Heim Online-Tests CES Oil tanker Handling and Stowage Test for seamans about Cargo Handling and Stowage on Oil Tanker (CES v6.0)

Online-Test: Test for seamans about Cargo Handling and Stowage on Oil Tanker (CES v6.0)

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When in-service testing a hose used for cargo transfer on an oil tanker (and for which the elongation of the hose assembly when new was greater than 2,5 %), the maximum permitted elongation before the hose must be withdrawn from service should be:

Not more than 1,5 times the temporary elongation measured at the previous in-service test, as documented in the ship’s annual test record.

Not more than 1,25 times the temporary elongation measured when the hose assembly was last tested, as documented in the appropriate certificate.

Not more than 1,5 times the temporary elongation measured when the hose assembly was last tested, as documented in the appropriate certificate.

Not more than 1,5 times the temporary elongation measured when the hose assembly was new, as documented in the manufacturer’s certificate.

As per IMDG Code, the main criteria for drawing up classes for safe handling of hazardous substancesis on the basis of:

I don’t know.

Selective laboratory tests commissioned by the Committee.

Chronological order in which they have been assessed.

The type of hazard they present.

Any person who can assume overall charge of the ships crude oil washing operation must have:

They must have at least six months experience on tankers, be knowledgeable of the cleaning procedures and equipment applicable on board the vessel and be able to fully demonstrate understanding of the operation of the ODME equipment.

At least 12 months appropriate experience on oil tankers, have participated in at least two COW programmes and be fully knowledgeable of the contents of the Operations and Equipment Manual.

I don’t know.

They must have at least three months experience on tankers, have participated in at least six washing operations and be aware of the procedures associated with the completion of the Oil Record Book.

Substances, materials and articles shall be stowed as indicated in the Dangerous Goods List of the IMDG Code, in accordance with a series of stowage categories, which are designated as:

5 categories, labelled A-E.

Three categories, numbered I, II and III.

10 categories, lattered A-K (excluding I).

10 categories, numbered 1-10.

The term “consignee” is referred to as:

Any person or company which seeks to transport a consignment of cargo by sea.

Any person, organization or government that prepares a consignment for shipment.

Any person, organization or government entitled to take delivery of a consignment.

Any person or company responsible for the operation of a vessel which carries a consignment as freight.

The purpose of the decanting line between two slop tanks, where fitted, is:

To enable most of the recovered oil to be retained in the primary slop tank, while the cleaner part of the water will flow into the secondary slop tank, where it can be re-used as wash-water.

To avoid a build-up of static electricity during water washing, caused by air being drawn in as the primary slop tank empties.

To enable the filling of the secondary slop tank via the primary slop tank.

To enable both the primary and secondary slop tank to be filled without using the main cargo lines.

Where would you find the document relating to the “Condition of Freeboard Assignment” onboard?

With the Safety Construction Certificate.

With the Classification Records.

With the Loadline Certificate.

With the Structural Survey File.

A tanker in ballast, having recently left the discharge port is involved in a collision. The two vessels are still interlocked after the collision and a survey of the ships gives all crew members are safe and the damage is focussed to the vicinity of the impact. What should be the greatest concern at this time?

When the two vessels separate one (or both) of the vessels will have insufficient stability to remain afloat.

The vessels moving together will create even greater damage to their structures.

The possibility of pollution.

The ships moving together in the swell/seaway will cause a spark and consequently an explosion.

Master of every ship must provide:

Facilities to conduct training whenever required by the training officer.

A link between the shipboard training officer and the company training officer ashore.

The training during crews working hours only.

Proper rest to the crew after each training programme.

What are the three volumes of the IAMSAR Manual?

A – Command and Control; B – Communications; C – Rescue Procedures.

I – Planning and Preparation; II – Rescue Control; III – Reference.

I – Organization; II – Communications; III – Rescue Procedures.

I – Organization and Management; II – Mission Co-ordination; III – Mobile Facilities.

With reference to oil cargo calculations, API refers to:

American Petroleum Institute.

Approved Petroleum Inspector.

Average Petroleum Index.

Aggregate per Inch.

The longitudinal bending moments caused by cargo distribution on an oil tanker need to be taken into consideration:

Only during loading and discharging cargo.

