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家 在线测试 CES Chemical tanker 2nd-Off / 3rd-Off Test online CES 5.1 for 2nd-Off / 3rd-Off, Chemical tanker vessel
在线测试： Test online CES 5.1 for 2nd-Off / 3rd-Off, Chemical tanker vessel
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How many pyrotechnic signals to be in each lifeboat marked SOLAS A PACK?
10 Rocket parachute flares/ 12 hand flares / 5 buoyant smoke signals.
4 Rocket parachute / 6 hand flares / 2 buoyant smoke.
6 Rocket parachute / 6 hand flares / 6 buoyant smoke.
8 Rocket parachute flares/ 2 hand flares / 6 buoyant smoke signals.
In a liquid fire the surface of which is about 100m?,
the radiated heat can spread to exposures placed 200m away
the radiated heat is lower than the conducted heat
the radiated heat can spread to exposures placed 100m away
Flames are usually higher than the diameter of the fire
Tank top in engine room has a high quantity of oil residues floating around. When discovered, what action should be taken?
Open the overboard valve and start the bilge pump.
Start the fire pump.
Notify Ch.Eng., find cause of leakage, remedy the leakage and then immediately start cleaning of the tank top.
Apply foam to the tank top to minimise the risk of fire.
Apart from red, what other colour is frequently used for a dry powder extinguisher?
Green
Black
Blue
Yellow
In carbon dioxide fire-fighting systems for use in machinery spaces the fixed piping system shall be such that:
100% of the gas can be discharged into the space within two minutes
85% of the gas can be discharged into the space within two minutes
70% of the gas can be discharged into the space within one minute
100% of the gas can be discharged into the space within three minutes
Which of the following should NOT be used on an electrical fire?
Dry powder extinguisher.
CO2 extinguisher.
Halon extinguisher
Water extinguisher.
You are carrying out a search in a smoke filled compartment wearing BA. At what stage should you start to make your way out of the compartment?
15 minutes after starting to use the set as this leaves you with five minutes air left.
Wait for the appropriate signal on your safety line as the personnel outside will be keeping a track of the time you have spent inside.
Regularly check your pressure gauge and note how much air you used to reach your work area. Start to return when you have this amount left plus a reasonable reserve.
Wait until the BA set warning whistle sounds.
What alarm signal must be sounded by the alarm bells in case of fire?
Series of short blasts
A continuous signal
The signal which is stated in the muster list
One long blast followed by seven short blasts
In discussing the properties of chemical cargoes, what is the "Odor Threshold" of a product?
The smallest concentration, expressed in parts per million by volume in air, that can be detected by smell by most people.
The maximum concentration of a vapour that can be tolerated without permanent damage to the nasalmembranes.
The temperature at which the vapour pressure a substance is greater than the prevailing atmospheric pressure and vapour is then released into the environment.
The average concentration of a substance to which a worker may be repeatedly exposed for a normal 8 hour working day, 40 days a week, without adverse health effects.
On a Chemical Tanker suitable for carrying "special requirement" cargoes as per Chapter 15 of the IBC Code, such as Acrylonitrile, (most Chemical Tankers are), it is required that in addition to the SCBA sets used for firefighting, 3 additional SCBA sets (+ protective clothing) are carried for use in entering gasfilled compartments. These SCBA sets should be inspected:
At least once every 3 months by a responsible officer and once every 2 years by an expert?
At least once every year by a responsible officer and once every 5 years by an expert?
At least once every month by a responsible officer and once every year by an expert?
At least once every 6 months by a responsible officer and once every 3 years by an expert?
You are taking fuel on your vessel in the US when you notice oil on the water around your vessel. You are to stop taking fuel and:
Leave the area
Notify the US Coast Guard
Notify the Corps of Engineers
Begin clean up operations
What can lead to "Unlimited responsibility" (OPA-90)
Wilful misconduct and gross negligence
Wilful misconduct, gross negligence and violation of Federal Safety
Only gross negligence
Only wilful misconduct
What is the top priority if an incident occurs in US waters (OPA-90)
Safety of ship and crew
Any immediate action to prevent loss of time
Protection of the environment
Prevention of oil pollution
The passage of electrical current through the body may result in severe and sometimes fatal injuries. You are witness to man getting electric current through his body and is stuck to the dangerous area. It is impossible to switch off the current by any main switch. How to break the current safely?
