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Proteinic foams have the feature of being?
Of high expansion, not easily contaminated by hydrocarbons
Of low expansion, not easily contaminated by hydrocarbons
Of high expansion, made of tense-active compounds
Of low expansion, viscous and solid, easily contaminated by hydrocarbons
By running a centrifugal pump what will happen if the NPSHA (Net positive suction head available) is less than NPSHR (Net positive suction head required) ?
The pump will not draw liquid.
The pump will suffer damage
The pump needs to run faster.
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
To announce an important navigational –or meteorological warning via the VHF-installation, one should use the:
What is the correct understanding of the term "a ship with good Directional Stability"?
A ship which when the rudder is left amidships, it will continue on approximately a straight course
A ship where the amount of positive transverse stability (GM) will vary with the direction of the ship's head.
A ship which will maintain its course unless large rudder angles are applied.
A ship which when a rudder angle is applied and the ship starts to swing, will continue to swing even after the rudder is returned to amidships
The rudder is hard over when steaming at full ahead in shallow water. How much "lift force" remains when the engine is stopped?
There will be lift force remaining
High Voltage (HV) cables are smaller than low voltage cables for a given power rating. Why is this?
The HV cable uses Aluminium conductors and therefore requires them to be a smaller cross-sectional area.
The HV cable carries a smaller current and therefore requires less copper.
The HV cable uses higher quality copper conductors and therefore requires them to be a smaller cross-sectional area.
The HV cable has a thinner wall of special insulation material.
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 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 interface.
It is important that tools are in good condition when they are being used for maintenance. Incorrectly sharpened tools can be dangerous. Which of the following tools can be safely sharpened using a pedestal grinder?
Double-bottom tanks of a General Cargo ship are to be ballasted with sea water; which of the following are the most important checks to be made ?
All air vent pipes open and clear, pipeline valves open to correct tanks and other tank valves checked closed
All air vent pipes open and clear, pipeline valves closed to correct tanks and other tank valves checked open
All air vent pipes closed ,pipeline valves open to correct tanks and other tank valves checked closed
All air vent pipes open and clear, pipeline valves open to all tanks
Training manuals for Life Saving Appliances and Fire Fighting systems and equipment shall be provided in crew mess room, recreation room or in each crew cabin. The training manuals shall explain the following in detail:
General Emergency procedures
Emergency procedures including alarm signals, general instructions and safety practice onboard, specific information on equipment, operation of equipment
Alarm signals and donning of lifjackets
Manufacturer's specific information on equipment including maintenance procedures, operation of equipment
On a RoRo vessel, what is Safe Working Load (SWL) with regard to cargo lashings?
The maximum load that can safely be applied to lashings
The minimum load that can be applied to lashings
The ultimate stress of cargo lashings
The load beyond which lashings will fail
At the design phase of a container ship, how is the loss of strength resulting from the large deck openings, compensated?
Large deck beams longitudinally and athwartships at the sides and ends of hatches
Additional transverse bulkheads
Large doubling plates at the hatch corners
Additional longitudinal bulkheads
Where are cargo hold water level detectors required to be fitted on bulk carriers?
At the port and starboard midship sections of each cargo hold
At the forward end of each cargo hold
At the after end of each cargo hold
During inspection of a cylinder of a large slow speed diesel engine it is noted that there are hard deposits around the upper part of the piston crown above the top ring groove and also some evidence of scuffing on the liner wall. From the options given select the one which is the most likely cause of this problem.
The piston cooling is inadequate causing overheating.
The fuel oil being used has too high a sulphur and ash content.
Insufficient cylinder oil is being supplied.
Cylinder oil with TBN to great for fuel grade is being used.
In a fresh water tank with a height of 5 meters we shall use a pressure transmitter for level measurement. The tank has a vent-pipe leading to deck 8 meters above the top of the tank. What pressure shall we use as a guidance when ordering the pressure transducer?
