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Tests en ligne : Test online CES 5.1 for 3rd-Eng/4rd-Eng
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The comburent is
the oxidising-reductor agent, which burns in contact with air
the oxidising agent in the presence of which fuel may burn. The oxygen is a comburent par excellence
the reductor agent in the presence of which fuel may burn. The monoxide is a comburent par excellence
the name given to any fuel, when it burns with oxygen
What is a polar (liquid)?
A liquid that mixes with water
A liquid that conducts electricity
A liquid that emits flammable vapour
A liquid that doesn't mix with water
In general what is the proportion of concentrate to water to produce foam?
Between 50 and 100%
over 100%
This operation is done automatically and in relation to the foam
Between 3% and 6%
*Where a fixed fire detection system does not include means of remotely identifying each detector individually, detectors are grouped in "sections". These sections may cover up to:
5 enclosed spaces
10 enclosed spaces
25 enclosed spaces
50 enclosed spaces
*What precautions are necessary to prevent soot fires in the exhaust boiler ?
Hose down the smoke side at regular interval
Clean the smoke side regularly with soot blower equipment
Clean the smoke side with chemicals
All the mentioned alternatives
The discharge arrangements for halogenated hydrocarbon total flooding systems shall be so designed that the minimum quantity of medium can be discharged in (based on the discharge of the liquid phase): (SOLAS II-2/5.3.5)
20 seconds or less
30 seconds or less
1minute or less
2 minutes or less
The main risk for people when using CO2 as an extinguishing agent in a closed space is:
Air suppression
Toxicity
Reduction of visibility
Low temperature at the nozzle
The button or switch “dimmer” of a mariphone serves:
To regulate the light
To suppress the noise
To reduce the volume
To regulate the transmitting power
By the term “Stand by” the operator of a coast-station means that one should:
Don't know
Wait until the coast-station calls again
Switch back to the calling channel
Give the position of the ship
Sun rays and light reflected from a bright surface (e.g. sea); can cause damage to the skin and eyes. What is this type of burn called?
Dry burns.
Cold burns.
Electrical burns.
Radiation burns.
Your vessel is moored alongside in Houston, discharging oil to the terminal. During discharging your vessel is hit by an other vessel and your vessel is leaking oil into the Houston Channel. What will you as Sen.Off.Deck do?
Commence cleaning up the oil spill around the vessel by using chemicals.
Stop discharge, inform USCG and Qualified Individual.
Call for tug boats for assistance to nearest anchorage.
Continue discharging.
When a vessel is to experience a long tow across an ocean, what would be the best system of connecting the tow?
Towing Hawser from a deep sea tug through the centre lead forward and made fast on the nearest mooring bits forward.
Wire from a deep sea tug made fast through a shoulder lead on the vessel's leeward side
Wire from a deep sea tug through the forward centre lead of the ship and made fast onto several mooring bits on the forecastle
Wire from a deep sea tug connected to the ship's anchor chain.
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
ensuring that every passenger is provided with an immersion suit or a thermal protective aid
seeing that passengers are suitably clad and have donned their lifejackets correctly
What is the general emergency alarm signal as specified in SOLAS?
One long blast followed by six short blasts
Continuous ringing of the alarm bells
Seven or more short blasts followed by one long blast
Six or more short blasts followed by one long blast
Give the meaning of the following symbol:
survival kit
lifejacket
immersion suit
child's lifejacket
A person wearing an anti-exposure suit shall be able to:
don and remove the suit in the water in no more than 5min. if it impairs ability to swim
swim through the water at least 25m and board a survival craft
jump from a height equal to that of the stowage of liferafts arranged to be thrown overboard
dive into the water to the maximum draft of craft that the ship is provided with
The thermal insulation provided to the wearer of an anti-exposure suit is sufficient to ensure that the wearer's body core temperature does not fall at a rate of more than:
0.5°C per hour after the first 1.5h immersion in calm water at a temperature of 5°C
1.5°C per hour after the first 2,5h immersion in calm water at a temperature of 5°C
1.5°C per hour after the first 0.5h immersion in calm water at a temperature of 5°C
1°C per hour after the first 2h immersion in calm water at a temperature of 5°C
Which item among those below is included in the normal equipment of every rescue boat ?
a survival manual
an efficient radar reflector
one daylight signalling mirror with instructions
four rocket parachute flares
What is the meaning of this symbol ?
