Home Online tests CES Chemical tanker Deck Support Test online CES 5.1 for Deck department, Support level, Chemical tanker vessel

Online testing: Test online CES 5.1 for Deck department, Support level, Chemical tanker vessel

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The test consists of random questions on a selected topic.

Question 1 from 90

The pressure in a flexible hose must be set up

Before it is being laid down

After it has been laid down

All answers are correct

While it is being laid down

MMSI is short form of:

Maritime Mobile Service Identity

Mobile Maritime Safety Information

Merchant Mariners Signal Identity

Merchant Marine Ship identity

What should you do if the temperature of Hydrogen Peroxide Solution 65 % carried is raising 2° C per 5 hours and the temperature is above 40° C ?

The cargo should be monitored closely for the next 12 hours.

The cargo should be heated up to 45° C.

No special action to be taken.

To avoid uncontrolled decomposition the cargo should be discharged overboard.

What would be the stopping distance of a VLCC when proceeding at 8 knots in deep water and the engines are put 'Full Astern'?

8 nautical miles

4 nautical miles

15 ship lengths

Varies, but can be determined from trial data

Please name correctly the most common rudders as shown below? UNBALANCED, BALANCED, SEMI-BALANCED, UNDERHUNG BALANCED

NO. 3,2,1 and 4

NO. 1,3,2 and 4

NO. 2,3,1 and 4

NO. 1,2,3 and 4

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

a VHF transceiver

one immersion suit for each person

sea-charts and navigating equipment

one set of fishing tackle

What special safety measures are required by a seaman when working aloft on a stage?

Safety harness with a rope secured to a safe point above.

No special safety measures required.

A safety harness secured to the stage.

Helmet, safety shoes and gloves.

What is the correct initial firing procedure to be adopted when bringing a main steam boiler up to pressure from cold condition?

Start the firing on maximum rate and raise the pressure in as short a period as possible, to save energy.

Start the firing on minimum rate and alternate with maximum rate continuously firing until the boiler is up to pressure.

Start the firing on minimum rate and continuously fire until boiler is up to pressure.

Start with intermittent firing, using small firing periods and long intervals gradually building up to longer firing periods and shorter intervals until steam pressure starts to rise.

How often should normal testing of the cooling water be done?

Once a month.

Every 2.nd week.

Every day.

Once a week.

Which cell voltage is required to trickle charge a lead acid battery?

1.2 V

2.5 V

2.0 V

2.15 V

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

How should the initial draught survey report form be signed?

Adjacent to the column for the final draught survey

Adjacent to the initial draught survey figure remarked ‘for initial draught survey only'

Between the two columns for the initial and final draught surveys remarked ‘for initial draught survey only'

Adjacent to the initial draught survey figure

The data logger on a reefer vessel normally records temperatures for air delivery, air return and cargo pulp. How would the air delivery and return temperatures be expected to vary during the first few days of carrying a cargo of citrus fruit which had not been pre-cooled before loading?

The difference between the two temperatures would steadily increase.

The difference between the two temperatures would remain constant.

The two temperatures would remain constant

The difference between the two temperatures would steadily reduce.

What differences in design are there between a standard cargo hold and a cargo hold which can also be used for ballast on a Bulk Carrier?

There is no differences in design

This hold does not have ventilators

The coamings are much lower on the ballast hold

The ballast hold hatch cover must be fitted with additional securing devices

A cargo of palletized fruit on oblong pallets is being loaded into the 'tween deck space of a conventional reefer ship by stevedores under the supervision of the ship's crew. The pallets are loaded with the long side athwartships to ensure a stable stow. The final space in the first row is too small to fit another pallet athwartships. Select the option which gives the best course of action to be taken to deal with this situation.

Use a forklift truck to force the last pallet into the gap.

Complete the next row and fill the gap with dunnage (air) bags.

Complete the next row, cover the deck and secure the gap with wooden dunnage and plywood.

Turn the final pallet through 90 degree to fill the gap.

What could result from carrying coal with a high sulphur content on a Bulk Carrier?

Evolution of methane gases

Spontaneous combustion

A possible shift of cargo

Corrosion of steelwork in the cargo holds if the cargo becomes wet

The purpose of profiling is to?

Categorize people based on their nationality and ethnicity.

Make judgements about people based on heir appearance.

Identify different personality types.

Get beneath the outer shell of an individual to obtain a more complete picture.

How much sugar in a cargo of cement would render the cement worthless?

