indicate that it has a sweep mechanism deployed; the two diamonds in a vertical line indicate that the vessel should be given a clearance of at least 1000 metres; the ball / diamond / ball indicate that the vessel is restricted in her ability to manoeuvre.

This is a vessel engaged in dredging or underwater operations. The two balls in a vertical line indicate the side on which an obstruction exists; the two diamonds in a vertical line indicate the side on which it is safe to pass; the ball / diamond / /ball in a vertical line indiacte that the vessel is restricted in her ability to manoeuvre.

This is a vessel engaged on port security duties. The two balls in a vertical line indicate that the port is closed; the two diamonds in a vertical line indicate that the port is engaged in mine-clearance operations; the ball / diamond / ball in a vertical line indicate that the vessel is restricted in her ability to manoeuvre.

This is a vessel engaged in dredging or underwater operations. The two balls in a vertical line indicate the side on which it is safe to pass; the two diamonds in a vertical line indicate the side on which an obstruction exists; the ball / diamond / ball indicate that the vessel is restricted in her ability to manoeuvre.

When loading a General Cargo ship, what do logs, fishmeal, scrap metal and bales of cotton have in common?

They are all capable of causing oxygen depletion in the cargo holds

They are all liable to spontaneous combustion

Fires caused by these cargoes cannot be extinguished using carbon dioxide gas

They contribute to ship's sweat

This resistor has the value of 68 k ohm. Which colour code should be marked on the rings (assume ring d is the tolerance ring)?

a. red b. black c. yellow

a. blue b. grey c. orange

a. black b. red c. orange

a. violet b. green c. yellow

What must be ensured prior to loading heavy lift cargoes, on a general cargo vessel?

That the vessel is listed to the side opposite to which the load is to be lifted

That the vessel’s moorings are doubled

That the port authorities have been informed

That there are no free sufrace moments in tanks

In a heat exchanger where seawater is used to cool fresh water, the seawater pressure should be maintained lower than the freshwater pressure to:

Minimize the load on the seawater pump

Eliminate scaling problems on seawater side

Reduce erosion

Prevent contamination if leaks are developed

Conventional reefer vessels are usually designed with fine lines and large flared bows. Consequently, in adverse weather conditions, especially from forward of the beam, the navigating officers need to be mainly aware of which of the given options?

This type of vessel is prone to large hull deflections which may result in structural damage.

That the main engine governor may not be effective when the vessel pitches heavily.

That the bow is ideal for keeping the forward decks dry and clear of water.

That the vessel design means that high speeds can be maintained and the perishable cargo can be delivered in good condition.

On a Container vessel, what do the letters 'PP' mean within the IMDG Code?

Packaging

Pollutant

Marine Pollutant

Severe Marine Pollutant

If a public announcement is made during an emergency you should?

Just ignore it and continue working.

Listen carefully and consider if this information is of any value for you personally.

Tell everyone to listen.

Listen carefully and pass on information to passenger who may not have heard it or understood it.

Chemicals and harmful substances are safely stored in a designated locker on board, why?

For safety reasons and stock control. When chemicals or harmful substances is delivered to a crewmember, the user shall sign for the amount received.

For stock control. Most of the chemicals and harmful substances we use on board are expensive.

Chemicals and harmful substances must be kept away from passengers so that they don't steal it.

For safety reasons. Many substances found onboard are capable of damaging the health and safety of those exposed to them. Before any chemical or harmful substance is delivered to a crewmember, the personnel shall receive training, instructions and information so that they know and understand the risks arising from use.

"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.

After loading certain oil cargoes, known as 'static accumulator' cargoes, it is common to wait for the cargo to stop moving within the tank and therefore reach the point at which it will cease generating any further static electricity, before taking any samples or ullages. Which of the following is the typical length of time allowed for this process

120 minutes

30 minutes

75 minutes

2 minutes

Why should elevators not be used in an emergency?

Too few people can be moved in an elevator.

The elevator is reserved for people with special needs.

Power could fail and passengers could be trapped inside.

Engineering will shut down the ship's power and the elevator will be useless.

When people jump into the water from a ship, what should they do?

Keep their arms down at their sides.

Grab the lifejacket near the shoulder.