Stand on dry insulating material and pull the person away with isolating material.
Call the electrician immediately.
Apply fish oil on your hands and cut the cords by the use of any metallic pliers.
Just take the casualty in your arms and pull the person away.
If a person has been overcome by fumes from toxic cargoes such as acetone cyanohydrin and has ceased breathing, you would:
Wait for a resuscitator to be brought from the ship's first aid locker and use it?
Place him in a stream of fresh air and let breathing restart by itself?
Do nothing until professional medical help arrives?
Immediately start mouth to mouth resuscitation?
Give the meaning of the following symbol
Hose box
Remote controlled fire pumps
Foam release station
Powder handgun
Do you think a ship's trim has any influence on steering abilities?
Yes, a ship usually steers better if trimmed by the bow
No, it is usually best to have no trim at all
Yes, the ship usually steers better if trimmed by the stern
No, the ship will have the same steering ability unaffected by trim
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
SCENARIO: ' All Fast ' has just been declared on completion of an underway mooring operation on both the constant heading ship (generally the discharging vessel) and the manoeuvring vessel (generally the offtake vessel). It is now decided that the former vessel should anchor. Who assumes responsibility for navigation from ' All Fast ' time to completion of anchoring time?
The vessel anchoring assumes responsibility
Both vessels assume equal responsibility
The more experienced Sen.Off.Deck assumes responsibility
The offtake vessel assumes responsibility
What is the meaning of this symbol ?
Secure hatches
Start air supply
Fasten seat belts
Release falls
What is one of the dangerous states a survivor may suffer from?
Broken limb
Cold
Influenza
Hypothermia
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
one rustproof graduated drinking vessel
one searchlight which can work continuously for not less than 3 hours
one boat-hook
Which item among those below is included in the normal equipment of every lifeboat ?
an EPIRB
a rustproof dipper with lanyard
one life-jacket for each person
a rustproof graduated drinking vessel
Which item among those below is included in the normal equipment of every lifeboat ?
two buoyant smoke signals
sea-charts and navigating equipment
one life-jacket for each person
an EPIRB
Which one of the listed requirements regarding the stowage of lifeboats and liferafts do not correspond to present regulations? (SOLAS II/13.3 - 13.6)
Lifeboats shall be stowed attached to launching appliances
Liferafts intended for throw-overboard launching shall be stowed amidships secured to means for transfer to either side
Davit-launched liferafts shall be stowed within reach of the lifting hooks unless adequate means of transport is provided
Liferafts shall be so stowed as to permit manual release from their securing arrangements
*At least how often shall rescue boats be launched with their assigned crew and manoeuvred in the water?
Every two weeks
Every week
Every three months
Every six months
What is the correct lifting technique?
Legs bent, back bent, using both back and leg muscles to lift
Legs straight, back bent, using back muscles to lift
Legs bent, back straight, using leg muscles to lift
Legs straight, back bent and twisted to the right or to the left while lifting
The "inner bottom" is the :
Compartment between the tank top and shell of the vessel
Tank top
Inner side of the vessel-s shell
Space between two transverse bottom frames
What action should be taken if the inert gas plant fails during discharge of a liquefied gas cargo?
Slow down the discharge rate until the IG plant is working again.
Open the atmospheric vents to prevent a vacuum in the cargo tanks.
Stop all cargo operations and inform the terminal.
Open the vapour return line from shore to prevent a vacuum in the cargo tanks.
How many rescue boats should be provided on passenger ships of 500 gross tons and above?
None
Two, and at least one of the rescue boats shall be a Fast Rescue Boat
One Fast Rescue Boat
Two, one on each side of the ship
The crane on a General Cargo Ship is designed for Grab Service with a hoisting load of 16 tonnes including grab weight. Grab weight: 8 tons, Grab cubic: 10 m3. You are going to discharge a cargo of dry minerals having a stowage factor of between 0.7 - 0
16 tonnes.
7 tonnes.
8 tonnes.
15 tonnes.
The DoS addresses the responsibility for the security of the water around the ship and the verification of increased threat levels.
TRUE
FALSE
.
What are the three volumes of the IAMSAR Manual?
