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Online testing: Test for Deck department on Oil Tanker (CES v6.0)
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The test consists of 80 random questions.
Total questions on this topic: 470
Total questions on this topic: 470
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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?
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.
In which ways is heat transmitted?
Conduction, convection and radiation.
Delay, conduction, radiation.
Gasification, conduction and convection.
Radiation and gasification.
Which of the following measures should be applied when hot work is to be undertaken in a harbour?
All the answers are good.
To maintain a permanent fire watch of at least four persons.
To use only intrinsically safe equipment in the area where hot-work is performed.
To have a hot-work permit.
Which one of the listed fire-extinguishing medium is to be preferred to fight a fire in an electric installation (for example the main switchboard)?
Foam.
Powder.
Gas.
Sprinkler.
What is the daytime signal to be shown when the vessel is at anchor?
A black ball forward where it can best be seen.
The national flag flying from the fore mast.
A black diamond forward where it can best be seen.
Two black balls where they can best be seen.
What is the output shown on the “Rate of Turn” display fitted on the bridge?
The Rate of Turn indicator displays the rate the ship is swinging in degrees per minute.
The Rate of Turn indicator shows the changing angle of the vessel from the meridian.
The Rate of Turn display shows the turning speed the vessel is swinging in degrees per second.
The Rate of Turn indicator shows the rudder angle applied by the helmsman to turn the ship.
What will you do if you are helmsman and the OOW (officer on watch) gives you the order: “Port 20” and after a while the order: “Ease to 10”?
Apply 20 degrees of rudder towards port and then after the second command reduce the wheel to 10 degrees of helm.
Apply the wheel to alter the course 20 degrees to port and then after the second command change the heading a further 10 degrees.
Change the compass course to a new heading which is 20 degrees to port of original heading and then after the second command reduce it to only 10 degrees to port of original heading.
Turn the wheel until the rate of swing of the ship is 20 degrees per minute and then after the second order, reduce the wheel to make it swing at only 10 degrees per minute.
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.
What is meant by the term “keeping a proper lookout” as applied to the bridge lookout?
Keeping a visual lookout all round the ship and also actively listening out for audio signals.
Keeping a very visual lookout ahead and abeam of the ship.
Continually visually scanning the horizon all round the ship.
Keeping a visual lookout all round the vessel.
Which of these are indicators that an individual may be a drug smuggler?
The individual wears bulky or out of season clothing.
The individual is disinterested in the ship’s cargo.
The individual spends his or her free time hanging out with others.
The individual makes small local purchases.
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”.
The container for an inflatable liferafts shall be made:
Watertight, as far as possible, except for drain holes in the container bottom.
Non-watertight.
Completely watertight.
Non-watertight if fitted with drain holes in the container bottom.
What is the correct understanding of the term “gangway”?
Portable bridge arrangement between ship and shore, when alongside.
The ladder arrangement to allow walking access down the ship’s side into a boat alongside the vessel.
The access arrangements on an oil tanker between the bow and the after accommodation.
The access arrangements between the decks on the ship.
Why could dirty and oily areas of the deck be dangerous?
They may cause people to slip over and hurt themselves.
They show the ship is not efficient.
They are areas which should be cleaned up.
They do not look good to the customers.
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.
Prior to entering a cargo hold to check the cargo condition stowed in it, you must ensure that:
The necessary permits, based on valid atmospheric and other applicable tests, are issued and valid for entry.
Written instructions from the Chief Officer on what to check in the holdare signed by all persons entering the space.
A list of the items stowed in the applicable hold, extracted from the Cargo manifest, must be available for reference during the checks.
Emergency equipment at the after end of the main deck is in place.
What is the inherent danger in welding/cutting in piping containing freon?
Development of explosive gases.
Development of nitrous gases.
Depletion of oxygen in the air.
Depletion of the ozone layer.
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 given by A on the figure.
Underkeel clearance is given by B on the figure.
Underkeel clearance is given by C on the figure.