Start water-spray
Start engine
Start air supply
Lower lifeboat to water
How often should each lifeboat be lowered into the water and manoeuvred with its operating crew aboard under SOLAS regulations?
Monthly
At least every three months
At least every six months
Once a year
Which of the following actions should be done before throwing this type of inflatable liferaft over the side?
Disconnect the painter and launch it, checking that all is clear below
Inflate it on deck and then launch it if clear below
Check that the painter is made fast to a secure point and that the sea below is clear
Take circular gripes and adhesive tape (see photo) off the container to enable raft to inflate once in the water. If all clear, throw raft over side
How many Radar Transponders (SART) are required to be carried onboard a ship for use in survival crafts?
2, one of which being capable of floating free if the ship sinks
Two on each side of the ship
One in each lifeboat
One on each side of the ship
Give the meaning of the following symbol
Survival craft distress pyrotechnic signals
Survival craft portable radio
Rocket parachute flares
EPIRB
What is the meaning of this symbol ?
Embarkation ladder
Evacuation slide
Davit-launched liferaft
Lower lifeboat to water
An alarm signal consisting of seven short blasts followed by one long blast is sounded by the ship's whistle and the alarm bells. What are you to do?
Go to your lifeboat station (muster station).
Report on the bridge (deck crew) or engine control room (engine crew) for further orders.
Go to your fire station.
Go to (or remain in) your cabin and wait for further orders.
What kind of safety equipment should be in place in connection with a grinding wheel?
Welding mask.
Shield.
Goggles and shield.
Goggles.
What kind of permits have to be obtained before starting hot work in tanks?
Permit for entry.
Cold work permit.
Hot work permit + Permit for entry.
Hot work permit.
Welding and burning are among the factors which give the highest risk of fire on board ships. Precaution has to be taken to avoid this risk. Which of the following safety rules may be regarded as the most important?
The welder shall have been instructed in the use of the ship's welding plant.
Only use electrodes from a well-known manufacturer.
Only holders of welding certificates shall be allowed to carry out welding on board ships.
Electric welding plants shall be controlled by a responsible engineer before use.
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.
A deep tank on a General Cargo ship has been cleaned after discharge of palm oil; what needs to be done to prepare the space for dry cargo?
Ladders checked, CO2 lines closed and temperature probes removed
Suction line blanked off, heating coils fitted and bilge system closed off
Heating coils removed, bilge suctions and CO2 lines opened and tested
Ballast lines opened up, ladders removed and air vents closed
Why is it important to keep the condensate pH value within the correct range when operating steam boilers?
To prevent corrosion in the feed system.
To minimise oxygen content in the feed waters.
To minimise dissolved gases in the feed water.
To prevent sludge forming in the feed tank.
Ship's generators must be synchronised before they can be connected to the same supply network. Prior to synchronising, the generator voltage and frequency are respectively adjusted by:
Voltmeter and frequency meter
Synchroscope and speed governor
Speed governor and load power factor controller
AVR and speed governor
What should a cadet be aware of when using a needle gun?
A Cadet should be aware of the dangers associated with using a needle gun
A Cadet should be aware that the valve of a needle gun is not to be opened before starting to descale rust
A Cadet should be aware of the thickness of the needle gun valve
A Cadet should be aware that there could be a leak in the cowline of a needle gun
What are the main elements in a damage control plan?
A damage control plan is the same as an emergency plan
Arrangements for correction of list due to flooding within 15 minutes
Boundaries of the watertight compartments for decks and holds. Position of controls for opening and closing of watertight compartments. Arrangement for correction of list due to flooding.
Instructions and procedures for reporting damage to the Company
What is "spiked crude oil"?
A group of naturally occurring organic chemicals containing sulphur?
A crude oil where some gas is removed?
A crude oil blended with a liquefied gas or condensate?
A term used to
Air bags (dunnage bags) are widely used for securing palletised refrigerated cargoes. In the case of a fruit cargo, which of the given options should the user be aware of?
Over inflation can crush and damage the soft tissue of the fruit.
Over inflation can distort the pallet stack.
Over inflation can distort the air bag.
Over inflation can damage the ship's structure including the insulation.
On a RoRo vessel, which of the ships trading certificates details the type and location that dangerous goods are allowed to be stowed onboard
The Cargo Ship Safety construction certificate
Safety Equipment certificate
Certificate of compliance for the carriage of Dangerous goods
The machinery detail plate is missing from a large electric motor and the weight is unknown. As part of a routine maintenance check the motor has to be lifted to access some other equipment. Which of the given options is the correct action that should be taken?