Only when on ballast passage in heavy seas and when the vessel is pitching.

Only when on loaded passage in heavy seas and when the vessel is pitching.

During loading, discharging and on loaded passage.

If all indications are that a cargo has been received without damages, irregularities or short shipment and the phrase “apparent good order and condition” is entered on the Bill of Lading, then this Bill is this said to be:

A Due Title Bill of Lading.

An endorsed Bill of Lading.

A Bill of Lading completed for shipment.

A clean Bill of Lading.

With reference to oil tanker equipment, the abbreviation VECS stands for:

Vapour Ejection Control System.

Vapour Emission Calibration System.

Vapour Emission Control System.

Vapour Emission Control Standard.

As per SOLAS the Inert Gas System of an oil tanker must deliver the inert gas with a maximum level of oxygen of:

Not less than 8 % by volume.

Maximum 3 % by volume.

Not more than 5 % by volume.

Between 8 % to 11 % by volume.

As per the IMDG Code, “Marine Pollutant” is defined as:

A substance which is subject to the provisions of Chapter V of SOLAS 1974 as amended.

A substance which is subject to the provisions of Annex III of MARPOL.

I don’t know.

Any substance which is deemed hazardous to the marine environment.

What is the relationship between absolute pressure and gauge pressure?

Absolute pressure = gauge pressure.

Absolute pressure = gauge pressure – atmospheric pressure.

I don’t know.

Absolute pressure = gauge pressure + barometric pressure.

Oil tankers are subject to cyclical bending moments throughout their life as a result classification society rules require a specific minimum reduction in steel thickness to be maintained within “x” length amidships, where “x” is:

0,4 length.

I don’t know.

0,2 length.

0,3 length.

As per MARPOL, the formula for calculating the minimum draft amidships for crude tankers in ballast condition is:

2,0 + 0,02 L.

I don’t know.

2,0 + 0,015 L.

2,0 + 0,002 L.

When describing the characteristics of oil cargoes or oil/water slops, a “mercaptan” is:

A device fitted to a cargo pump which automatically alerts the operator once traces of water start to be detected during discharge.

A chemical additive blended with crude oil to inhibit the natural “rotten egg” smell associated with certain grades.

The component of hydrocarbon-based cargoes which is formed from Merolion Carbonized Tannin.

A colourless, odorous gas, with a smell similar to rotting cabbage and which is generated naturally by the degredation of natural organisms, as may be found where water has remained under oil for a long time.

What is the purpose of girders in the tank?

They support the stiffeners.

They transfer all sea forces acting on the plating.

They transfer all the cargo forces acting on the plating.

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

For a vessel proceeding enroute, located more than 50 nm from nearest land outside a special area and having in operation its ODME, the maximum instantaneous rate of an oily water mixture is:

30 litres per nautical mile.

300 litres per nautical mile.

60 litres per nautical mile.

I don’t know.

The approximate API gravity of Arabian Light Crude is:

30°.

40°.

27°.

33°.

The Reid Vapour Pressure (RVP) test is commonly used for measuring:

The absolute vapour pressure of the liquid at 37,8 °C.

The absolute vapour pressure of the liquid at 15,6 °C.

The absolute vapour pressure of the liquid at 38,7 °C.

The absolute vapour pressure of the liquid at 59 °C.

Oil tankers of 70 000 tons and above, delivered after 31 December 1979 shall be:

No requirement regarding number of slop tanks.

Shall be provided with at least 2 slop tanks.

I don’t know.

Shall be provided with slop tank.

Every oil tanker of 5 000 tonnes deadweight and above delivered on or after 1 February 2002 shall comply with intact stability whereby it must have a minimum GM (metacentric height) in port of:

Not less than 0,10 m.

Not less than 0,25 m.

I don’t know.

Not less than 0,15 m.

How much liferaft capacity should be provided on a conventional cargo ship of more than 85 metres in length?

25 % of the complement on each side of the ship.

100 % of the complement if it can be readily launched on either side of the ship. If it cannot be readily launched on either side, 100 % must be provided on each side.

75 % of the complement on each side of the ship.

50 % of the complement on each side of the ship.

During tank washing, besides maintaining the tank oxygen content below 8 % by volume, it should also be ensured:

That the tank is maintained at atmospheric pressure level.