Underkeel clearance is given by D on the figure.
What is the name given to a devastating explosion that may occur when a rigid container containing a liquefied gas is exposed to a very high temperature?
BLEVE.
SLOP-OVER.
FLASH-OVER.
BOIL-OVER.
Which part of the float-free arrangement for inflatable liferafts is made to provide a connection between the ship and the liferaft?
The hydrostatic release unit.
The weak link.
The painter.
The lashing strap.
Which of these are indications that a parcel is suspicious?
The parcel is addressed to no one in particular, arrives unexpectedly and seems heavy for its size.
The parcel smells like chocolate.
The parcel is wrapped in clean, brown paper and is addressed to a crewmember from his wife.
The parcel came from Joe in the safety department and arrived quicker than expected.
An inert gas system is used during a Crude Oil Washing operation:
To build up internal pressure and so increase the pumping rate.
To protect the condition of the steel structure of the tank.
To ensure a safe atmosphere in the cargo tank throughout the operation.
I don’t know.
During bunker operations, oil response equipment is to be:
Ready for immediate use.
In the cargo pump room.
In its store room.
Used elsewhere in the ship.
Which is the “STARBOARD BOW”, in the figure?
Starboard bow is given by B.
Starboard bow is given by C.
Starboard bow is given by A.
Starboard bow is given by D.
What is the main characteristic of the weak link in a float-free arrangement for inflatable liferafts?
Be of sufficient strength to permit to pull the painter from the container and the inflation of the liferaft.
Be of sufficient strength to break at a depth of at least 4 m and release the liferaft from its berth.
Be of such a strength to be cut by any person with a jack-knife.
Be of sufficient strength to keep the liferaft alongside the ship when dragged at a maximum speed of 3 knots.
How many rocket parachute flares are carried in each liferaft with SOLAS B pack?
6.
12.
2.
Nil.
Give the meaning of the following symbol:
Fire main with fire valves.
Foam valve.
Fuel lubricating oil valves.
Section valves drenching system.
What is the normal name given to the fuel oil used for the ship’s main engines?
Cargo.
Lubricating oil.
Fuel oil.
Bunkers.
What is the objective of the merchant navy?
To safely transport goods by sea.
To provide employment for persons who wish to become seafarers.
To earn money for the shipowner.
To transport and deliver goods as quickly as possible.
What is the purpose of the Ship Security Plan?
Protect your ship from risks posed by security threats or incidents.
Outline the organizational structure for the ship.
Outline specific measures for your ship to move from security level 1 to 2 and from 2 to 3.
Detail the duties of shipboard personnel assigned security responsibilities.
When is it good practice to check the pressure-vacuum valves?
After cargo transfer operations.
Before the next dry-docking.
Prior to cargo transfer.
I don’t know.
Apart from steering the helmsman should also:
Regularly check the gyro against the magnetic compass.
Keep a good lookout.
Regularly check the speed.
Check the visibility.
You must not attempt to move a casualty carelessly, if you suspect patient with:
Sleeping.
Fractured spine.
Consumed excess alcohol.
Unconscious.
What is a “Bollard”?
A Bollard is a loop in a rope.
A Bollard is a rope made up of several strands.
A Bollard is a very heavy rope.
A Bollard is a thick steel post to which mooring lines are secured.
What will you bring in a lifeboat if the ship is abandoned?
Warm clothes, blankets and lifevests.
As much biscuit and canned food as possible.
All pets that will most likely not be able to enter the boat by themselves.
All valuables like money, jewelry etc.
What do you understand by the term “Let Go” when applied to mooring and unmooring?
Let Go means to cast off the mooring ropes and wires.
Let Go means to let seafarers go ashore.
Let Go means to slacken a mooring rope.
Let Go means to leave the ship.
A person wearing an anti-exposure suit shall be able to:
Perform all duties associated with abandonment, assist others and operate a rescue boat.
