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Maison Tests en ligne CES Passenger 2nd-Off / 3rd-Off Test online CES 5.1 for 2nd-Off / 3rd-Off, Passenger vessel
Tests en ligne : Test online CES 5.1 for 2nd-Off / 3rd-Off, Passenger vessel
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Le test consiste en des questions aléatoires sur un sujet sélectionné.
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Which one of the listed requirements regarding lifeboat propulsion do not correspond to present regulations?
The engine shall be provided with an electric power starting system with rechargeable energy batteries
Every lifeboat shall be powered by a compression ignition engine using fuel with a flamepoint of not less than 44°C
Means shall be provided for recharging all engine-starting, radio and searchlight batteries
Water resistant instruction for starting and operating the engine shall be provided
How many rocket parachute flares are carried in each lifeboat?
4
Nil
12
6
Which one of the listed requirements regarding buoyant smoke signals do not correspond to present regulations? The buoyant smoke signal shall:
continue to emit smoke when submerged in water for a period of 10 seconds under 10 cm of water
emit smoke for at least 3 minutes when floating in calm water
not be swamped in a seaway
give a bright red light during the entire emission time
Hydrocarbon gas encountered in oil tankers cannot burn in an atmosphere containing less than approximately what percentage of oxygen (by volume)?
15%
11%
17%
13%
The method of extinction by smothering is based on this basis;
The fire is extinguished by interrupting the chain reaction, as it stops the transmission of heat by means of the action of chemical agents
The fire is extinguished by avoiding the contact between the fuel vapours and the oxygen
The fire is extinguished by avoiding the contact between the fuel vapours and the hot surface
The fire is extinguished by eliminating the heat so as to obtain a temperature at which the fuel doesn-t give off enough vapour
*In general, which of the following is the maximum length of a main vertical zone?
20 meters
40 meters
The ship-s breadth
The ship-s length
*Which of the following measures should be applied when hot work is to be undertaken in a harbour.
All the answers are good
To maintain a permanent fire watch of at least four persons
To have a hot-work permit
To use only intrinsically safe equipment in the area where hot-work is performed
What is the minimum number of fireman's outfits that should be carried on a cargo ship?
4
3
1
2
A Category "B" Chemical Cargo which has a melting point of more than 15° C. can be carried:
In tanks where the heating coils have been removed and supply and return steam pipes blanked off?
In tanks not adjacent to the ship-s shell plating having heating coils?
In tanks adjacent to the ship-s shell plating having heating coils?
In any tank onboard the vessel?
Give the meaning of the following symbol
Fire pump
Fire control plan
Gas detector
Emergency fire pump
The vessel is to anchor with Pilot onboard. Which of the suggested answers most accurately define the main duties of the Officer of the Watch on bridge?
Monitor the bridge equipment and keep the Master informed of all outputs
Assist the Master and pilot and monitor the ships position.
Follow Pilots orders and ensure the anchorage is carried out successfully
Follow the Master's orders at all times.
You are underway on a power driven vessel in open water when you observe a crossing power driven vessel approximately 8 miles away at 22 degrees on your port bow. Bearing steady, what action do you take?
Reduce speed to let him pass ahead
Call him on VHF before deciding on what action to take
Maintain course and speed with caution as he is the give way vessel
Alter course to port and pass around his stern
What can be used to reduce the effect of the state of sea-waves?
Vegetable / Fish Oil
Fuel Oil
Foam
Crude Oil
What would you say about a ship which is course unstable?
When you apply rudder, it will take time before she answers to it.
When you put rudder amidship, she will continue on a straight course.
It will maintain course no matter how much rudder you apply.
When you apply rudder, she will continue to turn when the rudder is put amidship, and may even increase rate of turn.
Which of the alternative methods of using a tug when escorting your ship through narrow waters do you think is the most effective if you lose steering power?
The tug-s bow against my stern, made fast with lines. By moving the tug to either side of my stern, this will help to steer the ship (figure 4).