I Organization and Management II Mission Co-ordination III Mobile Facilities.
I Planning and Preparation II Rescue Control III Reference
A Command and Control B Communications C Rescue Procedures
I Organization II Communications III Rescue Procedures
What are the more likely causes of damage to the cargo holds internal structure on a General Cargo vessel?
Damage may be caused by fork lift truck operations and loading/discharge of heavy cargo
Water entering hold in bad weather
Leakage of small amounts of cargo from drums
Lightweight cargo being loaded on top of heavy cargo units
Indicate the correct name for the part marked on the sketch:
Push rod
Camshaft
Crankshaft
Connecting rod
On a container vessel, why would it be difficult to extinguish a fire in a container containing chemicals?
Because water, if used, will always cause a chemical fire to flare up
Because containers containing chemicals are always inaccessible
Because heat is often produced due to chemical reactions within the cargo
Because chemical fires always spread instantaneously to other containers
Which of the following is a requirement on an oil tanker before entering any enclosded area containing inert gas generating equipment?
The oxygen level should be checked with an explosimeter
The atmosphere should be gas free and contain 20.9% oxygen
The atmosphere should contain at least 5% oxygen
The atmosphere should contain not more than 5% by volume of explosive and poisonous gases
What is the correct name of the tool shown in the sketch?
Pliers
Adjustable wrench
Chisel
Open end wrench
What is the main information we get from a Mollier diagram?
We get information about enthalpy, specific volume of vapour, liquid/vapour mixture, temperature of vapour when pressure is known and pressure in the cargo tank when liquid temperature is know.
We get information about enthalpy, specific volume of vapour, liquid/vapour mixture, temperature of vapour when pressure is known.
We get information about enthalpy, specific volume of the liquid and latent heat.
We get information about specific volume of vapour, liquid/vapour mixture, temperature.
On a cellular container vessel, what would make a cargo hold not ready to accept containers?
Damaged cell guides
Insufficient twistlocks
Indented tank top plating
Lack of dunnage
What is the correct location or working station for the deck watchman during cargo operations on an oil tanker?
In the cargo control room.
Available somewhere on the weather deck only.
Standing by in the crew mess.
On the cargo tank deck at all times.
Some gas carriers are designed to carry both LPG and LEG. What is the design temperature on the cargo containment system on a LPG/LEG carrier?
Design temperature of the cargo containment system for an LPG/LEG carrier is minus 103 degrees C
Design temperature of the cargo containment system for an LPG/LEG carrier is minus 48 degrees C
Design temperature of the cargo containment system for an LPG/LEG carrier is minus 89 degrees C
Design temperature of the cargo containment system for an LPG/LEG carrier is minus 162 degrees C.
What might safely be used to prevent a load swinging when lifted by a crane?
Personnel underneath the load, holding onto it and restricting its movement.
Guide or tag lines, tended from a safe location.
A cargo net.
Short, jerky movements on the ship's controls.
A heavy piece of machinery is loaded on deck of a container vessel, stowed across several flatrack containers. Select the most appropriate lashing method.
All lashings to be taken to the hatch top.
Some lashings direct to the flat rack and some to the hatch top, coaming and pillars.
All lashings to be taken to the flatrack lashing points.
All lashings to be taken to the hatch coamings, pillars and lashing bridges.
What sort of information must an inhibitor certificate contain?
Inhibitor name, number of cargo tanks inhibited, duration of effectiveness of inhibitor, expected duration of sea voyage and temperature limitation qualifying the lifetime of the inhibitor
Inhibitor name, number of cargo tanks inhibited, duration of effectiveness of inhibitor, expected duration of sea voyage and date the cargo tanks are inhibited
Inhibitor name, date inhibited and expire date of the inhibitor
Inhibitor name, concentration of inhibitor, duration of effectiveness of inhibitor, expected duration of sea voyage, temperature limitation qualifying the lifetime of the inhibitor and number of cargo tanks inhibited
On what criteria is the Threshold Limit Value (TWA) based?
The maximum concentration of a vapour to which a worker may be repeatedly exposed for a maximum of 12 hours per day, 5 days per week without serious health effects.
The concentration of a vapour expressed as a percentage of the oxygen content of an environment in which a fit human-being can work continuously for a period of 8 hours.