Try and lift it with the engine room crane as it is designed to lift the heaviest components in the engine.
Estimate the weight of the motor and select a chain block and strop with a safe working load of 1.5 times the calculated load.
As it is only a routine maintenance and not a breakdown then postpone the task until full details of the motor can be obtained.
Use the biggest chain blocks and strops available and carry out a trial lift.
What is important to prepare prior to a helicopter operation?
To stop the vessel completely
Make sure all loose deck equipment at helicopter deck is stowed away and secured.
To increase the speed of the vessel
To light up the area for pick-up
Who is responsible to ensure that all personnel on board are provided with suitable Personal Protective Equipment where it is needed?
The Head Department
The Master
The Company/ employer
The safety officer
What should you observe when patrolling public areas on board?
Drunk people
Stowaways
If all the fire extinguishers are in place and that fire doors are open
All abnormalities that may affect the safety/ security of passengers, crew and the ship
What should be done in preparation for loading cold rolled steel sheets in bulk carriers?
8mm wire cables should be laid athwartships over the tank top spaced 5m apart
Dunnage should be laid athwartships over the tank top
Dunnage should be laid fore and aft over the tank top
16mm wire cables should be laid fore and aft over the tank top spaced 3m apart
What is polymerisation?
Polymerisation is when molecules of two or more different units link together and a new unit is created.
Polymerisation is when we producing paint.
Polymerisation is when molecules split up from each other and new units are created.
Polymerisation is when molecules of a particular compound link together into a larger unit containing from two to thousands of molecules.
On a Bulk Carrier, what should be done immediately if during the voyage the temperature of bulk coal exceeds 55?C?
Use fire fighting water in the cargo space
Notify the harbour authorities at the port of destination
Seal the hold completely and monitor the cargo using suitable instruments
Notify the ship owner and/or charterer
This graphical symbol is a logic gate. Which gate?
OR
AND
NAND
NOR
What is the normally accepted maximum allowable filling limit for the cargo tanks on an LNG carrier?
100%.
90%.
95%.
98%.
What is the definition of DEAD BAND?
The largest difference in the output signal for the same change in the input signal.
The change needed in the input signal to produce a change in the output signal.
The change in the output signal produced by a certain change in the input signal.
A missing electrical signal.
You are loading a cargo of Vinyl Acetate Monomer to several tanks on board. Tank 6 centre is about to finish and the next tank to load is 2 centre. How will you operate the valves to achieve this change-over?
I will close the valves for tank 6 centre when the required ullage is reached and then open the valves for 2 centre.
When the required ullage is reached in tank 6 centre, I will close the manifold valve, then close the tank valves for that tank. I will then open the tank valves for 2 centre and finally open the manifold valve again. (Using the manifold valve to control the flow avoids any pressure-surge in the shore line).
I will open the valves for tank 2 centre and then close those for 6 centre, as the required ullage is reached.
I will stop loading cargo when tank 6 centre reaches its required ullage and close the valves to that tank. I will then open up the valves to tank 2 centre and resume loading cargo.
Which of the following is an oval-shaped, purple coloured vegetable, with white, spongy flesh, native to tropical Asia but popular today in Mediterranean cookery?
Asparagus (asperge)
Angelica (dang-gui)
Artichoke (carchofas)
Aubergine (brinjal)
What is the function of the "scrubber" in the inert gas system on an oil tanker?
To prevent backflow of dangerous vapours to the machinery space.
To blend the flue gas and air and achieve the desired concentration levels for tank inerting.
To wash and warm the flue gas.
To quench, cool and clean the flue gas.
You have just finished discharging several grades of chemicals. Why is it important that the Chief Officer has considered "solubility" when planning the tank-cleaning programme?
Because it will have indicated if hydrocarbons will still be present on the tank bulkheads after initial cleaning and that a chemical additive may need to be circulated or sprayed afterwards to remove them.
Because it will have shown which tanks need to be cleaned first.
Because it will have indicated if the cargo residues can be cleaned with water alone, or if a chemical additive will be needed to help break them down.
Because it will have indicated how much odour there is likely to be remaining in the tank after cleaning.
A conventional reefer vessel is loading cargo of palletised fruit under controlled atmosphere (CA). Which of the given options is it essential that the deck officer confirms at completion of loading and before applying CA to the cargo?
All of the cargo hatches are sealed properly.
All of the cargo hatches are closed properly.
All personnel are out of the cargo holds.
