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Главная Онлайн-тесты CES Gas tanker 2nd-Off / 3rd-Off Онлайн-тест CES 5.1 для 2nd-Off / 3rd-Off, Gas tanker vessel
Онлайн-тестирование: Онлайн-тест CES 5.1 для 2nd-Off / 3rd-Off, Gas tanker vessel
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Тест состоит из случайных вопросов по выбранной теме.
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What is the main characteristic of the weak link in a float-free arrangement for inflatable liferafts?
be of sufficient strength to permit to pull the painter from the container and the inflation of the liferaft
be of sufficient strength to break at a depth of at least 4 m and release the liferaft from its berth
be of such a strength to be cut by any person with a jack-knife
be of sufficient strength to keep the liferaft alongside the ship when dragged at a maximum speed of 3 knots
The operating mode of a pyrotechnic signal depends essentially on:
Instructions or diagrams printed on its casing by the manufacturer
The fact that the user is on board a liferaft, a lifeboat or ship
The weather conditions of the moment
A definite standard process
Mention some important thoughts for what you have to do when you recognise that fire break out onboard.
Commence fighting the fire, call the persons around the fire and join the fire squad
Report to bridge or duty officer, actuate the fire alarm, call the persons around the fire and join the fire squad
Go to the lifeboat start the motor then call the duty officer and commence fight the fire
Report to bridge or duty officer, actuate the fire alarm, organise and commence fighting the fire
A vessel where the engine personnel are in charge of all technical installations on board are due for a voyage to a cold climate area. Are any special precautions to be implemented with regard to fireline/pumps and use of same?
Implement special routines for starting fire pumps (e.g. local start/stop operation) to avoid the pumps are started due by a mistake, resulting in filling up the system unnecessarily.
All the mentioned alternatives.
Instruct the personnel in routines to prepare the fireline system, e.g. closing all branches and the consequences of not draining the system after use.
Drain all firelines in areas that may be exposed to freezing temperature.
*What is the inherent danger in using halon to extinguish an extensive fire?
Depletion of oxygen in the air?
Development of explosive gases?
Depletion of the ozone layer?
Development of toxic gases?
*When the fire alarm signal is sounded every member of the ship's crew shall immediately proceed to their assigned fire station. Which one of the following signals is used as fire alarm signal on board cargo ships?
Three short blasts followed by three long blasts, then followed by three short blasts on the ship's whistle and alarm bells
Seven short blasts followed by one long blast on the ship's whistle and alarm bells
One long blast on the ship's whistle and alarm bells followed by seven short blasts
Intermittent signals on the ship's alarm bells
How often must a crew member participate in a fire drill?
Once every 6 months
Once every two weeks
Once every month
Once every year
What is the status of the rules of the SOLAS convention?
Mandatory.
Should be consulted when the vessel is in distress.
Supplementary to classification rules.
Must be regarded as guidelines.
An Oil Record Book, Part 1,shall be provided to every ship of 400 tons gross tonnage and above to record machinery space operations.Out of below mentioned operations, it is compulsory to record:
Purification of HFO.
Discharge of water from Aft, Peak Tank.
Bunkering of bulk lubricating oil.
Transfer of oil from settling - to daytank.
Give the meaning of the following symbol
Primary means of escape
C class division
B class division
A class division
The maximum rudder angle on your ship is 35 degrees. Do you think this is the angle that the rudder is most effective?
No, the most effective rudder angle is about 25 to 30 degrees, this is because the rudder is "stalling" at 35 degrees angle
No, the rudder is most effective at small rudder angles
No, the rudder is most effective at angles between 10 and 20 degrees
Yes, the rudder is most effective at max angle
Your vessel is moving in Panama Canal waters. When must a regular engineer be on watch in the engine room?
When the chief engineer is attending the engine room.
When requested by the pilot.
Not necessary to be in the engine room if the unmanned engine room status is practiced and alarms have been checked.
At all times.
