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?
This circuit consists of two resistances, R1 = 6 ohm and R2 = 12 ohm, connected in series. Calculate the equivalent resistance R(S) of the two resistances.
During crude oil washing of No: 1C tank the duty deck officer reports that the oxygen reading in the tank is 9 %. What should you do?
Stop the washing process and not resume until the oxygen content in the tank below 8 %.
Carry on and ask the engineers to check the inert gas system.
Stop the washing process and not resume until the oxygen content in the tank is below 2 %.
Carry on with the washing as the reading is below 11 %.
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.
Your vessel have been in collision with another vessel. You are taking in water and you have to prepare for leaving the vessel. How will you act?
Send a distress message and collect survival suits/thermal bags.
Collect your own personal belongings.
Just jump over board and be ready.
Assist your friends to collect their personal belongings.
On board a DSC-call is to be made in case of an OBS. Choose the category:
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?
Which of the following spaces may be protected by a fixed carbon dioxide (CO2) fire-extinguishing system?
Machinery spaces of category A.
All the spaces mentioned.
Special category spaces of passengers ships.
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.
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.
When carrying LNG cargoes it is useful to have information about its thermodynamic properties. What is a common source of information that can be used to obtain values for a wide range of these properties?
Material safety data sheet.
A lifejacket is so constructed that a person can correctly do it within a period of:
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.
What is the main responsibility of a bridge lookout at night?
Inform the bridge of any new lights when they appear over the horizon or any other items observed which may affect the ship.
Inform bridge of changing weather patterns.
Inform bridge of any lights when they appear over the horizon.
Inform bridge of any other ships observed, which appear to be getting closer to your own ship.
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.
What is the required pressure when testing parts of the oil transfer system (hoses, loading arms etc.) if the test is to satisfy US Coast Guard regulations?
Test pressure equal to 1,75 times the maximum allowable working pressure.
Test pressure equal to 1,25 times the maximum allowable working pressure.
Test pressure equal to 1,5 times the maximum allowable working pressure.
Test pressure equal to the maximum allowable working pressure.
At least how often shall rescue boats be launched with their assigned crew and manoeuvred in the water?
Which class of emission is used for FEC NBDP transmissions?
In which way may intake of poisonous material occur?
Skin penetration and skin absorption.
What does wet washing mean?
The bottom washing starts whilst there is still a small amount of cargo in the tank.
Dry top washing and wet bottom washing.
The oil is too “wet” to use for crude oil washing.
Start the wet crude on washing on a dry bottom.
A vessel’s forward draught reading is 8,50 m a correction factor of 0,0242 m; draught marks are painted abaft the forward perpendicular. What is the corrected forward draught if the vessel is trimmed by the stern?
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.
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.
The abbreviation “NPSH” is often seen in connection with the efficiency of cargo pumps on oil tankers. What does this abbreviation stand for?
Nominal Pressure Suction Head.
Natural Pumping Standard Height.
Necessary Pumping Suction Hazard.
Net Pressure Suction Head.
On some trades fruit cargoes may be subjected to “in-transit cold treatment” also known as cold treatment. From the options given which is the main purpose of this cold treatment?
To maintain a specified minimum temperature for a prescribed time period to kill off any fruit fly which may be present when loading the cargo.
To maintain the temperature of the fruit within very tight tolerances.
To ensure that the fruit is carried as cold as possible without damaging the fruit.
To achieve uniform quality of the fruit at discharge.
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.
The following DSC was received (at what time received?) 27.05.1997 23:23 CALLED VHF CH70 FORMAT: DISTRESS DIST-ID: 367449000 N OF: UNDESG DISTRESS POSITION: N 52,43 E04.maj DIST-UTC: 00:00 TELECOM: G3E SIMP TEL EOS: EOS.
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 turned safely.
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.
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.
Which of the given options characterizes a 2-stroke diesel engine?
The piston always has a short skirt.
A 2-stroke engine always has 2 or more turbochargers.
A 2-stroke engine has an air inlet valve in the cylinder cover.
A 2-stroke engine completes a full cycle every revolution.
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.
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.
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.
You are on a vessel 10 nautical miles off the coast of Nigeria, West Africa. Are you allowed to dump empty glass bottles overboard?
Yes, glass bottles can be dumped overboard.
Yes, the bottles can be dumped if they are ground so that the resulting particles can pass through a screen with 50 mm openings.
Yes, the bottles can be dumped if they are ground so that the resulting particles can pass through a screen with 25 mm openings.
No, glass bottles can not be dumped overboard.
During mooring operations which is the safe place to be in?
Outside the colored zone.
Behind the “point of restraint” but inside the zone.
Between the “point of break” and the “point of restraint”.
Where ever you feel safe.
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.
According to SOLAS Regulation all dedicated seawater ballast tanks on oil tankers shall have an efficient corrosion prevention system such as hard protective coatings or equivalent. With regard to coatings do SOLAS set any requirement to colour?
Preferably light red colour.
Give the meaning of the following symbol:
Rescue boat with waterproof canopy.
How can the error of the Gyro compass be determined?
By comparing the course readout on the GPS with the gyro course steered.
By using any of the methods in the suggested answers.
By taking the radar bearing of an object when the radar is on a compass stabilised mode and comparing it with the bearing on the chart of the same object.
By taking a transit bearing with the gyro compass of two prominent fixed shore objects and comparing it with the bearing of the same objects on the chart.