3.20%

1.00%

15.06%

0.001%

When LNG is used as fuel a double wall piping system must be used in the engine room. What condition should the annular space between the concentric pipes be maintained in when the fuel system is in service?

Filled with nitrogen at a pressure greater than the LNG fuel pressure.

Filled with nitrogen at a partial vacuum.

Filled with nitrogen at a pressure less than the LNG fuel pressure.

Maintained at a full vacuum.

Why is cotton the most suitable material for galley work clothes?

It is odour resistant, loose fitting and does not shrink or discolour when washed reasonably regularly.

It is more easily made into fashionable catering uniforms than synthetic fibres and is cheaper.

It is absorbant, hard-wearing, comfortable and can withstand frequent laundering at high temperatures.

It is effective at masking body odour and containing perspiration.

Pasta is often referred to as "al dente". What does this mean?

Coated with oil before boiling.

Part cooked.

Tender, but slightly firm to the bite.

Served separately from other ingredients.

What would a cracked cross-deck plating found during a loaded passage on a bulk carrier indicate?

That bulkhead failure is imminent

That the vessel is due for survey

That shear forces have been exceeded

That failure of the shell plating is imminent

After washing with fresh water how would you know whether salt remains in the cargo holds of a Bulk Carrier?

By carrying out a visual inspection of the cargo holds

By carrying out silver nitrate tests which should turn milky in the presence of chlorides

Using silver nitrate which should remain colourless in the presence of salt

By appointing a surveyor to inspect the cargo holds

You are proceeding up a river, with berths on both banks. You see this flag hoist on a vessel moored on a berth ahead. What does it mean?

My engine is disabled.

Caution! I have an anchor down.

You should proceed at slow speed when passing me.

I am about to depart the berth.

According to most industry standards, what percentage of oxygen by volume is required for entry into an enclosed space without a breathing apparatus?

11%

17%

21%

15%

Cargo residues of certain chemical substances are permitted to be removed by ventilation. What criteria is applied in determining if a cargo can be cleaned in this way? (Always accepting that local port authorities may have over-riding regulations on ventilation).

That the cargo discharged has a vapour expansion coefficient of at least 1.025.

That the cargo discharged has a vapour pressure greater than 5 KPa at 20 degrees Celsius.

That the vessel's ventilation system is capable of delivering a minimum of 20 changes of atmosphere per hour within the compartment.

That the volume of the tank does not exceed 1750 cubic metres, that the maximum remaining residues are less than 75 litres and that ventilation is additionally possible directly down the pumpstack.

Cargo compressors are often used to handle cargo vapour on LPG carriers. How is liquid cargo prevented from entering the suction side of the cargo compressor?

By filling the vapour line between the cargo tank and the compressor with silica gel.

By fitting a liquid separator in the vapour line between the cargo tank and the compressor

By fitting a drain valve on the vapour line between the cargo tank and the compressor which is left open when the compressor is operating.

By fitting a drier in the vapour line between the cargo tank and the compressor.

Many large, slow speed diesel engines have direct oil cooling of the piston crowns provided. An automatic slow down and alarm are sometimes fitted to protect against failure of this system. Which parameter is usually used to initiate this slow down?

Low oil pressure in the piston crown cooling space.

Low flow or no flow in the cooling oil return line.

High temperature of the piston crown.

Low pressure in the cooling oil return line.

What has the cadet been ordered to do?

The Cadet has been ordered to to dismantle the evaporator

The Cadet has been ordered to test the steering gear

The Cadet has been ordered to help the Bo's'un sandblast the poop deck

The Cadet has been ordered to paint the evaporator using a paint brush

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.

It has been shown that the controlled release of oil is effective in reducing the effects of the sea, making it possible for a rescue craft to approach survivors in the water. How many square metres does the IAMSAR Manual suggest may be calmed by releasing 200 litres of lubricating oil slowly through a rubber hose with the outlet maintained just above the surface while the ship proceeds at slow speed?

Approx 50,000 square metres.

Approx 50 square metres.

Approx 5,000 square metres.

Approx 500 square metres.

When cargo discharge reaches stripping levels on an oil tanker, it is necessary to reduce the inert gas pressure. Why is this?

To avoid over-capacity in the IG generator.

To avoid locking the cargo pump impeller.

To minimise blowback.

To comply with MARPOL Annex VI.

Select the option which best completes the following statement. "When carrying out repairs to damaged hatch gratings it is best to use…

…galvanised crosshead screws."

…galvanised nails."

…mild steel nails."

…mild steel screws."