Jump from a height equal to that of the stowage of liferafts arranged to be thrown overboard.
Don and remove the suit in the water in no more than 5 min. If it impairs ability to swim.
Dive into the water to the maximum draft of craft that the ship is provided with.
What general background colour is used on warning signs that indicate emergency or first-aid features, or indicate a safe condition?
Blue.
Yellow.
Red.
Green.
An immersion suit is:
Not allowing undue ingress of water after a jump from a height of not less than 4,5 m into the water.
Not allowing undue ingress of water after a jump from a height of not less than 18 m into the water.
Totally waterproof whatever may be the condition of immersion.
A class D fire involves what type of material?
Metals.
Gases.
Wood or other carbonaceous material.
Liquids.
Mention some important thoughts for what you have to do when you recognise that fire break out onboard.
Report to bridge or duty officer, actuate the fire alarm, call the persons around the fire and join the fire squad.
Go to the lifeboat start the motor then call the duty officer and commence fight the fire.
Report to bridge or duty officer, actuate the fire alarm, organise and commence fighting the fire.
I don’t know.
How many buoyant smoke signals are carried in each liferaft with SOLAS A pack?
2.
4.
6.
Nil.
To maintain a fire, three conditions need to be met: oxygen, combustible material and sufficient temperature for combustion. What subject must be removed to extinguish the fire?
Oxygen.
Either of the mentioned alternatives.
Combustible material.
Heat, oxygen and combustible material.
Give the meaning of this symbol:
Lifebuoy with line.
Lifebuoy.
Lifebuoy with light.
Lifebuoy with light and smoke.
What is the first think you are doing when having a lifeboat drill?
Put on the life jacket.
Swing out the davit.
Wait for order.
Enter the lifeboat.
If you are the helmsman on duty, what would be the correct action if the OOW (officer on watch) gives you the order to: “Change over from Automatic pilot to Hand steering”.
Apply the controls to disconnect the Automatic pilot and engage hand steering. Start steering the vessel using the wheel and confirm with the OOW the change-over is complete and the course you are to steer.
Standby the wheel and wait for the OOW to apply the appropriate controls to change from Automatic pilot to hand steering.
Apply the appropriate controls to disconnect the Automatic pilot and engage hand steering. Start manually steering the same course as was being steered by the automatic pilot.
Ask the OOW what course you are to steer and standby the wheel. Tell the OOW you are ready for changing over.
How much can the concentration of oxygen in the air decrese before it is dangerous to stay in the atmosphere without breathing apparatus?
2-3 %.
5-10 %.
10-15 %.
21 %.
What kind of foot wear should be used when working on deck and in the engine room?
Safety shoes or safety boots.
Sandals or plimsolls.
Tennis shoes.
Rubber boots.
Which of the following is false when a casualty is bleeding?
Cover the wound with a cloth.
Treat for the shock.
Control bleeding.
Encourage patient to lie quite and re-assure.
In the diagram, the amount of water under the keel is indicated by the letter “C”. Which bridge instrument would measure this value?
Echo Sounder.
Draught Indicator.
ECDIS.
ARPA Radar.
What types of fire extinguishers shall be used in the engine room?
Fire extinguishers equipped for powder or CO2 only.
Any fire extinguisher with a weight of less than 100 lbs.
Fire extinguishers filled with fresh water only.
Fire extinguishers of the handy-size types only.
What safety clothing should be worn during an anchoring operation?
All of the equipment mentioned in the alternative answers.
Boiler suit, working gloves.
Safety goggles.
Safety gloves, safety shoes.
With reference to the text, what is stated as a threat to lives at sea and the marine environment? Old ships are generally in a worse condition than new ships, though there are also very well maintained ships of 20 and even 30 years old. But the combination of the old, poorly maintained ships and bad management is a threat to both their crew and the environment. Therefore we must do our utmost to prevent dangerous ships from continuing in service.
All old or new ships which are badly managed ships.
All ships aged between twenty and thirty years old.