That there is a tight stow in the cargo hatches.
What is characteristic of Cotton Seed Cake?
It is susceptible to tainting if stowed near odorous goods
It is unaffected by moisture
It does not require ventilation
Dunnage is not required for cargo stowage purposes
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.
Although not a requirement of the IMDG Code, on a container vessel, why would carrying Calcium Hypochlorite under refrigeration be a benefit?
To maintain a continuous air flow through the cargo.
To prevent the cargo temperature increasing into the danger zone.
To ensure the cargo is shipped in a clean container.
To maintain a record of the temperature of the cargo.
Some process control systems may several inputs and controlled variables. In this context what is meant by split-range?
On-Off control
Several controllers are connected to the same control-valve
Several control-valves are connected to the same controller
Several control-loops for the same range
What is the main purpose for taking diesel engine crankshaft deflections?
To check for weardown of the bottom end bearings.
To check for weardown of the main bearings.
To allow calculation of the load on each of the bearings.
To check that the shafting is in a straight line.
The temperature of chilled air is monitored after it has passed through a refrigerated cargo and the temperature noted. This temperature is often referred to as the RAT. Which of the given options does RAT stand for in relation to refrigeration of a cargo?
Return Air Temperature.
Respirated Air Temperature.
Relative Air Temperature.
Reduced Air Temperature.
Why shall you never pour water into hot fat?
The fat will stiffen immediately and need reheating.
The water will explode into steam causing hot fat to be thrown far away thus possibly causing severe burns or fire.
The water will turn into steam and cause the fat to explode.
The fat will not be edible any more.
Three earth lamps indicate - bright - bright - dark. Which of the following is indicated by this condition?
Two phases are good and one has a partial fault to earth
Two phases are good and one has a hard fault to earth
No faults on the system but a failed lamp
Two phases have a partial fault to earth and one is good
Under which MARPOL category are vegetable oils classified?
Category "Z".
Category "Y".
Vegetable oils are not classified under the MARPOL categories.
Category "OS" (other substances).
Ships officers must use a thermometer to take and record the pulp temperature of commodities being loaded onto a reefer vessel. From the given options, select the most important attribute of such a thermometer.
It must be portable.
It must be correctly calibrated.
It must be robust.
It must be economic to purchase.
How is a dangerous substance listed in the IMDG Dangerous Goods List?
By its Proper Shipping Name (PSN) and subsidiary name
By its Trade Name
By its Proper Shipping Name (PSN)
By its abbreviated Trade Name
What is a "colander" used for?
To drain the water off food.
To stir foods during cooking.
To hold different foods together during barbequeing.
To test the temperature of food during cooking.
A steam generating tube in a boiler is found to be badly sagged but not ruptured. Select, from the options given, the most suitable action to be followed in order to operate the boiler.
Plug both ends of the tube and drill a hole in the body of the tube.
As long as the tube is not ruptured the boiler can be operated normally.
Plug both ends of the tube.
Heat the tube up with a gas torch and return it to its original shape and position.
What kinds of checks must be carried out on slings, wires and other items of lifting equipment before they are used in routine operations?
They must be tested under load, to ensure they can bear the planned weight.
They must be visually inspected to ensure that the ID and SWL marks are clearly legible.
They do not need to be checked. They are checked under the vessel's planned maintenance system every 12 months.
They must be visually inspected and ascertained, so far as is possible, as being in good working order and fit for purpose.
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.
On the figure 4 possible definitions of the term "ABEAM" are shown. Which one is the correct one?
Abeam is defined as B on the figure
Abeam is defined as C on the figure
Abeam is defined as A on the figure
Abeam is defined as D on the figure
Which of these situations will cause undue delay to a vessel at her port of discharge?
Slow operation of hatch covers
Carrying out an off-hire survey
Carrying out an open-hatch condition survey
Asbestos mixed with the cargo
What will increase friction between the deck surface and cargo units?
Placing cargo units as closely as possible to each other
Placing soft boards or other anti-skid material under the cargo
Removing all traces of grease and oil from the decks
Tightening cargo lashings to the fullest extent possible
When setting the tappet clearance (rocker arm clearance) on cylinder cover valves it is important that the engine is turned to the correct position. Select, from the options given, the engine correct position for this procedure.
Each cylinder in turn should be at top dead centre position when setting the valve clearances for that cylinder.
Number one cylinder should be at top dead centre position for setting the clearance for all of the valves on the engine.