Give the meaning of the following symbol:
davit launched liferaft
liferaft
muster station to davit launched liferaft
muster station to liferaft
Give the meaning of the following symbol:
muster station to davit launched liferaft
inflate liferaft
davit launched liferaft
lower liferaft to water
The thermal insulation provided to the wearer of an anti-exposure suit is sufficient to ensure that the wearer's body core temperature does not fall at a rate of more than:
0.5°C per hour after the first 1.5h immersion in calm water at a temperature of 5°C
1.5°C per hour after the first 2,5h immersion in calm water at a temperature of 5°C
1.5°C per hour after the first 0.5h immersion in calm water at a temperature of 5°C
1°C per hour after the first 2h immersion in calm water at a temperature of 5°C
*Which among the following list is particularly required for a totally enclosed lifeboat ?
windows on both sides can be closed watertight and opened for ventilation
handrails inside for persons moving to their seats
hatches positioned so as to allow launching and recovery operations to be performed without any occupant having to leave the enclosure
self-bailing arrangements
Which item among those below is included in the normal equipment of every rescue boat ?
a food ration for each person as described in SOLAS convention
sufficient buoyant oars or paddles provided with thole pins or crutches
anti-seasickness medicine sufficient for at least 48h and one seasickness bag for each person
one copy of the prescribed life saving signals on a waterproof card
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 knife of the non-folding type having a buoyant handle and a lanyard
one boat-hook
one searchlight which can work continuously for not less than 3 hours
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 boat-hook
two painters of a length equal to not less than the distance from the stowage position of the liferaft to the waterline
one whistle or equivalent
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
What is the meaning of this symbol ?
Lower lifeboat to water
Start engine
Start water-spray
Start air supply
*Give the meaning of the following symbol
Close rescue boat ventilation aperture
Secure hatches
Secure liferaft canopy closing device
Secure doors in the ship's side plating
*Give the meaning of the following symbol
Indicates manual starting direction of the engine
Start engine
Reverse engine
Start water spray
Give the meaning of the following symbol
Survival craft portable radio
Survival craft distress pyrotechnic signals
EPIRB
Radar transponder
What is the meaning of this symbol ?
Line-throwing appliance
Survival craft pyrotechnic distress signals
Rocket parachute flares
Radar transponder
How much water would you allow per person as officer in charge of the lifeboat, following an abandon ship operation?
Nothing for the first 24 hours, then 1/2 litre per day (more in the tropics)
Nothing for the first 48 hours, then 1/4 litre per day (more in the tropics)
1/2 litre immediately, followed by 1/4 litre per day (more in the tropics)
Nothing for the first 24 hours, then 1/4 litre per day (more in the tropics)
*At least, how often shall life boats be launched with their assigned operating crew aboard and manoeuvred in the water?
Every week
Every three months
Every month
Every two weeks
Breathing apparatuses is an important piece of equipment for being able to fight a fire onboard a vessel. What routine precautions to be observed with regard to use and maintenance of such equipment?
That personnel having a beard are not selected as smoke divers.
All the mentioned alternatives.
That the equipment always to be kept cleaned,checked and bottles are recharged immediately upon use, and frequently inspected.
That personnel that are appointed as smoke divers, primarily are given a shore based proper basic education and training.
A pilot ladder shall, to prevent twisting, be fitted with 'battens'. The lowest batten shall be the 5th step from the lower end of the pilot ladder. At what intervals should there be further battens upwards on the pilot ladder?
It does not matter where the battens are fitted.
At intervals not exceeding 15 steps.
At intervals not exceeding 9 steps.
At intervals not exceeding 12 steps.
How will you calculate transverse accelerations?
Multiply the values taken from tables 2, 3 and 4 of the Cargo Stowage and Security (CSS) Code
Multiply the values taken from tables 3 and 4 of the Cargo Stowage and Security (CSS) Code
From formulae given in the Cargo Securing Manual (CSM)
Rule of thumb and past experience
What is the purpose of an expansion valve in a refrigeration system circuit?
