Maison Tests en ligne CES Dry cargo Deck Support Test online CES 5.1 for Deck department, Support level, Dry cargo vessel

Tests en ligne : Test online CES 5.1 for Deck department, Support level, Dry cargo vessel

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Le test consiste en des questions aléatoires sur un sujet sélectionné.

Question 1 depuis 90

The category of a DSC-call determines is:

how the rest of the call is to be composed

Don't know

the degree of priority

for whom the message is destined

A DSC ‘distress alert’ message received contains the information: “GROUNDING”.This means that :

Don't know

For a good connection aerial transmitting has to be earthed

A vessel is aground

For a good connection transmitting receiving has to be earthed

The “sensitivity” button adjusts:

AF-Gain

RF-Gain

tuning

Don't know

A polarisation of a radio wave is determined by:

Length of the aerial

Condition of the aerial

Height of the aerial

Position of the aerial

In radio-traffic with a coast-station, a “personal call” means that one wishes:

to have a telephone conversation with a person whose name is known

to request a telephone alert call

Don't know

to have a telephone conversation for account of a requested shore subscriber

A vessel berths at two different jetties under the influence of a 1 knot beam current. At the first jetty the ship has an underkeel clearance of 5 times the draught and at the second the underkeel clearance is only 0.5 times the draught. If the current exerted a force of 50 tonnes on the ship at the first jetty, what would be the approximate force exerted at the second if the draught is the same?

75 tonnes

Unchanged, remains at 50 tonnes

25 tonnes

150 tonnes

Which type of vessel suffers from the greatest squat effects?

Vessel with a large length to beam ratio

Vessel with a high Block Coefficient

Vessel with a low Block Coefficient

Vessel with a small length to beam ratio.

How should the spare oxygen and acetylene gas welding bottles be stored onboard the ship?

In a refrigerated room.

In two separate rooms outside the engine room space.

In the workshop in the engine room as close as possible to welding equipment.

In the steering flat.

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?

The IGC code.

The cargo manifest.

Material safety data sheet.

A Mollier chart.

The abbreviation "NPSH" is often seen in connection with the efficiency of cargo pumps on oil tankers. What does this abbreviation stand for?

Necessary Pumping Suction Hazard.

Natural Pumping Standard Height.

Nominal Pressure Suction Head.

Net Pressure Suction Head.

You are in open water and clear conditions. You are approaching the pilot station when you hear this signal from a vessel ahead of you. What does it signify?

That the vessel is starting his engine and resuming his passage.

That the vessel is operating astern propulsion.

That the vessel is picking up his pilot.

That the vessel is altering his course to starboard.

What is the MARPOL definition of a "high-viscosity substance"?

A noxious liquid substance in category "Y" with a viscosity equal to or greater than 100 mPa.s at 37.8 degrees Celsius.

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 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 mPa.s at the unloading temperature.

How often should normal testing of the cooling water be done?

Once a month.

Every 2.nd week.

Every day.

Once a week.

The typical current gain of a common emitter transistor is

10-200

500-5000

1-1000

1-10

What action should be taken if the inert gas plant fails during discharge of a liquefied gas cargo?

Slow down the discharge rate until the IG plant is working again.

Open the atmospheric vents to prevent a vacuum in the cargo tanks.

Stop all cargo operations and inform the terminal.

Open the vapour return line from shore to prevent a vacuum in the cargo tanks.

What is the purpose of the deck water seal on the deck of an oil tanker?

To prevent the passage of petroleum gases back to the machinery spaces.

To automatically compensate for temporary fluctuations in inert gas pressure within the cargo spaces.

To provide a second washing cycle to inert gas.

To automatically adjust the inert gas flow.

In oil tanker operations, what is understood by the term "Load On Top"?

Loading part of an oil cargo in one port, then loading the same type of cargo "on top" in a subsequent port.

Loading a new compatible cargo "on top" of the oil and water residues from a previous cargo in the sloptanks

Loading an oil cargo into the tanks tanks through hoses inserted through the tank hatches and lashed in position

Loading part of an oil cargo in one port, then loading a different type of cargo "on top" in the next loadport

What should be observed concerning a ship's water tight integrity?

That all water tight ramps and doors are locked and secured at sea

The ramp is in stowed position

The aft door locked

That all emergency exit doors are locked and secured

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.