That a negative pressure is maintained in the tank.

That a positive pressure is maintained in the tank.

That a minimum of 2,4 bar inert gas inlet pressure is maintained in the tank.

As per the US Code of Federal Regulations, the current Oil Transfer Procedures for a vessel carrying out discharge in US ports must be:

That the procedures be legibly printed in a language or languages easily understood by personnel engaged in the transfer operation and permanently posted or available at a place where crew members can see and use them.

That the Master of the vessel engaged in a transfer shall, before commencing any transfer operation, ensure that all crew members involved in that operation shall be familiar with the applicable operating and emergency procedures and be capable of communicating in a common language with terminal operators.

That the procedures be available in hard-copy or electronic format to the Supervising Officer in a language with which he is familiar.

That the procedures be printed in the English and Spanish languages and permanently posted in the wheelhouse of the vessel.

Segregated Ballast Tanks on an oil tanker may best be defined as:

Cargo tanks which may be used for the carriage of ballast.

Cargo tanks which each have their own individual pumps, are fitted with independent piping systems and are served by unconnected ventilation arrangements.

Tanks which are completely separate from cargo or fuel oil systems, being permanently allocated to the carriage of ballast and fitted with their own pumps and associated piping.

Cargo tanks which may be used for ballast, where the lines are not connected to the Oil Discharge Monitoring Equipment.

Which of the following is a definition of a petroleum product which is “non-flammble”?

Petroleum having a flash point of 80 °C or above, as determined by the closed cup method of test.

Petroleum having a flash point of 60 °C or above, as determined by the closed cup method of test.

I don’t know.

Petroleum having a flash point of 100 °C or above, as determined by the closed cup method of test.

In context of cargo oil depth and ullage measurements, the abbreviation UTI stands for:

Ullage Topping Instrument.

Uniform Tank Indicator.

Uncorrected Tank Innage.

Ullage Temperature Interface.

The approximate Upper Flammable Limit of Crude Oil when measured as a percentage volume in air is:

12,6 %.

15 %.

2,2 %.

9,5 %.

According to ISGOTT, in which of the following situations, when measuring vapour space oxygen content of a cargo tank, can a electrochemical sensors in gas measuring instruments become damaged or poisoned?

When the sample containing hydrocarbon/inert gas has a hydrogen sulphide content greater than 2 %.

When the sample containing hydrocarbon/inert gas has a hydrogen sulphide content greater than 1 %.

When the sample containing hydrocarbon/inert gas has a hydrogen sulphide content greater than 3 %.

I don’t know.

During an audit, adherence to the company cargo handling procedures can best be demonstrated:

By requesting that an audit takes place during cargo operations.

By providing a summary of out-turn figures for the auditor.

I don’t know.

By being able to provide comprehensive and verifiable documentary records of cargo operations.

A “Pellistor” is:

It is the electrical sensor which detects low pressure in an Inert Gas generating control system.

It is a sensor that can be used in a combustible gas indicators to detect and measure flammable gas concentration as a percentage of its lower flammable limit.

I don’t know.

It is the common term applied to the metal, ceramic or other heat-resisting material which can cool even an intense flame below the temperature required for ignition, as utilised in a flame arrester.

When documenting Crude Oil Washing operations in the Oil Record Book, which of the following must be included in the sequence of entries?

The ullage in the tank at the commencement of washing.

The average oil cargo temperature during the washing operation.

The ship’s speed during the washing operation.

The method of establishing that the cargo tanks were dry.

Besides danger of vapour inhalation by crewmembers, if Hydrogen Sulphide is present in high concentrations in crude oil, it can also cause:

Polymerisation.

Acid build-up.

Settling and layering.

Corrosion.

DG placards shall be located on a freight container:

One on each end and one on each side.

One on each side (only).

One on each end (only).

One of the back end and one on one of the sides (only).

With reference to ship stability, the letters “TPC” stand for:

Tonnes per Centimetre Immersion.

Tonnes per Centimetre.

Tipping Perimeter Centre.

Trim per Centimetre.

When discharging dirty ballast from an oil tanker at a high flow rate with main cargo pumps, the instantaneous rate of discharge of oil is calculated by formula:

Instantaneous rate of discharge (l/nm) = oil content (ppm) · flow rate (m3/h) / speed (knots) · 1 000.