Running free alongside, ready to be made fast (figure 2)
Made fast forward on either shoulder, ready to push (figure 3)
Made fast in a line at the bow (figure 1)
It is important that the brake holding capacity of a self stowing winch drum should not exceed the breaking strength of the wire or rope wound onto it. A certain percentage of extra strength is therefore recommended for the wire or rope over the brake holding capacity of the winch. So, for a winch of brake holding capacity of 60 Tons you would order a wire of breaking strength:
61 Tons
75 Tons
100 Tons
80 Tons
Are there any restrictions regarding length, breadth or draft in the Panama Canal?
There are no restrictions, but a pilot is required for the whole transit.
Restrictions regarding length and breadth exists. Draft restrictions vary with seasonal changes.
Tankers and military vessels are not accepted for transit.
Transits are left to the masters discretion, but the canal authorities will assign turn number and monitor traffic.
What is the purpose of the « SQUELCH » on a VHF transmitter/receiver?
" reduce the ""noise"" in the background"
Increase the range of the transmitter
increase the sound signal of the receiver
switch to another channel
You are starting to get low on water in the lifeboat. What should you do?
Drink urine
Collect rain water
Use sea water
Mix sea water with 50% fresh water
How much water would you allow per person as officer in charge of the lifeboat, following an abandon ship operation?
1litre immediately, followed by ? litre, if possible, per day (more in the tropics)
Nothing for the first 48 hours, then 1/4 litre, if possible, per day (more in the tropics)
Nothing for the first 24 hours, then 1 litre or more if possible per day (more in the tropics)
Nothing for the first 24 hours, then ? litre or more, if possible, per day (more in the tropics)
Identify this symbol:
Inertgas installation?
Emergency generator?
Escape gate?
Fire glass door?
Why do blunt knives cause accidents?
Because they will need to be held at a more shallow angle when cutting.
Because the blunt edge will contain grease particles.
Because they require more pressure to be used and are more likely to slip.
Because the handles are more likely to be loose.
What is the correct name of the part highlighted in the sketch?
Push rod
Piston rod
Crankshaft
Connecting rod
The typical current gain of a common emitter transistor is
10-200
500-5000
1-1000
1-10
What is the approximately boiling point of LNG at atmospheric pressure?
Approximately -160 C.
Approximately -170 C.
Approximately -140 C.
Approximately -150 C.
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.
Some of the valves in the system are marked ESD. What does this mean?
Emergency safety drop.
Estimated shut down.
Emergency shut down.
Estimated safety drop.
Which type of cargo tanks are almost exclusively applied to LNG ships and are rarely fitted to LPG ships?
Type "B" spherical tanks.
Independent type "A" tanks.
Self-supporting prismatic tanks.
Independent type "C" tanks.
In terms of instrumentation and measurement, what is an I/P Transducer?
A transducer that converts a known electric current to a pressure proportional to the current.
A transducer that increases a pressure signal which is too low to give the desired effect.
A transducer that converts a pressure to a proportional electric signal.
A transducer that is inverting a pressure signal.
When measuring the liquid level in the cargo tank of a liquefied gas carrier a number of different corrections may be necessary to get a true reading. Why do readings obtained from a float type ullage tape sometimes require a 'tape correction'?
The vessel may not be on an even keel when the readings are taken.
The length of tape in contact with very cold cargo vapours may contract.
The vessel may have a list when the readings are taken.
The float may become heavier and partly sink due to liquid cargo absorption.
Is it allowed to have animals on the car deck during a voyage?
Yes, if they are safely placed in a suitable vehicle
Only if the weather conditions permit
It is up to the captain to decide
No
What do you understand by the term Slewing?
Making the grab bucket/hook move up and down.
Making the complete crane move port and starboard.
Making the crane jib move up and down.
Making the crane jib move from side to side.
On a Container vessel, if there are isolated stacks of containers at bay 12, off-centre at bay 04 and at the extremity of bay 06, which of these stacks will require wind lashings?
Only the containers at bay 12
None
The stack at bay 06
All three
On a Container vessel, what can cause large loads in lashings when containers are secured to a lashing bridge?