Take off their lifejackets.

Take off their shoes.

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

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

No, reflective marking indicates the escape routes

No, passengers should bring their own flashlights

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

Shortly after entering the cargo hold of a General Cargo ship to discharge logs, two dockers are seen to collapse; what is the immediate action to be taken by the OOW ?

Assume injuries are due to illness; stevedore and docker foreman to deal with situation

Enter space immediately to administer first aid

Sound general alarm, call emergency services ashore and prepare rescue team with self-contained breathing apparatus

Muster emergency rescue team and prepare to rescue casualties

Personnel on board ro-ro passenger vessels must undergo training courses before they can be part of the safe manning and assigned to emergency duties on board. What is minimum training requirement for all personnel?

No Training Course is required as long as the personnel have relevant experience

Basic Safety Training Course and Company Specific Familiarisation Course

Basic Safety Training Course and Crowd & Crisis Management Training Course

Basic Safety Training Corse

xxz

What stowage factors should be taken into account when planning the loading of cars, in a pure car carrier?

Overhead clearances

The amount of dunnage to be used

Cargo characteristics

Longitudinal and athwartships distances between the cars

How should chemicals and harmful substances be stored on board?

In a separate locker. The locker shall be clearly marked, locked and ventilated.

n the central store or in the engine room

In a locker preferably on boat deck. The locker shall be clearly marked.

In a gas-tight locker close to the bridge

What should be the status of the suction and discharge valves when starting a centrifugal pump?

Suction valve open and discharge valve closed

Suction valve closed and discharge valve open

Both valves open

Both valves closed

Under international regulations what is required during bulk cargo operations?

Ships’ personnel must continuously monitor cargo operations

The Supercargo must continuously monitor cargo operations

Ships’ personnel must monitor cargo operations as and when required to do so

The terminal representative must continuously monitor cargo operations

How often is the performance check of a Voyage Data Recorder by a competent person required under SOLAS?

At the Intermediate Safety Equipment Survey.

When the battery is replaced.

Annually.

When the data media is downloaded.

What is the meaning of the expression 'dead-band'?

It will is not respond to adjustment of set-point

The controller will not react to a process change in this range

The controller will enter 'sleep mode'

It will take some time before the controller will react to a change

The fire control draft on board is called the «safety plan» and shall be posted onboard. In port, a copy of this plan shall in addition be available from somewhere else. Where shall this copy be available?

Handed over to the surveyors.

At the gangway.

In the engine control room

On the terminal

What must be done after completion of ballasting operations on a bulk carrier?

All valves closed, tank ventilators in open position and sounding pipe caps replaced.

Sounding pipe caps left off

All valves and lines left open

All valves closed and tank ventilators to closed position

The effective stability of a tug, when assisting a vessel to manoeuvre, can be decreased by hydrodynamic interaction with the ship it is assisting. Where is the most dangerous position of the tug relative to the ship, for this adverse affect to be found?

The most dangerous position is when the tug is alongside the amidships section of the larger vessel.

The most dangerous position is where the tug has made fast the towing spring and is then moving ahead of the larger vessel.

The most dangerous position is where the tug approaches the stern of the larger vessel and enters into its associated positive pressure field.

The most dangerous position is where the tug approaches the bow rounding the forward shoulder of the larger vessel.

High Voltage systems rely on the installed protective equipment being able to interrupt any fault in the system. Throughout the system, the fault level has been calculated, and under no circumstances must the system be modified to exceed this fault level. What is meant by fault level?

The amount of apparent power, that would be drawn from the generating plant, when a short circuit occurs at the bus bars.

The current level flowing into a dead short to earth at any point on the ship, directly from the High Voltage system.

The amount of apparent power that could flow into any fault at any point in the electrical network.

The current level flowing into a symmetrical short circuit fault between all three phases.

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

Forecastle is given by C on the figure

Forecastle is given by B on the figure

Forecastle is given by A on the figure

Forecastle is given by D on the figure

A conventional reefer vessel, on passage to the loading port, should pre-cool the cargo spaces intended for shipment of the refrigerated products. Select from the options given, the one which best completes the following statement. "In general, pre-cooling should commence….

…six hours before arrival at the loading port."

