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Maison Tests en ligne CES Chemical tanker 2nd-Off / 3rd-Off Test online CES 5.1 for 2nd-Off / 3rd-Off, Chemical tanker vessel
Tests en ligne : Test online CES 5.1 for 2nd-Off / 3rd-Off, Chemical tanker vessel
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Le test consiste en des questions aléatoires sur un sujet sélectionné.
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On all UMS operated vessels and also on most other vessels the engine room is equipped with fire detectors. What requirements of testing and checking of the detectors are to be observed?
All the mentioned alternatives.
When testing detectors by suitable equipment (smoke and heat) check that the sensors self controlling system, e.g. a flashing control light etc. is functioning.
Check that the actual detector is giving appropriate signals to the central control unit and that all electric connections are in good order.
Check the detector with heat and/or smoke (in accordance with instructions in its manual)
*What is the term used to designate the work that may cause heat, sparks or flames and that cannot be performed if specific compulsory precautions are not taken in places where nearby flammable products could be present?
Hot work
Flammable work
Machinery labour
Specially hazardous work
*What is the minimum capacity "c" of the emergency fire pump ?
c not less than 40%C total main, but in any case not less than 250 m3/h
c not less than 20%C total main, but in any case not less than 250 m3/hNOTE: "C total main" is the total capacity of the main fire pumps of the ship
c not less than 40%C total main, but in any case not less than 25 m3/h
c not less than 20%C total main, but in any case not less than 25 m3/h
*In cargo ships of less than 1000 gross tonnage the number of fire hoses (not including any hose required in any engineroom or boiler room ) must be:
One for each 10 m length of the ship plus one spare
To the satisfaction of the administration
One for each 10 m length of the ship
Four plus one spare for each deck
The following information must be given on the SART:
Date of replacement of the battries
The date of replacement of the hydrostatic release unit
The name of the operator
The MMSI number sent
After discharging a Cat "D" Chemical inside "Special Areas" and performed stripping according to P&A manual, the tank washing water may be discharged as follows :
Kept on board until vessel is outside "Special Areas" therafter Alt "B".
Prewashed to shore facillity.
Overboard if the vessel is more than 12 miles off land and proceeding at a speed of 7 knots or more. The discharge need not take place below the waterline.
Dilute the remains by 10 times with water, then overboard if the vessel is more than 12 miles off land and proceeding at a speed of 7 knots or more. The discharge need not take place below the waterline.
In some trades cargo hoses are carried onboard. These hoses are normally checked and tested annually. Amongst other testes and checks, a pressure test is done. The latter shall be done up to the working pressure of the hose plus:
10 %
100 %
50 %
25 %
Two vessels are meeting each other in confined waters. What would be the effects of interaction between the two vessels as they approach each other?
The bows of the ships will be sucked together
There will be no effects in these circumstances
Each vessel will experience an increase in speed
The bows of the ships will be pushed away from each other
You are approaching shallow water with an Under Keel Clearance of 15%. What speed should you have when entering, and when should you slow down?
About 6-7 knots, slow down 30 minutes before entering
Reduce to slow or less in due time before entering
About 10 knots, slow down 15 minutes before entering
Maintain normal sea-speed, no need to slow down
The rudder is in the hard over position with the propeller stopped and the ship turning slowly. On a ship with a single fixed pitch right handed propeller and no thrusters, what can be done to make the ship increase the speed of turn without significantly increasing the forward speed of the ship?
Give the engines a short kick ahead
Give full astern on the engines until ship has stopped and then full ahead on the engines with rudder hard over
Give dead slow ahead on the engines and leave the rudder in the hard over position.
Give half astern on the engines as this will increase the rate of turn
SOLAS regulation requires that tankers of XXX ton dwt must be equipped with an emergency towing system?
