%20scale(3)'%3E%3Cpath%20id='s'%20d='M0,-30%2017.63355,24.27051%20-28.53171,-9.27051H28.53171L-17.63355,24.27051z'%20fill='%23FF0'/%3E%3C/g%3E%3Cuse%20xlink:href='%23s'%20transform='translate(300,60)%20rotate(23.036243)'/%3E%3Cuse%20xlink:href='%23s'%20transform='translate(360,120)%20rotate(45.869898)'/%3E%3Cuse%20xlink:href='%23s'%20transform='translate(360,210)%20rotate(69.945396)'/%3E%3Cuse%20xlink:href='%23s'%20transform='translate(300,270)%20rotate(20.659808)'/%3E%3C/svg%3E){kind=small}
Search for current vacancies:
Show filters
Search in the database of seafarers' resumes:
Home Online tests CES Oil tanker Deck Support Test online CES 5.1 for Deck department, Support level, Oil tanker vessel
Online testing: Test online CES 5.1 for Deck department, Support level, Oil tanker vessel
Select the test mode:
Education
Online test
Description
The test consists of random questions on a selected topic.
Question 1 from 90
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- 31
- 32
- 33
- 34
- 35
- 36
- 37
- 38
- 39
- 40
- 41
- 42
- 43
- 44
- 45
- 46
- 47
- 48
- 49
- 50
- 51
- 52
- 53
- 54
- 55
- 56
- 57
- 58
- 59
- 60
- 61
- 62
- 63
- 64
- 65
- 66
- 67
- 68
- 69
- 70
- 71
- 72
- 73
- 74
- 75
- 76
- 77
- 78
- 79
- 80
- 81
- 82
- 83
- 84
- 85
- 86
- 87
- 88
- 89
- 90
Which one of the listed requirements regarding lifeboat equipment correspond to present regulations? The normal equipment of every lifeboat shall include:
Helicopter rescue equipment
Sea charts and navigation equipment
A survival manual
Oil pollution equipment
Via Inmarsat-C a message is sent to an Inmarsat-C mailbox with a positive delivery notification (PDN). The groundstation will:
send a PDN, if the message has arrived in the mailbox
send no PDN’s with messages intended for the mailbox
Don't know
send a PDN, as soon as the message is collected from the mailbox
Regular ‘updating’ of a vessel’s position in an Inmarsat-C installation is among other things of importance:
to exclusively receive MSI-reports meant for the NAVAREA where the vessel is
because the Inmarsat organisation, in connection with the good reception of MSI-reports, makes it……
because MSI-reports for own vessel can't be received otherwise
Don't know
What is false regarding the function :” Transmission and reception of signals for locating ”
On area A2 this function is based on the use of SART transponders
On all areas this function is based on the use of S band radars
On area A3 and A4 this function is based on the use of SARSAT COSPAS Epirb
On area A1 this function is based on the use of SART transponders
MMSI is short form of:
Maritime Mobile Service Identity
Mobile Maritime Safety Information
Merchant Mariners Signal Identity
Merchant Marine Ship identity
You are at the mainfold with the cargo surveyor, drawing samples at the start-up of cargo. A sample of 2-Ethyl Hexanol is off colour. The surveyor instructs you to open the manifold valve and start loading. What will you do?
Tip the sample into the drip tray and draw more samples until it clears. A maximum of ten litres may be drawn and dumped before it is considered a problem.
Open the manifold valve as requested but make a note in the log-book regarding the off-colour sample.
Keep the manifoild closed, report the situation to the Chief Officer.
Open the necessary tank loading valves and then open the manifold valve. With this product, the colour will soon clear.
If the radar is set onto the Relative Motion Display, what would an echo of a target with no trail indicate? Note this the trail of the echo and not a vector.
The target is on the same course and speed as own ship.
The target is stopped and making no way through the water
The target is on a constant bearing and getting closer to own ship.
The target is on a collision course with own ship.
How is shallow water effect felt in a vessel?
The vessel has a tendency to turn to port (right turning propeller)
The vessel has a tendency to turn to starboard (left turning propeller)
The vessel responds very quickly to the rudder
The vessel becomes sluggish in responding to the rudder
Which of the following information shall be specified by the muster list?