Instantaneous rate of discharge (l/nm) = oil content (ppm) · 1 000 / flow rate (l/h) · speed (knots).

Instantaneous rate of discharge (ml/nm) = oil content (ml/nm) · flow rate (l/m) / speed (knots) · 100.

I don’t know.

The purpose of the demister unit within the Inert Gas System is:

To remove water from the IGS stream.

To remove sulphur oxides.

To cool the inert gas.

To prevent overheating.

The ODME printed record for ballast water discharge overboard from the cargo piping system on oil tankers operations must be retained on board for a minimum period:

Of 3 years.

I don’t know.

Of 2 years.

Of 1 year.

Oil tankers built and delivered after 6th July 1986 may have wing ballast tanks that extend throughout the cargo tank length. In this case the design feature against pollution in the event of the bottom being breached is that:

Additional level sensors and alarms must be fitted to give early warning of oil outflow.

Steel thickness in the bottom area must be a minimum of 1,36 times that otherwise required by construction regulations to minimise the extent of any breach.

The cargo tank levels must be set so that hydrostatic pressure will stop oil outflow.

The pressure vacuum valves must be capable of complete sealing, and the integral strength of the tank such that a total vacuum is capable of being maintained in the breached compartment, thereby preventing outflow of oil.

Depending on the API, an error measurement of 0,1 degree Fahrenheit in a tank containing 300 000 barrels of oil will result in which of the following volumes?

50 barrels.

150 barrels.

300 barrels.

25 barrels.

When cargo discharge reaches stripping levels on an oil tanker, it is necessary to reduce the inert gas pressure so as to:

Comply with the requirement of MARPOL Annex VI.

Avoid over-capacity in the IG generator.

Avoid locking the cargo pump impeller.

Minimise blowback.

After passing through the scrubbing tower of an inert gas system, the approximate level of carbon dioxide in the inert flue gas should be:

3 %.

21 %.

1 %.

13 %.

The inert gas system shall be capable of delivering inert gas to the cargo tanks at the rate of:

No such requirement.

At least 125 % of the maximum discharge capacity.

At least 135% of the maximum discharge capacity.

At least 150 % of the maximum rate of discharge capacity.

Your vessel is in an area of restricted visibility. You hear this sound signal. What does it mean?

That there is a vessel in distress nearby.

That there is a vessel engaged in underwater operations in the vicinity. She has divers down.

That there is a vessel at anchor in the vicinity.

That there is a vessel aground in the vicinity.

“Door to door” shipment is covered under:

A Multi-Phase Bill of Lading.

A Through Bill of Lading.

A Destination Bill of Lading.

An Ocean Bill of Lading.

How many square metres does the IAMSAR Volume 3 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 500 square metres.

Approx 5 000 square metres.

Approx 50 square metres.

Approx 50 000 square metres.

Special Areas as per MARPOL are:

Specific geographical sea areas in which special mandatory measures for the prevention of sea pollution by oil are required.

Specific geographical sea areas, designated as Marine Conservation Areas by the United Nations, in which any discharge from the cargo area of an oil tanker is strictly controlled.

All sea areas within 50 miles from the nearest land, where that coastal state is a signatory to MARPOL.

Limited ocean and sea areas, listed under the OPA-90 Act, inside which the discharge of oil is prohibited and the penalty for doing so is an unlimited fine and jail sentence.

With reference to oil cargo characteristics, “cloud point” is:

I don’t know.

The temperature at which an oil product begins to emit vapours which can be observed in a spectroscope due to the volume of solid particles extracted during evaporation.

The depth within a cargo above which no waxy solids are entrained.

The temperature at which a liquid hydrocarbon begins to congeal and take on a cloudy appearance, due to the bonding of constituent paraffin compounds.

The purpose of the “mud box” fitted on a tanker is to:

Collect ships waste and water mud when ballasting and de-ballasting.

Catch the mud from the anchors and cables and deposit these at the windlass.

Restrict any particles and solids entering the pipeline system.

Catch spills when connecting the discharge or loading hose.

After efficient scrubbing of inert flue gas what would be the concentration of sulphur dioxide be:

25 ppm.

100 ppm.