The lashing bridge is flexible but the hatch covers are fixed, causing the lashings to go alternately slack and tight
The lashing bridge is fixed but the hatch covers move when the ship rolls and pitches, causing the lashings to go alternately slack and tight
Due to flexibility of the hatch covers
Due to inflexibility of the lashing bridge
LPG carriers rely heavily on the compressors fitted as part of the reliquefaction plant. Screw and reciprocating types are widely used. Which type of reciprocating compressor is most common as a cargo compressor?
Double acting, single stage, oil free compressor.
Double acting, single stage, oil lubricated piston compressor.
Double acting, two stage, oil free compressor.
Single acting, single stage, oil free piston compressor.
Some ships generate electrical power at 440 Volts, but then step up this voltage to supply specific electrical equipment. One common example, may be to feed a large bow thruster. Why is this done?
A large bow thruster will draw very large currents at low voltage. Being typically remote from the generator, significant voltage drops would occur at low voltage.
The shipyard could not purchase High Voltage generating plant at the time of manufacture, so they used what was available at the time.
Manufacturers can supply High Voltage bow thrusters at less cost, and the power factor is improved.
The overall ship's electrical load does not justify High Voltage generating plant. This method allows more power to be delivered to the bow thruster at low running cost.
A Bulk Vessel is to load a cargo of grain; pre loading calculations show that IMO stability criteria cannot be achieved; the vessel should do which of the following?
The grain surfaces in some or all of the cargo spaces must be secured
The cargo can still be loaded
An exemption certificate must be applied for
The vessel will be unable to load the cargo
What medium is used to calibrate the ODME?
Fresh water.
Gasoline.
Sea water.
Crude oil.
What basic information do we get from the pump system curve?
We get information about the pump's liquid flow.
We get information about the pump's ampere, delivery pressure and suction height.
We get information about the pump's lifting height and lifting flow.
We get information about the pump's suction height and liquid flow.
If the relief for the bridge lookout does not appear at the end of the watch, when required, what should be the actions of the existing lookout
The lookout should go down the accomodation to see where the relief is and make him/her go to the lookout position
He should inform the Officer of the Watch and wait for instructions
Inform the Officer of the Watch that you are going to call your relief.
Stay on lookout until the relief eventually arrives
On a RoRo vessel, what additional securing arrangements should be used when loading a vehicle on an incline or fixed Ramp
Double the normal lashings should be used
None
The Vehicle should also be chocked under its wheels
During bilge pumping operations the pump suction gauge indicates a high vacuum. What is the most likely cause of the high vacuum reading?
Leaking pump gland.
A glogged bilge strainer.
A hole in the suction line.
Broken suction gauge.
If it is found that a leakage from the gland of a centrifugal pump is excessive. The correct procedure is:
Fit oversize packing to the stuffing box.
Tighten the gland as much as possible until the leakage stops.
Ensure the bilge well to which it is draining is regularly pumped out.
Re-pack the stuffing box loosely with the correct size packing at the earliest opportunity.
A vehicle of length 4.85m; width 1.55m; weight 3200 kg. is to be loaded with a door-to-door clearance of 12cm and bumper-to-bumper clearance of 30cm. What would be its uniform load density?
0.0425 mt /sq. m.
0.372 mt /sq. m.
0.425 mt /sq. m.
0.469 mt /sq. m.
What is the reason for gassing up cargo tanks before loading?
Cooling down cargo tanks.
Removal of inert gas from cargo tanks.
Reduce CO2 content in cargo tanks.
Decrease oxygen content in cargo tanks.
When calibrating an pressure transducer we have to adjust both SPAN and ZERO. Please indicate in which order these adjustments should be done.
The order of adjustment is of no importance.
First Span adjustment and then Zero adjustment. After that Span setting should be checked gain.
First Span adjustment and then Zero adjustment. After that Span setting should be checked again.
First Zero adjustment and the Span adjustment. Then Zero should be rechecked.
Who must sign (and countersign) entries in a Cargo Record Book which documents cargo and cleaning operations on a chemical tanker?
Each completed operation shall be signed for and dated by the officer or officers in charge and, if applicable, by a surveyor appointed by the competent authority of the State in which the ship is unloading. Each completed page shall be countersigned by the master of the ship.
