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Online testing: Test for Deck department on Oil Tanker (CES v6.0)
1
Online test
Description
Reviews 1
The test consists of 80 random questions.
Total questions on this topic: 470
Total questions on this topic: 470
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In safety terms, what is an “interlock”?
A device which prevents an operation of equipment to take place, to allow access or maintenance to be carried out.
An alarm fitted to the freezers when someone is inside.
An electrical switch which is locked when not in use.
A device for string containers on deck.
Identify this symbol:
Emergency generator.
Inert gas installation.
Escape gate.
Fire glass door.
When is it good practice to check the pressure-vacuum valves?
Prior to cargo transfer.
After cargo transfer operations.
Before the next dry-docking.
During cargo transfer operations.
Which of these emission control requirements is correct?
Low sulphur fuels reduce emissions of volatile organic compounds.
Installation of an exhaust gas cleaning system reduces emission of nitrogen oxide.
Equipment containing ozone-depleting substances may be dumped at sea 50 miles from land.
Incineration of PCB’s is permitted.
Give the meaning of the following symbol:
Area protected by Halon 1301.
Area protected by drenching system.
Area protected by sprinkler.
Sprinkler installation.
Before using a bosun’s chair you should:
Personally check it to make sure it is safe to use.
Wet the rope to tighten up the splice.
Ask the bosun to check it.
Tie it on the gantline with a bowline.
What makes an effective look-out in a high risk piracy area?
Keeping a constant observation all around the vessel.
Having two lookouts working together at all times.
Having the lookout armed and dressed in protective clothing.
Keeping the lookout inside the vessel bridge.
Which one of the following types of rope is the most dangerous to work with?
Nylon.
Manila.
Steel wire.
Polypropylene.
In which way shall a survivor be hauled out of the sea?
Horizontal.
Vertical.
In 45 degree angle.
None of the above.
Which of these actions should crew take if a suspicious object that may be a bomb is located during a search?
Confirm with their search partner that the object found is suspicious.
Throw the object overboard.
Place the object in a desk drawer or file cabinet.
Cover the suspicious object with a box or blanket.
What should be carried out before entering the pump room?
Always carry a walkie talkie with you into the pump room and call for help immediately if you start feeling dizzy.
Notify the Chief Officer or officer on duty.
Notify the Chief Officer or officer on duty and run the ventillation for at least 15 minutes.
Run the ventilation for at least 15 minutes.
What should you know about the emergency stops on deck?
Where they are located and how to operate them.
How to disconnect or over-ride them for routine work.
I do not need to know anything about the emergency stops. It’s only the officers who operate them.
Where the re-sets are and how to re-set them.
What is understood by the word “Bollard”, when mooring a ship?
A Bollard is a thick steel post to which mooring lines are secured.
A Bollard is a very heavy rope.
A Bollard is a loop in a rope.
A Bollard is a rope made up of several strands.
The passage of electrical current through the body may result in severe and sometimes fatal injuries. You are witness to man getting electric current through his body and is stuck to the dangerous area. It is impossible to switch off the current by any main switch. How to break the current safely?
Call the electrician immediately.
Apply fish oil on your hands and cut the cords by the use of any metallic pliers.
Stand on dry insulating material and pull the person away with insulating material.
Just take the casualty in your arms and pull the person away.
The diagram shows the direction that a rope runs during a mooring operation and a possible place where it may break. Where would be considered the safest position to stand?
Outside the blue coloured zone.
Between the “point of break” and the “fairlead”.
Behind the point of restraint, but inside the blue coloured zone.
Inside the blue coloured zone.
A lifejacket has sufficient buoyancy and stability to lift the mouth of an unconscious person at a minimum of:
120 mm above the water (in calm water).
40 mm above the water (in calm water).
160 mm above the water (in calm water).
180 mm above the water (in calm water).
What indicates “MIDSHIP”, in the figure?
Midships is indicated by B, in the figure.
Midships is indicated by A, in the figure.
Midships is indicated by C, in the figure.