What is the purpose of the decanting line between two slop tanks on an oil tanker that is using water for the washing of the cargo tanks?

To enable the filling of the secondary slop tank via the primary slop tank.

To enable most of the recovered oil to be retained in the primary slop tank, while the cleaner part of the water will flow into the secondary slop tank, where it can be re-used as wash-water.

To enable both the primary and secondary slop tank to be filled without using the main cargo lines.

To avoid a build-up of static electricity during water washing, caused by air being drawn in as the primary slop tank empties.

On a Container vessel, what is the function of a lashing plate?

As tie down point for turnbuckles on deck or hatch cover

A means of securing buttresses under-deck

A means of securing the hatch covers

A means of securing lashing chains

According to the IMO Gas Codes, what is the minimum number of "Firemen’s outfits" required to be carried on an LNG carrier with a cargo capacity above 5,000 m3?

5 sets

3 sets

4 sets

2 sets

What would a cracked cross-deck plating found during a loaded passage on a bulk carrier indicate?

That bulkhead failure is imminent

That the vessel is due for survey

That shear forces have been exceeded

That failure of the shell plating is imminent

What name is given to the oriental pan which has a small round base and wide sloping sides, commonly used for cooking "stir-fry" dishes?

Gok.

Wok.

China pan.

Wack.

Most search patterns consists of:

Vertical tracks

Parallel track covering a rectangular area

Horizontal tracks

Vertical and horizontal tracks

What do you understand by the term "Let Go" when applied to mooring and unmooring?

Let Go means to let seafarers go ashore

Let Go means to slacken a mooring rope

Let Go means to leave the ship

Let Go means to cast off the mooring ropes and wires

A routine inspection of a hold space on a liquefied gas carrier is necessary. Checks of the atmosphere indicate that there is only 19.5% oxygen content. Which of the following actions is recommended?

Postpone the inspection and continue ventilating until an oxygen reading of 21% is achieved.

Carry on with the inspection as normal since 19.5% oxygen content is sufficient for breathing.

Ensure all persons entering the space for the inspection wear self contained breathing apparatus.

Ensure the inspection is carried out quickly in case the oxygen content reduces any further.

On a container vessel select from the list the direction of wave encounter which is most likely to cause a parametric roll.

Head seas

On the beam.

Broad on the bow, just forward of the beam.

bow or stern quartering

The lights here show those that must be exhibited by a vessel engaged in towing, as per rule 24 of the International Collision Regulations. But how long is the tow behind this vessel?

It is more than 50 metres but less than 200 metres.

It is less than 200 metres.

At least 100 metres.

It exceeds 200 metres.

What measures should be taken in order to avoid flammable gases forming on top of coal cargoes on a Bulk Carrier?

Ventilation to be continuous?

Ventilation to be carried out as indicated in the IMO solid Bulk Cargo Code

Cargo to be ventilated by opening hatch covers at sea?

Cargo not to be ventilated?

On a Container vessel, when will a full container experience a force of 100% of its weight?

When the ship is heaving

When the ship is rolling and pitching

When the ship is rolling

When the ship is pitching

A cargo hatch cover seal on a Bulk Carrier is known to be damaged and not weather tight prior to sailing; what is the legal significance of this situation?

The vessel may have its classification affected

The vessel is still seaworthy but repairs must be carried out at next port

The vessel may well be judged to be un-seaworthy; this could invalidate some certification and hull and machinery insurance

There are no legal concerns over this

It has been shown that the controlled release of oil is effective in reducing the effects of the sea, making it possible for a rescue craft to approach survivors in the water. How many square metres does the IAMSAR Manual suggest may be calmed by releasing 200 litres of lubricating oil slowly through a rubber hose with the outlet maintained just above the surface while the ship proceeds at slow speed?

Approx 50,000 square metres.

Approx 50 square metres.

Approx 5,000 square metres.

Approx 500 square metres.

Why is it important to issue “Note of Protest”?

To protect the interest of owners

To protect both owners and charterers

To protect the interest of the crew

To protect the charterers

What type of heat exchanger is shown?

Evaporative

Bundle and stack

Plate

Shell and tube

On the figure 4 possible definitions of the term "BOW/STEM" are given. Which one is the correct one?

Bow/stem is given by B on the figure

Bow/stem is given by A on the figure

Bow/stem is given by D on the figure

Bow/stem is given by C on the figure

By what name are the regulations which control the discharge of noxious substances and prevent pollution from ships known?