To control the cooling water temperature through the condenser.
To control the cargo hold temperature.
To control the flow rate of liquid refrigerant to the evaporator.
To control the suction pressure at the compressor.
What is a digital signal?
A signal indicating Revolutions per minute (RPM)
A signal used by multimeters to measure resistance.
The reading of a multimeter when indicating voltage, current or resistance.
A signal with discrete levels such as 0 = "low" and 1 = "High"
Which of the following are designated as "Special Areas" in respect of the control of the discharge of Noxious Liquid Substances under MARPOL?
The Mediterranean Sea, Baltic Sea, Black Sea, Red Sea, "Gulfs" Area, Gulf of Aden, Oman Area of the Arabian Sea, Southern South African Waters, Antarctic and North-West European Waters.
Only the Antarctic.
The Wider Caribbean Region including the Gulf of Mexico and the Caribbean Sea, Southern South African Waters and North-West European Waters.
The Baltic Sea, the Black Sea and Antarctic.
Which one of the statements given in the options is correct in relation to the maintenance and adjustment of 4-stroke, medium speed diesel engines?
The piston ring groove clearances for the oil control ring are unimportant as this ring does not form part of the gas seal.
Liner wear of up to 3% of the bore size is generally acceptable for continued service.
Both the top and bottom shells of a bottom end bearing should be inspected as they can wear due to load reversal during the engine operating cycle.
Timing of inlet and exhaust valves can be correctly set by varying the tappet clearance.
To control bleeding, a tourniquet should be applied:
Only when all other means have failed
Whenever it is possible to stop bleeding
Only on Radio medical advice
Whenever you have to transport the casualty
How can you monitor the liquid level in the vapour line?
By use of a float switch or differential pressure in the liquid receiver
By monitoring the atmosphere in the vapour line with a fixed gas detector
There isn't any possibilities to monitor liquid in the vapour line
By monitoring the temperature in the vapour line on the compressors suction side
What must you ensure when using portable slopes to discharge ro-ro units?
They must be new
They must be free of dirt
The surfaces must be of the fish-bone type
They must be exactly aligned with the units’ tyres
An engine room rating notices that the guard on a running pump is hanging loose due to a missing bolt on the support bracket and it is catching the shaft coupling. What is the best action to take as a repair method?
Place a sheet of metal in front of the guard to deflect any parts that may fly off as a temporary repair.
Inform the watchkeeper so that the pump can be stopped and a new bolt can be fitted to permanently fix the guard in place.
Try and fit a new bolt while the pump is running to permanently fix the guard in place.
Fasten the guard back in place with a piece of rope with the pump running as a temporary repair.
This circuit symbol is an amplifier system and its frequency response diagram. Which control function is the system performing?
Proportional + derivate (PD)
Integral (I)
Proportional + integral (PI)
Proportional + integral + derivate (PID)
When describing equipment used in oil tanker operations, what does the abbreviation "VECS" stand for?
Vapour Emission Control System.
Vapour Emission Calibration System.
Vapour Ejection Control System.
Vapour Emission Control Standard.
Anyone of the crew who is assigned to watch duties in port has a number of important tasks to carry out. Which one of the listed tasks should be included in the watchman's duties?
Check the number of persons joining and leaving the vessel.
Check the safe and secure handling of cargo.
Check the moorings for correct tightness and ensure the gangway remains safe and secure.
Check there is always a shore watchman on the jetty.
Wich type of compressors are used as cargo compressor onboard liquified gas carriers?
One, two and three stage piston compressors.
Piston, screw and centrifugal type compressors.
One, two and three stage screw compressors.
Oil free screw and piston compressors.
What is the most common signal level from an I/P converter?
0-10V/3-15 PSI
4-20mA/3-15 PSI
0-1 mA/1-2 BAR
0-20 mA/0-20 PSI
Why should only dry powder known to be “foam compatible” be used in conjunction with foam to extinguish gas fires?