20 000 dwt
10 000 dwt
30 000 dwt
50 000 dwt
Give the meaning of this symbol:
lifebuoy with line
lifebuoy with light
lifebuoy with light and smoke
lifebuoy
Which item among those below is included in the normal equipment of every liferaft ?
one searchlight which can work continuously for not less than 3 hours
one daylight signalling mirror with instructions
two painters of a length equal to not less than the distance from the stowage position of the liferaft to the waterline
one boat-hook
Which item among those below is included in the normal equipment of every liferaft ?
one searchlight which can work continuously for not less than 3 hours
two painters of a length equal to not less than the distance from the stowage position of the liferaft to the waterline
one boat-hook
a food ration for each person
Which item among those below is included in the normal equipment of every liferaft ?
two painters of a length equal to not less than the distance from the stowage position of the liferaft to the waterline
instructions for immediate action
one searchlight which can work continuously for not less than 3 hours
one boat-hook
*What is the meaning of this symbol ?
Lower liferaft to water
Release gripes
Lower rescue boat to water
Lower lifeboat to water
*Give the meaning of the following symbol
Secure hatches
Fasten seat belts
Fasten immersion suit belt
Fasten lifejacket belt
What is the meaning of this symbol ?
Survival craft portable radio
Radar transponder
Survival craft pyrotechnic distress signals
EPIRB
The Training Manual shall contain instructions and information on the life-saving appliances and the best method of survival. Which of following detailed explanations of crew duties in relation to emergency situations shall be contained therein?
The method and use of sea-anchors (drogues)
The use of oars and other propulsion equipment for survival crafts
The use of navigational equipment for survival crafts
Correct donning of fire protective clothing
Which of the following detailed explanations should be mentioned in the Training Manual ?
The use of navigational equipment for survival crafts
The methods of retrieval
The use of escape routes and other escape methods
The use of surface to air visual signals to be used by survivors
An alarm signal consisting of seven short blast followed by one prolonged blast is sounded by the ship's whistle and alarm bells. What are you to do?
Report on the bridge (deck crew) or engine room (engine crew) for further orders
Go to your lifeboat station
Go to your fire station
Go to (or remain in) your cabin and await further orders
The Training Manual shall contain instructions and information on the life-saving appliances and the best method of survival. The training manual shall contain detailed explanations of crew duties in relation to emergency situations. Which of the following tasks or duties shall be included in the manual according to present regulations?
Correct donning of the protective clothing.
Correct use of on-board communication equipment.
Correct donning of life-jackets.
The use of oars and sails for survival crafts.
Stainless steel tanks are sometimes required to be "passivated" especially after tank surface repairs have been carried out and aggressive cargoes are to be loaded. "Passivation" normally consists of:
Grinding off any corrosion spot with a grinding disc of about "80 grain"?
Spraying concentrated hydrofluoric acids in the tank and then wiping it off?
Applying 12 - 15% nitric acid on tank surfaces, either with a brush or spray; then washing off after 10 - 20 minutes using copious amounts of fresh water?
Cleaning the tank by application of caustic soda on all surfaces, then washing it off?
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.
Why is it necessary to have routine testing of the cooling water?
To detect the presence of contaminants in the water that may be injurious to the cooling system.
It is not necessary.
To ensure that the proper residuals of treatment chemicals, as specified, are maintained all time.
To trace leakage in the cooling water system.
Why are handrails in ro-ro decks painted?
To prevent personal injury
To facilitate cargo operations during the hours of darkness
To highlight deck walkways
To prevent contact with vehicles
By the International Convention for the Control and Management of Ship's Ballast Water and Sediments, oil tankers are required to have a ballast water exchange plan that involves replacing ballast taken onboard at the previous port. What percentage volumetric exchange must be achieved?
100%.
25%.
95%.
80%.
A General Cargo vessel is to load 200 tonnes of cargo on deck at No 1 Hatch; what are the main stability changes that will occur ?
The draught forward will increase, the trim will change and the metacentric height (GM) will probably decrease
The draught forward will increase, the trim will change and the metacentric height (GM) will probably increase
The draught forward will decrease, the trim will change and the metacentric height (GM) will probably decrease
The draught forward will increase, the trim will change by the stern and the metacentric height (GM) will probably remain constant
Why did they order another tug?