SOLAS

The International Marine Pollution Prevention Laws

ISGOTT

MARPOL

Select the option which correctly completes the following statement. 'Prior to allowing work to proceed in an onboard space testing of the atmosphere should be carried out…

…for any space with limited access or non-continuous ventilation or is suspected of having a hazardous atmosphere.

…only if the space has been used to carry any cargo or contains any cargo related equipment.

..only if the space has contained liquid oil at some point.

…only if the space has a watertight door or watertight access opening.

For what can a vessel be held responsible by a port authority?

The gangway resting on a damaged jetty

Damage to cargo during loading

Painting overside

Soot emissions

When general cargo is damaged during heavy weather on a General Cargo vessel, which of the following persons should attend on board at the next port?

Surveyor representing the consignee

Class surveyor

Surveyor representing the vessel's hull & machinery underwriters

Surveyor representing the vessel's P. & I. Club

What is ‘Standardized Cargo’?

Palletised cargo

Cargo for which the ship is provided with an approved securing system

Cargo that is shipped in standard dimensions

Breakbulk cargo

What is the first line of defence against ingress of water into a bulk carrier?

Pipe outlets

The shell plating

Machinery spaces

Hatch covers

What is the purpose of cooling down the cargo tanks before loading an LNG carrier?

To detect any serious loss of efficiency in the insulation which will show as frost on the mild steel inner hull.

To detect if liquid has gone from the bottom of tanks.

To control vaporisers and heaters so that temp of LNG vapour is higher than existing tank atmosphere temperature.

To avoid excessive boil off during and prevent thermal shock to the primary containment system.

The main engine is running steady. What is the normal shut down pressure for "Lub.oil inlet to main bearings"?

0,5 Bar

0,2 Bar

2,0 Bar

1,0 Bar

On a Container vessel, what is the function of a buttress?

To support the lowest tier of containers in a non-cellular cargo hold

When used at the base of container stacks its prevents the tank top plating from being pierced

To support container stacks in a non-cellular cargo hold

To support the lowest tier of containers in a con-bulker's cargo hold

What will you do when all the fresh water in the survival craft is finished or about to finish?

Use sea water to keep your body wet

Start collecting rain water

Drink Sea water

Drink only 1 liter of sea water per day

What must be ensured when using ship’s cargo gear in hot climates?

That all cargo gear is appropriately marked

That grease from wire falls does not fall onto cargoes being loaded or discharged

That the cargo gear register in up to date

That stevedores handle cargo gear in the proper manner

In a fresh water tank we are using a pressure transmitter with a range of 0-0.5 bar / 4-20mA for level measurement. The transmitter is for different reasons installed 30 centimeters from the bottom of the tank, and the tank is 5 meters high. What will the output from the transmitter be when the tank is full? (Pending no calibration is made)

30 mA

19.04 mA

20 mA

21.2 mA

To evaluate the condition of a heat exchanger the following measurements should be recorded:

In and outlet temperatures on one media

In and outlet temperatures, and flow rates for both media

In and outlet temperatures for both media

Pressure drop

What should be done if a vessel is trimmed outside the limits of its trim correction tables during a draught survey?

Bring the vessel to within the trim limits imposed by the tank sounding tables prior to carrying out the survey

Ask the attending surveyors to extrapolate the tables for the excessive trim

Bring the vessel to within the trim limits imposed by the tank sounding tables prior to taking tank soundings

Consult the classification society concerned

What is the purpose of an observation tank in a boiler feed system?

To check condensate returns for oil.

For adding chemicals into the boiler water.

To monitor chloride level.

To monitor the water colour.

How is a dangerous substance listed in the IMDG Dangerous Goods List?

By its Proper Shipping Name (PSN) and subsidiary name

By its Trade Name

By its Proper Shipping Name (PSN)

By its abbreviated Trade Name

A 2 term controller is used to control the fuel oil temperature for a thermal oil system used for heating services. The control is very unstable with the measured value hunting constantly. Select the most probable cause of this problem from the options given.

Integral action reset time is set too slow.

Proportional band width is set too wide.

Proportional band width is set too narrow.

Integral action reset time is set too fast.

Some specialised vessels, mainly those involved in the carriage of fish, are capable of carriage temperatures as low as minus 60 degree Celsius. From the options given select the one that best describes why such low temperatures are used.