The abandon ship signal consisting of two long blasts
Action to be taken by crew and passengers
The muster list has been prepared and approved by the administration before the ship proceeds to sea
The specific duties assigned to passengers that are in charge of a group of others
*Which of the following duties shall be included in the "muster list" as being assigned to members of the crew ?
operation of the vessel-s propulsion system
preparation of immersion suits for the ship-s passengers
preparation and launching of the survival craft
preparation of manoeuvres intended to ease launching of the survival craft
Why are all RoRo passenger ships divided into vertical ’zones’?
There is one fire team in each zone
All vertical zones are separated with watertight doors, which will be closed in the case of a grounding, etc.
Vertical zones are fire zones which can be divided from each other with fire doors. In case of fire, all fire doors in front and aft of the fire will be closed to prevent spreading of smoke/fire.
Vertical zones are separated with fire doors which will be closed automatically when the fire alarm start.
What is characteristic of titanium, magnesium and lithium catching fire?
There is always risk of explosion
These fires are self-extinguishing
These fires can only be extinguished using water
Due to chemical reactions these cargoes will continue to burn
In the event of a diesel engine crankcase explosion which of the safety devices fitted to the engine is designed to minimise the risk of a secondary explosion?
Crankcase relief valves/doors
Main bearing temperature monitoring equipment.
Crankcase extraction fan.
Crankcase oil mist detector.
What are some of the most important tasks to carry out on a bulk carrier, before commencing hatch cleaning operations?
Collect tools and hoses
Hatch covers to be opened and cranes ready
Sufficient manpower available and ER informed
Risk Assessment, Permit to work /enter and tool-box talk
During replacement of the main bearing shells on a medium speed diesel engine it is necessary to remove both the top and bottom half shells. From the options given select the method that is most commonly employed to remove the bottom half shells from the bearing pockets on an engine with a traditional bedplate?
Jack up the crankshaft and use a suitable punch to loosen the bottom half shell in the pocket so it can be lifted out with a pair of grips.
Fit a driver in the crankshaft oil hole which bears against the edge of the bottom half shell and turn the engine.
Turn the engine to a position where the crank webs are clear of the shell and knock the bottom half shell out axially using a suitable punch.
Remove the crankshaft so that all the bottom half shells can be removed at the same time.
The DoS addresses the responsibility for the security of the water around the ship and the verification of increased threat levels.
TRUE
FALSE
.
Where can the size of the Magnetic Compass Error be found?
By taking a transit bearing of two fixed geographical positions and comparing it with the bearing of the same points on the chart
On the chart in the centre of the compass rose or by reference to the Variation chart, taking into account the annual changes
By reference to the last entry in the Compass Error Log Book
By taking the error from the Deviation Table on the bridge
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.
Under what regulations would steel bands remaining in the cargo holds have to be discharged?
MARPOL 73/78 (Annex IV - Regulations for the prevention of pollution by sewage from ships)
Port state regulations applicable at the port of destination
MARPOL 73/78 (Annex V – Regulations for the prevention of pollution by garbage from ships)
Flag state regulations
What arrangement may be installed in passenger ships to reduce unsymmetrical flooding in damaged condition?
Self acting ballast trimming arrangement
Separate trim tanks
Ballast trimming system
Cross flooding arrangement
What is enthalpy?
Enthalpy is the sum of the external energy of a substance plus the product of the substance volume multiplied by the pressure exerted on the substance by it’s surroundings.
Enthalpy is the difference between the compressor suction temperature and the condensate return temperature.
Enthalpy is the sum of the internal energy of a substance plus the product of the substance volume multiplied by the pressure exerted on the substance by it’s surroundings.
Enthalpy is the sum of the internal and external energy of a substance plus the product of the substance volume multiplied by the pressure exerted on the substance by it’s surroundings.
What number is being shown by this flag hoist?
2202
1101
2121
1100
What should be the healthy continuity resistance of a 220V, 2.2kW heating element, when checked near to it's rated operating temperature?
0.1 Ohms
220 Ohms
22 Ohms
10 Ohms
Which of the following detectors will you choose for detecting smoke from fire?
Thermocouple
Thermometer
Strain gauge
Ionization type
What are the characteristics of Seed Cake group B (IMDG Class 4.2) cargo?