The engine should be positioned so that the cam follower for the valve for which the clearance is being set is on the cam base circle.
The engine should be positioned so that the cam follower for the valve for which the clearance is being set is on the cam peak.
By what means can we monitor and control the integrity of the hull?
Documented operating procedures
The chief officer is responsible for monitoring the integrity of the hull and superstructure at all times
Let experienced personnel close and secure doors and ramps
Automatic detection systems, television surveillance and patrolling of ro-ro cargo spaces
When making a small repair to the furnace refractory lining it is common to make a patch using castable plastic refractory material. Which is the best method, from those given in the options, of securing the patch to the main refractory lining?
Drill holes in the main lining and fix some anchor bolts to cast the patch around.
Cut away the damaged area to form an undercut right around the edge and fill with the plastic refractory material.
Pin some wire mesh across the damaged area and cast the patch over it.
Make a smooth hollow in the damaged area and fill with the plastic refractory material.
During UMS rounds at night during a sea passage, and the duty engineer discovers the main engine lube oil pump starter "chattering" loudly. Should he:
Switch over to the other pump and inform the CE of the noise immediately.
Call the electrician and inform him of the noise.
Inform the duty officer on the bridge of the noise.
Switch over to the other pump and leave the starter until the next morning.
What is this?
A hydrostatic release unit
A liferaft release unit
A slip hook
An antistatic release unit
On a Container vessel, what is 'defrosting' associated with?
Reefer containers
Containers carrying IMDG cargoes
Dry cargo ventilated containers
Fan containers
You have just completed washing a stainless steel cargo tank, following discharge of a cargo of Isobutylamine. You have washed the tank with warm salt water. What will you now do to prevent damage to the stainless steel?
Rinse the tank with cold salt water.
Rinse the tank with fresh water.
Vent the tank immediately.
Turn the heating coils on to dry the tank as quickly as possible.
An accumulation test may be necessary for a steam boiler following repairs or modifications. Which of the given options does the accumulation test check?
The capacity of the safety valve to relieve pressure.
The time taken to fill the boiler with water under steaming conditions.
The rate at which the boiler can generate steam.
The time taken for the boiler to reach operating pressure.
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
Select, from the options given, the best method to be used for cleaning a cargo space on a conventional reefer vessel into which the cargo to be loaded is the same as the previous cargo carried.
A quick blow through on the top of the deck gratings with compressed air.
Sweep clean the top of the hatch gratings and lift the gratings to sweep clean below them.
A quick blow through on top of and below the deck gratings with compressed air.
A complete wash down of the cargo space with a suitable cleaning agent.
One of the tubes in a seawater cooled condenser is leaking due to being holed half way along its length. What is the most appropriate onboard repair method to be used from the options given?
Roll both ends of the leaking tube using a tube expanding tool.
Blank off the leaking tube at both ends with steel screw plugs after cutting an internal thread using a suitable tap.
Blank off the leaking tube at both ends using suitably tapered brass plugs.
Blank off the leaking tube by brazing a cap to each end of the tube.
What is the approximate API gravity of Arabian Light Crude?
30 degrees.
40 degrees.
27 degrees.
33 degrees.
What is most important for visual search purposes?
Use of standard search pattern
Design of special search pattern
Start a search immediately
Design of individual search pattern
During cargo or bunker operations, oil response equipment is to be:
Used elsewhere in the ship
In its store room
Ready for immediate use
In the cargo pump room
On a RoRo vessel, what is the Maximum Securing Load of mild steel shackles?
35% of the breaking strength
40% of the breaking strength
50% of the breaking strength
25% of the breaking strength
This is a parallel L-C circuit with a curve showing frequency- impedance characteristics. Which of the formulae A to D will you utilize for determining the resonant frequency f?
fo = Pi*sqrt (L/C) / C
f o = 1 / (2*Pi* sqrt (L/C))
fo = 1 / (Pi*sqrt (1 - LC))
fo = 1 / (sqrt (1 - LC))
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
Having a CO2 alarm during normal working hours, what immediate action should be taken?
Get into the control room.
Awaiting further order.
Get out of the engine room as soon as possible.
Ignore the alarm.
The air cock on a boiler is located at
The end of the superheater
Top of return header
Highest point of the steam and water drum
Superheater inlet side
Indicate the correct name for the part marked on the sketch:
Connecting rod
Push rod
Camshaft
Crankshaft
Ce test en ligne se compose de 90 questions aléatoires issues des tests CES 5.1 sur un sujet de votre choix.