Midships is indicated by D, in the figure.
When an oil tanker is fitted with two slop tanks, how are they commonly referred to?
Primary slop tank and secondary slop tank.
Slop tank (cycle A) and slop tank (cycle B).
Nominal slop tank and back-up slop tank.
Slop tank (settling) and slop tank (decanting).
In which one of the following an oil, the flash point of which only needs to be over 43 °C, may be used?
In emergency generators.
In inert gas generators.
In the main engine.
In the kitchen.
The Explosimeter is an instrument to measure:
The composition of hydrocarbon gas / air mixtures in a tank atmosphere.
The amount of H2S gas in a tank atmosphere.
The level of oxygen present within a tank.
I don’t know.
What is the normal term used for the regular training of how to launch the lifeboat?
Lifeboat drill.
Lifeboat exercise.
Lifeboat practice.
Lifeboat launching.
What is the term used to designate the work that may cause heat, sparks or flames and that cannot be performed if specific compulsory precautions are not taken in places where nearby flammable products could be present?
Hot work.
Flammable work.
Machinery labour.
Specially hazardous work.
A person wearing a thermal protective aid shall be able:
To wear a lifejacket inside.
To jump into the water from a height of 4,5 m.
To climb up and down a vertical ladder.
To swim a short distance through the water and board a survival craft.
What is the meaning of the term “Steady as she goes” when acting as helmsman?
Keep the applied rudder constant until the next helm order.
Try to reduce the continuous swinging either side of the course when steering a compass course.
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.
Reduce the number of helm movements used when steering a set course.
A person wearing a thermal protective aid shall be able:
To wear a lifejacket inside.
To climb up and down a vertical ladder.
To jump into the water from a height of 4,5 m.
Wearing a lifejacket, jump into the water close to the raft and then swim to it.
If the order is given to a mooring deck to “make fast”, what would happen?
Mooring ropes are transferred from a winch drum to the bitts.
Make fast means to act very quickly.
Make fast means to apply a lashing to a coiled mooring rope.
What is the first thing you are doing when having a lifeboat drill?
Put on the life jacket.
Swing out the davit.
Enter the lifeboat.
Wait for order.
A lifejacket is so constructed that a person can correctly don it within a period of:
2 min.
10 sec.
30 sec.
1 min.
Commonly used on an oil tanker, what does an “Explosimeter” measure?
The composition of hydrocarbon gas/air mixtures in a tank atmosphere.
The amount of H2S gas in a tank atmosphere.
The level of oxygen present within a tank.
The relative amounts of nitrogen and combustible gases within a tank.
When acting as helmsman would you expect the reading of the gyro compass to be the same as the magnetic compass?
Very seldom would they be the same.
They would always be within 1 or 2 degrees of each other.
They would never be the same.
They would always be the same.
A person wearing an adult lifejacket shall be able:
To swim a short distance through the water and board a survival craft.
To jump from any height into the water without being injured or damaging the lifejacket.
To swim half a mile distance and board a survival craft.
What do you understand by the order: “Move the pilot ladder to the other side”?
To shift the pilot ladder to the opposite side of the ship.
To change the position of the pilot ladder from the main deck to the fore deck.
To rig another pilot ladder.
To move the pilot ladder further along nearer to the bow.
Give the meaning of the following symbol:
A class fire door self closing.
B class fire door self closing.
Closing appliance for exterior.
Foam valve.
What name is given to the process on an oil tanker, when inert gas is being blown into a cargo tank, to reduce the level of oxygen it contains?
Purging.
Venting.
Gas-freeing.
Blowing.
In the diagram, which arrow is pointing at the position known as the “Bridge”?
The Bridge is indicated by A.
The Bridge is indicated by B.
The Bridge is indicated by C.
The Bridge is indicated by D.
What is commonly recognised as the main hazard associated with unprotected entry into an enclosed space within the cargo area on an oil tanker?
The atmosphere within the space may potentially contain too little oxygen or it may contain toxic vapours.