Because certain types of dry powder has a negligible cooling effect
Because certain types of dry powder can cause breakdown of a foam blanket
Because certain types of dry powder is a flame inhibitor
Because certain types of dry powder not give protection against re-ignition
What do the letters "TPC" stand for?
Tonnes per Centimetre.
Tipping Centre.
Trim per Centimetre.
Tonnes per Centimetre Immersion.
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".
Cargo residues of certain chemical substances are permitted to be removed by ventilation. What criteria is applied in determining if a cargo can be cleaned in this way? (Always accepting that local port authorities may have over-riding regulations on ventilation).
That the cargo discharged has a vapour expansion coefficient of at least 1.025.
That the cargo discharged has a vapour pressure greater than 5 KPa at 20 degrees Celsius.
That the vessel's ventilation system is capable of delivering a minimum of 20 changes of atmosphere per hour within the compartment.
That the volume of the tank does not exceed 1750 cubic metres, that the maximum remaining residues are less than 75 litres and that ventilation is additionally possible directly down the pumpstack.
For what are bridge indicators required on board a ro-ro vessel?
All shell doors which, if left open, could lead to major flooding
All hinged doors in watertight bulkheads
All sliding doors in watertight bulkheads
All
As well as having temperature sensors located in the cargo holds some reefer vessels are also fitted with ethylene sensors. Why is it useful to have information regarding the ethylene content in a reefer vessel cargo hold when carrying fruit cargoes?
The ethylene content must be maintained to help ripen the fruit during the sea voyage.
Some fruit cargoes are sensitive to ethylene and the quality of the cargo can deteriorate as they may over-ripen.
The ethylene content can be used as a guide as to when air change fans need to run.
The ethylene content is beneficial to perishable cargoes in transit so the content needs to be monitored in case the level falls.
Which types of compressors are used as cargo compressors onboard gas carriers?
One, two and three stage piston compressors.
One, two and three stage screw compressors.
Oil free screw and piston compressors.
Piston, screw and centrifugal type compressors.
Indicate the correct name for the part marked on the sketch:
Exhaust valve
Piston
Cylinder liner
Main bearing
Bulk Coal cargoes may produce methane and carbon monoxide gas; what are the main features of these two gasses?
Methane and carbon monoxide gasses are flammable and lighter than air
Methane and carbon monoxide gasses are non-flammable and lighter than air
Methane and carbon monoxide gasses are non flammable but toxic
Methane and carbon monoxide are heavier than air and flammable
What is the minimum value of the GM under the international Load Line Rules?
0,25 m.
2,0 m.
1,5 m.
0,15 m.
Which of these are indicators that an individual may be a drug smuggler?
The individual wears bulky or out of season clothing.
The individual is disinterested in the ship’s cargo.
The individual spends his or her free time hanging out with others.
The individual makes small local purchases.
How often shall the oxygen analyser be calibrated?
On Chief Officers order
At regular intervals
Every time the plant is shut-down
Prior to every plant start-up, following an 8 hour stop
What name is given to the short, intial wash given to tanks that have just contained certain particularly hazxardous cargoes before the ship leaves the unloading port and where the washings are landed to shore or to a slop barge?
A mandatory customer post discharge wash.
A confirmation cycle.
A SOLAS pre-flush.
A MARPOL pre-wash.
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.
A combustible gas indicator of the catalytic filament type is used to check the atmosphere in an enclosed space onboard ship. When taking readings in a fuel tank which has been emptied for cleaning the meter reading initially rises and then falls back to zero. What is the likely defect, if any, in the instrument when this type of behaviour is displayed?
The sampling pump is faulty.
The filament has burnt out.
The batteries are flat.
The filament is contaminated due to too high a concentration of hydrocarbons.
How should pipes, rails and road sections be stowed?
Always in the athwartships direction
Fore and aft when practicable
Always fore and aft
Athwartships when practicable
What is the maximum pressure that the safety valve on a steam boiler should be set to lift?