Liable to spontaneous combustion only
May self-heat slowly; may spontaneously ignite; liable to oxidise
May self-heat slowly; may spontaneously ignite; liable to oxidise; may produce carbon dioxide
Liable to oxidise only, causing subsequent reduction of oxygen in the cargo spaces
What has the cadet been ordered to do?
The Cadet has been ordered to to dismantle the evaporator
The Cadet has been ordered to test the steering gear
The Cadet has been ordered to help the Bo's'un sandblast the poop deck
The Cadet has been ordered to paint the evaporator using a paint brush
What is the purpose of a draught survey before and after loading on a Bulk Carrier?
The calculate the stability of the vessel
To calculate the deadweight of the vessel
To ascertain the actual weight of cargo loaded
To calculate light displacement of the vessel
A clogged / dirty lube oil filter can be detected best by:
The pressure drop across the filter.
Visual inspection of the filter elements.
A decrease in oil viscosity.
High lube oil temperature.
What is the definition of DEAD BAND?
The largest difference in the output signal for the same change in the input signal.
The change needed in the input signal to produce a change in the output signal.
The change in the output signal produced by a certain change in the input signal.
A missing electrical signal.
On the figure 4 possible definitions of the term "CENTRE LINE" are given. Which one is the correct one?
Centre line is given by D on the figure
Centre line is given by B on the figure
Centre line is given by A on the figure
Centre line is given by C on the figure
A hazard is is a source of potential harm or damage or a situation with potential for harm or damage. Risk is determined based on evaluation of two elements. Which two elements?
The likelihood that a hazard may occur and the consequences of the hazardous event
The likelihood that a hazard may occur and the financial consequences for the Company
The likelihood that a hazard may occur and the available personal protective equipment we have onboard
The consequences of the hazardous event and the available personal protective equipment we have onboard
One technique for using good body language is to:
stand still when speaking
fidget when speaking
speak quickly because there's not much time
show that this is a serious situation by not smiling
Where is the "WINDLASS", in the figure?
The Windlass is inidcated by D, in the figure
The Windlass is inidcated by B, in the figure
The Windlass is inidcated by A, in the figure
The Windlass is inidcated by C, in the figure
Which of these tasks are performed as part of the SSA?
Implement measures to address weaknesses in ship security.
Train shipboard personnel in their security duties.
Assess the likelihood and potential consequences of security incidents.
Assign security duties to ship personnel.
Which of the given options can be considered to be the most important physical property of a liquefied gas?
Its unsaturated vapour density.
Its saturated vapour pressure/temperature relationship.
Its latent heat.
Its molecular structure.
What is the correct definition of "lee side"?
Port side.
The side from the wind.
The side against the wind.
Starboard side.
What do international and national maritime authorities say about passenger list?
All passengers onboard must be registered with name, age and cabin number.
No requirement to have passenger list onboard as long as shore terminal/office have one, and can send it to the ship on request.
Optional for each company if they want to have passenger and crew list.
All personnel onboard (crew and passengers) shall be registered in order to keep track of total number of person on board
The emergency oil pollution equipment locker must be:
Just off the main engine room
A store room in the forward part of the ship
Prominently marked and easily accessible
A store room close to the pump room
During overhaul of some plate type compressor valves the engine room rating is asked to clean the valve plates and seat. Some of the valve plates are heavily marked. What action should be taken?
Skim the valve plates in the lathe to remove all of the marks.
Discard the defective valve plates and replace them with new spares.
Dress the valve plates up using a portable grinder.
Use coarse grinding paste to remove the marks from the valve plates as quickly as possible.
A reefer vessel is to load a part cargo of frozen beef hocks (large joints of beef, usually quarters, not packed in cartons). In deciding which would be the most appropriate space on a conventional reefer vessel, which of the given options would be the preferred choice?
Any space will be acceptable as this is a hard frozen cargo and relatively easy to handle and carry.
4A deck as this is the largest square space on the vessel and will allow good access and air flow for the cargo.
A cargo space low in the vessel as this cargo has a relatively high stowage factor.
1C deck as this is the narrowest space on the vessel and will best constrain the cargo from any possible movement during the voyage.