At minus 62 degrees Celsius the eutectic point is reached and all water in the cells is frozen.

Longer transport times are possible and hence less powerful vessels are required.

Higher charter rates can be achieved.

Quick temperature reduction is possible.

On a RoRo vessel, why is it necessary to maintain safety markings/luminous paint on pillars in ro-ro decks?

To comply with the company's standing instructions

Because it is a port state control requirement

To comply with the ship's Planned Maintenance Schedule

To prevent damage during cargo operations

A vessel is carrying a refrigerated cargo under controlled atmosphere (CA). From the options given, select the most appropriate degree of opening of the air change vents when operating CA.

50%

25%

100%

How many lifejackets are required in a passenger cabin?

Twice the number of beds in the cabin

At least 2

None, they will be handed out at the muster station

Same number as beds in the cabin

During tank washing operations on an oil tanker, it is a requirement that the atmosphere within the tank is maintained with an oxygen content of not more than 8% by volume, but which of the following conditions is also a requirement?

That a positive pressure is maintained

That the atmosphere within the tank is maintained at atmospheric pressure, ie open to atmosphere

That a minimum of 2.4 bar inert gas inlet pressure is maintained

That a negative pressure is maintained

What is the required capacity of the inert gas plant?

At a rate of at least 125% of the maximum rate of discharge capacity.

At a rate of at least 150% of the maximum rate of discharge capacity.

At a rate of at least 135% of the maximum rate of discharge capacity.

Sufficient to avoid negative pressure in cargo tanks.

xxz

The Ziegler-Nichols method is used in control engineering when setting up the system. Which of the system components given in the options would this method be applied to during initial set up?

Sensing unit to set the range.

Valve positioner to optimise speed of operation.

PID controller for tuning.

Valve and actuator to set the span of travel.

What should be done when flammable vapours are detected in a cargo hold?

Stop the hold ventilation and close all ventilator covers

Stop the hold ventilation

Run the hold ventilation in ‘supply’ mode

Run the hold ventilation in ‘exhaust’ mode

The thermal conductance capability is expressed by a material's thermal conductance number and states the heat quantity. What is the denomination for heat quantity?

Enthalpy.

Joule.

Calorific value.

Watts.

So as to avoid possible cargo claims at the discharge port what should be maintained besides the cargo lashings?

The vessel itself

Hatch covers, hatchways and cargo hold ventilators

Cargo gear

The cargo

What are Primary fenders, with regard to ship-to-ship transfer operations?

Primary fenders are large fenders meant to float between vessels and absorb considerable impact

Primary fenders are tyre-type fenders kept on deck for emergency use

Primary fenders are small fenders suspended between the ships' bows or stern to protect from inadvertent angular contact

Primary fenders are fixed to the bow of an attending tug (if any)

Which of the following has the highest diffusion resistance?

Stationary air.

Glass:

Mineral wool.

Freon 22.

What is the BC Code?

The Code of Safe Practice for Bulk Carriers

The Bulk Carrier Code

The Break-bulk Cargo Code

The Code of Safe Practice for Solid Bulk Cargoes

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

How does the maximum oil film pressure in a white metal journal bearing operating under full fluid film conditions compare with the pressure of the lubricating oil supply system?

The pressure is greater than the pressure in the lubricating system and varies with the journal load.

The pressure is the same as the pressure in the lubricating system regardless of the journal load.

The pressure is less than the pressure in the lubricating system and varies with the journal load.

The pressure is greater than the pressure in the lubrication and is constant regardless of the journal load..

What is the minimum MARVS on a fully pressurised liquefied gas carrier?

Not be less than 7 bar.

Not less than the gauge vapour pressure of the cargo at 45 degrees C.

Not less than the gauge vapour pressure of the cargo at 0 degrees C

Not less than 0.7 bar.

Liquefied gas cargoes will expand as the temperature increases and therefore tanks are not allowed to be filled to 100%. What is the maximum allowable filling limit for the cargo tanks on liquefied gas carriers?

Maximum allowable filling limit on cargo tanks is 98% on gas carriers.

Maximum allowable filling limit on cargo tanks is 95% on gas carriers.

Maximum allowable filling limit on cargo tanks is 90% on gas carriers.

Maximum allowable filling limit on cargo tanks is 92% on gas carriers.

