Le test consiste en des questions aléatoires sur un sujet sélectionné.
Inmarsat Telex Service code ‘33’ can be used:
when the coast-station is disfunctional
to ask for ‘maritime enquiries
when technical problems are experienced with the Inmarsat-terminal
A « OSC » is :
A SAR coordinating centre
The master of a ship who coordinates on scene search and rescue operations
When cleaning cargo tanks with portable machines, how is the machine grounded?
The water jets impinging on the vessel-s structure form a pathway to ground.
Bonding wires are secured from the machine to a convenient location on deck.
The water supply hoses contain internal wires that act as conductors
The machines must maintain physical contact with the deck at the Butterworth opening.
What corrections must be applied to the echo sounder reading to compare the depth of water with the depth printed on the chart?
The distance between the pulse Transmitter and Receiver
Allowance for the ships speed
The grabline of a lifebuoy has a length of:
5 times the outer diameter of the lifebuoy
4 times the outer diameter of the lifebuoy
2 times the outer diameter of the lifebuoy
3 times the outer diameter of the lifebuoy
An air compressor is being refitted in the engine room. The compressor and motor are coupled using a flexible coupling and are mounted on a common 'skid' which fixed to the deck with resilient mountings. Which of the statements, from the options given, relating to the alignment of the motor and compressor is true?
As long as the two coupling halves are at the same height the flexible coupling will accommodate any horizontal misalignment or difference in the gap between the coupling faces.
Shims should be fitted between the motor and compressor feet and the skid to ensure correct vertical, horizontal and parallel alignment of the coupling halves before it is bolted up.
The compressor and motor can just be placed directly on the common skid as they will probably be closely aligned anyway.
Machines using flexible couplings and resilient mountings do not need to be aligned. That is why they have flexible and resilient elements fitted.
At what temperature is it recommended that frozen fish is stored?
Between 1 and 4 degrees Celsius.
What action would you take if confirmed boiler water test results showed that the pH of the water in the boiler was below 7?
Blow the boiler and top up again with untreated feed water.
Retest the water after increasing the treatment chemical dosage.
Nothing, this is an acceptable value for the pH of boiler water.
Retest the water after decreasing the treatment chemical dosage.
Why should wet cloths not be used for carrying hot cooking pans?
Because Health and Safety regulations prohibit the use of a wet cloth within 2.5 metres of a galley range.
Because they conduct heat quickly and may cause scalding.
Because a cloud of steam will be generated and the person carrying the pans may find it difficult to see where he is going.
Because the mositure will transfer to the pan and cool the contents.
What requires close attention during portable car deck inspections?
Abrasions over the decks' surfaces
Signs of cracks in way of deck supports
Which of the following food types or food components listed below is considered to be dangerous to health if consumed on a regular basis?
Moderate volumes of fibre.
Which of the following is typical for a feed-forward control system
We are controlling the process inlet side
The process is always oscillating
We can calculate the system response mathematically
It is easy to obtain a perfect control
The station bill contains the details of the emergency signals and:
each crewmember's emergency and regular duties
each crewmember's duties in an emergency
only the officers' duties in an emergency
crew and passenger duties in an emergency
The end covers for a heat exchanger are held in place by a number of brass studs and nuts. Which of the tools given in the options is best suited for removal and tightening of the nuts?
Adjustable shifting spanner
How often shall drills for the operation of watertight doors, side scuttles, valves and closing mechanism of scuppers, ash-chutes and rubbish chutes take place in passenger ships?
Occasionally the tie rods on a large slow speed diesel engine may fail in service. The mode of failure is usually a complete fracture of the tie rod due to excessive fatigue stress. Select, from the options given, the features of the surface of the fracture that would confirm a fatigue failure.
The surface of the fracture would be serrated in appearance and at right angles to the axis of the tie rod.
Part of the fracture surface would be uneven but smooth (burnished) with the remainder crystalline with part 'cup and cone' shape.
The surface of the fracture would be crystalline in appearance and at an angle of approximately 45 degree to the axis of the tie rod.
The surface at the fracture would be crystalline in appearance with a full 'cup and cone' shape.