The benefits of emergency response plans are only realized if:
survival craft are launched
escape routes are used
lifejackets are put on
the crew carries out the plans
When checking the closed butt gap clearance of new piston rings prior to fitting onto the piston it is normal to try the rings in the liner so that the gap can be measured. From the options given select the best part of the liner to use to carry out these checks.
Near mid-height of the liner.
Near the bottom of the liner.
Near the top of the liner.
Just above the scavenge ports.
Under international regulations where must entries be made with regard to the disposal of bulk cargo residues into the sea?
In the Garbage record book
In the Official log book
In the Deck log book
In the Cargo record book
When is track line search normally used?
When the position of the search object is accurate
When a vessel or aircraft has disappeared without a trace
When the position of the search object is not accurate
When a direct communication between the search object and the search facility is available
In the figure, which letter indicates the "BREADTH” of the vessel?
Breadth is indicated by B, in the figure
Breadth is indicated by A, in the figure
Breadth is indicated by C, in the figure
Breadth is indicated by D, in the figure
Which of these items of container lashing equipment is prone to sudden failure?
Fully automatic twistlocks
Semi automatic twistlocks
Twistlocks
Midlocks
Some cargoes carried on liquefied gas carriers are toxic and are given a Threshold Limit Value (TLV) as a time weighted average (TWA). What does the TLV-TWA usually indicate?
It indicates the maximum vapour concentration that a person can be exposed to for 8 hours per day or 40 hours per week.
It indicates the maximum vapour concentration that a person can be exposed to for one hour.
It indicates the absolute maximum vapour concentration that a person may be exposed to at any time.
It indicates the maximum vapour concentration that a person can be exposed to before breathing apparatus is required.
On a Container vessel, what should a crew member do if a tank container on deck is found with a leaking valve?
Close the leaking valve
Wash away the leaking contents immediately
Raise an alarm
Report it immediately to the duty officer
During inspection of the crankshaft of a medium speed diesel engine cracks are discovered at one of the main journal pins. The cracks originate from one of the oil holes and are progressing along the pin at approximately 45 degrees to the axis. From the options given select the most likely failure mode that would cause this.
Torsional fatigue due to excessive torsional vibration in the crankshaft.
Shear due to excessive loading of the crankshaft.
Fatigue due to repeated excessive bending of the crankshaft.
Erosion due to excessive oil flow through the oil hole in the crankshaft pin.
What is the most important factor to be considered when planning the lashing system for a particular sea route?
The quantity and type of lashing materials
Transverse accelerations
The size and weight of packages/cargo units to be loaded
The breaking strength of lashing materials
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
A very dusty cargo is to be loaded on a bulk carrier; what precautions on deck should be included?
No access allowed onto main deck
Decks washed down regularly
All cranes, deck houses and storerooms fully closed down to prevent entry of dust
No extra precautions need to be taken
On a RoRo vessel, what should be done when cargoes that transmit stack loads are to be loaded onto the vessel's decks or hatch covers?
Weld additional steel plates to the deck and/or hatch covers where stack loads are transmitted
Load the cargo under-deck instead
Stow the cargo on timbers of sufficient thickness so as to distribute the stack load
What name is given to all the knives, forks, spoons, etc?
Sutlery.
Crockery.
Cutlery.
Butlery.
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
Which of the following cargoes would normally require surrounding empty cargo tanks, void spaces and ballast tanks to be inerted prior to loading and maintained in that condition while the cargo was on board?
Propylene Glycol.
Propionic Anhydride.
Propylbenzene.
Propylene Oxide.
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
A range of dangerous goods are to be loaded on a General Cargo Vessel; the segregation requirements of the cargo are given in which publication?
The Cargo Securing manual
The IMO Bulk cargo Code
The IMO International Maritime Dangerous Goods Code
IMO SOLAS Handbook
What is meant by the term 'hold space' in relation to a liquefied gas carrier?
The space where the ballast tanks are situated.
The space enclosed by the ship's structure in which a cargo containment system is situated
The space between the individual cargo tanks.
The space where the cargo is carried.
What term is applied to the arrangement by which liquid chemicals are stowed on board, so that potentially reactive chemicals are not placed in adjacent compartments?
Segregation.
Diversification.
Pre-stowage.
Separation.
In describing oil cargoes, what is "sour crude"?