One of the crossheads on a large, six cylinder, slow speed diesel engine has been severely damaged due to bearing failure. The connecting rod for the cylinder concerned is to be removed from the engine and the piston and damaged crosshead suspended in the engine so that it can be run on 5 cylinders. Which of the methods given in the options should be used to suspend the piston and crosshead?

Remove the cylinder cover and connect the piston (with crosshead attached) to the engine room crane and position the piston so that it covers the scavenge ports.

Raise the piston sufficiently high to allow the crosshead support pins/chains to be fitted and rest the crosshead on them (with piston attached and positioned above the scavenge ports)

Raise the piston (with crosshead attached) to just above the scavenge ports and insert pieces of wood through the ports to rest the piston on

Remove the cylinder cover and lift the piston until the crown and skirt are clear of the liner and place two bits of angle iron across the liner top to rest the piston on.

What should a duty crew member do immediately upon observing funnel soot emissions?

Inform the duty engineer

Inform the chief officer

Inform the master

Inform the duty officer

How can you avoid and/or reduce potential panic among passengers, if an emergency situation occurs?

Do not inform passengers about the situation. It will only create panic and make it difficult for the crew to handle the situation.

Inform the passengers, that there is nothing to worry about, to keep them calm.

Inform passengers at frequent intervals over the public announcement system about the situation and how they shall act. Use as many of the ships officers and crew among the passengers to assist.

Checking that all crew and passenger are present

When discussing ther chemistry of petroleum cargoes, if 'Alkanes' are saturated hydrocarbons, what are unsaturated hydrocarbons?

They are also referred to as Alkanes.

Pentenes.

Alkenes.

Octanes.

How many rescue boats should be provided on passenger ships of 500 gross tons and above?

Two, one on each side of the ship

Two, and at least one of the rescue boats shall be a Fast Rescue Boat

None

One Fast Rescue Boat

The use of combustible material is restricted in the accommodation spaces in order to:

Reduce cost of construction

Prevent occurrence of fire and explosion

Don't know

Contain and suppress fire and explosion in the compartment of origin

At what temperature do we take the Reid Vapour Pressure test?

We take the Reid Vapour Pressure (RVP) test at the temperature of 100 C.

We take the Reid Vapour Pressure (RVP) test at the temperature of 60.0 C.

We take the Reid Vapour Pressure (RVP) test at the temperature of 38.7 C.

We take the Reid Vapour Pressure (RVP) test at the temperature of 37.8 C.

Which regulations require supervising the embarkation of persons on board ro-ro vessels?

The Safety Of Life At Sea (SOLAS) Convention

International Labour Organization (ILO) standards

Standards of Training Certification and Watch-keeping (STCW) Code

The International Ship and Port Facility Security (ISPS) Code

You have just completed your tank cleaning programme for a set of tanks that previously contained Toluene. What will the main hazard be when you enter the tanks for mopping and inspection?

The lower part of the tank may still be wet and slippery. You may not be able to see this from the deck.

The atmosphere inside may contain insufficient oxygen to support life, or toxic vapours, or both.

There will commonly be insufficient natural light to safely descend the access ladder.

That there may hydrocarbons present on the bulkheads.

Which electronic component does this graphical symbol illustrate?

Field Effect Transistor

Diode

Silicon controlled rectifier

Bipolar transistor

Emergency instructions in appropriate languages shall be posted in passenger cabins. Which information shall as a minimum be included in the emergency instructions?

Where to find thermal protective aids

Name of cabin attendant

Escape routes and alarm signals

The method of donning life-jackets, escape routes and alarm signals

When there is doubt about the freshness of the atmosphere in enclosed or confined spaces, what action should be taken?

Open doors and manholes

Arrangements should be made for testing of the atmosphere to ensure maintenance of 21% oxygen of the space

Ro-ro decks are always ventilated in advance of an operation

Supply filter masks to all crew working on ro-ro deck

Use Kirchoff's voltage law and Ohm's law to calculate the voltage V(2) across the resistance R(2).

0,75 V

2 V

4,5 V

6 V

Some specialised vessels, mainly those involved in the carriage of fish, are capable of carriage temperatures as low as minus 60 degree Celsius. From the options given select the one that best describes why such low temperatures are used.

At minus 62 degrees Celsius the eutectic point is reached and all water in the cells is frozen.

Longer transport times are possible and hence less powerful vessels are required.

Higher charter rates can be achieved.

Quick temperature reduction is possible.

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.

