Тест состоит из 80 случайных вопросов.
Всего вопросов по данной теме: 171
When is it compulsory to use emergency wires/fire wires for mooring the vessel?
During loading/discharging of persistent/non-persistent oil.
At all terminals where tugs are available.
When requested by the terminal staff.
At the terminals in Canada and USA.
What symptom would you think shows that the freon filter drier has become blocked?
Pressure rise before the drier.
A large temperature drop across the drier.
A hammering noise from the drier.
A hammering noise from the compressors.
What is the most likely reason for vibration and noise at the suction side of a centrifugal pump when it is running?
Fluid friction in the suction line.
Collapsing vapour bubbles due to cavitation.
Water hammer in the pump casing.
Pump suction valve fully open.
Which is the “Windlass”, in the figure?
The Windlass is indicated by D, in the figure.
The Windlass is indicated by C, in the figure.
The Windlass is indicated by A, in the figure.
The Windlass is indicated by B, in the figure.
According to the industry guidelines in the ISGOTT Guide and assuming terminal regulations do not require otherwise, what action should be taken to drain accumulated water from the deck during cargo handling operations in rainy conditions?
The accumulated water is to be drained periodically and the scupper plugs to be immediately closed once the water has been run off. Water containing oily residues is to be transferred to a slop tank or other suitable receptacle.
The scupper plugs are to be kept closed and sealed; any volume of water that is not contained should be allowed to flood over the fishplate.
During periods of heavy rain, it is considered prudent and safe to allow water to drain continuously; therefore scupper plugs should be removed in such conditions.
The accumulated water is to be transferred to a spare tank.
When lashing general cargoes why are short lashings preferred to long ones?
Because they are more easily tightened and held in tension.
Because long lashings are more prone to vibration.
Because some of the ship’s lashing points may not be designed to hold long lashings.
Because the safe working load of lashing materials decrease with length.
When discussing the properties of an oil cargo, what is the “wax content”?
The percentage of paraffinic wax by volume, based on a representative sample of the crude oil.
The amount of additive in an oil product, expressed in ppm, designed to inhibit solidification at lower temperatures.
The observed volume percentage of waxy deposits found in a cargo tank after discharge in relation to the total volume of cargo previously carried.
The percentage of wax, expressed as a percentage, remaining in an oil product after distillation.
Which is the “PANAMA LEAD”, in the figure?
The Panama Lead is indicated by A, in the figure.
The Panama Lead is indicated by B, in the figure.
The Panama Lead is indicated by C, in the figure.
The Panama Lead is indicated by D, in the figure.
This circuit consists of two capacitors, C(1) = 6 μF and C(2) = 12 μF, in series. Calculate the equivalent C(S) of the two capacitors.
Feed check valves for main and auxilliary purposes are normally of the double shut off type, as shown in the diagram. What is the main function of the non-return valve?
To prevent the steam and water in the boiler from discharging out by the feed line, if a feed line fracture or a joint in the line blows.
To increase the workload for staff when overhauling the boiler.
To allow overhaul of the screw down valve when the non-return valve is shut and the boiler is steaming.
To allow fine tuning of feed water flow to the boiler.
On a Container vessel, what determines how containers should be lashed?
Advice from shore planners.
The cargo securing manual.
What are the compressors fitted as part of the cargo system onboard LNG carriers normally used for?
Inerting and gas freeing the cargo tanks.
Having a CO2 alarm during normal working hours, what immediate action should be taken?
Get out of the engine room as soon as possible.
Get into the control room.
Which of the following is a chemical commonly added to cleaning substances used to clean galley areas?
Considering the range of sensitive liquid chemicals which routinely require wall-wash prior to loading, what product is mainly used as the rinsing agent in wall-washing?
In case of diesel driven fire pumps, for how long shall the fuel tank capacity allow the pump to be run at full capacity? (SOLAS II-2/4.3.3.2.3).
What should you do if the temperature of Hydrogen Peroxide Solution 65 % carried is raising 2 °C per 5 hours and the temperature is above 40 °C?
No special action to be taken.
To avoid uncontrolled decomposition the cargo should be discharged overboard.