A simple level control for a water tank consists of a horizontal lever with a float at one end and a filling valve at the other. The lever is provided with an adjustable pivot positioned between the valve and the float. How will the 'offset' in the system be affected under changing demand conditions if the pivot is moved closer to the filling valve?
It will increase the offset across the demand range.
It will reduce the offset on low demand but increase it during high demand.
It will increase the offset on high demand but reduce it on low demand.
It will reduce the offset throughout the demand range.
Before commencement of any work aloft, you should carry out risk assessment of the worktask. What kind of extra personal protective equipment is required as a minimum to carry out the work?
Carry out the work without extra personal protective as long as no one sees what's going on
All personnel who are working aloft, where there is a risk of falling more than two metres, should wear a safety harness (or belt with shock absorber) attached to a lifeline.
As long as someone is supporting the ladder there is no need for extra personal protective equipment
Can containers carried on multi-purpose or general cargo ships be lashed with lashing wires and chains?
Yes, if provided for in the vessel’s Cargo Securing Manual (CSM)
Yes, together with dedicated container lashing equipment
What are the responsibilities of a watch-keeping engineer?
The responsibilities of a watch-keeping engineer are to inform the Master of all events that occur duing the watch.
The responsibilities of a watch-keeping engineer are to inform the Chief Engineer of any situations that cannot be controlled during the watch
The responsibilities of a watch-keeping engineer are to by-pass, adjust and isolate all machinery under his supervision.
The responsibilities of a watch-keeping engineer are to ensure that all engine room ratings are wearing protective clothing.
What is one way to try to overcome people's fears about loved ones?
Inform them about the nature of the emergency.
Prevent them from looking for their loved ones.
Assure them that the crew is sweeping the entire ship for passengers.
Give them a lifejacket to put on.
What name is given to the process of discharging water from a designated slop tank whiler minimising the disturbance of the oil layer on top, with the objective of removing as much water as possible?
What name is given to the rotating jet water outlets on a tank-cleaning machine that is used on an oil tanker?
Indicate the correct name for the part marked on the sketch:
Too high exhaust temperature in one cylinder becomes because of:
Leakage in the inlet valves.
Poor cylinder condition – blow by –including leaking exhaust valves.
Too low admission on fuel injection pump.
The amount of cylinder lubricating oil feed to the cylinder is too small.
What would be the most likely cause of a smell of "rotten eggs" in the upper casing of the engine room?
Fresh water evaparator malfunction.
Open or leaking acetylene bottle.
A leak of exhaust gas from a boiler or diesel engine exhaust.
Failure of the ship's refrigeration system.
You can reduce the need for security guards in certain areas by installing:
What medium is used to calibrate the ODME?
When documenting Crude Oil Washing operations in the Oil Record Book, which of the following must be included in the sequence of entries?
The ullage in the tank at the commencement of washing
The ship's speed during the washing operation
The method of establishing that the cargo tanks were dry
The average oil cargo temperature during the washing operation
For how long must you save the printouts from the ODME?
Until the end of the voyage.
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.
You must not attempt to move a casualty carelessly, if you suspect patient with:
Prior to its partial removal in a water scrubber, what is the approximate Sulphur Dioxide content of flue gas produced by the combustion of fuel oil?
What is the name of the device used for continually checking ballast water as it is pumped overboard?
Ballast Content Monitor (BCM)
Oil Discharge Monitoring Equipment (ODME)
Water Disposal Process Sensor (WDPS)
Ballast Handling Unit (BHU)
As part of the routine duties a rating on boiler watch is requested to assist with the daily chemical treatment for the boiler and feed water systems. Where will the rating find the information relating to the hazards associated with the chemicals involved in this task?
The engine room log book.
The Code of Safe Working Practices for Merchant Seamen.
The Chief Engineer's standing orders.
The material safety data sheets supplied with the chemicals.
When should steel cargoes be ventilated?