Each completed operation shall ner signed for and dated by the Officer or Officers of the Watch on which the operation took place. Each completed page shall be countersigned by the chief officer or the master of the ship.
Each operation shall be signed and dated by the officer or officers in charge and countersigned by the master of the ship. An entry and stamp shall be entered by the Responsible Person from the vessel's Management Office upon periodic inspection.
Each completed operation shall be signed for and dated by the pumpman or pumpmen instructed to carry out the task and countersigned by the officer in charge. A surveyor or superintendent may additionally sign to indicate that he has witnessed a particular operation.
What are you normally calling the compressor that collects the boil-off from the header connected to each cargo tank?
The fuel-feeding compressor.
The low-duty compressor.
The high-duty compressor.
The medium-duty compressor.
Which plan shows the position of the vertical and longitudinal centres of gravity for each cargo compartment of a Bulk Carrier?
Shell expansion
Line drawing
Vessel stability book
Capacity Plan
Over a period of a few hours of operation the main diesel engine speed gradually falls off. From the options given what is the most likely cause of this fault?
Water in a cylinder.
Injection valve opening pressure is too low.
Governor linkage broken.
Fouling of turbocharger intake filters.
What type of vessel is this and from what direction are you seeing it?
This is a vessel engaged in fishing other than trawling, making way through the water, with outlying gear extending more than 150 metres in the direction of the all-round red light. I am seeing her from astern.
This is a vessel engaged in fishing other than trawling, making way through the water, with outlying gear extending more than 150m in the direction of the all-round white light. I am looking at her port side.
This is a vessel engaged in pilotage duties at anchor. I am looking at her port side.
This is a vessel engaged in pilotage operations, deploying or recovering a pilot. I am looking at her port side.
What type of damage does a cargo of steel coils sustain when loaded on a General Cargo ship?
Chemical reactions between the steel banding and outer envelope
Bending
Tearing
Crushing and distortion
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
How often shall abandon ship- and fire drills take place on board passenger ships?
Weekly
Bi-weekly
At least two abandon ship drills and one fire drill every month
Monthly
What is the main reson for keeping engine lubricating oil viscosity within recommended limits?
To neutralise any acids that may form.
It is not important
To ensure the strength of the oil film is sufficient to keep lubricated surfaces apart.
To reduce system pressure losses.
What is the main problem associated with oil in a steam boiler water system?
It causes the gauge glasses to become dirty preventing the oerator from seeing the water level..
It causes corrosion of steel in the boiler.
It forms an insulating film on heat transfer surfaces with the risk of overheating.
It increases scale deposits in the boiler.
Most fuel oil separtors working on the centrifuge principle have an automatic start up and sludging facility. Which of the following actions would you expect to occur first during the start up sequence?
Sealing water supplied to bowl to prevent carry over.
Operating water drained from bowl to open it.
Operating water supplied to bowl to close it
Fuel oil supplied to bowl to fill it.
If a cargo leak occurs onboard a liquefied gas carrier it is likely that a 'white' vapour cloud will form. What makes the vapour cloud look white?
Condensation of nitrogen in the air.
Condensation of cargo vapour in the air.
Condensation of oxygen in the air.
Condensation of water vapour in the air.
What does the abbreviation "SBT" stand for in the context of the construction and layout of an oil tanker?
Segregated Ballast Tank
Specified Ballast Tank
Strengthened Ballast tank
Single Barrier Tank
What type of bomb search should you conduct to avoid panic when the credibility of the threat is in doubt and you don’t want to disrupt ship business?
Nominated officers search
External search team
Known hiding spot search
Crew search
Two conventional reefer vessels are being considered for a charter that involves the transhipment at sea, or at anchor, of a cargo of frozen squid, as weather permits. Both vessels have 4 holds, vessel A has high speed, 10 tonne deck cranes and vessel B has 5 tonne, union purchase derricks. Which of the vessels, if any, would be best suited to this type of operation?
Vessel B would be more suitable as the derricks will give more control of the operation at sea or at anchor.