What colour flare is used to signal a highly dangerous landing place?
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 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.
You have just joined a chemical tanker. Where would you find a description of the ship’s cargo handling equipment, details on the ship’s cargo unloading procedures and tank stripping and details on procedures relating to the cleaning of cargo tanks, the discharge of residues, ballasting and deballasting?
The Annex II Procedures and Arrangements Manual.
The applicable equipment manufacturer’s maintenance and operation manuals.
The Cargo Handling Logbook.
Which type of compressors is used as cargo compressors onboard gas carriers?
Oil free piston compressors.
Three stage piston compressors.
Piston, screw and centrifugal type compressors.
Three stage screw compressors.
A section of seawater pipe has been removed for maintenance. When refitting the pipe after completing the work the bolt holes in the flanges are found to be misaligned. What procedure should be followed to finish the work?
Force the pipe into position and them hammer the bolts into the holes to hold the pipe flanges into alignment.
Adjacent pipework should be slackened off to allow the pipe to be aligned. Any incorrectly positioned brackets should be adjusted after the pipe is refitted.
Use wooden wedges to force and hold the pipe into the correct position and then fit the bolts.
Use a chain block to pull the pipe flanges into alignment and leave it in place after the bolts are fitted to avoid overstressing the bolts.
Which of the following items shall be included in an “abandon ship”-drill?
Checking that passengers and crew are suitably dressed and lifejackets correctly donned.
Checking that all crew and passenger are present.
Checking the distress signal rockets and other distress signals.
Checking the lifeboat provisions and supplies.
In the type of fluorescent lamp system shown in the illustration, the role of the starter is to perform which of the following?
To change the ballast to a high inductive current and then divert this current through the lamp.
To create a high starting current.
To pass current through the lamp heaters and then interrupt the inductive striking current.
To switch on current through the lamp and to disconnect the ballast once the lamp has started.
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.
In which provision of the Act is the responsibility of the master for the observation of the provisions relating to supervision of maritime service stated?
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 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.
The picture shows a common used 3,5 inches diskette type for storing data. What is the data storing capacity for such diskette?
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.
Falls used in launching shall be turned end for end at an interval of not more than X months and to be renewed not later than every Y years, where the intervals are:
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.
What are we seeing here?
A sailing vessel less than 20 metres in length, displaying the optional combined lantern in lieu of standard sailing lights, seen head on.
A sailing vessel, seen from astern, where the edges of her sidelights are both visible.
A sailing vessel of less than 10 metres in length, displaying the mandatory combined lantern in lieu of sailing lights, seen head-on.
A sailing vessel, at anchor.
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.
A coated tank holds 400 tons of sea water when filled. How many tons of liquid of liter weight 0,9300 will it hold when filled to 90 % capacity?
What is the purpose of the unscheduled inspectors on board ships?
To determine whether the ship is seaworthy.
To issue a certificate of seaworthiness.
To issue a trading permit.
Mainly to determine whether the manning regulations have been adhered to.
The frequency 121,5 MHz is used for:
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?
Indicate the correct name for the tool:
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.
If the heat transfer capacity in a heat exchanger is dropping, the following action should be taken:
Clean the heat transfer surface.
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.
What do you understand by the term “Terminal Representative”?
A bulk cargo terminal agent.
A cargo facility terminal agent.
A person appointed by a cargo terminal for operations conducted by that terminal with regard to a ship.
A person appointed by a cargo terminal for matters related to crew welfare under the International Labour Convention.
Which one of the following items has to be included in an abandon ship drill?
Lowering of at least one lifeboat after any necessary preparation for launching.
Manoeuvring the lifeboat in the water.
Launching and recovery of a survival craft.
Starting and operating radio life-saving appliances.
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.
What is the normal thickness of the primary barrier (membrane) on membrane containment type systems as used in LNG carriers?
What is a good practice when lineblowing/pigging from shore?
There must always be one man on the ship’s office, operating the manifold valve in order to avoid to much pressure raise in the tank.
Just leave all valves open and let the shore control the blowing.
There must always be one man on the ship’s manifold, operating the manifold valve in order to avoid to much pressure raise in the tank.
There must always be one man on the ship’s bridge, operating the helm in order to avoid to much pressure raise in the tank.
Which electronic component does this graphical symbol represent?
Silicon controlled rectifier.
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.
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.
What is the colour of the smoke signal used by life-saving stations or rescue units indicating that distress signals are observed in daylight?
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.
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 below statements characterizes the most significant differences between a water-tube boiler and a fire-tube boiler during operation?
Water-tube boilers are more efficient and contains less water. They suffer from major damages when run dry during operation.
The firetube boiler does not need any non-return valves in the feedwater line circuit.
The watertube boiler can tolerate a short period of time without any water, when the oilburner is still in action.
The firetube boiler has a much better capability to work at higher steam pressure.
Which one of the listed requirements for passenger ships regarding personal life-saving appliances do not correspond to present regulations?
All lifejackets shall be fitted with a whistle, a light and a smoke signal.
Ro-ro passenger ships shall carry at least 2 lifebuoys provided with self-igniting lights an self-activating smoke signals.
All lifejackets shall be fitted with reflex, a whistle and a light.
The 5 % extra lifejackets carried on board have to be stowed in conspicuous places on deck or at the muster stations.
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.