When ambient air temperatures are rising
When passing from a cool to a relatively warm climate
When passing from a warm climate to a warmer climate
When ambient air temperatures are falling
What are the requirements for the number of portable gas measurement instrument(s) on tankers?
At least one instrument for measuring %LEL and one instrument for measuring volume %
Sufficient number of instruments.
At least 2 portable instruments for measuring flammable vapours.
At least 1 portable instrument for measuring flammable vapours.
On the figure there are four (4) possible definitions of the term "AIR DRAUGHT" given. Which one is the correct one?
Air draught is given by B on the figure
Air draught is given by A on the figure
Air draught is given by D on the figure
Air draught is given by C on the figure
What do the letters "VOC" stand for when discussing types of oil cargo?
Volatile Organic Compound.
Volumetric Oil Calculation.
A cargo space is being prepared to load a refrigerated cargo. An inspection of the space has revealed some dark areas of mould on the bulkheads. Which of the given options is the best action to take in such circumstances?
Since the mould will be odourless it can be left in place.
The mould should be scraped off with a steel goose necked scraper.
The mould should be removed by scrubbing the area with clean water containing the correct concentration of an approved fungicide.
The mould should be painted over with an appropriate marine paint.
What collective culinary term is given to the internal organs of a butchered animal, such as the heart, kidneys, liver, tripe, etc?
Which of these statements about drug smuggling is true?
"The preventative measures you incorporate into your ship’s security plan should be exhaustive, regardless of the level of threat identified by your ship’s security assessment."
The risks to ships are not restricted to specific areas or trading routes.
Drugs are difficult to conceal onboard a ship.
"Drug smuggling is only a problem in certain ports, so only ships sailing in those ports need to implement preventative measures."
Which of these situations will not result in an emergency shutdown of cargo operations?
Failure of the hold ventilation system
The vessel developing and sudden and unexpected list
The loading ramp being lifted clear of the jetty
What would be the most probable cause of the exhaust gas temperature from one cylinder of a diesel engine being lower than normal?
The opening pressure for the injection valve for the cylinder is set too high.
There is air in the fuel oil system.
The intake filter for turbo charger is partly fouled.
The camshaft chain is too slack.
On a General Cargo Vessel the Tonnes per Centimetre (TPC) of a vessel is 30; the present mean draught of the vessel is 6.90 m and the maximum summer load draught is 7.00m; Calculate the amount of cargo that can still be loaded?
The amount of cargo that can still be loaded is 300 tonnes
The amount of cargo that can still be loaded is 3000 tonnes
The amount of cargo that can still be loaded is 30 tonnes
The amount of cargo that can still be loaded is 3 tonnes
Inert gas drawn from an in-line unit in the main or auxiliary boiler exhaust cannot normally be used in a chemical tanker carrying high-spec products. Why is this?
Because MARPOL severely restricts the cleaning to sea of tanks that have been inerted in this way, unless additional prewashing has first been carried out. This results in the generation of slops which reduce cargo carrying capacity and incurs disposal costs.
Because the gas drawn from such a source cannot be guaranteed to be below the Lower Explosive Limit.
Because the levels of hydrocarbons and suspended soot particles will have a significant negative impact on cargo quality and tank cleanliness.
Because connection between boiler exhaust systems and cargo containment arrangements is forbidden under the IBC Code.
Vapour Leakage. A small leakage of vapour through the membrane may not be readily obvious. However, indications are likely to be:
A sudden rise in the percentage of methane vapour in one primary insulation space.
Temperature change will be obvious.
Water building up in the insulation space.
One of the two water level gauge glasses on the high pressure boiler steam drum has started leaking quite heavily. What action, from the options given, should the boiler watch rating take?
Inform the Officer of the watch immediately so that arrangements can be made to replace the leaking glass.
Try and stop the leak by tightening up the clamping bolts as much as possible.
Place a bucket underneath the leak to catch the water to prevent the area becoming slippery.