There may be restrictions on access and mobility within the space.
There are no significant hazards associated with entry into closed spaces on tankers.
Which of the following disposal would be permitted?
Food waste from a vessel outside a special area and 12 miles from the nearest land.
Paper products from a vessel inside a special area and 15 miles from the nearest land.
Food waste from a vessel outside a special area and 10 miles from nearest land.
Food waste from a vessel inside a special area and 10 miles from nearest land.
A lifebuoy is constructed to withstand a drop into the water from a height of:
30 m.
18 m.
10 m.
What do you understand by: “Secure the tug”?
To make fast the tug.
To let go the tug.
To pass a line to the tug.
To pick up the tug line.
If a casualty has no pulse, the first aider must immediately:
Start heart compression and artificial respiration.
Inform the next of kin.
Raise an alarm for help.
Do nothing as the patient is already dead.
What is the meaning of this symbol?
Lifebuoy with light and smoke.
Lifebuoy with line.
Lifebuoy with light.
Lifejacket.
Which of air and water is the fluid that transfers the greatest amount of heat during the same time, given that the fluid is not flowing along the immersed body?
Water.
Air.
Both are transferring quickly.
Oily rags and metal turnings:
Are a fire hazard because they are liable to spontaneous combustion.
Are not a fire hazard unless ignited.
Are not a fire hazard at all.
Are a fire hazard because they generate their own oxygen when ignited and are therefore difficult to extinguish.
In order to extinguish a flammable liquid of the same kind as alcohol, we can use:
Anti-alcohol foam.
Sprayed water.
Water.
Water and foam.
When you are taking an “ullage” at a cargo tank on an oil tanker, what are you actually doing?
Measuring the distance from the surface of the cargo to the ullage reference point.
Measuring the distance from the bottom of the tank to the ullage reference point.
Measuring the distance from the bottom of the tank to the surface of cargo.
Measuring the distance from the surface of the cargo to the underside of the maindeck.
Which of the following inert gas systems on oil tankers use gases only from the ship’s main or auxiliary boilers?
The flue gas plant.
Nitrogen generator.
Combination – inert system.
The independent inert gas generator.
What is the industry standard requirement for connecting a flanged cargo hose?
A bolt in every hole.
A bolt in every alternate hole.
Enough bolts to prevent any leakage.
4 bolts, arranged as two pairs, diagonally across.
On the figure 4 possible definitions of the term “BREADTH” are given. Which one is the correct one?
Breadth is given by B on the figure.
Breadth is given by C on the figure.
Breadth is given by A on the figure.
Breadth is given by D on the figure.
What do you call the wide rung on a pilot ladder that prevents the ladder from twisting?
The wide rung on a pilot ladder that prevents it from twisting is called a “Spreader”.
The wide rung on a pilot ladder that prevents it from twisting is called a “Long rung”.
The wide rung on a pilot ladder that prevents it from twisting is called a “Ani-twist rung”.
The wide rung on a pilot ladder that prevents it from twisting is called a “Wide step”.
When talking about the properties of an oil cargo, what does “flammable” mean?
That it is not capable of burning.
That it does not need an external ignition source to cause it to burn. It will do so by itself.
That it is capable of being ignited and burning.
When it catches fire, flames may be seen, as well as smoke.
What are the people probably doing in the picture?
The people are hosing down the cargo hold to clean it.
The people are fighting a fire.
The people are playing with water.
The people are pressure testing the hull plating.
The wearer of a lifejacket can jump into the water without injury and without damaging the jacket from a height of at least:
4,50 m.
7 m.
12 m.
10 m.
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 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?
30 minutes.
2 minutes.
75 minutes.
120 minutes.
When first using cleaning agent in the machinery space, the crew should:
Confirm that it won’t form an emulsion.
Use it sparingly.
Use it liberally.
Confirm that it will form an emulsion.
An inflatable lifejacket will inflate:
Either automatically on immersion or by a single manual motion.
Automatically on immersion.