The time-weighted concentration of a substance to which a worker may be repeatedly exposed for a normal 8 hour working day and 40 hour week without adverse health effects.
The maximum concentration of harmful vapour to which a worker may be exposed for a period of 15 minutes up to 4 times within any 24 hour period without adverse respiratory effects.
What is a low location lighting system?
A system displaying the escape route from all cabins by light points in the ceiling, powered by battery
An illumination system for all corridors in cabin areas
A light system powered by battery or fluorescent signs mounted at deck level indicating the way to the nearest exit
An emergency illumination system that illuminates all deck areas to a minimum
In a low pressure auxiliary boiler, what would be considered to be the maximum allowable chloride level of the boiler water?
300 PPM.
1000 PPM.
50 PPM.
600 PPM.
SOLAS reg II-2 and IMO MSC.1/Circ 1321 requires that cargo pump rooms on oil tankers shall be mechanically ventilated, using non-sparking suction type fans. What is the minimum number of changes of air per hour that a ventilation system must deliver?
At least 15 per hour.
At least 30 per hour.
At least 10 per hour.
At least 20 per hour.
What is extracted rape seed meal, soya bean meal, cotton seed meal and sunflower seed meal?
Fishmeal
Seed cake
Kernel Expeller
Grain
Which IMO publication deals specifically with the construction and equipment of liquefied gas carriers?
The IMDG Code.
SOLAS.
MARPOL.
The IGC Code.
In the context of oil tanker operations, what is "clingage"?
Oil residues remaining in the bottom of a cargo tank after tank-cleaning
The resistance to flow in a pipeline during the discharge of an oil cargo
Electrostatically charged bubbles of air and moisture suspended in an oil cargo after loading
Residues remaining on the inside of a pipeline, or on the internal structure of a cargo tank after an oil cargo has been discharged
Methane/air mixtures in the range of 5.3 - 14% are flammable and have an auto ignition temperature of approximately 595 degrees C. What is meant by the term 'auto ignition temperature'?
It is the lowest temperature at which flammable gases are given off by the mixture.
It is the lowest temperature at which the mixture will ignite when a flame is applied to it.
It is the lowest temperature of the source of ignition required to ignite a flammable mixture.
It is the temperature at which the mixture will spontaneously ignite and continue to burn without an external source of ignition.
What should be done if a twistlock is found cracked at the base?
Use it to lock under-deck container stows
Have it repaired on board
Use it in the lowest tier on deck
Remove it from service
The diode shown performs which function?
Reference the transistor to +15V.
Provide an overload route for transistor current.
Allow Op Amp to top up +15V rail.
Return inductive current to supply at switch off.
Which of the following cuts of beef is taken from the shoulder?
Rump
Brisket
Chuck
Silverside
For what purpose is inert gas normally used in the cargo tanks of a liquefied gas carrier?
To maintain an inert atmosphere in the tanks during a loaded voyage.
To prevent an explosive atmosphere forming in the cargo tanks before gas freeing.
To pressure test the cargo tanks after repair work.
To help displace the cargo from the tanks during discharge.
"Passivation" is a restorative process periodically applied to stainless steel tanks on a chemical tanker. What effect does this process have on the steel surface?
It causes a chemical reaction, which produces a new inert Chromium Oxide layer on the surface of the steel.
It restores and reforms the passive Chromium Hydroxide surface layer.
It restores the surface steel to an even and smooth finish, thereby encouraging drainage during discharge.
It restricts active corrosion on the surface steel.
Which of the following contain gluten?
Cornstarch (maizena)
Barley meal
Potato flour
White flour
Which of the tools given in the options is the best one to select for cutting a new external thread on the end of a steel pipe?
Die nut.
Thread chaser.
Tap.
Split dies.
What must be specified when ordering gas detection equipment?
That the instrument complies with international regulations
That the instrument is suited for its purpose of application
That the instrument can measure flammable atmospheres
That the instrument can measure methane and hydrogen when used in low-oxygen atmospheres
What distinguishes vapour connections (headers) from liquid cargo connections on a ship's manifold?
Liquid and cargo connections actually appear the same, but the ship's personnel always attach a small board to the applicable flange, identifying the cargo to be loaded and indicating whether it is for the liquid or vapour hose.