Prior to commence loading, in what way would you best ensure a smooth technical operation?
Test/check the COW system?
Test/check the cargo pumps?
All the mentioned alternatives?
The vessel is steaming off the coast when the engine room informs the bridge it must stop engines immediately. Shortly afterwards they informed the bridge they would need a least three hours to fix it. Which of the following actions would be the most suitable taken by the bridge?
Display the NUC signal, maintain the watch and determine how the ship is drifting and the probable position after three hours.
Display the NUC signal and keep a good lookout
Display the NUC signal, maintain the watch and ask the Engine room to be a quick as possible
Display the NUC signal, maintain the watch and wait for further developments.
This graphical symbol is a logic gate. Which gate?
What name is given to the flat, flexible, round-tipped knife, used to remove baked food from trays and for spreading fillings?
When should you use safety goggles?
When you are filling in the engine room log book.
When you are tidying up in the engine room workshop.
When you are working with power tools or chemicals.
When are power-operated watertight sliding doors (class 3 doors) compulsory for all watertight doors aboard passenger ships?
Where the ship is fitted with through-going car decks
Where one or more doors are situated below deepest load line
When the ship is certified for more than 150 passengers
Where the ship has passenger spaces below the bulkhead deck
Which of the following detectors will you use for sensing if a watertight steel door is closed or open?
When is it safe for ship's personnel to enter the cargo tank of an LNG carrier to carry out routine maintenance and inspection?
Whenever the tank has been emptied of cargo as long as breathing apparatus is worn.
Only when the tank has been discharged and it is fully inerted.
Only after gas freeing and an atmosphere test shows 21% oxygen content.
Whenever a test of the atmosphere shows a methane content of less than 2% of the lower explosive limit (LEL).
Which of the options represents the best action to take when an item of machinery, which normally operates in automatic mode, is operated in 'manual' mode?
Have someone permanently stationed at the machine in case of an operational problem.
Keep the Chief Engineer informed of machines performance on an hourly basis.
Change over all other machinery to manual mode of operation.
Monitor the operation of the machinery on a frequent basis.
With two alternators running in parallel, you wish to disconnect one. The first step is to:
Make sure the load is evenly shared
Trip the main circuit breaker
Remove the load from the alternator to be stopped
Increase the frequency on the switchboard
On a Ro-Ro vessel what would be the effect of a small GM?
An adverse affect on seaworthiness
What extra precautions should be taken by the officers and crew if some of the passengers are disabled, i.e. using wheelchair, cane, blind etc.?
All passengers that will require extra assistance, also in case of an emergency situation/ evacuation, must be registered in order to allocate crew to assist them if needed.
Locate them in large cabins to ease their stay.
Passenger with some form for disability must travel with accompany, and live in same cabin or next door.
They must be placed in cabins on the same level as the muster station.
How is ‘Allowable Use Strength’ (AUS) calculated, for applying cargo lashings in the transverse direction?
Transverse accelerations, taken from the CSS Code, multiplied by the vessel’s natural roll period
Vessel’s moulded breadth divided by a factor of safety, taken from the CSM, multiplied by weight of cargo item
Width of cargo hold divided by a factor of safety, taken from the Cargo Securing Manual (CSM), multiplied by weight of cargo item
Transverse accelerations, taken from the Cargo Stowage and Security (CSS) Code, divided by 7 multiplied by weight of cargo item
What is the main purpose of 'gassing up' the cargo tanks of an LNG carrier?
To ensure a uniform temperature in the cargo containment system prior to loading.
To remove IG tank atmosphere with warm cargo vapour prior to loading the cargo.
To avoid a pressure rise in the liquid dome during loading.
To bring the cargo containment system to a temperature which will prevent excessive boil off during loading.
A lubricating oil having a high viscosity index number would normally be used in which of the following situations?
When the machinery operates at a very high temperature.
When the machinery operates at a high load.
When the machinery operates at a very low temperature.
When the machinery operates over a wide temperature range.
When conducting a risk assessment for a shipboard work activity, what are the two elements to be considered?
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.
The time available to complete the task and the resources to hand.
Why is burlap used to cover the bilge perforated plates?