Either automatically on immersion or by a single manual motion or by mouth.
Either automatically on immersion or by mouth.
The minimum number of lifebuoys required on a cargo ship depends on:
The length of the ship.
The tonnage of the ship.
The number of persons on board.
The sea area in which the ship is allowed to sail.
Why is an Inert Gas system used during a Crude Oil Washing operation?
To ensure a safe atmosphere in the cargo tank throughout the operation.
To build up internal pressure and so increase the pumping rate.
To protect the condition of the steel structure of the tank.
By introducing Inert Gas bubbles into the oil, the build up of sediment is kept at a minimum.
What does the term “Hard a Starboard” or “Hard to Starboard” mean?
Put the wheel fully over to starboard.
Do not allow the vessel to swing to port.
Start the ship swinging to starboard.
The wheel is difficult to turn to starboard.
What kind of permits have to be obtained before starting cold work in tanks?
Cold work permit + Permit for entry.
Hot + Cold work permit.
Hot work permit.
Cold work permit.
On the figure there are four (4) possible definitions of the term “BREADTH” given. Which one is the correct one?
Breadth is given by A on the figure.
Breadth is given by C on the figure.
Breadth is given by B on the figure.
Breadth is given by D on the figure.
The container for an inflatable liferafts shall be made:
Watertight, as far as possible, except for drain holes in the container bottom.
Completely watertight.
Non-watertight if fitted with drain holes in the container bottom.
Non-watertight.
When you are on watch during a stay in port, what should you always ensure is ready at the head of the gangway?
Life buoy with line.
Notice board stating the sailing time of the ship.
A telephone to contact shore terminal control.
I don’t know.
Which of these procedures should crew follow when conducting a search?
Stand quietly in various spots around the space listening for unusual sounds like the tick tock a clock mechanism.
Search the perimeter of the space up to a height of 5 feet.
Wait in the area they’ve finished searching until they’re contacted for a status update.
Conduct random or spot checks of logical threat areas.
What is name of the machine shown, used to heave on the ropes during mooring and unmooring?
Winch.
Crane.
Windlass.
Capstan.
What is the requirement for bolting-up and securing blind flanges on the manifolds during cargo operations on an oil tanker?
A bolt to be in every bolt hole, tightened evenly.
A bolt to be in every alternate bolt hole, tightened evenly.
Bolts or clamps to be fitted such that the flange is adequately sealed.
A minimum of 4 bolts, spaced evenly around the flange.
Wearing an immersion suit when abandon ship is effective permits the person:
To jump from a height of 4,5 m into the water without being injured or damaging the suit.
Not to wear a lifejacket because the suit has sufficient buoyancy.
Not to wear warm clothing because the suit has sufficient insulation.
To climb up and down vertical ropes.
The figure shows the cross section of a ship floating in water with the hull coloured in red and the seabed below the vessel shaded. On this figure there are four (4) possible definitions of the term “UNDERKEEL CLEARANCE” given. Which one is the correct one?
Underkeel clearance is B.
Underkeel clearance is C.
Underkeel clearance is D.
Underkeel clearance is A.
Monoammonium phosphate used as a dry powder can be effective on what type of fire?
Solid, liquids, and gases.
Solid, liquid, gases and metals.
Metals.
Liquid and gases.
When loading a static accumulator oil, which of the following is a standard precaution applied to eliminate the risk of explosion through electrostatic charge in the tank?
No metallic sampling devices over 2 litres capacity should be permitted on the cargo deck at any time, unless thoroughly cleaned beforehand with soapy water.
No rubber containers over 1 litre capacity, such as those used for sampling, should be introduced into the tank between completion of loading and for 10 minutes after that time.
No metallic devices, such as those used for gauging and sampling, should be introduced into the tank during loading and for 30 minutes after completion of loading.
The most commonly recognised hazard associated with unprotected entry into an enclosed space on board an oil tanker is:
The atmosphere in the space may contain toxic gases or be deficient in oxygen.
