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Головна Онлайн-тести CES Gas tanker Deck Support Test online CES 5.1 for Deck department, Support level, Gas tanker vessel
Онлайн-тестування: Test online CES 5.1 for Deck department, Support level, Gas tanker vessel
Виберіть режим роботи з тестом:
Навчання
Онлайн-тест
Опис
Тест складається із випадкових питань з обраної теми.
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The display of a radiotelephone-installation shows the following selections: Transmitting mode: H3E Transmitting frequency: 2187,5 kHz The transmitting mode indicator is “flashing”. This can mean that:
You are ready to press the send buuton
The radiotelephone-alarm signal must be transmitted now
The transmitting mode is not compatible with the chosen frequency
The “H3E”mode is to be selected before transmitting on the 2187,5 kHz band
A SART must be visible on the ship’s radar from a distance of at least:
Don't know
50 miles
30 miles
5 miles
A « MRCC » is :
A coast station
The master of a merchant ship who coordinates on scene search and rescue operations
The master of a SAR unit which coordinates on scene search and rescue operations
A SAR coordinating centre
What should be applicable to tank cleaning operations by means of circulation products with low flash products (below 60° C) ?
It can be done without problems.
It can be done on stainless steel tanks only and if the tank cleaning hoses are grounded.
It can be done if the tankcleaning hoses are grounded.
It should be avoided, unless the tank atmosphere is inerted.
Where should the placard you are shown be located, according to U.S. Coast Guard regulations ? (Title 33-Navigation and Navigable waters, § 155.440 )
In a conspicuous place at the bilge and ballast pump control station
In the wheelhouse
In a conspicuous place in each machinery space
Both in a conspicuous place in each machinery space and in a conspicuous place at the bilge and ballast pump control station
For which ships is the MARPOL convention applicable?
For all vessels.
For all vessels except passenger vessels.
For all vessels except those engaged in coastal trade.
For tankers and other vessels carrying persistent oil as cargo.
Which one of the listed requirements regarding liferafts does not correspond to present regulations? Every liferaft shall be so constructed that:
It's canopy has viewing ports in all directions
It can be dropped from a height of at least 18 metres
It can be towed at a speed of 3 knots with full complement
It can withstand repeated jumps from a height of 4.5 metres
What is the normal thickness of the primary barrier (membrane) on membrane containment type systems?
0.7 - 1.5 mm
1.5 - 2.0 mm
2.0 - 2.5 mm
0.2 - 0.5 mm
On a RoRo vessel, when loading Double Stacked containers on Maffi Trailers how many twist locks should have used between the 2 containers
three in total 2 at the door end 1 at the opposite end
One at each end 2 in total
One on every corner 4 in total
The heat required to raise the temperature of 1 kg of any particular substance 1°C is called:
Heat transfer coefficient
Latent heat
Specific heat
Adiabatic heat
How often should normal testing of the cooling water be done?
Once a month.
Every 2.nd week.
Every day.
Once a week.
What is the requirement regarding number of slop tanks on oil tankers of 70,000 tons and above delivered after 31 December 1979?
Shall be provided with at least 2 slop tanks.
Shall be provided with slop tank.
No requirement regarding number of slop tanks.
Shall be provided with sufficient number of slop tanks.
How should cargo hold ventilation be carried out on a Ro-Ro vessel loading or discharging cargoes?
By natural ventilation
With the ventilation fans set to ‘supply'
With the ventilation fans set to ‘exhaust'
With ventilation fans set alternately to ‘supply' and ‘exhaust'
Which of the statements given in the options relating to LNG carriers is true?
LNG is normally carried in fully pressurised gas carriers.
LNG is always carried at very low temperature.
The size of an LNG carrier is limited to no greater than 50,000 m3 cargo capacity.
All LNG carriers are fitted with spherical tanks.
What do you think would be the most likely cause of too low suction pressure in a freon compressor?
Broken suction valve plate.
Too little gas in the system.
Blocked condenser tubes.