The cargo should be heated up to 45 °C.
The cargo should be monitored closely for the next 12 hours.
What action would you take if the performance of a plate type heat exchanger was falling off even though flow rates and pressures of the primary and secondary fluids were normal?
Clean the heat exchanger.
Increase the flow of both fluids.
Add some more plates to the exchanger.
Increase the pressure of both fluids.
You are inerting a cargo tank on an oil tanker, prior to gas-freeing for entry. What is the maximum permitted oxygen content in the inert gas main as required by SOLAS 1974?
What contributes most to rust formation on vehicles/Ro-Ro units?
Cargo hold ventilation systems and associated ducting.
Pipes passing through cargo holds.
Hydraulic units in cargo holds.
What action should be taken if the heat transfer capacity of a heat exchanger operating as a lubricating oil cooler is reducing?
The heat transfer surfaces should be cleaned.
Increase the cooling water pressure.
Increase the lubricating oil flowrate.
Decrease the lubricating oil flowrate.
At what calendar interval must lifting appliances on board a vessel be suitably tested by a competent person?
The circuit consists of two inductors, L(1) = 6 H and L(2) = 12 H, connected in parallel. Calculate the equivalent L(S) of the two inductors:
A contractor is hired to install new navigation equipment onboard your ship while it’s berthed. For a period of time he’s left unsupervised and photographs schematics of the ship that he finds rolled up and stored in the corner of a nearby office. Later, from home, he hacks into the network and prints off information about the ship’s security procedures. Which of these information security measures would have prevented his unauthorized access?
Secure area, passwords, a firewall and a secure network.
Protective markings, reference checks, and passwords.
Firewall, protective markings, vetting and a secure network.
Secure area, passwords, a firewall and protective markings.
On a RoRo vessel, when loading Double Stacked containers on Maffi Trailers how many twist locks should have used between 2 containers?
One on every corner, 4 in total.
One at each end, 2 in total.
One at each end, 2 in total.
Three in total, 2 at the door end, 1 at the opposite end.
What nominal filling restriction exists under the IBC Code for a single tank on a type 3 chemical tanker? Not counting structural, capacity or cargo specific limitations.
There is no filling restriction for a type 3 chemical tanker.
Enthalpy is an expression of how much energy is tied up in one kilo of a substance. A substance’s total energy consists of:
External and internal energy.
What is the minimum capacity of the portable tank of a portable foam applicator?
Part of the outer surface of a refrigeration compressor crankcase and the refrigerant return line near the compressor ice up heavily during normal operation. Which of the options given is the most likely cause of this problem?
The superheat control setting for the thermostatic expansion valve is set too low.
The filter drier unit in the liquid line is partly blocked.
The seawater flow control valve for the condenser is faulty allowing insufficient cooling water flow.
The oil separator is not functioning correctly and is allowing lubricating oil to pass into the system.
In respect of washings from the cargo area of an oil tanker, what is the maximum instantaneous rate of oil that can be pumped into the sea when a vessel is outside a special area, proceeding en route, has in operation a monitoring and control system for the discharge of oil and is located more than 50 nautical miles from the nearest land?
30 litres per nautical miles.
300 litres per nautical miles.
60 litres per nautical miles.
0,03 litres per nautical miles.
On a general cargo ship, where would the fire hydrants be located?
At such locations that at least two jets not emanating from the same hydrant may reach any part of the ship normally accessible to the crew while the ship is being navigated, one of these jets coming from a single length of hose (the other jet may come from two hoses joined).
At such locations that at least two jets not emanating from the same hydrant may reach any part of the ship normally accessible to the crew while the ship is being navigated, each of these jets coming from a single length of hose.
At such locations that no part of the ship normally accessible to the crew while the ship is being navigated is located more than 20 metres away from a hydrant.
At such locations that no part of the ship normally accessible to the crew while the ship is being navigated is located more than 40 metres away from a hydrant.
Reduced capacity accompanied by vibration and noise at the suction of a centrifugal pump results from the action of vapor pockets in the fluid being pumped caused by:
Normally ventilation fans in enclosed ro-ro spaces must be run continuously whenever vehicles are on board, why?