To prevent small particles of cargo draining into the bilges
To protect the plates from stevedore damage
To prevent drainage into the bilges
To allow water and large particles of cargo to drain into the bilges
Some cargoes carried on liquefied gas carriers are toxic and are given a Threshold Limit Value (TLV) as a time weighted average (TWA). What does the TLV-TWA usually indicate?
It indicates the maximum vapour concentration that a person can be exposed to for 8 hours per day or 40 hours per week.
It indicates the maximum vapour concentration that a person can be exposed to for one hour.
It indicates the absolute maximum vapour concentration that a person may be exposed to at any time.
It indicates the maximum vapour concentration that a person can be exposed to before breathing apparatus is required.
What is the maximum quantity of cargo permitted to be carried in a single tank on a type 2 chemical tanker?
On the figure 4 possible definitions of the term "WINDLASS" are given. Which one is the correct one?
Windlass is given by A on the figure
Windlass is given by B on the figure
Windlass is given by C on the figure
Windlass is given by D on the figure
What determines the size of the "sump" in a chemical tanker's cargo tank?
It must be below 1/3000th of the total volume of the tank.
The foot of the pump must fit inside it with a minimum of 20 cm clearance all round from the pump casing.
When combined with the estimated residues on the bulkheads and in the associated pipelines, the quantity of residues remaining in the sump must be below the maximum quantity remaining after discharge as permitted by law.
The flow of residues into the sump must be greater than or equal to the pumping capacity of the pump when operated at stripping speed (calculated as 12% of nominal speed against 3 bar head pressure), with not more than 1.5 degrees adverse list or 0.1 degree trim.
In the formula 0.9LBD (tonnes) for the amount of high density bulk cargo that can safely be loaded in a cargo hold, what is the value of ‘D’?
The tropical load draught
Maximum depth of the cargo hold
Moulded depth of the cargo hold
When one ship is unmooring from another which is at anchor, the unmooring crew should be instructed to cast off lines:
As and when they think fit.
As and when the vessel remaining at anchor instructs them to do so.
As and when the manoeuvring vessel instructs them to do so.
As and when strain appears on individual ropes.
The image shows an arrangement of electronic components which is often used for a particular reason. What is this type of ciruit usually called?
Tab washers are often fitted to bolted assemblies to prevent the nuts and bolts slackening. For an assembly where the nuts are positioned at the top select the option which describes the correct method of locating the tab washers.
Bend the inner tab up against one flat of the nut and the other tab down over the edge of the component.
Bend the outer tap down over the edge of the component and leave the other tab flat against the component.
Bend the outer tap up against one flat of the nut and leave the other tab flat against the component.
Bend both tabs up against opposite flats of the nut.
Why do Bending Moment (BM) curves sometimes differ between the loading manual and loading computer?
Because BM values in loading computers are often taken at the bulkheads whereas loading manuals calculate stresses at intermediate points as well
Due to the age of a vessel
Because BM values in loading manuals are often taken at the bulkheads whereas loading computers calculate stresses at intermediate points as well
Due to steel replacements made during the life of a vessel
What special requirements applies to fire alarm signalling systems in passenger ships
Same requirements for Fire alarm systems applies to all ships
Remote control of fire doors and reactivation of ventilation
Centralized in a continuously manned control station with remote control of fire doors, Indication of open or closed fire doors
Fail safe, Centralized in a continuously manned control station, Remote control of fire doors, Indication of open or closed fire doors, Reactivation of ventilation, Detector status, Back up powered
Which of the following is the purpose behind holding a pre-cargo transfer meeting before discharging a number of chemical grades?
To enable the master to confirm that ship's personnel have been advised of the cargo operation requirements on the Vessel Particular Questionnaire mailed to the ship's agent prior to arrival in port.
To ensure that all personnel involved are aware of the details of the proposed cargo operation, the services required and the safety considerations.
To establish tank readiness and the status of any other pre-operation preparations in order for the master to be able to confirm a time of arrival.
To ensure that the responsibility for all items on the Ship/Shore Safety Checklist is assigned and understood before the vessel arrives alongside.
Why do we use stabilizers?