Blocked condenser.
What is the relative liquid density of Methane?
0.427
0.554
0.624
0.583
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.
Ballast introduced into a cargo tank on a chemical tanker which has been washed to such an extent that the ballast contains less than 1 ppm of the substance previously carried may be discharged into the sea without regard to the discharge rate, ship's speed and discharge outlet location, but under certain conditions. What are those conditions?
That the vessel is not less than 50 miles from the nearest land and is proceeding on route.
Provided the ship is underway and a sample of the ballast water has been drawn from the tank and is stored on board, there are no additional conditions to be imposed on such a discharge.
That the discharge is passed through the Oil Discharge Monitoring Equipment and a visual watch is maintained on the vessel's wake.
That the vessel is not less than 12 miles from the nearest land and is in water that is not less than 25 metres deep.
A steward reaches into a sink filled with soapy water to remove the plug. He cuts his hand on a carving knife lying in the bottom. What policy will best eliminate the chance of this kind of accident happening again while still maintaining hygiene standards?
Everymember of the galley staff is made responsible for washing their own knives.
Heavy duty gloves are to be worn when working at the sink.
Detergent shall not be used if knives are to be washed.
There is a dedicated sink for washing knives.
During inspection of a medium speed diesel engine main bearing the shell is found to have approximately 15% of the white metal overlay worn away and some light score marks on the exposed aluminium tin bearing metal. Select the most appropriate action to take from the given options?
Refit the shell as it is, this is an acceptable condition for a thin shell bearing after a period of service.
Use a scraper to remove the score marks from the bearing metal before refitting the shell.
Use a scraper to remove the remaining overlay before refitting the shell.
Discard the damaged shell and polish the journal pin before fitting a new shell.
When opening hatch covers on a General Cargo vessel, what would indicate that there was ingress of water into the cargo holds during the voyage?
Rust-stained cargo
Evenly-distributed rust spots around the cargo hold
Evenly-distributed rust spots on cargo
Bright rust streaks on hatch coamings
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 is a Continuous Synopsis Record?
A plan including all security measures onboard
A record of the vessels history
A record of all security incidents
A plan for continuous maintenance of security equipment
What will be the probably outcome if the amplification is set to high on the controller
Nothing
The process response will be very slow
The process will oscillate and get out of control
The set-point will change
Modern slow speed, two stroke diesel engines often have locating pins or pegs to keep the piston rings in a fixed position. Why is this arrangement used?
It ensures the rings cannot be mixed up and that they are fitted in the correct order on the piston.
It avoids the risk of the ends of the piston rings being forced out by the gas pressure and catching on the scavenge ports.
The piston ring gaps can be kept in line to control the gas pressure on each of the rings.
The piston rings are more difficult to lubricate because of the slow operating speeds and will wear more quickly if they are allowed to rotate.
What height of water above the inner bottom will activate the cargo hold high level alarm
Not more than 2.5m
Not more than 2.2m
Not more than 2.0m
Not more than 2.8m
What would you do before giving a boiler a “bottom blow”
Increase the oil temperature
Drop the water level a couple of inches below normal
Increase the oil pressure
Raise the water level a couple of inches above normal
What will happen with the interface in the bowl, if the flow is too high?
The separation of the oil is bad.
The separation of the oil is good.
Will have no effect on the interface.
Broken water seal.
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.
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.
Cargo compressors are often used to handle cargo vapour on LPG carriers. How is liquid cargo prevented from entering the suction side of the cargo compressor?
By filling the vapour line between the cargo tank and the compressor with silica gel.
By fitting a liquid separator in the vapour line between the cargo tank and the compressor
By fitting a drain valve on the vapour line between the cargo tank and the compressor which is left open when the compressor is operating.
By fitting a drier in the vapour line between the cargo tank and the compressor.
The Safety Management Manual contains checklists that are:
clear, concise summaries of all action items in the emergency plan
clear, concise summaries of critical action items in the emergency plan
to be used when crewmembers feel especially stressed in emergencies
detailed
On a RoRo vessel, with regard to the characteristics of a mafi trailer, what must be ensured prior to disconnecting from the tug on board?