…at anytime prior to arrival as long as the delivery air is at the required carriage temperature."

…on arrival at the loading port to demonstrate that the fans can deliver refrigerated cold air to the cargo spaces."

…about 48 hours before arrival with the temperatures in the cargo spaces stable for the last 24 hours."

Which of the following statements is correct with respect to IMDG cargo, loaded on a General cargo vessel, that is also classed as a Marine Pollutant

This cargo can only be loaded under deck

This cargo can only be loaded on deck

Cargo must be loaded in a protected location and preferably under deck if IMDG Code allows

Cargo of this type can be loaded anywhere on board the vessel

What ingredient, made from durum wheat, is commonly used as an alternative to rice with north-African dishes?

Bulgar wheat.

Couscous.

Soya.

Semolina.

If a cargo has a litreweight 0f 1.5200 kg/l at 15 degrees Celsius and a correction factor of 0.001 per degree, what will the litreweight be at a temperature of 20 degrees Celsius?

1.5250 kg/l

1.5195 kg/l

1.5150 kg/l

1.4700 kg/l

What does this flag mean?

My vessel is stopped and making no way through the water.

Yes (affirmative).

I wish to communicate with you.

I have a diver down; keep well clear at slow speed.

What are twistlocks designed for?

To couple containers horizontally

To couple containers vertically

To bear container loads

To lock containers vertically and horizontally

Refrigeration plants using ammonia as the primary coolant have been fitted to some reefer vessels. When designing such a ship which aspect, from the options given, would be the most important consideration?

The temperature range that the plant would be expected to operate at.

Crew safety.

Installing a suitable control system for the plant.

Availability of the gas.

What is the benefit of prismatic Type "B" tanks?

The tanks do not form part of the ship's hull structure.

The ship's hull may act as the secondary barrier.

The tanks are completely self-supporting.

The benefit of maximising ship hull volumetric efficiency.

Sometimes an early warning of failure in High Voltage switchboards may be an unpleasant smell. If the switchboard uses gas circuit breakers, which of the following may indicate a potential problem?

Chlorine.

Gas oil.

Rotten fish.

Rotten eggs.

While on boiler watch in the engine room a rating is requested to assist with taking on stores. The task will take about half an hour. What should the rating do?

Just ignore the request to assist with the stores.

Go and help with the stores but go back and check the boiler every 10 minutes.

Raise the boiler water level above normal to make sure there is sufficient water while he is busy with the stores.

Contact the engineering officer of the watch for permission to assist and to arrange a relief for the duration of the store taking.

Why should trousers worn in the galley be full length, but loose fitting?

Because ventilation will lessen the chance of cramp in the lower legs.

Because keeping the lower legs uncovered will lessen the chance of heat rash.

To lessen the chance of scalding, if a hot liquid is spilled.

Because it is the style adopted by all marine cooks.

One of the Main Engine cooling pumps is down for maintenance. The rest of the cooling pumps are operating near full capacity with minimum margins on the maximum temperature limit. What should be the correct action to take with regard to UMS operation?

Operate the engine room on manual mode until the maintenance is completed and the cooling pump is operational and switched to stand-by mode.

Arrange frequent checks of the condition during the night otherwise operate in normal UMS-mode

Arrange with a rating "on watch" in the engine room for the UMS period.

Hope that the alarm function and automatic temperature regulation will function correctly and switch to UMS-mode as normal

What does the image indicate?

The image indicates a passenger ship coming alongside

The image indicates a passenger ship moored port side alongside

The image indicates a passenger ship moored starboard side alongside

The image indicates a passenger ship letting go her mooring lines

What is the main reason for sometimes having a separate forced lubrication system for the camshaft on large cross head engines?

To prevent the camshaft system being contaminated with any water leaking into the main lubrication system from faulty cylinder liner seals.

Because the camshaft lubrication system has a lower pressure than the main lubrication system.

To prevent any fuel leakage from the high pressure fuel pumps contaminating the oil in the main lubrication system.

Because the camshaft system uses a different grade oil from that used in the main lubrication system.

What is the colour of the smoke signal used by life-saving stations or rescue units indicating that distress signals are observed in daylight?

Green

Yellow

Orange

Blue

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