Because the bow thrust was useless in the strong wind.
Because they wanted to make sure that the ship could be safely turned.
Because the mates always receive their instructions prior to berthing and they all felt that another tug was needed.
Because the ship was going to berth with port side to the terminal.
For transporting a casualty with a fracture; If a Neil-Robertson stretcher is not available:
Wait for the Neil-Robertson strecher to arrive
A wide wooden board may be used
One person should lift the casualty using Fire-mans lift
Two persons should lift the casualty with great care
What should not be done when a container of liquid ammonia is on fire?
Restrict ventilation
Cool the container with water
Use a dry chemical fire extinguisher or carbon dioxide gas
Use self-contained breathing apparatus
Why is an inhibitor added into, for instance, butadiene?
To prevent the cargo producing heat.
To remove the oxygen and by that avoid a chemical reaction.
To minimise the tank pressure.
On the charter’s recommendation.
You have just started to load Dicyclopentadiene to 5 port and starboard cargo tanks, but no cargo seems to be coming into the tanks. What will you do?
Stop cargo - notify the Duty Officer and / or the terminal dependng on the agreed communication procedure. Re-check the lines, valves and connections carefully, bearing in mind that there might be a build-up of pressure. Advise as appropriate.
Open the main lid on the tank and use a flashlight to try and see if there is a problem with the pump or line inside.
Carefully slack the bolts back on the connections, working initially on the off-shore mainifold, to determine how far the pressure extends in the ship's pipeline system, to determine which valve is giving the problem.
Re-check all valves. Just say nothing and open it, if one is found closed.
Why are hypochlorite based treatments used on some sea water cooling systems?
To prevent biological growth in the system.
To reduce sediment build up in the system.
To prevent corrosion of the system
To increase the heat transfer capacity of the system.
What is the traditional seaman's saying that suggests the procedure to follow when carrying provisions around the galley and storerooms and up and down stairways?
"One hand for the ship and one for yourself".
"One hand for the Captain and one for the Cook".
"One hand for the ship and one for the stores".
"Keep your hands to yourself".
The Captain has complained about the catering department overtime and the amount of food being left over and wasted. The Cook suggests that he cooks a large amount of rice in one go, keeps it warm during service at the evening meal, places any left over in the refrigerator overnight and then re-heats it for the lunch-time meal it the next day. Is this acceptable practise? (Select the most correct answer).
Yes, it will minimise cooking time and cut down wastage. As the rice has not been mixed with any other ingredients, it will remain pure and fresh.
Yes, it will save overtime and cut down wastage. Being rice, it poses no health risk.
No, this is extremely dangerous and could lead to food poisoning throughout the whole crew.
Provided the rice is re-heated to a temperature of at least 37.8 degrees Celsius there will be no health risk. It is a practical approach to cutting down preparation time.
A mixed cargo consisting of cartons of frozen meat and drums of frozen orange juice is being loaded into the same reefer space. From the options given, select the reason that best describes why the drums of orange juice must be handled carefully.
There may be contact damage to the cartons of meat from the steel drums of orange juice.
There is a risk that the meat could taint the orange juice.
There is a risk of spillage from the drums of orange juice which may taint the meat.
There may be contact damage to the steel drums of orange juice from the cartons of meat.
For how long must you save the printouts from the ODME?
Until the end of the voyage.
3 years.
5 years.
3 months.
When preparing a cargo tank on a liquefied gas carrier for loading cargo following inspection of the tank a number of different steps are required. What is the first step required after such an inspection?
Inerting.
Drying.
Gassing up.
Cooling down.
A vessel with a large transverse GM will have which of the following rolling periods?
Fast abrupt rolling period to small angles.
A moderately comfortable period with medium angles of heel.
Slow period of roll either side of an angle of loll.
Very slow and to large angles of heel.
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.
While alongside at a repair berth a new section of seawater pipe has been fabricated in a shoreside workshop from drawings supplied by the vessel. During fitting of the pipe by ship's engineers it is noted that the pipe is too short leaving a gap of about 8mm between the flange faces. What action should be taken to remedy this problem?