To increase the intact stability
To decrease the dynamic stability
To adjust the trim of the vessel
To decrease the rolling angle of the vessel
What is the normal name given to the fuel oil used for the ship's main engines?
What should be continuously monitored when carrying DRI cargoes?
Integrity of the inert gas blanket
Is it required to have supplementary emergency electric lighting on board ro-ro ships?
No, portable battery operated lamps shall be provided in alleyways and public spaces
No, reflective marking indicates the escape routes
No, passengers should bring their own flashlights
Yes, all passenger public spaces and alleyways shall be provided with supplementary electric lighting
What does ODME mean?
Oil Detecting - Master Evaluating.
Oil Discover Measure Equipment.
Over board Detecting Measure Equipment.
Oil Discharge Monitoring Equipment.
What type of cargo tanks are normally used for the cargo containment system for fully pressurised and semi-pressurised liquefied gas carriers?
Many medium and high speed marine diesel engines have connecting rods with an obliquely (angled) split in way of the bottom end which may have serrated faces. What is the main reason that the connecting rods are manufactured with this oblique split?
It reduces the inertial loads generated during operation as the connecting rod can be made lighter.
It allows the bottom end bearing to be large but still allows the piston to be withdrawn from the top of the cylinder.
It allows larger bottom end bolts to be used without risk of fouling the bottom of the oil pan.
It gives better access to the bottom end bolts.
The electric motor on one of your centrifugal pumps has for a period of time gradually been running at lower and lower Amp-load. The pump is still supplying water, but the pressure is reduced. Which of the below alternatives is probably the reason?
The pump is running at lower speed due to short circuit in the electric motor.
Inner diameter of impeller is bigger due to cavitations, or outer diameter reduced by erosion.
The pump has been more effective because the suction strainer has been removed.
The pump has suction from many places at the same time.
What is "DRAUGHT", in the figure?
Draught is D, in the figure
Draught is A, in the figure
Draught is C, in the figure
Draught is B, in the figure
Indicate the correct name for the part marked on the sketch:
Why must draught marks be read on both port and starboard sides of a bulk vessel when accurate draughts are required
The vessel marks may be incorrectly drawn
The vessel may appear up right but often will be found to have a slight list when port and starboard marks are compared
The vessel may be trimmed by the head
The draught reading on one side of the vessel sufficient
On a Container vessel, what is 'defrosting' associated with?
Containers carrying IMDG cargoes
Dry cargo ventilated containers
A three phase alternator is connected singularly to the main switchboard. The switchboard instruments show 400 Volts/500 amperes. With a power factor of 0.5 what will be the kW load?
On a General Cargo Vessel, what must be ensured when using ship's cargo gear in hot climates?
That the cargo gear register in up to date
That stevedores handle cargo gear in the proper manner
That all cargo gear is appropriately marked
That grease from wire falls does not fall onto cargoes being loaded or discharged
Which regulations apply to bulk carriers carrying products that contain oil?
Regulations laid down by individual classification societies
A new cylindrical brass bearing sleeve for a pump shaft is found to be a few millimetres too long for the housing and needs to be adjusted to the correct length. Which will be the best method to use to reduce the length of the sleeve to the correct dimension?
Remove the excess length using the ship's lathe.
Grind off the excess on a pedestal grinder for quickness.
Cut off the excess with a mechanical hacksaw.
Manually hacksaw off the excess and dress the end with a file.
You have just finished loading a cargo of Methyl Isobutyl Kentone. What must happen before the shore hose can be disconnected?
The drip-tray must be half-filled with fresh water.
All possible cargo residues in the line must be drained or cleared and any pressure relieved. The manifold valve and shore valve must be confirmed as closed.
Any pressure remaining in the hose must be relieved by rapidly slacking off the bolts on the connecting flange.
Any cargo residues in the line must be drained to the drip-tray. The manifold valve on the ship must be open to allow maximum drainage and only closed after the hose has been removed.
Very roughly, the gas mixture from Crude Oil can be represented by the pure hydrocarbon gas Propane for analysis and comparison purposes. What then is the approximate Lower Flammable Limit of Crude Oil when measured as a percentage volume in air?