Vapour connections are painted yellow with green end bands, are marked with the words "not for liquid" and have a small hole capable of receiving a stud on the flange face at the six o'clock position.
Liquid connections are always marked with the corresponding tank number, while vapour connections are marked with the letter "V".
Vapour connections are painted yellow with red end bands, are marked with the word "vapour" (or "vapor") and have a small stud located on the flange face at the twelve o'clock position.
In oil cargo quantity calculations, a specific figure derived from historical analysis of discrepancies between ship and shore figures is often considered when the master is comparing a load total against that shown on the Bill of Lading for the current operation. How is this figure referred to?
Vessel Discrepancy Index.
Vessel Experience Factor.
Ship's Calculation Reference Factor.
Intermediate Comparison Figure.
In the diagram which line would be the "AFT SPRING", if the vessel was port side alongside a jetty?
The Aft Spring is indicated by B, in the figure
The Aft Spring is indicated by C, in the figure
The Aft Spring is indicated by D, in the figure
The Aft Spring is indicated by A, in the figure
A bulk carrier is about to commence loading steel coils using ships cranes, what three important checks must be made?
Cabs cleaned and lighted, drivers regularly rested
Crane windows cleaned,cab heater on and no- smoking rule enforced
Crane controls tested, limit switches correctly set and SWL never to be exceeded
Planned maintenance completed, all paintwork in good condition and lighting checked
What actions should the Officer of the Watch take when the ship's steering gear fails?
Stop engines and display the NUC signal
All of the suggested answers
Call the Master and advise him of the situation
Request the engine room to check the steering gear
What does ODME mean?
Oil Detecting - Master Evaluating.
Oil Discover Measure Equipment.
Over board Detecting Measure Equipment.
Oil Discharge Monitoring Equipment.
The water content of inert gas is important when the gas is used for cargo tank inerting and drying operations on a liquefied gas carrier. Which drier arrangement for the inert gas will result in the lowest water content and dew point of the inert gas?
An absorption drier followed by a refrigerated drier in series can reduce the dew point down to less than minus 40 degrees C.
A refrigerated drier on its own can usually reduce the dew point to less than minus 40 degrees C.
A refrigerated drier followed by an absorption drier in series can reduce the dew point to less than minus 40 degrees C.
A refrigerated drier and an absorption drier operated in parallel can reduce the dew point to less than minus 40 degrees C.
Despite setting what appears to be the correct delivery air temperatures in accordance with shipper's instructions, large cargo loss claims can still occur when operating reefer vessels. Which of the options given is likely to help avoid the majority of these large claims?
By confirming that the shipper is supplying to a market that works in Fahrenheit or Celsius.
By confirming that the vessel plant is calibrated in the same temperature scale that the shipper is quoting.
By confirming the whether the shipper is referring to the delivery air or pulp temperature of the cargo.
By confirming the temperature scale that the shipper is using in his carriage instructions, Fahrenheit or Celsius.
Which vitamin is found only in meat and fish?
回答
How often shall watertight doors in main transverse bulkheads which is in use at sea be operated (tested)?
Daily
Every month
Every two weeks
Weekly
Eavesdropping and phone taps are examples of which threat to information security?
Terrorism
Sabotage
Subversion
Espionage
Which one of the following liquefied gas cargoes is considered as presenting a toxic hazard according to the IMO Gas Codes?
Butane.
Ethylene.
Propane.
Ammonia.
Which statement is correct for a fire door class "A-60"?
It is a requirement to keep class "A-60" fire doors closed for minimum 60 minutes
Class "A-60" fire doors shall be capable of preventing the passage of flame for minimum 60 minutes
Class "A-60" fire doors shall prevent the passage of smoke and flame and the average temperature of the unexposed side shall not rise more than 180
Class "A-60" fire doors must be closed within 60 seconds
What is the time limit for abandonment of passenger ships?
15 minutes from the time the abandon ship signal is given
There is no time limit
2 hours from the time the abandon ship signal is given
30 minutes from the time the abandon ship signal is given
When loading chemical cargoes in the United States, temperatures are often supplied in degrees Fahreheit. What does 60 degrees Fahreheit equate to on the Celsius scale?