A bulk cargo has a stowage factor (S.F) of 1.50 cubic metres per metric tonne (m3/mt). If 1000 tonnes are to be loaded what volume will this cargo occupy?

1500 cubic metres ( m3)

1000 cubic metres

15000 cubic metres (m3)

3000 tonnes

Indicate the correct name of the tool on the sketch:

Chisel

Drill press

File

Shaping machine

On the figure there are four (4) possible definitions of the term "AFT" shown. Which one is the correct one?

Aft is defined as B on the figure

Aft is defined as D on the figure

Aft is defined as C on the figure

Aft is defined as A on the figure

"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.

Why is is especially necessary to continue to ventilate the tank and to continuously monitor the atmosphere when working inside a cargo compartment which still contains vegetable oil residues?

For a tank which has contained vegetable oils, if it is continuously ventilated an Enclosed Space Entry Permit is not required. However, for anyone entering the compartment without a permit in place, they must carry an oxygen meter which continuously monitors the atmosphere.

Forced ventilation will create a hard "skin" on the residues, making them safer to stand on. Testing the atmosphere will indicate when this skin has formed, as no further vapours will be released.

Vegetable oils are commonly washed using very hot water. Forced ventilation will make the temperature inside the compartment better to work in. Monitoring the atmosphere will indicate if the humidity is increasing.

Because the decomposing residues continue to release hazardous gases, reducing the levels of oxygen in the tank and making the atmosphere potentially dangerous.

On a RoRo vessel, what should be done if a non dangerous goods ro-ro unit is found stowed in an incorrect location?

Advise stevedores at the port of discharge

Inform the company

Mark the unit and amend the stowage plan whilst informing the Master and company

Which of these foodstuffs contributes to lowering the cholesterol content in the blood?

Cheese

Fatty fish

Pork

Eggs

What is the purpose of the relief valves fitted to the doors and casing of 2 stroke diesel engine crankcases?

To relieve excess pressure in the crankcase resulting from piston rod gland leakage.

To maintain a constant pressure in the crankcase.

To relieve excess pressure in the crankcase resulting from a crankcase explosion.

To release any vapour formed by lubricating oil coming into contact with a hot spot and so avoid overpressure in the crankcase.

Certain oil cargoes, such as aviation turbine kerosenes or diesel oils, are specifically noted in ISGOTT as having an inherent hazard that requires ship's staff to monitor tanks containing them when on passage. What is that hazard?

They can absorb oxygen during the refining process and later release it into oxygen deficient atmospheres such as the ullage spaces in cargo tanks; the spaces should be monitored and the atmosphere adjusted if necessary.

They can release acidic elements when the ship is passing through tropical sea areas and the sea temperature rises above 30 degrees Celsius. A sharp odour may give an indication od increased corrosion which will require examination and possible attention after discharge.

Through contact with the tank structure, they can release highly toxic and corrosive matter which will remain in the sludge and can burn human tissue badly during a manual cleaning process. This can be detected by a drop in PTL factor and periodic tests should be made by ship's staff.

Unless containing an inhibitor, they can release toxic vapours if remaining in the ship for in excess of 60 days. If the cargo expands, these vapours may be released onto deck via the P/V valves and become a safety concern if thery enter the ship's ventilation systems.

One cylinder of a diesel engine has to be cut out to allow continued operation of the engine. Which of the following options may be the cause of the problem?

Camshaft timing incorrect.

Injection pump failure.

Gas side of turbocharger fouled.

Low charge air pressure.

What is the delivery pressure of a centrifugal pump dependent on?

The liquid-s density and delivery head.

The pipe resistance.

The net delivery heads.

The NPSH (Net positive suction head).

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

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

Leave the tank immediately and have the atmosphere retested.

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

Put on breathing apparatus and carry on with the task.

The Declaration of Security:

Details a ship’s security measures.

States the reporting procedures to government contact points.

Identifies the security responsibilities of shipboard personnel.

Addresses the security requirements shared between ships or between a port facility and a ship.

The lights displayed here indicate that this is one of two types of vessel. What are the two options?

A power-driven vessel engaged in towing, more than 50 metres in length, or less than 50 metres in length and showing a second masthead light, length of tow under 200 metres, seen head-on OR a power-driven vessel underway. Less than 50 metres in length and displaying the second all-round white masthead light, seen head-on.

A vessel engaged in fishing, restricted in her ability to manoeuvre, shooting nets OR a vessel engaged in towing, less than 50 metres in length, length of tow under 200 metres, towing vessel restricted in her ability to manoeuvre, seen head-on.