3% above the normal working pressure.
10% above the normal working pressure.
At the maximum design or maximum permitted working pressure of the boiler.
3% above the maximum design pressure..
What is the normal procedure for cooldown cargo tanks prior to loading LNG?
Pumping cold LNG through the spray header.
Pumping cold LNG to the bottom of the tank.
Pumping cold LNG through the heater.
Pumping cold LNG through liquid header.
What is important to keep in mind about U-profiles that are used on pipes supports?
They should only allow movement on the lateral axis.
They must not be fastened against the pipe.
They must be made of flexible material to protect against stress.
That they should be fastened tightly around the pipe.
How many lifejackets are required in a passenger cabin?
Twice the number of beds in the cabin
At least 2
None, they will be handed out at the muster station
Same number as beds in the cabin
TAN, total acid number is the:
Total content of organic acids in the oil.
Total content of organic and inorganic acids in the oil.
Amount of remaining alkalinity in the oil.
Total content of inorganic acids in the oil.
Some main propulsion medium speed engine installations operate with a hydraulic oil type fluid coupling between the engine and the reduction gearbox instead of a mechanical clutch. With this type of installation a separate flexible coupling is not normally fitted. Why is a separate flexible coupling usually omitted from this type of installation?
There is insufficient room to fit a flexible coupling between the engine and gearbox when a fluid coupling is fitted.
There are no engine torque variations in the drive when a fluid coupling is used so a flexible coupling is not required.
The hydraulic fluid in the coupling isolates the gearbox from the engine vibrations.
There is natural slippage between the drive and driven parts of the fluid coupling and a flexible coupling would prevent this slippage.
Under SOLAS, what are the minimum required air changes per hour for ‘Special Category Spaces’?
10
15
20
8
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.
The following chemical cargoes are all "carcinogens": Acrylonitrile, Aniline, Benzene, Chloroform, Epichlorohydrin and Toluene. What is a "carcinogen"?
A substance capable of burning tissue from contact with its vapours alone.
A cargo which requires cleaning at a specific temperature as listed in MARPOL.
A substance capable of inducing cancer.
A high-grade oil product, obtained by repeated distillation.
While getting tools ready and preparing for overhaul work on the main engine the engine room rating notices that the electrical extension is damaged. A small section of the cables outer insulation is split although the inner insulation appears ok. What action should the rating take?
Carry on using the extension after wrapping insulation tape over the damaged section as it is only minor damage.
Just use the extension as it is since the damage is only to the outer insulation and the inner insulation appears ok.
Cut off the end of the cable including the damaged section and refit the plug to the end of the remaining cable before using the extension.
Label the damaged extension as unfit for use and return it to the store for testing and get a replacement extension.
When Ro-Ro cargo is damaged what should be noted down immediately?
Chassis identifying marks and/or numbers
The driver’s name
Names of witnesses
The time, date and location of occurrence and details of the damage
This circuit shown is a logic gate with two 'high' input signals, A and B, and one output signal Q. Which type of logic function does the gate provide?
OR gate
AND gate
NOR gate
NAND gate
When a vessel is moving in shallow water it will experience an effect known as "Squat". Which of the following statements most accurately specify the results of squat on the vessel?
There will be a change of draught and a reduction in the speed.
If the speed of the vessel through the water is kept to "Slow Ahead" there will be no effect due to Squat.
There will be an increase in the vessels draught while moving through the water
There will be a reduction of the vessel's underkeel clearance and a possible change of trim.
What is the correct understanding of the term "Isobar"?
An "Isobar" is the line showing the direction of the predicted path of a hurricane.
An "Isobar" is a line joining places of equal pressure.
An "Isobar" is a line joining places of equal temperature
An "Isobar" is the line of the cold front in a frontal depression
Which is the "STARBOARD QUARTER", in the figure?