An increased number of air changes may be required when vehicles are being loaded or unloaded, or where flammable gases or liquids are stowed in closed ro-ro spaces.
It is better to run the fans continuously instead of testing the atmosphere.
It is easier for the crew, they don’t have to think about starting and stopping of fans.
The manufacturer of the fans recommends continuous operation to reduce maintenance cost.
What is the weather associated with being in the centre of an Anticyclone (a region of High Pressure)?
Light winds and fair weather, sometimes fog.
Strong winds but with very little rain.
Strong winds and heavy rain.
Persistent rain and very humid weather.
In which way may intake of poisonous material occur?
Skin penetration and skin absorption.
If oil flows out of the bowl casing drain of a solids ejecting separator what is the most likely problem?
Oil has been fed to the separator before full speed.
The flow rate is too high.
The sludge tanks is full.
Insufficient amount of bowl closing water.
In a smoke filled alleyway where will the cleanest air be found, and how should you proceed out?
Near to the deck, crawl out keeping your face as near to the deck as possible.
Sit and wait for the rescue party.
It will be the same in all parts, therefore I would just leave as quickly as possible.
Towards the upper part, stand as tall as possible and walk out.
A drip tray containing oil is on fire. The only fire fighting equipment available is water hose with spray jet/spray nozzle. How, if at all, should you attempt to put out this fire using water?
Water should be applied in a jet to the back of the fire.
Water should be applied to the oil in a single jet only.
Water should not be used on any type of oil fire.
The water can be applied in a fine spray starting from the front in a sweeping motion.
What could be the possible cause of an engine knocking?
Faults in injection valves, injection too early.
Too big a piston clearance, worn cylinder liner.
The gudgeon pin or big end bearing having too big a clearance.
What is the correct chemical name for Caustic Soda in liquid form?
Potassium Hydroxide solution.
Sodium Chlorate solution.
Sodium Hydroxide solution.
Sodium Hypochlorite solution.
When there is doubt about the freshness of the atmosphere in enclosed or confined spaces, what actions should be taken?
Arrangements should be made for testing of the atmosphere to ensure maintenance of 21 % oxygen and a carbon monoxide content below 50 ppm in the atmosphere of the space.
Supply filter masks to all crew working on ro-ro deck.
Ro-ro decks are always ventilated in advance of an operation.
Open both bow- and stern doors.
What is the fog signal for a vessel which is engaged in towing?
Two prolonged blasts followed by one short blast at intervals of not more than 1 minute.
One short blast, one prolonged blast and one short blast at intervals of not more than 2 minutes.
One long blast followed by two short blasts at intervals of not more than 2 minutes.
Two prolonged blasts at intervals not exceeding 2 minutes.
When will a ro-ro vessel pitch heavily?
When wave lengths are equal to the ship’s length.
When wave lengths are equal to half the ship’s length.
When wave lengths are equal to twice the ship’s length.
The circuit consists of two inductors, L(1) = 6 H and L(2) = 12 H, in series. Calculate the equivalent total inductance L(S).
A bulk carrier is loading to complete on summer draught of 10,00 m when in salt water; the vessel is loading in river water; The dock water allowance is 80 mm; The maximum draught when loading is completed is:
What is the MARPOL definition of a “high-viscosity substance”?
A noxious liquid substance of any category with a pour point of greater than 37,8 degrees Celsius.
A noxious liquid substance in category “X” or “Y” with a viscosity equal to or greater than 50 mPas at the unloading temperature.
Any noxious liquid substance, the residues of which cannot be stripped from a cargo compartment and its associated piping and pumping system to equal to or less than 75 litres.
A noxious liquid substance in category “Y” with a viscosity equal to or greater than 100 mPas at 37,8 degrees Celsius.
The Training Manual shall contain instructions and information on the life-saving appliances and the best method of survival. The training manual shall contain detailed explanations of crew duties in relation to emergency situations. Which of the following tasks or duties shall be included in the manual according to present regulations?
The use of the ship’s line throwing apparatus.
The use of escape routes and other escape methodes.
The use of surface to air visual signals to be used by survivors.
The use of navigational equipment for survival crafts.