A power-driven vessel engaged in towing, less than 50 metres in length, length of tow under 200 metres, towing vessel and tow restricted in their ability to manoeuvre, seen head-on OR a power-driven vessel underway, more than 50 metres in length, or less than 50 metres in length and showing a second masthead light, restricted in her ability to manoeuvre, seen head-on.

A vessel engaged on pilotage duty, engaged in deploying or recovering a pilot, seen head-on or a power-driven vessel underway, lmore than 50 metres in length or less than 50 metres in length and showing the second masthead light, seen head-on.

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

Which type of equipment can be used to detect explosives?

CCTV

Metal detector

Particulate detector

Water cannon

A 5V dc source has an internal impedance of 0.2 ohms. When a load of 2.3 ohms is applied what voltage will be measured at the source terminals?

4.8 V

4.6 V

5.0 V

5.2 V

What is the minimum information to be given on a dangerous goods declaration on a General Cargo Vessel?

IMO Class, weight, cargo brand name, stowage requirement

Gross and net weight, volume of cargo, proper shipping name

IMO Class, UN Number, Gross weight, number of units of cargo, Proper Shipping Name

UN Number, Volume of units, stowage requirements, weight, centre of gravity

What is the correct understanding of the term "Isobar"?

An "Isobar" is the line showing the direction of the predicted path of a hurricane.

An "Isobar" is a line joining places of equal pressure.

An "Isobar" is a line joining places of equal temperature

An "Isobar" is the line of the cold front in a frontal depression

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

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

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

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

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

In ship's stability what is understood by the term "In stable equilibrium"?

The term "stable equilibrium" means when the cargo loaded in each hold is the maximum that hold can carry.

Stable equilibrium means the vessel is floating upright and has a positive GM

The term "stable equilibrium" means that the vessel complies fully with the International Loadline Rules

Stable equilibrium means the buoyancy force upwards and the force of weight downwards are equal and G and B are in the same vertical line

When may watertight doors in watertight bulkheads in tweendeck cargo spaces be open on board passenger ships?

Daytime only

At any time if watched by an authorized person

In ports only

During cargo handling only

During maintenance work in the engine room an access ladder and platform have been removed to allow work to be carried out on a pipe. When breaking for lunch what action should be taken to make the worksite safe?

Close off the area with rope or tape and put out warning signs that work is in progress.

Refit the access ladder and platform securely and remove it again after lunch.

Loosely refit the platform and ladder.

Leave one man to carry on working on his own and to warn anyone entering the engineroom that work is ongoing.

How should the Bo's'un prepare for anchoring?

The Bo's'un should prepare for anchoring by hoisting the anchor ball

The Bo's'un should prepare for anchoring by walking back the anchor to five shackles in the water

The Bo's'un should prepare for anchoring by applying the windlass brake, then disengaging it

The Bo's'un should prepare for anchoring by lubricating the spurling pipe

Which group of dangerous goods is generally considered as being the most hazardous for marine transportation on a General Cargo Vessel?

Toxic Gases

Infectious substances

Inflammable liquids

Organic peroxides

After clearing lines following the loading of cargoes such as Naphthas, Xylene, Toluene, Benzene, White Spirits and Kerosenes, it is necessary to wait for a specified period before taking manual ullages or samples. Why is this?

These are all "static accumulator" cargoes. As a cargo line is blown, electrostatically charged bubbles enter the tank and rise through the cargo, generating a high voltage at the surface. It is necessary to wait for a specified period of "relaxation time", to allow the charge to disperse, before introducing any potentially conductive object.

These are all cargoes which may form a wax on the surface of the cargo. As a cargo line is blown, bubbles enter the tank and rise through the cargo. If exposed to cold air as they reach the surface, a wax "carpet" may form across the whole tank. It is necessary to wait for a period of "levelling time" before allowing any air to enter the tank and taking any manual ullages or samples.

These are all cargoes with a high vapour pressure. As a cargo line is blown, the pressure in the ullage space above the surface of the cargo increases. It is necessary to wait for a period of "settling time", before opening the tank lids for sampling and gauging.

These are all cargoes considered to have high noxious vapour levels. As a cargo line is blown, the surface inside the tank is severely disturbed, releasing large quantities of these vapours. It is necessary to wait for a period of "adjusting time", before carrying out any open sampling or gauging.

What is the optimum cargo lashing angle against sliding?

Around 20?

Around 25?

Around 30?