50 ppm.

10 ppm.

As per the IMDG Code, an “article” is referred to as:

A device that contains a dangerous substance or mixture of substances.

A device that is responsible for initiating a dangerous reaction.

A form that contains important information about a hazardous substance.

Something that is packed within a freight container.

When tank cleaning hoses are tested for electrical continuity, they must display a reading of:

Not greater than 6 ohms per metre length.

I don’t know.

At least 8 ohms per metre length.

Not more than 10 ohms per metre length.

An oil tanker with a defective Oil Discharge Monitoring Equipment may be allowed by a Port State Authority to trade for:

One ballast voyage before proceeding to a repair port.

I don’t know.

The vessel will be detained until ODME is rectified.

Two ballast voyage before proceeding to a repair port.

When describing the characteristics of oil cargoes or oil/water slops, a “mercaptan” is:

I don’t know.

A chemical additive blended with crude oil to inhibit the natural “rotten egg” smell associated with certain grades.

The component of hydrocarbon-based cargoes which is formed from Merolion Carbonized Tannin.

Fluid driven eductors operate on Bernoulli’s principle, which states that:

The discharge rate is inversely proportional to the pressure applied in the drive inlet.

The increase in pressure at the eductor inlet is inversely proportional to the decrease in pressure as measured at the discharge orifice.

The speed of a moving fluid increases as the pressure in the fluid decreases.

The volume of a fluid increases as the pressure in it decreases.

The maximum permitted oxygen content in the inert gas supply when inerting a cargo oil tank prior to gas freeing is:

8 % by volume.

12 % by volume.

5 % by volume.

I don’t know.

To correctly report an oil spill in US waters:

The master of the vessel responsible for the spill must advise the Environmental Protection Agency National Incident Reporting Center (or the appropriate regional office) within 2 hours of the incident being reported to that person.

The person in charge must first report the spill to the National Response Center or, if not practicable, to the Environmental Protection Agency regional office or local US Coast Guard Marine Safety Office. This must be done immediately that person has knowledge of the spill.

The person responsible for the spill must report preliminary details to the appropriate State Police within 30 minutes of the accidental discharge taking place.

I don’t know.

Which of the following best describes what the wax content of crude oil is?

The percentage of wax, expressed as a percentage, remaining in an oil product after distillation.

The percentage, by weight, of paraffinic wax found in a representative sample of the crude oil.

I don’t know.

The observed volume percentage of waxy deposit found in a cargo tank after discharge in relation to the total volume of cargo previously carried.

For security purposes, the IMDG Code should be read in conjunction with the:

Chapter XI-2 of SOLAS and Part A of the ISPS Code.

Part B of the ISPS Code and Chapter II of the Maritime Transport and Offshore Facilities Act.

I don’t know.

IMO NVIC 24 and 46 CFR 2.05.

If W = Displacement, L = length, B = Breadth, D = depth of vessel, Cb = Block Coefficient, Cw = Coefficient of Waterplane, RD = Relative Density, then:

W = L · B · D · Cb / RD.

W = L · B · D · Cb.

I don’t know.

W = L · B · d · Cw.

Crude Oils required by MARPOL to be specifically listed in a tanker’s Crude Oil Washing manual as unsuitable for COW are:

Those with highbenzene content.

Those with high pour point of viscosity.

Those with high basic sediment and water content.

I don’t know.

The one particular hazard to be taken care against, when using portable steam driven blowers for ventilating oil cargo tanks is:

That plastic extension tubes should not be used, in case the top collar overheats and melts, causing the tube to drop into the tank.

That prolonged use may cause the core material of the fan to heat up to a point where it may become a source of ignition.

That the steam outlet must point vertically upwards to avoid possibly burning the legs of passing personnel.

That the exhaust does not vent into the cargo tank, in order to prevent possible build-up of static electricity.

Within the Oil Discharge Monitoring and Control System, an “overboard discharge control” is defined as:

A device which automatically initiates the sequence to stop the overboard discharge of the effluent in alarm conditions and prevents the discharge throughout the period the alarm prevails.

A system which monitors the discharge into the sea of oily ballast or other oil-contaminated water from the cargo tank areas.

A facility which prevents the initiation of the opening of the discharge valve or the operation of other equivalent arrangements before the monitoring system is fully operational.