During the normal operating cycle of a diesel engine there are side thrusts generated by the piston as it moves up and down the cylinder due to the changing angle of the connecting rod. How are these side thrusts accommodated in a trunk piston engine?

The side thrust is transmitted to the cylinder liner and the engine frame by the piston crown.

The side thrust is transmitted to the cylinder liner and the engine frame by the piston rings.

The side thrust is transmitted to the engine frame by the crosshead bearing.

The side thrust is transmitted to the cylinder liner and the engine frame by the piston skirt in way of the gudgeon pin.

What ingredient, made from durum wheat, is commonly used as an alternative to rice with north-African dishes?

Bulgar wheat.

Couscous.

Soya.

Semolina.

Which is the preferred state to have the main turbine in while shutdown for a short stay in port?

Left with autospin operating to give periodic turning.

Gland steam left on to keep the rotor and casing warm and with turning gear switched off but engaged to 'lock' the rotor in position.

Turning with the turning gear and gland steam on.

All steam shut off with turning gear switched off but engaged to 'lock' the rotor in position.

What is the benefit of prismatic Type "B" tanks?

The tanks do not form part of the ship's hull structure.

The ship's hull may act as the secondary barrier.

The tanks are completely self-supporting.

The benefit of maximising ship hull volumetric efficiency.

What kind of cargo pumps is most common on LNG carriers?

Deepwell pumps.

Single stage deepwell pumps.

Submerges motor pumps.

Multistage deepwell pumps.

When is the parallel sweep search used?

When searching large area

When searching during night

When searching in rough weather

When searching over small area

What is the minimum length of rubber insert when replacing a damaged section of the hatch cover seal?

250 mm

200 mm

275 mm

500 mm

You will be at sea for 45 days with a crew of 30 men. How many tomatoes would you buy?

35 kg

60 kg

50 kg

70 kg

The engines have failed and will require at least 24 hours to be available as a reliable means of propulsion. Your vessel is about 20 miles off the coast in a tidal area. What are the initial steps that should be taken to ensure the safety of the ship?

Display NUC lights and determine if anchoring is possible

Display NUC lights and inform the nearest Coast Guard of you predicament.

Display NUC lights and send out a navigational warning to all other vessels of your position and situation

Display NUC lights and investigate the tidal flow over the next 24 hours and the probable drift of the vessel.

What is one of the main features of the cylinder lubricating oil used in large 2 stroke marine diesel engines which normally operate on heavy fuel oil?

It is a pure mineral oil without any special additives.

It is strongly alkaline.

It is strongly acidic.

It is neutral with a pH value of 7.

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 the normal slow down/shutdown temperature for the jacket cooling water outlet from a diesel engine cylinder?

105 - 108° C

75 - 78° C

85 - 88° C

95 - 98° C

When must lifting plant on a General Cargo vessel be proof load tested?

Only after initial installation of equipment

When equipment is new, every five years and after repairs or major modifications

Only after repairs

Every four years and after repairs and modifications

What will occur within the cargo tank if Crude Oil Washing is undertaken with oil containing a substantial amount of water?

It will be impossible to separate the oil and water at a later stage

Ther will be inadequate drainage due to emulsification

An electrically charged mist may be generated

It will assist in the cleaning of the tank

What is the requirement with respect to pressure/vacuum valves on cargo tanks?

Three valves.

There is no such requirement.

Two valves.

One valve.

On the figure 4 possible definitions of the term "DEPTH TO MAIN DECK" are given. Which one is the correct one?

Depth is given by A on the figure

Depth is given by B on the figure

Depth is given by C on the figure

Depth is given by D on the figure

What is a steering wheel?

A wheel with which the ship is steered.

A compass for steering.

A drum for heaving of ropes.

A wheel for steering lines.

How much food per person is supplied in a lifeboat?

Not less than 20000 kJ

None - only barley sugar sweets supplied

Not less than 10000 kJ

Not less than 5000 kJ

After checked for open airway, given the first two inflations and checked the pulse to make sure that the heart is beating, what is the rate of inflations given until natural breathing is restored ?

10 - 12 times per minute

25 - 27 times per minute

Doesn't matter how many times

12 - 16 times per minute

Ce test en ligne se compose de 90 questions aléatoires issues des tests CES 5.1 sur un sujet de votre choix.