Shut the steam and water connections to the gauge glass to minimise the loss of water and just use the other glass to check the water level.
How is the condenser cooling water flow regulating valve automatically controlled in a vapour compression refrigeration system?
By the compressor discharge pressure.
By the quantity of refrigerant in the system.
By the temperature of the refrigerant after the evaporator.
By the temperature in the refrigerated room.
Why do we use stabilisers on passenger ships?
To adjust the trim of the vessel
To decrease the dynamic stability
To increase the intact stability
To decrease the rolling angle of the vessel
What is the correct name of the part highlighted in the sketch?
The correct name of the part highlighted in the sketch is: Cylinder relief valve
The correct name of the part highlighted in the sketch is: Cylinder air start valve
The correct name of the part highlighted in the sketch is: Fuel injector
The correct name of the part highlighted in the sketch is: Cylinder lubricator
What is Breaking Stress with regard to cargo lashings?
The maximum stress that can be applied to a cargo lashing
The maximum load that can safely be applied to a cargo lashing
The safe working load of a cargo lashing plus 10 percent
The load beyond which a cargo lashing will deform
How should steel wire rod coils be stowed?
With their cores aligned athwartships
With their cores aligned vertically
With their cores aligned fore and aft
With their cores aligned alternately fore and aft and athwartships
What must be checked carefully before commencement of ballasting tanks on a bulk carrier, when operating in very cold conditions?
Air pipes and sounding pipe open
No special precautions need to be taken.
Air ventilator pipes closed.
All air ventilators are open and free from ice build up.
What is done at a Quadrennial Thorough Survey?
Derricks are tested and parts of derricks thoroughly examined
Deck cranes are tested and their parts thoroughly examined
What is the denomination for API?
Long tons at 60 degrees Fahrenheit.
Metric tonnes at 60 degrees Fahrenheit.
An abbreviation of American Petroleum Institute.
Cubic metre pr. volume unit.
On a Container vessel, where should containers with untreated fishmeal cargo be carried?
On deck away from sunlight
Separated from class 4.2 containers
How can the pressure be regulated during start up of a positive displacement pump such as a gear pump?
By throttling the discharge valve
By throttling the suction valve.
Positive displacement pumps operate at constant pressure and cannot be regulated.
Adjustment of the pressure relief valve to recirculate part of the flow.
One of the purposes to MARPOL Annex I is to:
Ensure that the ships certificates are valid.
The tanker is en-route and meets certain discharging conditions.
Prevent operational oil pollution by providing ships with discharge criteria and other guidelines to follow.
Prevent sea-going incident involving tankers.
It is common practice to connect a resistor is connected over an alarm contact (see diagram) in many applications. Why is this connection used?
To stabilise power consumption.
To avoid sparks on the contacts when opening and closing.
Enable measuring the total resistance of the circuit.
To monitor the cable/wires for break.
Which of the following measurements will include a D/P transmitter in the control-loop
Normally, a vessel sails in salt water and therefore salt water draughts are those which are referred to. If there is a change in density however, this must be taken into account because the true draughts of the ship will change. Which of the definitions below is that of this "Fresh Water Allowance"?
The number of millimetres by which a vessel's True Mean Draught changes when she passes from salt water into a dock of a different water density.
The number of millimetres by which a vessel's True Mean Draught changes when she passes from salt water to fresh water, or vica versa.
The allowance assigned by the Classification Society when the vessel is built, to indicate the compensation that may be applied during topping off to allow for dock water density.
The number of centimetres by which a vessel's maximum draught is calculated to increase when she passes from salt water to fresh water.
The pressure control of a vessel's domestic water system, which includes a hydrophore tank pressurised by air, is achieved by stop/start of the fresh water pumps using pressure switches. How should the system be prepared for first use to give correct operation of the pressure control?
Fill the hydrophore tank to approximately 75% full with water and then pressurise with air up to the pump cut out point.