The pipe should be returned to the shoreside workshop for modification or to be remade to the correct dimensions.
The ships engineer's should use extra long bolts and pull the flanges together
The ship's engineers should fit extra thick joints between the flanges to fill the gap.
The ship's engineers should manufacture a spacer piece to fit the gap.
Which of the following conditions could be the cause of an air conditioning system evaporator icing up?
High sea water temperature..
Too low suction pressure.
Low sea water temperature.
Too high discharge pressure.
On a container vessel what effects would exposure to anhydrous ammonia in moderate concentrations have?
Unconsciousness
Loss of memory
Death
Choking and possible loss of eyesight
Fully pressurised ships are fitted with type "C" tanks. What is the normal design pressure?
Design pressure of about 12 barg
Design pressure of about 2 barg
Design pressure of about 15 barg
Design pressure of about 18 barg.
On a Container vessel, what problem is associated with the use of twistlocks?
Freedom to slide when the vessel is rolling an pitching
Susceptibility to wear and tear
Fracturing during rolling and pitching in high seas
Left hand and right hand types exist, causing uncertainty whether a fitting is locked or open
Once a vehicle has been stowed on board what should duty crew members ensure?
That the duty officer is notified of the vehicle’s position
That a photograph is taken of any damages
That the vehicle is lashed immediately
That there is no sign of tampering with internal accessories
What is the first line of defence against ingress of water into a bulk carrier?
Pipe outlets
The shell plating
Machinery spaces
Hatch covers
Searches are often triggered by:
Lost baggage.
News stories of stowaways.
The receipt of a shipment of damaged stores.
An increase in security level by the Flag State.
From the options given, select the main reason why conventional mercury thermometers should not be used for taking pulp readings of a fruit cargo on a reefer vessel.
This type of thermometer is not sufficiently accurate.
This type of thermometer is difficult to calibrate.
This type of thermometer is not sufficiently portable.
The mercury may contaminate the fruit if the thermometer is broken while taking the readings.
Which electronic component does this graphical symbol illustrate?
Field Effect Transistor
Diode
Silicon controlled rectifier
Bipolar transistor
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 summer load draught
The tropical load draught
Maximum depth of the cargo hold
Moulded depth of the cargo hold
Furniture in stairways and corridors shall be kept to a minimum on board passenger ships, why?
Escape routes must be clear of obstructions and also due to fire protection
It is not allowed to sit in stairways and corridors
Due to fire protection
Passengers will most probably sleep in stairways and corridors if they are furnished
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.
When a ro-ro unit/cargo is damaged what should the duty officer do if he is not carrying a camera?
Sketch the damaged unit/cargo
Note the manufacturer's details
Make a damage report and rough sketch of the damage
Note the stowage location at which the damage occurred
What can be done to minimize the reduction of GM due to free surface?
Close all watertight doors.
Reduce the number of slack tanks.
Load liquids into only one tank at a time
Load fluids only into tanks with transverse subdivision bulkheads
What could be the reason for the magnetic compass to swing through large angles when the ship is rolling in a seaway?
The error due to deviation is large for that ships heading
The heeling error magnets are upside down and/or not in the correct position.
The Coefficient B determined by the Compass Corrector at the last dry-dock was not correctly calculated.
The induced magnetism from the earth's magnetic field is very strong in that area
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
On a Container vessel, what is the definition of Readily Combustible Solids, under the IMDG Code?
A substance that will heat up and ignite due to the ignition of another substance
Fibres, powdered, granular, or pasty substances that are capable of self-heating
Fibres, powdered, granular, or pasty substances which are dangerous if easily ignited by brief contact with an ignition source and if the flame spreads rapidly
Any solid that is capable of self-ignition
What type of search pattern is recommended in the IAMSAR Manual as most effective when the location of the search object is known within relatively close limits?
Parallel Sweep Search.
Sector Search.
Expanding Square Search.
Track Line Search.
When will a ‘D’ ring not be an effective lashing point?