A system which receives automatic signals of oil content, flow rate, ship’s speed, ship’s position, date and time.

Crude oils may be considered to consist:

A natural mixture of carbon and sulphur isomers.

A refined blend of hydrocarbon compounds and sulphur extracts.

A mixture of carbon extracts and naturally occurring wax.

A natural mixture of simple and complex hydrocarbon compounds.

If for some reason a vessel does not comply with a Classification Society’s requirements, what can a surveyor issue to the vessel enabling it to sail to the next port or for a period of time?

A Notification of Deficiency.

A revised Class Notation.

A Condition of Class.

A notification of Detention.

The examples of Aromatic Hydrocarbons will include:

Benzene, Toluene and Xylene.

Carbon Dioxide and Hydrogen Peroxide.

Propane, Butane and Pentane.

Hydrogen Sulphide and Carbon Monoxide.

What is this?

The United Nations stamp used for endorsing international shipping certificates.

The United Nations Packaging symbol used for Dangerous Goods.

The identification stamp placed in the passport of a stowaway by an Immigration Officer to indicate that his or her nationality is “unknown”.

The “Unitary Nomenclature” symbol placed alongside the name of a dangerous cargo in shipping documents to indicate that it appears on the list of approved international shipping names.

What is the purpose of girders in the tank?

They transfer all the cargo forces acting on the plating.

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

They transfer all sea forces acting on plating.

They support the stiffeners.

The scantling draft of an oil tanker fitted with segregated ballast tanks is:

The minimum draught amidships when in ballast condition.

The maximum draught determined by the Loadline Rules.

The draught for which the structural strength of the ship has been designed.

I don’t know.

After the last entry being made, the retention period of an oil record book on board must be:

Not less than 5 years after the date of the last entry.

I don’t know.

Not less than 3 years after the date of the last entry.

1 year.

The purpose of permanent continuous coamings fitted from side to side across the decks near the accommodation of an oil tanker is:

To keep deck spills away from the accommodation and service areas.

To reduce the effects of racking stresses.

To push the sea water shipped onto the deck over the sides of the ship.

To increase the strength of the deck structure.

When conducting a risk assessment for a shipboard work activity, the two elements to be considered are:

The chance of an incident re-occuring and the potential effects of an loss.

The available manpower and their experience in this type of work.

The potential severity of harm and the likelihood that harm will occur.

I don’t know.

Why is it important to have good relationship on-board a vessel?

It encourages crew to extend their contract.

It will prevent accidents from happening.

It leads to better work performance and positive atmosphere among the crew.

Crew comes to know each others problems.

According to 33 CFR 156.170, for oil tankers trading in US waters, the minimum requirement for testing of cargo transfer hoses and associated piping system are:

That no leakage occurs under dynamic fluid pressure of less than 1,5 times the maximum allowable working pressure.

That no leakage occurs at the nominal anticipated working pressure.

That no leakage occurs under static liquid pressure of at least 1,5 times the maximum allowable working pressure.

I don’t know.

With reference to the exposure of “vapours” from oil cargoes, “Short Term Exposure Limit” value is determined by:

The airborne concentration of a toxic substance averaged over any 10 minute period, usually expressed in ppm.

The airborne concentration of a toxic substance averaged over any 15 minute period, usually expressed in ppm.

The airborne concentration of a toxic substance averaged over any 25 minute period, usually expressed in ppm.

The airborne concentration of a toxic substance averaged over any 30 minute period, usually expressed in ppm.

The «Cargo Handling and Stowage, Management, Oil Tanker» subject provides both theoretical and practical knowledge on safely working with electrical equipment. Mastery of this material is a key indicator of an employee’s competence in their role aboard a vessel. Cargo handling and stowage on an oil tanker involve the processes of loading, unloading, and storing liquid cargo, such as crude oil or petroleum products. These operations require meticulous planning, strict adherence to safety protocols, and compliance with industry regulations to ensure the safe and efficient transportation of liquid cargo.

Version: 4.1, 5.0, 5.1, 6.0.0, 6.0.8, 6.0.10.
Test type: STCW.
Department: Cargo Handling and Stowage.
Level: Management.
Vessel type: Oil Tanker.

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