That after unfastening it will not move
That there is sufficient room for it to be driven away
That cargo on the trailer is not damaged
Which of the following detectors would you choose for measuring the torque of a steel shaft?
Pyrometer
Strain gauge
Ultrasonic gauge
Synchro
The arrival ballast water must contain maximum 15ppm (parts pr. million) of oil to fulfil the regulations in force. How many ppm is 1% by volume.
1000 ppm.
100 ppm.
100000 ppm.
10000 ppm.
What would rolling indicate, on a vessel loading logs on deck?
Increasing capsizing moments
The onset of synchronised rolling
An approaching angle of loll
Zero GM
Frostbite is one of the main hazards that personnel must be aware of when working on liquefied gas carriers. Which of the given options is the recommended first aid treatment for a person with frostbite injuries to the hand?
Rub victim's hands vigorously to warm them up quickly.
Place victim's hands in hot water to warm them up quickly.
Place victim's hands on the surface of a heater to warm them up.
Place victim's hands in a bowl of lukewarm water to gradually warm them up.
What are “contractual clauses”?
Terms and conditions of work employment with the ship owner
Details of amount of time allowed for shore leave
Terms relating to the amount of food and water allowed per person on board
Part ALC 1d of the crew agreement, giving details of specific terms and conditions for seafarers
Zener barriers are sometimes used to supply power to electronic equipment in hazardous areas. Which statement is correct with regards to power supply for equipment supplied through Zener-barriers?
The 0-volts line must always be grounded.
The +24V must always be grounded.
The 0-voltage must never be grounded.
The - 24V must never be grounded.
Which of the suggested navigational systems is a "Hyperbolic" navigational system and has hyperbolae as position lines?
Loran C
Radio Direction Finder
All of the suggested systems
GPS
The sign on the image indicates:
Location of lifebuoy with self-igniting light and self-activated smoke signal
Rescue zone
This is the location where you should operate pyrotechnic equipment (Buoyant smoke signal, hand flares and rocket parachute flares) In case of an emergency
Location where you should throw lifebuoys in case a man- over-board situation occurs.
The operation of a diesel engine is controlled by a mechanical-hydraulic, compensated speed sensing governor. How will the governor control be affected if the compensation needle valve is closed in and the engine load changes?
The governor will hunt resulting in erratic engine speed control.
Engine speed control will be sluggish.
A change in load will not affect a speed sensing governor.
Altering the compensation needle valve has no effect on speed control.
What does not apply to the carriage of timer deck cargoes?
The International Tonnage Convention
The Code of Safe Practice for Stowage and Securing of Cargoes
The International Convention on Loadlines
SOLAS 74/78
How many lifejackets are required in a passenger cabin?
At least 2
Same number as beds in the cabin
Non, they will be handed out at the muster station
Twice the number of beds in the cabin
You are on a chemical tanker, where the duty officer usually controls the opertaion of the pumps and valves from a control room. You are in radio contact with him. The ship has just started to discharge several grades of chemicals to shore. Suddenly, the jettyman shouts across to you to "STOP". Which of the following will you do?
Inform the jettyman that you will check with the duty officer first.
It is important to keep the cargo discharge going, so you will ask the duty officer to slow the pumps to minimum speed while you find out what is happening.
Immediately repeat the request on the radio to the duty officer, then proceed to the manifold and stand-by for further instructions.
Ignore him, because you take your instructions only from the duty officer.
By what means can we monitor and control the integrity of the hull?
Let experienced personnel close and secure doors and ramps
Automatic detection systems, television surveillance and patrolling
Documented operating procedures
The chief officer is responsible for monitoring the integrity of the hull and superstructure at all times
A reefer vessel is loading a cargo of fruit alongside in a South African port. During loading another vessel arrives at an adjacent berth to have its cargo discharged after having been towed in following a fire onboard which had resulted in abandonment. What should concern the Master of the reefer vessel most about the situation?