When painted
When it is oil-stained
When it is covered in grease
When its retaining collar is torn
When carrying out repair or maintenance tasks involving hot work a hot work permit must be issued. Select the correct option from those given which completes the following statement. 'The permit for hot work…
..is valid for completion of the specific hot work tasks irrespective of the time taken.'
..can cover any additional hot work that arises during the completion of the task during the specified time period.'
..should only cover specific hot work tasks and be valid for a specified time period.'
..should only cover specific hot work tasks, be valid for a specified time period and be issued by the person carrying out the work.'
A small electric motor needs to be taken to the bottom plates for fitting to a domestic water pump. It is only just too heavy to be manually carried so is to be lowered using the engine room crane. Which of the options given would be a suitable strop to use for the operation?
Any piece of rope will do as the motor is only just too heavy to carry.
A wire strop which is rated for twice the required load but is out of certification.
Any strop which looks big enough to carry the load.
Any certified strop which has a safe working load greater than the weight of the motor.
What must be done before dock workers and stevedores are allowed on board a General Cargo vessel?
Number of persons on board noted
Security checks are the responsibility of stevedores
Identification and passes must checked and number of persons on board recorded
Only no smoking rule to be enforced
After discharging a high density cargo a serious crack is found in an upper ballast tank amidships of a Bulk Carrier; what must the Master do?
Note the dimensions of the crack and measure regularly
Proceed on ballast voyage without ballast in this tank
Repair with cement box or temporary welded patch until next drydock
Inform Designated Person Ashore (DPA) and call in Classification Society
Which special regulations cover transportation of grain on a Bulk Carrier?
IMO Grain Rules?
Port State Regulations?
Statutory Regulations?
Classification Society Rules?
Which vitamin is found only in meat and fish?
Répondre
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
When maintenance work is to be carried out on an electric motor driving a centrifugal water pump with automatic start, should you;
Ascertain from the senior watchkeeper if it is okay to start work, isolate the valves then commence work.
Set in local control, isolate the suction and delivery valves then commence work.
Isolate the suction and delivery valves then inform the electrician that you are starting work.
In conjunction with the senior watchkeeper and electrician, isolate valves, electrical supply, automatics and post 'Do not operate' signs before commencing work.
A General Cargo vessel on completion of the loading has a large metacentric height (GM); what will be the predicted behavior of the vessel in a seaway ?
A fast roll period and small righting levers (GZ Levers)
A fast roll period and large righting levers (GZ Levers)
A long roll period and large righting levers
A long roll period and small righting levers (GZ Levers)
Debriefing of an emergency drill:
focuses attention on the debriefer's feedback
expands the experience of all personnel
encourages crewmembers to focus on their duties
is most effective when held at a safety meeting
High level and high-high level alarms must be tested at the tank for proper operation within 24 hours of the start of cargo transfer. What acceptable alternative is there to this requirement?
There is no alternative to this requirement. The test must be conducted at the tank location and the audible and visual alrams sighted. The results must be logged accordingly.
That a programme of maintenance, including selective function tests, exists within the vessel's Planned maintenance System, provided all such level alarms are tested at least once within a period of three months.
That a function test is carried out on completion of cleaning operations following discharge.
That a function test is carried out by means of an automatic self-test and circuit monitoring facility within the alarm system.
High Voltage systems rely on the installed protective equipment being able to interrupt any fault in the system. Throughout the system, the fault level has been calculated, and under no circumstances must the system be modified to exceed this fault level. What is meant by fault level?
The amount of apparent power, that would be drawn from the generating plant, when a short circuit occurs at the bus bars.
The current level flowing into a dead short to earth at any point on the ship, directly from the High Voltage system.
The amount of apparent power that could flow into any fault at any point in the electrical network.
The current level flowing into a symmetrical short circuit fault between all three phases.
What is dunnage considered as under MARPOL 73/78?
Waste
Cargo residue
Marine Pollutant
Garbage
What may be the cause of black smoke from the funnel?
The fuel oil has not been adequately heated.
Incomplete combustion owing to wrong mixture of air and oil.