Bad management and poorly maintained older ships.
There is no immediate threat to the crew or environment.
What signal, if any, is specified in SOLAS as the “Abandon ship” signal?
The “Abandon ship” signal is not specified, only the general emergency alarm signal is stated.
Four long blasts.
Six short blasts, followed by one long blast.
Seven short blasts followed by one long blast.
On the figure there are four (4) possible definitions of the term “BOLLARD” given. Which one is correct one?
Bollard is B.
Bollard is D.
Bollard is C.
Bollard is A.
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.
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.
When handling slops on an oil tanker, what is meant by “settling”?
Allowing the oil and water to separate out.
Allowing any waxy layers to settle below the residual oil.
Allowing the mixture to rest once it has been pumped into the slop tank, so that any static charge disperses.
Allowing any sediment to separate out and drop to the bottom of the tank.
In which direction would the “FORWARD HEAD LINE” normally run?
The forward head line would normally lead forward from the bow.
The forward head line is normally the line used by the forward tug.
The forward head line would normally lead straight across to the jetty and be as short as possible.
The forward head line would normally lead from the bow back towards the stern.
When should the lookout report another vessel?
As soon as it is sighted or heard.
When the navigation lights can be clearly seen.
When the other vessel is approaching the ship.
When the other vessel is forward of the beam of own ship.
Which part of the fresh water quantity provided for each person the liferaft is permitted to accommodate may be replaced by a de-salting apparatus?
0,5 l if the de-salting apparatus is capable of producing this quantity in 2 days.
0,5 l if the de-salting apparatus is capable of producing this quantity in 1 days.
0,25 l if the de-salting apparatus is capable of producing this quantity in 1 days.
0,25 l if the de-salting apparatus is capable of producing this quantity in 2 days.
What kind of safety equipment should be in place in connection with a grinding wheel?
Goggles and shield.
Shield.
Welding mask.
Goggles.
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 “Wide step”.
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 “Long rung”.
What class of fire is a smouldering fire of wood, textiles, paper and other carbonaceous materials?
Class A.
Class B.
Class C.
Class D.
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.
Which mooring lines are shown in this picture?
The forward back springs.
The forward breast lines.
The forward headline and breast rope.
The forward head lines.
What is the necessary protection when you are rust chipping with air tools?
Gloves, goggles, earmuffs.
Protective clothing, safety shoes, earmuffs.
Goggles and ear protectors.
Protective clothing, safety shoes, gloves, goggles, earmuffs.
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 given by B.
Underkeel clearance is given by C.
Underkeel clearance is given by A.
Underkeel clearance is given by D.
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.
When connecting the loading/discharging hoses/arms prior to cargo operations on an oil tanker, it is quite common that a reducer is required. What is the name given to the part of the ship’s pipeline onto which the reducer is fitted?
Presentation flange.
Open flange.
Discharge coupling.
Manifold valve face.
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.
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.
I don’t know.
On the figure there are four (4) possible definitions of the term “AFT” shown. Which one is the correct one?
Aft is defined as A on the figure.
Aft is defined as C on the figure.
Aft is defined as B on the figure.
Aft is defined as D on the figure.
Give the meaning of the following symbol:
Heat detector.
Bilge pump.
Foam release station.
Powder installation.
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.
In which way shall a survivor be hauled out of the sea?
In 45° angle.
Vertical.
Horizontal.
None of above.
When you are taking an “ullage” on a cargo tank on an oil tanker, what are you actually doing?
Measuring the distance from the bottom of the tank to the ullage reference point.
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 surface of cargo.
Measuring the distance from the surface of the cargo to the underside of the maindeck.
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.
The upper airway consists of:
Mouth, throat and lungs.
Mouth, nose and throat.
Mouth, nose and lungs.
Mouth, throat and trachea.
What is the meaning of this symbol?
Survival craft pyrotechnic distress signals.
Rocket parachute flares.
Line-throwing appliance.
Radar transponder.
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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