A new reefer vessel is described as having 'Cargo spaces lined with stainless steel, refrigeration supplied by circulating cold air around the outside of cargo spaces, no hatches on deck and one light crane'. Which of the vessel types given in the options is the most likely type being described?
A vessel designed for the carriage of fish at very low temperatures.
A vessel designed for the carriage of specialised fruit.
A vessel designed for the carriage of orange juice in bulk.
A vessel designed for carriage of chilled meat products.
One of the tubes in a seawater cooled condenser is leaking due to being holed half way along its length. What is the most appropriate onboard repair method to be used from the options given?
Roll both ends of the leaking tube using a tube expanding tool.
Blank off the leaking tube at both ends with steel screw plugs after cutting an internal thread using a suitable tap.
Blank off the leaking tube at both ends using suitably tapered brass plugs.
Blank off the leaking tube by brazing a cap to each end of the tube.
What would be understood by the message "A yacht has capsized in heavy seas"??
The message means the vessel is taking in water.
The message means the yacht has been overturned in heavy seas
The message means the yacht has lost its Captain in heavy seas
The message means the vessel is experiencing heavy seas and may need assistance
Which is the "CAPSTAN", in the figure?
The Capstan is indicated by A, in the figure
The Capstan is indicated by D, in the figure
The Capstan is indicated by C, in the figure
The Capstan is indicated by B, in the figure
A general cargo ship is being loaded in Singapore for Hong Kong; which is the preferred order of loading for the following cargo types in the same hold?
Top stow: Steel slabs, Middle stow: Pallets Machinery parts, Bottom stow: CKD's (packaged cars)
Top stow: CKD's (packaged cars), Middle stow: Steel slabs, Bottom stow: Machinery parts
Top stow: CKD's (packaged cars), Middle stow: Pallets Machinery parts, Bottom stow: Steel slabs
Top stow: Pallets Machinery parts, Middle stow: CKD's (packaged cars), Bottom stow: Steel slabs
If a cargo has a litreweight 0f 1.5200 kg/l at 15 degrees Celsius and a correction factor of 0.001 per degree, what will the litreweight be at a temperature of 20 degrees Celsius?
Select the option which correctly completes the following statement. "A conventional reefer vessel operating with a controlled atmosphere plant must have cargo spaces which…
… have a gas tight seal."
… are fitted with variable speed fans."
… have the normal bulkhead and deckhead penetrations required for a reefer compartment."
… have a minimum number of deckhead and bulkhead penetrations."
On a traditional crude oil carrier, it is possible to arrange the valves in the bottom of a pumproom so that cargo flows from one bottom line to another. When more than one grade of cargo is carried, what is the operational safeguard requirement regarding these valves?
That two valves must be closed on each line or a 'spacer' removed to ensure no direct connection between tanks.
That there is two valve segregation.
That one valve segregation is maintained at all times.
There is no so special requirement.
here do you find detailed information and specific technical requirements for life-saving appliances?
Life-Saving Apliance Code (LSA Code)
What is common between a clover leaf and crinkle bar?
They are items of portable lashing equipment
They are parts of a loading ramp
They are tools used for tightening ro-ro lashings
They are items of fixed lashing equipment
A 3-phase cage rotor induction motor requires protection by a time delay overload trip. What is the reason for this?
It will tolerate fault conditions during start up
It will allow for inrush current or motor specific faults
This amplifier circuit is a common configuration used to amplify the difference in voltage between two input signals; in this case input 1 and 2. What is this amplifier called?
Darlington connection amplifier
What precautions should you take when washing down the galley area at the end of the working day?
All power to the galley range and other electrical equipment should be switched off and isolated; ensure you are suitably and safely dressed to avoid electrical, slipping and other hazards.
All electrical equipment should be switched on, to ensure it dries out quickly if it gets wet; remove your catering clothing, so that it does not get dirty and wet.
Wash only the deck, to avoid any risk of shock from electrical items, such as the range; wear shorts and rubber sandals ("flip-flops") to avoid transferring contaminants from your work clothes.
Cover all equipment and work benches with plastic sheeting; wash the galley deckhead, then work down the bulkheads and finally the deck, with fresh water above 65 degrees Celsius; wear heavy duty work clothes.