Around 35?

The pressure inlet to a pressure gauge is varied from zero to full scale and back to zero again. The output (indicating pressure) versus true pressure is shown in the diagr.The non - coincidence(mis - match) of loading and unloading curve is due to internal friction in the instrument. What do we call this phenomenon?

Dead band

Threshold

Hysteresis

Resolution

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

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

When the weather is nice and the sea is calm

During daytime if the traffic is smooth

Whenever they want

Why should heavy-duty footwear, with non-slip soles and re-inforced toecaps, that fully cover the foot, be worn when working in the galley and storerooms?

To avoid the possibility of injury if a sharp or heavy object is dropped, or a hot liquid is spilled, or the floor becomes slippery.

Because footwaer of this type will support the wearer better and avoid aches and pains developing in the feet and lower legs.

Because you never know when you may have to go out on deck.

Because footwear of this type eliminates the possibility of fungal foot infections through exposure to moist and humid conditions as may be experienced when working around a galley range for prolonged periods.

What must be done once the cargo holds of a General Cargo ship have been opened to discharge logs?

Carry out mechanical ventilation

Keep the holds open for as long as possible before allowing anyone to enter

Commence discharging immediately

Measure oxygen levels prior to allowing persons to enter the hold

What do you understand by the expression Slave Controller

The controller is following a pre-set control sequens

The secondary controller in a cascade control system

Feed water controller

The controller is always working hard

What, by definition in the International Collision Regulations, is a "vessel restricted in her ability to manoeuvre"?

A vessel which through some exceptional circumstance is unable to manoeuvre as required by the Rules and is therefore unable to keep out of the way of another vessel.

A vessel which from the nature of her work is restricted in her ability to manoeuvre as required by the Rules and is therefore unable to keep out of the way of another vessel.

A vessel engaged in underwater work, such as the laying, picking up or servicing of a pipeline, or which is in support of diving operations, performing dredging and mine-clearance or is deploying or recovering a pilot.

A vessel which because of her draught in relation to the available depth of navigable water is restricted in her ability to deviate from her course and keep out of the way of another vessel.

During inspection of the fan spaces an access hatch between the delivery and return side of the fan space is inadvertently left open. What would be the most likely consequence of this situaqtion?

Chilled air would short circuit from the return to the delivery air side.

The delivery air side would become overpressurised.

The fan speed would be affected.

Air would short circuit from the delivery to the return air side.

When cross-flooding arrangements to correct unsymmetrical flooding and excessive heel angels in damaged condition are installed in passenger ships, what is the maximum angle of heel after flooding but before equalization?

10 degrees

15 degrees

20 degrees

30 degrees

How does a cement carrier discharge its cargo?

Using its own pumping system and equipment

By suction

Using shore side cargo gear

Using grabs

When is it good practice to check the pressure-vacuum valves?

After cargo transfer operations

Prior to cargo transfer

Before the next dry-docking

During cargo transfer operations

If the general alarm is sounding and evacuation of the ship is required. What is the best way to ensure that all passengers are aware of the situation?

Crew with designated emergency duties should proceed to the muster station to count all passengers in his section. If somebody is missing, report to their superior.

Use Public Address system to inform the passengers. Inform all passengers to report to designated area for head count.

Inform the passengers through Public Address system. Crew with designated emergency duties should proceed to their cabin section and search all cabins. Guide and evacuate passengers. If the area is inaccessible report to their superior or the bridge.

Alarm signal and Public Address system will be effectively, including head count at muster point.

What will occur within the cargo tank if Crude Oil Washing is undertaken with oil containing a substantial amount of water?

It will be impossible to separate the oil and water at a later stage

Ther will be inadequate drainage due to emulsification

An electrically charged mist may be generated

It will assist in the cleaning of the tank

What additional requirement must be observed if a cargo tank on a chemical tanker is to be cleaned by recirculation with a low flash or static accumulator product?

The tank must be inerted to less than 8% oxygen content.

All lids and other penetrations must be securely closed before recirculation is commenced.

The tank must already have been cleaned to Water White Standard to ensure no hazardous reaction with cargo residues.

The product must be allowed settling time within the tank before recirculation is commenced.

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

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

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

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

Water should not be used on any type of oil fire.

If something is broken or missing, what should the First Mate do?

He is to notify the Chief Officer

The First Mate is to get rid of the lifeboat

He is not to do anything

He is to replace or repair whatever is wrong

This online test consists of 90 random questions from CES 5.1 tests on a topic of your choice.