Vessel A would be more suitable as the greater lift capacity of the cranes would allow bigger pallets to be transhipped.
Neither vessel would be suitable as none of the cargo handling equipment fitted could be used at sea or at anchor.
Vessel A would be more suitable as the high speed cranes would allow the operation to be completed more quickly.
As per SOLAS requirement fast rescue boats shall be constructed in such a way that:
They will not capsize
They are self righting
They are self righting or capable of being readily righted by its crew
They can be righted by 5 persons
How can you arrange for safe movement of passengers on ro-ro decks?
It is easy, only drivers are allowed to stay in the car during loading and unloading.
Passengers are responsible for their own safety while moving about ro-ro decks.
Passengers should be warned of vehicle movements when entering or crossing car or vehicle decks. They should preferably keep to walkways while moving about the ship.
Passengers should stay in their cars until loading is completed. They should keep to walkways when leaving the car.
After loading certain oil cargoes, known as 'static accumulator' cargoes, it is common to wait for the cargo to stop moving within the tank and therefore reach the point at which it will cease generating any further static electricity, before taking any samples or ullages. Which of the following is the typical length of time allowed for this process
120 minutes
30 minutes
75 minutes
2 minutes
What is the preferred method of accommodating expansion in cargo pipeline systems on gas carriers?
Use Viking Johnson expansion couplings.
Use sliding couplings.
Use expansion loops.
Use expansion bellows.
Which of these situations will cause undue delay to a vessel at her port of discharge?
Slow operation of hatch covers
Carrying out an off-hire survey
Carrying out an open-hatch condition survey
Asbestos mixed with the cargo
Why is it important in a RoRo vessel to ensure that cargo is loaded in a uniform way
because it looks better and image is important
because it makes it harder to lash the cargo correctly if you don't
To prevent high sheer forces and bending moments on the vessel during the loading / discharge operations
Many reefer vessels are fitted with controlled atmosphere systems (CA). There are a number of different systems available but generally they all work by introducing nitrogen into the cargo space. Select, from the options given, the main reason why nitrogen is generally the gas chosen for controlling the atmosphere in the cargo spaces of a reefer vessel.
Nitrogen is inert and there is no risk of creating a flammable mixture in the cargo space.
Nitrogen remains as a gas at all temperatures used in refrigerated transport.
Nitrogen displaces the oxygen in the cargo space and allows the respiration of the fruit to be controlled.
Nitrogen is the most plentiful gas available.
According to ISGOTT, which of the following indicates the approximate density ratio of undiluted gas, in relation to air, from a typical crude oil?
Twice that of the air.
0.8 times that of the air (assuming atmospheric pressure above 1000 mb).
1.8 times that of the air.
1.5 times that of the air.
Loading of a palletised cargo onto a conventional reefer vessel is almost complete. The final pallets are to be loaded into the hatch square pre-slung. Which of the options is the main reason for loading these final pallets pre-slung?
To allow the stevedores at the loading port to complete operations quickly.
To allow a quick start to cargo discharge without damaging any of the cargo.
So that the stevedores at the discharge port know which pallets to unload first.
To allow a tight stow at the completion of loading in the hatch square.
Prior to loading a reefer cargo it is good practise to carry out an 'ice test' of the temperature sensors within the cargo space. Part of the test is to immerse the sensors in a test bucket of known temperature, usually zero degrees Celsius as this is the melting point of ice. Which of the options is correct in relation to preparing the test bucket?
Insulated ice buckets should be filled with crushed ice purchased in bulk from a shore supplier.
Insulated ice buckets should be filled with ice produced in the vessel's low temperature chamber. A hole the exact size of the sensor should be drilled into the ice and the sensor inserted into the hole to give a rapid test process.
Insulated ice buckets should be filled with ice cubes approximately 2 centimetres square which have been made from clean distilled water.
Insulated ice buckets should be filled with ice cubes approximately 2 centimetres square and a small quantity of distilled water to produce an ice-water mixture. The ice cubes should be produced from clean distilled water.
Why do we use nickel-alloyed steel, stainless steel or aluminium in cargo tank construction on gas carriers designed for LNG and LEG?