That the cargo may be contaminated by the smell of smoke and the products of combustion from the damaged vessel.
The damaged vessel is unmanned and may not be cared for properly.
The speed of cargo operations may be hindered due to the discharge of cargo from the damaged vessel.
The cargo being discharged from the damaged vessel may be in poor condition and may contaminate the loading vessel's cargo.
Where is the normal position of the "Pivot Point" of the vessel when going ahead?
1/4 of vessel's length from the stern
1/3 of the vessel's length from the bow.
Amidships
Normally varies dependant on the speed ahead
Why is it important to have an efficient fire patrol system on board passenger ships?
To ensure that an outbreak of fire may be prompltly detected
To control that passengers adhere to smoking regulations on board
To verify that the automatic fire-detection system is working properly
To show passengers in public areas we are on duty 24 hrs
How is a dangerous substance listed in the IMDG Dangerous Goods List?
By its Proper Shipping Name (PSN) and subsidiary name
By its Trade Name
By its Proper Shipping Name (PSN)
By its abbreviated Trade Name
The range of a transducer is 0-200 bar. The output signal is 4-20 mA. What is the span of the output signal.
20 mA
4 mA
24 mA
16 mA
"…a ship… …intended to transport products with appreciably severe environmental and safety hazards which require significant preventative measures to preclude escape of such cargo. Usually the ship is of double-hull construction, with a variety of tank sizes / capacities." What is this the definition of?
A chemical tanker for the purposes of the 1996 IMO directive MEPC/2.12 circ. on "Mandatory Reporting Requirements for Ships Carrying Dangerous or Polluting Goods".
A type I chemical tanker as per the IBC Code.
A type II chemical tanker, as per the IBC Code.
A parcel chemical tanker as per the IACS Construction Regulations.
On the figure there are four (4) possible definitions of the term "AFT" shown. Which one is the correct one?
Aft is defined as B on the figure
Aft is defined as D on the figure
Aft is defined as C on the figure
Aft is defined as A on the figure
Chemicals and harmful substances are safely stored in a designated locker on board, why?
For safety reasons and stock control. When chemicals or harmful substances is delivered to a crewmember, the user shall sign for the amount received.
For stock control. Most of the chemicals and harmful substances we use on board are expensive.
Chemicals and harmful substances must be kept away from passengers so that they don't steal it.
For safety reasons. Many substances found onboard are capable of damaging the health and safety of those exposed to them. Before any chemical or harmful substance is delivered to a crewmember, the personnel shall receive training, instructions and information so that they know and understand the risks arising from use.
You are alongside and the hoses have been connected for discharge. The jetty-man shouts across to you, telling you to start cargo. The Duty Officer has not yet given you any instructions to commence. What will you do?
Open the valves and start discharge as soon as possible.
Advise the jetty-man that there is a problem on board and you will notify him when you are ready.
Ignore the jetty-man. Do nothing.
Advise the Duty Officer and await further instructions. Ask the jetty-man to stand by.
How is responsibility for the stowage and securing of containers determined on multi-purpose vessels?
By wording in the charter party
By advice from the Supercargo
Responsibility always lies with the charterer
Responsibility always lies with the attending surveyor
Why do Bending Moment (BM) curves sometimes differ between the loading manual and loading computer?
Because BM values in loading computers are often taken at the bulkheads whereas loading manuals calculate stresses at intermediate points as well
Due to the age of a vessel
Because BM values in loading manuals are often taken at the bulkheads whereas loading computers calculate stresses at intermediate points as well
Due to steel replacements made during the life of a vessel
How will you act if you are helmsman and after making a turn to port you receive the order: “Steady as she goes”
Put the rudder midship and wait until she stops
Give counter rudder to stop her and keep the course
Read off the compass and keep her steady on the course
Put the rudder all the way to starboard to stop the turn
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.
What do you understand by the order: "Move the pilot ladder to the other side"?