A crude oil from West Africa
A petroleum product which reacts with water during tank-washing, leading to a distinctive odour about the tank deck
A crude oil cargo which has left substantial residues in the bottom of the tank after discharge
A term used to describe crude oil or products containing appreciable amounts of hydrogen sulphide and / or mercaptans
Which of the following can be considered to be two of the main requirements for a paint coating for a cargo space of a General Cargo Vessel?
Low odour and heat resistant
Easy to clean and dark in colour
Light reflective and compatible with edible cargoes
Corrosion resistant and heat resistant
The compass binnacle on the ship has various specific functions, which of the following answers reflect its most important functions.
Provides a non-magnetic housing for the compass
All of the answers provided
Houses the soft iron correctors
Houses the corrective magnets
Which of the following is the purpose behind holding a pre-cargo transfer meeting before discharging a number of chemical grades?
To enable the master to confirm that ship's personnel have been advised of the cargo operation requirements on the Vessel Particular Questionnaire mailed to the ship's agent prior to arrival in port.
To ensure that all personnel involved are aware of the details of the proposed cargo operation, the services required and the safety considerations.
To establish tank readiness and the status of any other pre-operation preparations in order for the master to be able to confirm a time of arrival.
To ensure that the responsibility for all items on the Ship/Shore Safety Checklist is assigned and understood before the vessel arrives alongside.
What is the name of this unit?
A liferaft release unit
An antistatic release unit
A hydrostatic release unit
A slip hook
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.
When talking about the properties of an oil cargo, what does "flammable" mean?
When it catches fire, flames may be seen, as well as smoke.
That it does not need an external ignition source to cause it to burn. It will do so by itself.
That it is not capable of burning.
That it is capable of being ignited and of burning.
The water cooling space on the turbocharger is damaged and you have no spares. The cooling water must be closed. Which steps would you take to ensure least possible damage?
Make no modifications, but tell the duty engineer to pay special attention for abnormalities
Run the engine at a lower speed
Cool the turbocharger by means of air.
Dismantle the rotor and assemble the sealing plate
A 5V dc source has an internal impedance of 0.2 ohms. When a load of 2.3 ohms is applied what voltage will be measured at the source terminals?
4.8 V
4.6 V
5.0 V
5.2 V
A new joint is needed for a steam condensate drain line. What is the most suitable jointing material to use?
Cork jointing
Cotton reinforced rubber insertion.
Plain fibre jointing
Wire reinforced fibre jointing.
What name is applied to foods (in particular meat) that have been prepared according to the rules of Islam?
Kamal.
Hamal.
Tamal.
Halal.
Prior to personnel being allowed to work inside cargo tanks on a liquefied gas carrier the tank atmosphere must be checked. What are the required readings for oxygen content and hydrocarbon gas content of the tank atmosphere before normal entry permits are issued and entry into cargo tanks is allowed according to the IMO Gas Codes?
21% oxygen by volume and 1% hydrocarbon by volume.
20% oxygen by volume and 1% of LEL for hydrocarbon
20% oxygen by volume and 0% hydrocarbon by volume.
21% oxygen by volume and 0% hydrocarbon by volume.
When handling drugs…
Wear skin protection and a facemask.
"Briefly inhale powders, fumes or vapours to verify the substance is a drug."
Test out the potency of the drug.
Shut off the ventilation in the room where the drugs are being stored to ensure any vapours or fumes do not spread to other parts of the ship.
There are a number of standard reliquefaction plants commonly fitted onboard LPG and other liquefied gas carriers. What type of reliquefaction plant is required for a cargo of Ethylene Oxide?
Two-stage direct cycle.
Cascade direct cycle.
Indirect cycle.
Single-stage direct cycle.
Crewmen are carrying out maintenance work in the engine room on overtime. The work does not affect machinery operation. At the end of normal working hours, what should the Engineer on Duty do?
Switch to UMS-mode and leave the engine room as normal.
Continue with manual operated engine room until the maintenance work is finished.
Switch to UMS-modeand inform the crewmen not to touch any of the machinery.
Leave the engine room after asking the crewmen to switch to UMS once they have finished working
When operating a propulsion installation consisting of medium speed diesel engines driving a controllable pitch propeller it is possible to operate the combination of engine speed and propeller pitch in a number of different ways. What would be the main reason for operating with constant speed and variable pitch?