What is the purpose of adding inhibitor to the individual cargo?
To avoid explosive (flammable) area in cargo tanks.
To avoid humidity in cargo tanks.
To assure all oxygen is removed from cargo tank and avoid chemical reaction.
To avoid radicals building up in cargo tanks.
Searchlights must be provided for night navigation in the Suez Canal. Which of the listed requirements are correct?
Vessels with bulbous bow, LPG and LNG vessels must provide their own projector.
All vessels must provide their own projector.
Only projectors hired from the Canal Mooring and Light Company are permitted.
If vessels have their own projector, an extra fee will be levied on the vessel.
What is important to check when transferring a position from the GPS output to a paper chart?
Any necessary corrections are applied to convert between the GPS datum and the chart datum.
Ensure that the chart has been corrected up to date.
It is important to ensure that the GPS is setup on 2 dimensional and not 3 dimensional position fixes.
Ensure that the GPS is setup on the same datum as the chart.
Reduced capacity accompanied by vibration and noise at the suction of a centrifugal pump results from the action of vapor pockets in the fluid being pumped caused by:
You are the Officer in Charge during the loading of a tanker at a terminal in the Persian Gulf. The deck watchman reports “There is a lot of oil on the water to starboard”. What should be your FIRST action?
Tell the jettyman to stop loading immediately.
Check the Oil Discharge Monitoring Equipment (ODME).
Find out if the oil is coming from your vessel.
One water fog applicator is required for each pair of breathing apparatus on board which type of ship?
Passenger ships carrying more than 36 passengers.
Passenger ships fitted with car decks.
According to 33 CFR 156, oil tankers trading in US waters are required to test and document the testing of cargo transfer hoses and transfer pipe system. What is the minimum requirement when testing these components?
That no leakage occurs under static liquid pressure of at least 1,5 times the maximum allowable working pressure.
That no leakage occurs under dynamic fluid pressure of less than 1,5 times the maximum allowable working pressure.
That no leakage occurs at the nominal anticipated working pressure.
That no leakage occurs under static liquid pressure of at least 1,25 times the maximum allowable working pressure.
The battery of an EPIRB should be changed:
Indicate the correct name for the tool:
If the heat transfer capacity in a heat exchanger is dropping, the following action should be taken:
Clean the heat transfer surface.
What is the normal thickness of the primary barrier (membrane) on membrane containment type systems as used in LNG carriers?
You have loaded a cargo of n-Propyl Acetate to all tanks. They are each loaded to around 98 % capacity. You now have to clear the lines into the ship. What is the biggest risk associated with this operation?
Unless carefully controlled, too much disturbance will be generated in the tanks and product will be forced up the vent risers, resulting in an overflow.
Unless carefully controlled, cargo will gravitate from one tank to another.
Unless lines are cleared working from aft towards forward, they will simply fill up again as other lines are cleared.
Unless the shore personnel are cooperative, they may cease blowing before you have had a chance to clear each one of the ship’s lines.
Why are all RoRo passengers ships divided into vertical “zones”?
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.
All vertical zones are separated with watertight doors, which will be closed in the case of a grounding, etc.
There is one fire team in each zone.
How many lifebuoys can you expect to find on board a cargo ship of 190 metres in length (including those of the quick-release system)?
At least 8 distributed on both sides of the ship.
At least 10 distributed on both sides of the ship.
At least 12 distributed on both sides of the ship.
At least 14 distributed on both sides of the ship.
When 3 phase alternators are operating in parallel, it is very important that the reactive load is evenly shared so that the total alternator loads are evenly shared. If the total alternator load is the vector sum of active and reactive loads, which side of vector diagram (power triangle) shown represents the reactive load?
None of the mentioned alternatives.
At what calendar interval is a “Special Survey” required?
Is it necessary to construct a passage plan (or voyage plan), for transiting a canal or river, when under pilot?
A passage plan is always required, irrespective of the length of the voyage, or if the ship is under pilot.
A passage plan is required only when there is no pilot on board.
A passage plan is required from departure from port to arrival at the pilot station at the destination.
A passage plan is required for all deep sea passages, but not for transiting a canal under pilotage.