Fill the hydrophore tank up with freshwater allowing it to compress the air already in the tank and then adjust the pump cut out to match the pressure in the tank when it is almost full.
Pressurise the hydrophore tank with air to approximately 50% of the pump cut out pressure and then allow the pump to fill the tank until it cuts out.
Fill the hydrophore tank completely with water and then pressurise with air up to the pump cut out point.
On a General Cargo Vessel, what must be ensured when using ship's cargo gear in hot climates?
That the cargo gear register in up to date
That stevedores handle cargo gear in the proper manner
That all cargo gear is appropriately marked
That grease from wire falls does not fall onto cargoes being loaded or discharged
For a search to be effective it must be:
Conducted by personnel with limited knowledge of the ship’s layout.
Inclusive of all personnel.
To Sweep the Ship in an emergency means that crewmembers are:
giving safety announcements from the bridge
sounding alarm bells from the bridge
searching for passengers in cabins or other hidden places onboard
directing passenger crowds to muster and embarkation stations
Furniture in stairways and corridors shall be kept to a minimum on board passenger ships, why?
Escape routes must be clear of obstructions and also due to fire protection
It is not allowed to sit in stairways and corridors
Passengers will most probably sleep in stairways and corridors if they are furnished
Why do we insulate cargo tanks and other components?
To protect the crewmembers.
To prevent heat flow in the cargo, and to protect the ship's bunker tanks.
To prevent heat flow into the cargo, and to protect the ships structure.
What is Maximum Securing Load?
The load capacity of a device used to secure cargo on board
The combined safe working loads of various devices used to secure an items of cargo on board
The combined capacity of several devices used to secure an item of cargo on board
The safe working load of a device used to secure cargo on board
Hydrocarbons belongs to a chemical group named:?
After clearing lines following the loading of cargoes such as Naphthas, Xylene, Toluene, Benzene, White Spirits and Kerosenes, it is necessary to wait for a specified period before taking manual ullages or samples. Why is this?
These are all "static accumulator" cargoes. As a cargo line is blown, electrostatically charged bubbles enter the tank and rise through the cargo, generating a high voltage at the surface. It is necessary to wait for a specified period of "relaxation time", to allow the charge to disperse, before introducing any potentially conductive object.
These are all cargoes which may form a wax on the surface of the cargo. As a cargo line is blown, bubbles enter the tank and rise through the cargo. If exposed to cold air as they reach the surface, a wax "carpet" may form across the whole tank. It is necessary to wait for a period of "levelling time" before allowing any air to enter the tank and taking any manual ullages or samples.
These are all cargoes with a high vapour pressure. As a cargo line is blown, the pressure in the ullage space above the surface of the cargo increases. It is necessary to wait for a period of "settling time", before opening the tank lids for sampling and gauging.
These are all cargoes considered to have high noxious vapour levels. As a cargo line is blown, the surface inside the tank is severely disturbed, releasing large quantities of these vapours. It is necessary to wait for a period of "adjusting time", before carrying out any open sampling or gauging.
What is a "closed discharge" operation on an oil tanker?
A discharge operation which is commenced with all manifold and tank valves on the vessel initially set in the closed position
A discharge operation carried out without opening any lids or sighting ports and where gauging is performed either by a fixed system or by a portable system gaining access through a vapour-lock.
A cargo discharge which is performed to a shore tank directly adjacent to the berthed vessel and which is wholly controlled by a terminal operator
The pumping of tank washings, conducted through underwater discharge outlets only
Liquefied gas is, by IMO, divided in to different groups. What is the criterion for this division?
The boiling point, chemical bindings, toxicity and flammability.
The nitrogen and other hydrocarbon containment.
Many gas carriers are designed to carry liquefied petroleum gas (LPG). How is LPG defined in the IMO Gas Codes?
LPG is defined as butane and ethane or a mixture of both.