To allow the engine to be operated with a load sensing governor instead of a speed sensing governor.
To allow rapid load change and thrust reversal when manoeuvring.
To obtain maximum propeller efficiency over the load range of the engine.
To allow constant speed operation of a shaft generator while the engine load changes with pitch variation.
The fuel consumption for the main engine is calculated using the readings from the supply and return flow meters which are of the positive displacement type. When compared to the quantities calculated from tank soundings and calibration tables and indicated on the contents gauges the consumption appears consistently high. Which of the options given is the most likely cause of this discrepancy?
The supply flow meter is giving too high a reading due to internal wear.
The tank calibration tables are incorrect.
The tank contents gauges are calibrated for the wrong fuel type.
The return flow meter is giving a low reading due to internal wear.
Which is the "CAPSTAN", in the figure?
The Capstan is indicated by A, in the figure
The Capstan is indicated by D, in the figure
The Capstan is indicated by C, in the figure
The Capstan is indicated by B, in the figure
What are the symptoms that would indicate the filter/drier unit in a refrigeration system was becoming blocked?
A large temperature drop across the drier with possible icing of the casing.
Pressure drop before the driver.
A hammering noise from the drier.
The drier casing temperature increases.
What is the correct definition of: -fair lead?
Where the mooring lines lead.
A remedy leading to fairway.
A lead to test the bottom.
A remedy to close the holds.
The best way to ensure you get the equipment you need is to:
Buy what everyone else is buying.
Determine your needs and do some research.
Buy the most expensive equipment on the market.
Buy the newest models.
A plate type heat exchanger in a central cooling system has seawater leaking around the edges of some of the titanium plates. After inspection and reassembly following the manufacturer's instructions the problem still exists. What action, from the options given, should be taken to rectify the problem?
Fit new gaskets to the each of the plates.
Keep tightening the plate stack until the leakage stops.
Reduce the pressure of the sea water.
Scrap the plates and replace with a new plate stack.
What is the purpose of "fire wires" on an oil tanker and when would they be positioned?
They are quick release wires used in port that can be automatically let go from on board if there is an emergency in the terminal
They are lines postioned at the bow and at the stern of a tanker in port, for the purpose of towing the ship off the berth in an emergency
They are wires hung overboard when at a berth or an anchorage for securing fire tenders and other emergency craft alongside in the event of a fire onboard
They are the control wires that run from the manual control points on deck to remotely start the emergency fire pump
Many chemical tankers are fitted with deepwell centrifugal cargo pumps. What is the process by which any leakage of cargo or hydraulic oil into the pump cofferdam is detected?
Proving.
Stripping.
Purging.
Purifying.
Which of these can be loaded in the same hold of a General Cargo Vessel, as steel coils?
Hygroscopic cargoes
Chemicals
Fertilizers
Steel rebars
Which of the following insulation materials that are used onboard gas carriers has the highest diffusion resistance?
Mineral wool.
Polyurethane foam.
Perlite.
Air.
When operating a steam boiler burner unit what is the best method for evaluating that the correct amount of excess air is being supplied to the furnace?
The colour of the flame in the furnace.
The reading from the flue gas oxygen analyser
The length of the flame in the furnace.
The colour of the exhaust leaving the uptake.
What is associated with carrying logs on General Cargo vessels?
Moisture absorption in the cargo holds
Increased levels of oxygen in the cargo holds
Spontaneous combustion
Oxygen depletion in the cargo holds
With the set point at the actual desired value, a temperature control system is giving an unacceptably large offset (difference between set point and measured value) on high load resulting in a low system temperature. Which of the actions given in the options should be taken to reduce this effect and therefore achieve closer control of the temperature?
Increase the set point to a value above the actual desired value
Crack open the manual bypass valve for the control valve.
Increase the width of the proportional band for the controller.
Reduce the width of the proportional band for the controller.
How many two-way VHF radiotelephone apparatus shall be provided on board a ro-ro passenger ship of 500 gross tonnage and upwards?
3
2
It is required to have a fixed two-way VHF fitted in a survival craft
One for each survival craft
This online test consists of 90 random questions from CES 5.1 tests on a topic of your choice.