The Starboard quarter is C, in the figure
The Starboard quarter is B, in the figure
The Starboard quarter is A, in the figure
The Starboard quarter is D, in the figure
When may watertight doors in watertight bulkheads in tweendeck cargo spaces be open on board passenger ships?
Daytime only
At any time if watched by an authorized person
In ports only
During cargo handling only
Which of these statements is correct?
Steel slabs may rest directly against the ship’s frames
Steel slabs do not require dunnage
Steel slabs may be loaded within the square of the hatch only
Steel slabs must never be permitted to rest directly against any part of the ship’s structure
What is Inert gas ?
It is a gas containing insufficient oxygen to support combustion of hydrocarbons
It is a gas containing only nitrogen
It is a gas containing less than 21 % by volume oxygen
It is a gas containing no oxygen
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 does a "compactor" do?
It compresses and forms raw meat into burgers, patties and other pre-formed shapes prior to packing and freezing.
It disposes of waste material through high-temperature combustion.
It crushes and compresses garbage, such as food packaging, into a more manageable shape and form prior to disposal.
It crushes and grinds food waste into small particles that can be washed overboard as "grey water".
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
The fire integrity of any bulkhead shall be maintained
At the openings and penetrations
Only at the continuous/solid part of the bulkhead
Don't know
Up to 5 meters above the deck level
Why is it necessary to use the vacuum pump after major overhaul of the reefer system?
In order to reduce the pressure in the system before start-up.
Not necessary.
To evacuate air and water out of the system in order to prevent problem during operation.
To make underpressure in the reefer system in order to get the freon liquid easy back to the system.
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
What stability precautions should be taken when loading heavy cargo on a conventional general cargo vessel?
There would be no specific stability problems with a heavy cargo, because the ship would be down to her marks before the spaces were full.
Stow the cargo in the lower hold and keep the Centre of Gravity low and have a large positive GM
Stow some of the cargo in the Tween deck space to raise the Centre of gravity and reduce the effective GM
The lashings should be adequate for the weight of the cargo
What are the duties of the engineer officer in charge of the watch?
To carry out inspections of the steering gear at least once a watch.
To keep constant surveillance of machinery and auxiliary systems.
To ensure that the machinery spaces are properly manned.
To take appropriate actions to maintain the speed required.
An oil tanker's tank-cleaning machine with a rotational speed of 1 rpm and a slected pitch angle of 1.5 degrees is used to perform a bottom wash with a vertical angle from 40 degrees to 0 degrees for 1.5 cycles (3 passes). If the throughput of the machine at design pressure is 90 m3/hr, what will be the washing time and quantity of crude oil required?
40 minutes and 60 cubic metres of oil.
48 minutes and 70 cubic metres of oil.
30 minutes and 45 cubic metres of oil.
36 minutes and 48 cubic metres of oil.
What is likely to happen if a randomly hose is used for gas measurement?
The hose will most likely absorb hydrocarbon gases.
Nothing in particular.
The hose won't fit the indicator inlet ports.
The indicator will malfunction.
A second high pressure boiler is to be coupled to an online boiler supplying steam to the main turbine. How is the superheater section of the second boiler normally prevented from overheating during the period prior to coupling while raising the steam pressure?
The lift pressure of the superheater safety valve is lowered to allow the valve to lift and create a steam flow.
The superheater safety valve is manually opened to create a steam flow.
The superheater vent valve is kept open until the boilers are coupled to create a steam flow.
The superheater header drain valves are opened to create a steam flow.
"Which of these precautionary measures can reduce the threat of piracy, if implemented?"
Plan to arrive at port at night.
Sail at full speed.
Turn off all of the ship’s lights at night.
Stay at least 15nm away from the shore.
When must side scuttles in passenger ships where the sills are below the margin line be kept closed and watertight?
When unwatched
Always during night-time
When not necessary to be kept open due to work being carried out aboard
During navigation between ports
Данный онлайн-тест состоит из 90 случайных вопросов из тестов CES 5.1 по выбранной вами тематике.