Move the pilot ladder to the other side, means: to shift the pilot ladder to the opposite side of the ship.
Move the pilot ladder to the other side means: to change the position of the pilot ladder from the main deck to the fore deck.
Move the pilot ladder to the other side means: to rig another pilot ladder
Move the pilot ladder to the other side means: to move the pilot ladder further along nearer to the bow.
How can the ship’s master prove that a vessel is British?
By showing survey certificates issued by Lloyds Register in London
By showing the ship-s register
By flying the Red Ensign
By showing a Certificate of Equivalent Competency issued by the MCA
You are about to commence tank-cleaning after discharging a cargo of Olefins. What should happen with "ball" type valves in the pipeline system during cleaning?
They should be operated (opened and closed) to ensure all surfaces are flushed and drain plugs should be temporarily removed.
They should remain fully open throughout to ensure washing water does not back up against the valve.
The bolts in the flanges either side of such valves should be slackened off to ensure residues are flushed clear of the surfaces of the valve casing.
They should only be opened when it is necessary to discharge washing water.
Where is "AFT", in the figure?
Aft is B, in the figure
Aft is D, in the figure
Aft is A, in the figure
Aft is C, in the figure
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
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
What type of cargo shall always be secured?
The driver must ask the crew to secure the vehicle and its cargo
Tank lorries should always be secured.
Freight vehicles carrying dangerous goods and adjacent vehicles should always be secured.
No cargo or vehicles have to be secured if the weather conditions are favourable.
The Threshold Limit Value (TLV) refers to as parts to million (PPM) by volume of gas in air. What does the time weighted average of ppm indicates?
The average of exposure to a toxic substance per day.
The maximum exposure to a toxic substance per 8 hours working day.
The maximum exposure to a toxic substance per day.
The average exposure to a toxic substance per 8 hours working day.
To prevent inadvertent leaks, bunker manifold not in use should:
Have blank flanges fitted and tightened with some bolts in place
Have blank flanges fitted with gaskets and tightened with all bolts in place
Have blank flanges fitted with gaskets and tightened with some bolts in place
Have blank flanges fitted and tightened with all bolts in place
You enter a high voltage switchroom and smell rotten eggs. What may this indicate?
Problems with a vacuum circuit breaker
Arcing at badly coupled bus bars
Problems with a gas (SF6) circuit breaker
Burning of insulation
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 are Primary fenders, with regard to ship-to-ship transfer operations?
Primary fenders are large fenders meant to float between vessels and absorb considerable impact
Primary fenders are tyre-type fenders kept on deck for emergency use
Primary fenders are small fenders suspended between the ships' bows or stern to protect from inadvertent angular contact
Primary fenders are fixed to the bow of an attending tug (if any)
During a scavenge port inspection of a diesel engine the piston rings on all units were seen to display the signs of the early stages of microseizue. What action should be taken to ensure that the progress of the microseizure is stopped and the rings recover?
Run the engine at reduced load.
Increase cylinder oil feed to all units. Check the fuel quality and operation of fuel oil purifiers and filter.
Replace all of the piston rings
Decrease cylinder oil feed to all units
During UMS rounds, a duty engineer notices that the fuel oil overflow observation glass is full of oil. Should he:
Stop all F.O. transfers immediately, and inform the CE.
None of the listed alternatives.
Make a sounding of the F.O. overflow tank and decide if there is enough capacity to leave it until the following morning.
Call a motorman and have him sound the FO overflow tank periodically during the night.
Some diesel engines have alarm and slow down protection in the event of a fire in the scavenge boxes. Choose the option which would be a typical set point for giving a slow down of the engine in the event of a scavenge box fire?
40° C
120° C
50° C
150° C
The Code of Safe Practice for Cargo Stowage and Securing was prepared to give guidance in which of the following cases.
Guidance for Port State Control Officers when carrying out ship inspections.
Guidance on securing of cargoes in hazardous ocean areas.
Preparation and content of the Cargo Securing Manual.