Because these metals have a very low thermal expantion coefficient and do not burst of extreme low temperatures
Because these metals cost less than other metal
Because these metals have a high thermal expansion coefficient and do not burst of extream low temperatures
Because the weight on this metals are not so high than other metals
What is a proportional band
Any part of the total amplification
100/amplification
Amplification/10
Amplification/100
Why is it important to remove all traces of salt after washing the cargo holds of a bulk carrier?
Because salt will contaminate the next bulk cargo
If not done, surveyors at the load port will be unable to properly inspect the cargo holds
Because salt encourages the corrosion of steelwork
To prepare the steelwork for painting during the ballast passage
Foodstuffs which have not been cooked or prepared in any way may be described as which of the following?
Core
Roar
Pure
Raw
The high level water ingress alarm in number 1 hold of a Bulk Carrier activates in bad weather at sea; what would be the actions of a prudent Master?
The alarms could be faulty and should be ignored
Investigate when the weather improves
Sound general alarm, muster ships crew and transmit a Mayday call and message.
Assess all spaces for signs of damage if weather conditions permit
The fuel tank contents gauges onboard a vessel are of the air bubble and bell type. The gauges are calibrated for a different fuel type to the actual fuel in the tanks. When correcting the actual contents of the tanks from the gauge readings which of the parameters given in the options is the most important?
Fuel temperature.
Fuel pour point.
Fuel density.
Fuel viscosity.
What is the purpose of a draught survey on a bulk carrier?
To calculate the vessels lightship displacement
To calculate the vessels constant
To calculate shear forces at the bulkheads
To calculate the quantity of bulk cargo loaded or discharged
What is important to wear for all officers and crew when working on the ro-ro deck during loading and discharging?
Rain coat
Gloves
Goggles and safety shoes
Fluorescent vest/ working clothes
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?
1.5250 kg/l
1.5195 kg/l
1.5150 kg/l
1.4700 kg/l
What is very important to monitor when distributing cargo?
Only bending moments
You should always ensure the ship has sufficient stabilty at all times. Cargo shall preferably be distributed evenly to avoid heavy list/ trim
Shear forces and bending moments
Only shear forces
If a vessel is fitted with “free flow system”, what does it mean?
That the cargo is free flowing in all tanks at all times.
A vessel without ordinary bottom lines where the cargo flows from tank to tank through bulkhead valves.
The vessel is not equipped with own discharging equipment.
That the vessel is only able to load on gravity.
When can a partly loaded bulk cargo space be entered when the vessel is at sea?
At any time
On instructions from the CPO (Bosun)
In no circumstances except possibly in an emergency
For hatch cleaning purposes
Which of the following statements is correct when discussing warm clothing and passengers?
After being mustered, passengers will return to their cabins for warm clothing.
The crew will pass out warm clothing for passengers.
Warm clothing will protect passengers from drowning.
Warm clothing will protect passengers from hypothermia.
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.
In most colour coding systems for kitchen knives, what colour is used only for knives used in the preparation of raw fish?
Green.
Brown.
Red.
Blue.
Which of the cargoes given in the options would you expect to be most suited for loading onto a conventional reefer vessel designed with side loading doors?
Frozen tuna.
Break bulk bananas.
Frozen lamb carcasses.
Palletized fruit.
During a pre-loading survey prior to loading grain on a Bulk Carrier, very small amount of the previous grain cargo is found in a cargo hold; what is the significance of this situation?
The cargo hold can be cleaned while other holds are loaded
The affected cargo hold should be left empty
The vessel may fail the pre-load survey and be declared off-hire
The remaining cargo from the previous voyage can be ignored
At what latest time shall doors, side scuttles, gangway doors, cargo- and coaling ports and other openings which are to be kept closed watertight at sea be closed at the start of the voyage?
Before leaving the port
Before entering open waters
Before leaving the pilot station
Before leaving the berth
Give the meaning of the following symbol
Flame detector
Fire pump
Foam valve
Space protected by foam
Ce test en ligne se compose de 90 questions aléatoires issues des tests CES 5.1 sur un sujet de votre choix.