37.8 degrees C.
0degrees C.
15.6 degrees C.
32.0 degrees C.
Some liquefied gas carriers are classed as fully refrigerated. What is the general meaning of the term 'fully refrigerated liquefied gas carrier'?
Any vessel for carrying liquefied gas at low temperature in semi pressurised independent tanks.
A vessel which is designed to carry liquefied gases at low temperature and atmospheric pressure between terminals with fully refrigerated storage tanks and a full onboard cooling plant.
Any vessel which has thermally insulated cargo tanks.
A vessel which can load a cargo of gas at ambient temperature and cool it down to a liquid state.
When considering instrumentation systems, what is a typical symptom of a fault with the span of an instrument?
100% output is accurate, but Zero-point is wrong
Zero-point is accurate, but 100% input is not giving 100% output
Zero-point and 100% are correct, but not at mid - range
Linearity problems
What is the maximum length of a fire zone on any deck?
50 meters
100 meters
40 meters
30 meters
You have just completed the discharge of a cargo of Lube Oil additive and are clearing the ship's lines to shore. What piece of equipment can be fitted between a drain cock and the air line to safely release any excess pressure before disconnecting the air line?
An expansion valve.
A reducer.
A quick-coupling.
A three-way valve.
What is the purpose of Material Safety Data Sheets?
To provide all personnel including emergency personnel with procedures for handling or working with that substance in a safe manner
To provide personnel in deck- and engine department with procedures for handling or working with that substance in a safe manner
To provide the safety officer with procedures for handling or working with that substance in a safe manner
To determine if the substance is flammable or not
Which is the "AFT BREAST LINE", in the figure?
The aft breast line is indicated by C, in the figure
The aft breast line is indicated by B, in the figure
The aft breast line is indicated by D, in the figure
The aft breast line is indicated by A, in the figure
What is most important for visual search purposes?
Use of standard search pattern
Design of special search pattern
Start a search immediately
Design of individual search pattern
Some liquefied gas carriers are fitted with nitrogen generating equipment, often of the membrane module design. What would be the expected purity of the nitrogen produced by such equipment?
87 to 89% pure nitrogen.
90 to 92% pure nitrogen.
100% pure nitrogen.
95 to 97% pure nitrogen.
What would you do before giving a boiler a “bottom blow”
drop the water level a couple of inches below normal
increase the oil pressure
raise the water level a couple of inches above normal
increase the oil temperature
What will happen when the ship arrives in Rotterdam?
The ship will receive fuel and diesel oil bunkers when it arrives in Rotterdam
The anchor will be tested when the ship arrives in Rotterdam
The navigation lights will be tested when the ship arrives in Rotterdam
The main engine will be tested when the ship arrives in Rotterdam
After discharge of a cargo of bananas there are a lot of cartons of condemned fruit on the deck. The vessel is not in a special area and is more than 100 miles from land. Select from the given options the best way to dispose of the condemned fruit.
Remove and retain all of the packaging including any inner plastic bags and dispose of the condemned fruit overboard.
Keep the cargo onboard until the vessel enters a port with suitable disposal facilities.
Dispose of the complete cartons of condemned fruit overboard and make an entry into the Garbage Disposal Log.
Keep the fruit for crew consumption and dispose of the packaging.
Liquefied gas is, by IMO, divided into different groups. What is the criterion for this division?
The boiling point, chemical bindings, toxicity and flammability.
The gas pressure.
The nitrogen and hydrocarbon content.
The hydrate formation.
When tuning a cascade control system, where do you start
The slave controller with the master controller in manual mode
The master controller
The slave controller with the master controller in auto mode
Both at the same time
A vessel which normally operates with the engine room in UMS mode is unable to do so because of defects to some of the critical alarm functions. What are the main considerations that the Chief Engineer must take into account when planning alternative arrangements to cover the engine room requirements until the defects are cleared?
A work rota is established to ensure at least one person is in the engine room at all times while the defects exist.
A work rota is established to ensure that normal routine maintenance is carried out on time in accordance with the planned maintenance schedule.
A work rota is established to ensure that the necessary repairs can be carried out as soon as possible.
A work rota is established to ensure full coverage of engine room watchkeeping duties and adequate rest periods for the engineering staff.
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