On a RoRo vessel, who is responsible for discussing the cargo plan with duty crew members?
The ship's cargo or duty officer
Are we allowed to load ammonia on inert gas?
We are not allowed to load ammonia on inert gas except when the inert gas is dry enough
We are not allowed to load ammonia on inert gas
We are allowed to load ammonia on inert gas if the inert gas has dew point less than 0oC
Ammonia can be loaded as long as the cargo tank is liquid free of last cargo
How to prevent liquid from getting into the cargo compressor?
By checking the pressure in the vapour line between the cargo tank and the cargo compressor.
By using a liquid condenser on the vapour line between the cargo tank and the compressor.
By checking the temperature on the vapour line between the cargo tank and the cargo compressor.
By using a liquid receiver on the vapour line between the cargo tank and the cargo compressor.
What is the main reason for adding inhibitors to some liquefied gas cargoes such as ethylene oxide and vinyl chloride?
To reduce the boil-off rate of the cargo.
To prevent polymerisation of the cargo.
To control the temperature of the cargo.
To reduce the toxicity of the cargo.
On a Container vessel, why should a vessel not carry left and right-handed twistlocks?
Because containers cannot be locked using both types of twistlock
Because there will be confusion as to whether or not containers are locked
Because international regulations do not permit it
Because the two types of twistlock have different strength ratings
What is the minimum Initial Transverse Metacentric Height (GM) allowed under the International Load Line Rules?
A ship's electrical system operates at 60Hz but when connected to shore supply it is supplied with 50Hz. Which of the following would you expect?
Electric motors will run at increased speed and will tend to overheat.
Generators are more sensitive to reverse power faults.
Electric motors will run at reduced speed and will tend to overheat.
Earth faults are more likely.
When should gangway nets be rigged?
When it is deemed necessary by the Master or the Chief Officer.
Between sunset and sunrise.
Whenever the gangway is regarded as unsafe.
Whenever the gangway is rigged.
Why is it impossible to have a lifeboat drill at present?
Because the crew will be busy heaving the anchor
Because the lifeboats are defect
Because the ship is leaving after sunset the following day
Because the anchor is damaged, and the ship is drifting away from its anchor zone
When a bulwark ladder is used for the pilot to step down onto the deck, such ladder shall have two stanchions provided, which are at least 40 mm in dia, between 70 and 80 cms apart, and at least 1.2 mtrs higher than the bulwark. Such stanchions shall be rigidly secured:
At the deck level and near the bulwark top level.
At or near the bulwark top level.
It does not matter where they are secured.
Fuel oil from a leaking fuel pipe has been collected in a drip tray under the boiler furnace.The oil is suddenly ignited by a backflash from the boiler burner.The boiler room is manned and the person present has the choice of various extinguishers. The fire is purely a surface fire. What would be the preferable extinguisher?
Any of the mentioned alternatives
How often shall crew members participate in fire drills?
Having boarded the liferaft, how do you release the painter?
Cut it with the axe provided
Cut it with the safety knife stowed on the exterior of the canopy close to the painter attachment point
Let go the quick release toggle
Wait for it to break as it is provided with a weak link
What equipment is provided in a liferaft to help you keep warm in cold weather?
The floor of the raft has a second layer which can be inflated to give additional insulation from the cold water
At least 10% of the rafts complement with a minimum of 2 thermal protective aids are provided
The floor of the raft has a second layer which can be inflated to help insulation, in addition to the thermal protective aids (10% of complement, minimum 2)
Thermal protective aids for each person
If Mouth - to - Mouth (M-T-M) ventilation by itself is unsuccessful and the casualty's heart stops, or has stopped beating, you must perform External Chest Compression (ECC) in conjunction with M-T-M. When performing ECC, where do you place your hand on the casualty's body?
The correct position of your hands are of no importance.
Place the heel of your hand on the top of the heart position. Cover the hand with the heel of the other hand.
Place the heel of one hand, two finger breadths above the bottom of breastbone. Cover the hand with the heel of the other hand.
Place the heel of your two hands on the top of the breastbone.