Ship specific guidance relating to securing of deck cargoes.
When should a spreader be used for general cargo operations?
When the weight of a load needs to be evenly distributed by the lifting gear
When the length of a load is such that slinging it will create unacceptable bending moments
When the length of a load is such that slinging it will create sagging
When handling open-top containers
A compressed air supply system has two automatically controlled air compressors. When demand is high both compressors are needed to meet the delivery requirements. What is the best method for controlling the compressors to meet a varying, but intermittent demand?
Start and stop of the compressors controlled by timer switches.
Continuous running of both compressors and the use of unloading devices.
One compressor running continuously with the other on standby.
Sequential start initiated by pressure switches set at different switching pressures.
A seawater pump requires overhaul but there are no spare wear rings for the casing and impeller. It is decided that new wear rings will be fabricated onboard using the ship's lathe. What would be the most suitable material to use to fabricate the rings onboard?
Zinc.
Aluminium brass.
Mild steel.
Aluminium.
You have just completed discharge of a cargo of Iso-Butanol and are preparing for tank cleaning. The pumpman is going round the deck checking the cargo pump cofferdams for any leakage of hydraulic oil or cargo. What term is applied to this procedure?
Proving.
Stripping.
Venting.
Purging.
Frozen cargo such as lamb carcasses requires careful loading to ensure a neat and tight stow in the hold and requires the crew and stevedores to have considerable skill to achieve this. Which of the options given is the main reason for this?
The carcasses are difficult to pick up when handling.
The carcasses are heavy.
The carcasses are of an irregular shape.
The carcasses are often large.
Which of these definitions is that of a "Marine Pollutant" under the IMDG Code?
Any substance which is deemed hazardous to the marine environment.
A substance which is subject to the provisions of Annex III of MARPOL 73/78, as amended.
A substance which, because of its tendency to degrade in seafood, or because of its hazard potential to the aquatic environment is subject to the provisions of Annex I of MARPOL 73/78, as amended, and carried by sea accordingly.
A substance which is subject to the provisions of Chapter V of SOLAS 1974, as amended.
What basic information do we get from the pump's flow-head curve?
We get information about the NPSH.
We get information about the pump's suction head.
We get information about the pump's back pressure.
We get information about the pump's lifting height and liquid flow.
Conventional reefer vessels often carry non-refrigerated cargo on the voyage to the loading port, for example from Northern Europe to Central America. Which one of the options given is the most suitable type of non-refrigerated cargo to carry in such a situation?
Grain in bulk.
Steel coils.
Unpackaged motor vehicles.
Chemical products.
Why should containers containing scrap metal be stowed under deck or in high on-deck stowage positions?
Because of separation requirements under the IMDG Code
To avoid contact with seawater
Because of shippers’ requirements
Because of segregation requirements under the IMDG Code
How does a cement carrier discharge its cargo?
Using its own pumping system and equipment
By suction
Using shore side cargo gear
Using grabs
Which person is qualified to carry out a five yearly thorough survey of cargo gear on a General Cargo vessel?
The master
A classification society surveyor
A deck officer designated by the master
A marine surveyor
Why is it impossible to have a lifeboat drill at present?
Because the crew will be busy heaving the anchor
Because the lifeboats are defect
Because the ship is leaving after sunset the following day
Because the anchor is damaged, and the ship is drifting away from its anchor zone
How should you, as helmsman, give feedback to the OOW (officer on watch) that his orders are understood?
You don’t have to give any feedback
By saying: “Yes Sir”
By saying: “OK”
By repeating the order
A class "D" fire involves what type of material?
Liquids
Gases
Wood or other carbonaceous material
Metals
In which way may intake of poisoning material occur?
By inhaling, skin penetrating and skin absorbing
By skin penetrating, skin absorbing and swallowing
By swallowing
By inhaling, skin penetrating, skin absorbing and swallowing
Даний онлайн-тест складається з 90 випадкових питань із тестів CES 5.1 з обраної вами тематики.