The fuel oil is of inferior quality.
An electrically operated turning machine is used during repairs while the engine is running.
What is understood by the term "Dew point" of the air?
The temperature at which condensation in the air forms into water droplets.
The temperature of the water vapour in a cloud.
The "Dew Point" is the point at the centre of an Anticyclone
All of the suggested answers
What damages a ship’s cargo holds?
Ship's vibrations
Heavy weather
Repeated stresses at a particular location
Which of the following cargoes must be maintained at the highest temperature when carried on a chemical tanker?
Acetic Acid.
Propylene Oxide.
Phenol.
Caustic Soda solution.
On a RoRo vessel, what is the Maximum Securing Load of web lashings?
60% of the breaking strength
65% of the breaking strength
50% of the breaking strength
When will a hatch pontoon’s side cleat need replacement?
When the cleat retainer is rusty
When the rubber washer is compressed and hardened
When the cleat retainer is distorted
When the cleat has sprung open at sea
A diesel engine cylinder head is to be overhauled but the spring compressor for removing the valve collets is found to be damaged and unusable. How should the task be carried out by ship's engineers?
Use a couple of screwdrivers to compress the spring and lever out the collets as this will save time.
Use a ring spanner to press down on the spring guide and pick out the collet halves once they are free.
Delay the work until a new spring compressor is available or fabricate a suitable replacement onboard if the work is urgent.
Using a hammer and a tube with an inner diameter slightly bigger than the outer diameter of the collets repeatedly strike the upper spring carrier until the collets pop out.
On modern chemical tankers, nitrogen is often used to achieve a super-dry atmosphere within a cargo tank prior to loading. Sometimes however, equipment delivering a special air supply is fitted and available for this same purpose. What does this equipment do?
It injects nitrogen into the air.
It supplies super-cooled air.
It filters carbon-dioxide out of the air.
It supplies de-humidified air.
What name is given to the pickled, fermented vegetable condiment that accompanies almost every Korean dish?
Korchee.
Kebchee.
Kalachie.
Kimchee.
In conjunction with which two sets of international regulations should the IMDG Code be read for security purposes?
Part B of the ISPS Code and Chapter II of the Maritime Transport and Offshore Facilties Act.
IMO NVIC 24 and 46 CFR 2.05
Chapter V of SOLAS and Annex II of MARPOL.
Chapter XI-2 of SOLAS and Part A of the ISPS Code.
On a conventional reefer vessel fitted with wooden hatch boards (gratings) which of the operations given in the options is the most likely to cause the greatest damage to the hatch gratings?
Loading or discharging break bulk fruit in cartons.
Loading or discharging palletised fruit using pallet jacks.
Loading or discharging break bulk (loose) frozen lamb carcasses.
Loading or discharging motor cars.
On a Bulk Carrier, what should be done if the cargo loading rate exceeds the ballast discharge rate thereby affecting hull stresses?
Notify the port state authority with whom the loading plan has been lodged
Notify the stevedoring foreman
Notify the terminal representative
Lodge note of protest with the terminal
When patrolling the car deck during a voyage you should observe the following elements:
Check that fire hoses are connected to the fire hydrants
Any abnormalities such as leakages, fumes, smoke or fire. Check if the lashings need to be tightened on lashed cargo.
heck if all the lights are switched off and the doors are closed
Smoke or fire
During ship to ship transfer operations it is common to use the terms 'primary' and 'secondary' fenders. 'Primary' fenders are:
Fenders fixed to the bow of an attending tug (if any)
Large fenders meant for floating between vessels and absorbing considerable impact. Example of fender size: L - 4.5 m. Dia. - 3.3 m
Tyre type fenders kept on deck for emergency
Small fenders which are suspended near either ships bow or stern to protect from inadvertent angular contact. Example of fender size: L - 2 m. Dia - 1 m
What type of buoy is this?
West cardinal buoy
Isolated danger
Safe water mark
East cardinal buoy
Ce test en ligne se compose de 90 questions aléatoires issues des tests CES 5.1 sur un sujet de votre choix.