There are many types of pumps fitted onboard ship which an engine room rating may be required to assist with the maintenance of. Which type of pump is shown in the illustration?
If a seaman has to walk across a stow of cartons containing perishable foodstuffs what should he do to minimise the risk of damage to the contents? Select the most appropriate option from those given.
He should step on the edges of the cartons.
All parts of the carton are of equal strength and therefore it doesn’t matter which part he steps on.
He should step on the comers of the cartons.
He should step on the middle of the cartons.
Other than the official log book what other publications must be carried on board of a vessel?
ISGOTT, SOLAS, MARPOL, Bridge Team Management, OCIMF Mooring guidelines.
The official log book and crew agreement are the only two publications which must be carried on board.
Charts, nautical publications, GMDSS log, Oil Record book(s).
All technical books relevant to the machinery currently on board.
Is the master under obligation to do a maritime inquiry if a crewmember suffered a considerably injury onboard and died after a week on a hospital ashore?
Yes, if the seaman was at work.
Yes, because of the fatal consequence.
Yes, even if he/she did not die while onboard.
The frequency 121,5 MHz is used for:
What are the requirements regarding slop tank capacity on combination carriers with smooth walls (bulkheads)?
Not less than 3 % of the oil-carrying capacity of the ship.
Not less than 1 % of the oil-carrying capacity of the ship.
Not less than 1,5 % of the oil-carrying capacity of the ship.
Not less than 2 % of the oil-carrying capacity of the ship.
When is a tank gas free?
A tank is only to be considered as gas free when no traces of flammable and/or poisonous gas are measured and in addition O2 content is measured to be 21 %.
A tank is only to be considered as gas free when it has been cleaned and the O2 content is measured to be 21 %.
A tank is only to be considered as gas free when it has been cleaned, ventillated and there is no smell in the tank.
A tank is only to be considered as gas free when it has been cleaned and there is no smell in the tank.
On a container vessel, where should a mid-bay guide be positioned?
On the tank top mid-way in 40′ guides to prevent transverse movement of 20′ containers.
On the tank top at the ends of 40′ container bays.
At the base of cell guides.
Between 20′ container bays on deck.
What is polymerisation?
The process by which unsaturated chemical compounds are heated under pressure, causing the molecules to react with each other and form larger molecules.
The process by which the molecules in unsaturated chemical compounds react with each other during cooling, forming larger molecules.
The process by which saturated chemical compounds are heated under pressure, causing the molecules to react with each other and form smaller molecules.
The process by which saturated chemical compounds react as pressure is released during heating, causing the molecules to react with each other and form larger compounds.
If oil out of the bowl casing drain of a solids ejecting separator what is the most likely problem?
Oil has been fed to the separator before full speed.
Insufficient amount of bowl closing water.
The flow rate is too high.
What is the purpose of the “Mud Box” on a tanker?
It is at the end of the pipeline in the tank and restricts any particles and solids entering the pipeline system.
It is the waste collection box in the store rooms.
It is the box near the windlass to deposit the mud from the anchor and anchor cables.
It is the box under the manifold to catch spills when connecting the discharge or loading hose.
Are there any restrictions for transit of the Suez canal?
The Suez Canal is a sea-level canal. There are beam and draft restrictions for very large vessels.
There are restrictions because of canal locks.
There are no restrictions. Transit at masters discretion.
There are no restrictions. Transit at masters discretion, but pilot is compulsory.
When will a hatch cover cross-joint wedge need replacement?
When the flat spring is missing.
When the flat spring is bent.
When the flat spring is rusty.
Who shall carry out the detailed preliminary supervision of maritime service of seafarers before the commencement of service?
The seafarer’s home labour authorities.
The Norwegian Ship Control.
To make a “call-request” one should:
Select the telex in on-line position.
Select the ID of the NCS.
Select the telex in off-line position.
If your vessel was to load sugar which of these situations would result in the cargo holds failing inspection?
Traces of insect infestation in the bilges.
Hardened rust spots on shell plating.
Hardened rust spots on the lower bulkhead stool and hopper tank plating.
Rust-stained tank top plating.