The lack of communication with the OOW due to which the work may take longer to complete.
The space may not be well lit up, and hence resulting in inadequate movement of the person entering.
The presence of oil in the space which may result in slips/falls and crew injuries.
What do you understand by the term “Let go the tug”?
To cast off the lines that secure the tug to the ship.
To tell the tug master to go away.
To cut the lines securing the tug to the ship.
To take no notice of the tug.
What is commonly recognised as the main hazard associated with unprotected entry into an enclosed space within the cargo area on an oil tanker?
The atmosphere within the space may potentially contain too little oxygen or it may contain toxic vapours.
There are no significant hazards associated with entry into enclosed spaces on tankers.
There may be restrictions on access and mobility within the space.
There may be a lack of adequate illumination for safe movement within the space.
How many thermal protective aids are carried in each liferaft?
10 % of the number of persons the liferaft is designed to carry, or two, whichever is the greatest.
3.
4.
Nil.
On the figure 4 possible definitions of the term “STARBOARD BOW” are given. Which one is the correct one?
Starboard bow is defined as A on the figure.
Starboard bow is defined as B on the figure.
Starboard bow is defined as C on the figure.
Starboard bow is defined as D on the figure.
What will you do when all the fresh water in the survival craft is finished or about to finish?
Use sea water to keep your body wet.
Start collecting rain water.
Drink sea water.
Drink only 1 liter of sea water per day.
You are carrying out a search in a smoke filled room, wearing a breathing apparatus. How would you conduct this search?
Carry out a right or left hand search and proceed carefully, feeling the area in front with the foot and using the back of the free hand to check the area around.
As soon as you enter carry out a right or left hand search by placing the appropriate hand onto the bulkhead and then follow the bulkhead round as quickly as possible.
Proceed to the approximate centre of the room and then carry out the search on a circular pattern.
Proceed straight ahead to the far bulkhead and then carry out a left or right hand search as appropriate.
What should be done by the helmsman, if the OOW (officer on watch) gives them the order: “Starboard ten”?
Repeat the command back and then using manual control set the rudder to 10 degrees to starboard.
Repeat the command back and then put the control over sufficiently for the ship to swing at a rate of 10 degrees per minute to starboard.
Enter the lifeboat.
Wait for order.
How might a leak from a cargo tank on an oil tanker be readily detected during the voyage?
By regularly monitoring the vessel’s trim on the cargo computer – any cargo that leaks will run to the end of a compartment, resulting in an increase in trim.
By regularly monitoring void and ballast spaces, such as by testing them for hydrocarbon content and sounding them.
By occasionally opening a selected tank and manually measuring the cargo ullage, then comparing it to the “after loading” reading.
By frequently monitoring cargo level equipment readouts and comparing them to the load port departure readings.
On the figure there are four possible definitions of the term “STARBOARD BOW” given. Which one is the correct one?
Starboard bow is given by B on the figure.
Starboard bow is given by A on the figure.
Starboard bow is given by C on the figure.
Starboard bow is given by D on the figure.
The breaking strength of the painter in a liferaft permitted to accommodate 15 persons is at least:
7,5 kN.
5 kN.
2,5 kN.
10 kN.
The «Deck Support Level Oil Tanker» subject provides both theoretical and practical knowledge on safely working with electrical equipment. Understanding this information is a key indicator of an employee's competence in their role aboard a vessel. Deck support on an oil tanker primarily involves assisting the ship’s officers with tasks related to the maintenance and operation of the deck and cargo systems. Responsibilities may include overseeing the safe loading and unloading of cargo, monitoring weather conditions, maintaining navigational equipment, conducting safety drills, and regularly inspecting the ship’s structural integrity.
As an officer, it's also essential to be ready to take command in emergency situations and collaborate closely with other crew members to ensure the safety of the vessel and everyone on board.
- Version: 5.2.9, 6.0.10.
- Test type: STCW.
- Department: Deck.
- Level: Support.
- Vessel type: Oil Tanker.
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23.06.2026
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