LPG is defined as propane and butane or a mixture of both.
LPG is defined as propane and ethane or a mixture of both.
LPG is defined as propane and methane or a mixture of both.
A galley hot plate uses a Nichrome / Magnesium Oxide heating element and is to be tested before being put into service for the first time. An insulation resistance test yields a reading of 0.3 M Ohm. Which action should be taken?
Wash the element in a degreasing agent. Then retest and if ok put it into service.
Put the element into service.
Apply reduced voltage to the element for a few minutes. Then retest and if ok put into service.
Large slow speed diesel engines are usually of the crosshead type and have various arrangements to deliver lubricating oil directly to the crosshead bearings and guides to ensure adequate lubrication. Why are the crosshead bearings considered differently to the other bearing in this type of engine in respect of lubrication requirements?
The lubricating oil has further to travel to the crosshead bearing and so a separate arrangement is necessary
The crosshead bearing is more heavily loaded than other bearings in the engine so requires more oil to keep it cool.
The crosshead bearing is closer to the engine cylinder and therefore runs hotter.
The running surfaces oscillate relative to each other during operation rather than rotate and therefore full film hydrodynamic lubrication is not possible.
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?
What does the term 'stoichiometric mixture' mean when used in relation to combustion of hydrocarbon fuels?
A ideal mixture of fuel and air in which all of the fuel in the mixture is consumed during combustion.
An ideal mixture of fuel and air in which all of the fuel in the mixture is consumed during combustion with a minimum of excess air.
An ideal mixture of fuel and air in which all of the fuel and oxygen in the mixture are consumed during combustion.
A ideal mixture of fuel and air in which all of the oxygen in the air in the mixture is consumed during combustion.
What measures should be taken when handling mail?
Wear rubber gloves and protective clothing when opening suspicious looking mail.
Open any mail that looks suspicious.
Tear open letters with your hands.
X-ray or scan parcels before opening them.
According to the IMO Gas Codes, what are the maximum time intervals for sampling and analysing samples from the permanent installed gas detection system?
A refrigeration plant is short cycling even though there is plenty of refrigerant in the system and all of the rooms are above temperature. From the options give select the one which is the most likely cause of the problem?
Low oil level in the sump causing the automatic low oil pressure cut out to operate.
Blocked filter drier causing the automatic low pressure cut out to operate.
Insufficient cooling water flow through the condenser causing the automatic high pressure cut out to operate.
Ice formation in the meat room evaporator coil causing the automatic low pressure cut out to operate.
The purpose of remotely controlled measuring of tank levels are to measure:
Height from bottom shell to top stringers in the tank
Height of liquid in the tank
Height from liquid surface to top stringers in the tank
Height of bottom girders in the tank
You are to load a cargo ofIsocyanate to tank 4CP and the cargo hose from shore is to be connected to a flange directly adjacent to the cargo pump, so that the manifold cross-over and deck cargo line are not used. What must you place underneath the connection?
Some sawdust or other absorbant material.
A label stating "portable connection".
When considering the successful delivery of a perishable cargo, select, from the options given, the thing over which the carrier has least control.
Relative humidity in the hold.
Gas content in the hold atmosphere.
One of the checks during the annual Class survey of the UMS functions is focusing on cleanliness of the engine room. What is the reason for such a check ?
To avoid frequent alarms.
To prevent risk of pollution.
To reduce the general risk of fire in an unmanned engine room.
To have the engine room looking tidy.
What do you call the plan on board dealing with the distribution of the crew and their duties at fire fighting?
How much food per person is supplied in a lifeboat?
None - only barley sugar sweets supplied
If you detect a fire on board the ship, dependent on the situation, which of the following actions is the first to be taken?
Call the officer on duty.
Try to kill the fire immediately by use of fire-extinguishers or other adequate appliances.
Check all nearby compartments for survivors.
During operation of the main engine, the heat absorbed by lubricating oil is removed by the: