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Question 1 depuis 90

*Under which circumstances should a sprinkler head of a common fixed sprinkler fire-extinguishing system be activated?

Automatically, when the temperature is within a range from 68°C to 79 °C

When the temperature is within a range from 68°C to 79°C, but after the corresponding alarm is acknowledged and assessed at the control panel

When the smoke density exceeds 12,5% obscuration per meter, but after the corresponding alarm is acknowledged and assessed at the control panel

Automatically, when the smoke density exceeds 12,5% obscuration per meter

*What is (are) the basic component(s) of a Fire detection system?

the detector heads

The control unit

The power supply

All the alternatives mentioned

Where is the International Shorecoupling to be stored?

In the engine room

Together with the cargohoses

Easy accessible by the gangway

In the accommodation

What is the minimum number of fireman's outfits that should be carried on a cargo ship?

What is the minimum number of portable fire extinguishers that must be carried on ships of 1000 GRT and above?

*Generally the fixed sprinkler fire extinguishing system will be:

Dry pipe system

Gas system

High pressure water system

Wet pipe system

If you are alone and you see smoke coming from a closed cabin door. What should you do first?

As most people are sleeping, call a friend and ask him to assist in putting out the fire

Get the nearest fire extinguisher and then open the door to see what the situation is

Take a look inside the cabin to see what the situation is

Activate the nearest fire alarm button and advise bridge of the location of the fire

The display of a radiotelephone-installation shows the following selections: Transmitting mode: H3E Transmitting frequency: 2187,5 kHz The transmitting mode indicator is “flashing”. This can mean that:

You are ready to press the send buuton

The radiotelephone-alarm signal must be transmitted now

The transmitting mode is not compatible with the chosen frequency

The “H3E”mode is to be selected before transmitting on the 2187,5 kHz band

A Category "B" Chemical Cargo which has a melting point of more than 15° C. can be carried:

In tanks adjacent to the ship's shell plating having heating coils?

In tanks where the heating coils have been removed and supply and return steam pipes blanked off?

In tanks not adjacent to the ship's shell plating having heating coils?

In any tank onboard the vessel?

What does the abbreviation ABC mean in first aid?

Air, Breathing, Circulation.

Abandon, Balance, Circulation.

Air, Breath, Concentration.

Air, Burning, Critic.

One of the following areas is NOT a Special Area as mentioned in MARPOL regulations regarding pollution by oil. Which is that area?

The Red Sea and The Gulf of Aden

The Gulf of Mexico

The Baltic Sea

The Mediterranean Sea

You are duty officer on board a vessel in open sea. The look out is doing work and you are alone on the bridge, presently checking the position in the chartroom. Suddenly you are colliding with a fishing vessel. You will be most to blame for the collision, because of:

You should ask over VHF if there is any vessels in the surronding waters before going to the chart room.

You shall always give the "keep away" signal when doing chart work.

The fishing vessel should have kept away and you will not be blamed.

You did not maintain a proper look - out by all available means.

Your ship's initial speed is half ahead and your engine is put full astern. How will the stopping distance be compared to full speed?

It will be much shorter

It will be the same as full speed

It will be much longer

It will differ only slightly

The ship has a right-handed propeller and is swinging to starboard when the engines are slow ahead and the rudder is to starboard. The engines are stopped and the rate of swing rapidly slows down. How could the swing to starboard be maintained without the ship making much headway.

Astern on the engines will allow Transverse Thrust to continue the swing

By applying the rudder hard over to starboard and going ahead on the engines.

The only effective method is by using the bow thruster to push the bow to starboard.

Transverse Thrust will reduce the swing and therefore a kick ahead is necessary with full starboard helm applied.

Your vessel is moving in Panama Canal waters. When must a crew man capable of and ready to operate the anchors be on the forecastle?

When passing through the Gatun Lake

When passing through Gaillard cut

When anchoring in Gatun Lake only

When a Panama Canal pilot is onboard

When handing over the con of a vessel to a pilot, should the Master insist in discussing the passage plan with the pilot while he is there to use his local knowledge and advice on the navigation of the ship?

The passage is well established and known by the pilot and a plan is therefore not necessary

The pilot would probably consider it unnecessary, be more interested in knowing the ship's characteristics and resist any passage planning discussions with the Master.

A pilot is responsible for the navigation whilst on board and will be very familiar with what is required, therefore discussing the passage plan is not necessary

A passage plan should be discussed between the Master and pilot, when under pilotage in the same way as discussed with the bridge team when deep sea

Should recommended route information be used in conjunction with weather routing?

Sometimes

Yes

Only if recommended by weather routing

Give the meaning of the following symbol:

child-s lifejacket

muster station for unaccompanied minors (UM)

lifejacket

immersion suit

*Which among the following list is particularly required for a totally enclosed lifeboat ?

windows on both sides can be closed watertight and opened for ventilation

handrails inside for persons moving to their seats

hatches positioned so as to allow launching and recovery operations to be performed without any occupant having to leave the enclosure

self-bailing arrangements

Which item among those below is included in the normal equipment of every lifeboat ?

sea-charts and navigating equipment

one life-jacket for each person

an EPIRB

a buoyant bailer and two buckets

Which one of the listed requirements regarding inflatable liferafts do not correspond to present regulations? The inflatable liferaft shall:

maintain its form after inflation with full complement

have at least two entrances

be prevented from pressure exceeding twice the working pressure, either by relief valves or by limited gas supply

have a floor capable of being sufficiently insulated against cold by means of inflated compartments, or by equally efficient means not dependant on inflation

What will you bring in a lifeboat if the ship is abondoned?

As much biscuit and canned food as possible.

Warm clothes, blankets and lifevests.

All pets that will most likely not be able to enter the boat by themselves.

All valuables like money, jewelry etc.

What is the meaning of this symbol ?

Lifeboat

Liferaft

Davit-launched liferaft

Rescue boat

When discussing the properties of an oil cargo, what is the "wax content"?

The percentage of wax, expressed as a percentage, remaining in an oil product after distillation.

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 amount of additive in an oil product, expressed in ppm, designed to inhibit solidification at lower temperatures.

The percentage of paraffinic wax by volume, based on a representative sample of the crude oil.

On a bulk carrier which is to load sugar, which of the following situations would result in the cargo holds failing inspection?

Hardened rust spots on the lower bulkhead stool and hopper tank plating

Rust-stained tank top plating

Traces of insect infestation in the bilges

Hardened rust spots on shell plating

What is the most likely reason for vibration and noise at the suction side of a centrifugal pump when it is running?

Pump suction valve fully open.

Water hammer in the pump casing.

Fluid friction in the suction line.

Collapsing vapour bubbles due to cavitation.

You are the Officer on Watch on an oil tanker during a discharging operation. An alarm on the Inert Gas Plant indicates that no inert gas is being supplied to replace the discharging cargo. What will you do?

Continue discharging with the cargo pumps running at minimum speed.

Slow down and relieve the vacuum by opening the tanks lids.

Immediately stop the discharging.

Activate the inert fans and blow fresh air into the cargo tanks.

What is the requirement regarding number of slop tanks on oil tankers of 70,000 tons and above delivered after 31 December 1979?

Shall be provided with at least 2 slop tanks.

Shall be provided with slop tank.

No requirement regarding number of slop tanks.

Shall be provided with sufficient number of slop tanks.

What would indicate that the cargo holds are not properly sealed?

When dew point temperatures inside cargo holds are the same as when the cargoes were loaded

When dew point temperatures inside cargo holds remain the same despite cargo hold ventilation

When dew point temperatures inside and outside the cargo holds are closely matched

When dew point temperatures inside and outside the cargo holds are substantially different

Which of the following statements is correct?

The first row of steel coils can be loaded directly onto the tank top

The first row of steel coils need not be supported by wooden wedges

The first row of steel coils must be loaded on dunnage laid athwartships

The first row of steel coils must be loaded on dunnage laid fore and aft

What would be a typical oil feed temperature for purifying heavy fuel oil in a centrifuge in order to ensure good separation?

105 - 108 Celsius.

95 - 98 Celsius.

85 - 88 Celsius

75 - 78 Celsius.

What could result from carrying coal with a high sulphur content on a Bulk Carrier?

Evolution of methane gases

Spontaneous combustion

A possible shift of cargo

Corrosion of steelwork in the cargo holds if the cargo becomes wet

What does the IMSBC Code emphasise with reference to the exposure of personal to the dust created when carrying some bulk cargoes?

The code does not make any reference to this hazard

A high standard of personal hygiene

The responsibility of the Master to ensure that staff are wearing the correct clothing

The restricted loading of certain cargoes which may be excessively dusty

On a RoRo vessel, which of the following is not required in the pre-stowage plan?

Checking communications equipment

Assigning crew duties

The operation of gas-tight and watertight doors

Stowage and securing of specialised cargoes

Under what regulations would steel bands remaining in the cargo holds have to be discharged?

MARPOL 73/78 (Annex IV - Regulations for the prevention of pollution by sewage from ships)

Port state regulations applicable at the port of destination

MARPOL 73/78 (Annex V – Regulations for the prevention of pollution by garbage from ships)

Flag state regulations

Ballast introduced into a cargo tank on a chemical tanker which has been washed to such an extent that the ballast contains less than 1 ppm of the substance previously carried may be discharged into the sea without regard to the discharge rate, ship's speed and discharge outlet location, but under certain conditions. What are those conditions?

That the vessel is not less than 50 miles from the nearest land and is proceeding on route.

Provided the ship is underway and a sample of the ballast water has been drawn from the tank and is stored on board, there are no additional conditions to be imposed on such a discharge.

That the discharge is passed through the Oil Discharge Monitoring Equipment and a visual watch is maintained on the vessel's wake.

That the vessel is not less than 12 miles from the nearest land and is in water that is not less than 25 metres deep.

What is the correct definition of "gangway"?

Portable bridge between ship and shore.

A way to handle gangs.

A gangway to the waterline.

The way between two gangs.

Pasta is often referred to as "al dente". What does this mean?

Coated with oil before boiling.

Part cooked.

Tender, but slightly firm to the bite.

Served separately from other ingredients.

What is important to prepare prior to a helicopter operation?

To stop the vessel completely

Make sure all loose deck equipment at helicopter deck is stowed away and secured.

To increase the speed of the vessel

To light up the area for pick-up

A deck patrol notices that a cargo space carrying refrigerated cargo under controlled atmosphere (CA) is not padlocked shut. Select, from the options given, the main reason why such a space should be kept locked.

It is a requirement of the ship security plan that such spaces should be locked.

To prevent unauthorised entry into the space because of the hazard risk due to low temperature in the space.

To prevent unauthorised entry into the space because of the hazard risk due to the low oxygen content of the controlled atmosphere in the space.

To minimise the occurrence of pilferage of a valuable cargo.

Why should only dry powder known to be “foam compatible” be used in conjunction with foam to extinguish gas fires?

Because certain types of dry powder has a negligible cooling effect

Because certain types of dry powder can cause breakdown of a foam blanket

Because certain types of dry powder is a flame inhibitor

Because certain types of dry powder not give protection against re-ignition

Telephones are being used to communicate between personnel onboard and ashore during a bunkering operation. What instruction would you give to ship personnel regarding action to take in the event of failure of the telephone communication during the operation?

Use a crewmember as a messenger between personnel involved in the operation.

Slow down the bunkering rate until alternative reliable communications are established.

Stop the bunkering until alternative reliable communications are established

Call the electrician, and get him to repair the telephone while the bunkering operation continues.

The earth lamps in a 3-phase system indicate as follows: Red= bright Yellow= dark Blue= dim . Which fault condition shown as red - yellow - blue is correct?

light earth - hard earth - no fault

no fault - hard earth - light earth

hard earth - light earth - no fault

light earth - no fault - hard earth

This is a typical emitter follower. What is the main benefit obtained by use of an emitter follower?

The collector can be connected to as high voltage as 10 V DC

The V out is always equivalent to the V in

The input impedance is made much larger than the output impedance

The input impedance is made much smaller than the output impedance

The vessel is steaming off the coast when the engine room informs the bridge it must stop engines immediately. Shortly afterwards they informed the bridge they would need a least three hours to fix it. Which of the following actions would be the most suitable taken by the bridge?

Display the NUC signal, maintain the watch and determine how the ship is drifting and the probable position after three hours.

Display the NUC signal and keep a good lookout

Display the NUC signal, maintain the watch and ask the Engine room to be a quick as possible

Display the NUC signal, maintain the watch and wait for further developments.

One or more pressure/vacuum-breaking devices shall be provided on the vent mains to prevent the cargo tanks from being subject to a positive and negative pressure. What is the normal pre-set point for negative pressure?

A negative pressure in excess of 500 mm water gauge.

A negative pressure in excess of 200 mm water gauge.

Depending on the test pressure of the cargo tank.

A negative pressure in excess of 700 mm water gauge.

The cargo tanks for liquefied gas carriers are grouped into 4 types depending on the survival capability requirements. Which of tank types is suited for the carriage of all cargoes listed in chapter 19 of the IMO IGC Code from a survival capability aspect?

2PG

What procedures should prevent normal ship work activities conflicting with cargo operations on a General Cargo Vessel?

Stevedore and Chief Officer planning meetings

Masters standing orders

Ships Security Code

Risk assessments and permit to work systems

What is a "consignee"?

Any person or company which seeks to transport a consignment of cargo by sea.

Any person, organization or government that prepares a consignment for shipment.

Any person, organization or government entitles to take delivery of a consignment.

Any person or company responsible for the operation of a vessel which carries a consignment as freight.

If a cargo has a literweight 0f 1.5 kg/l at 15° and a correction factor of 0,001, what is the literweight at 20° C ?

1.495 kg/l

1.4995 kg/l

1.505 kg/l

1.5005 kg/l

Once a vehicle has been stowed on board what should duty crew members ensure?

That the duty officer is notified of the vehicle’s position

That a photograph is taken of any damages

That the vehicle is lashed immediately

That there is no sign of tampering with internal accessories

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

A cargo of chilled meat is being loaded into the cargo space of a reefer vessel and the stow will extend 3.5 metres upwards into the coaming in way of the hatch square. Select, from the options given, the best method to adopt to achieve satisfactory carriage of this cargo.

Construct a false deck out of plywood sheets to reduce the load on the lower tiers.

Lay plywood sheets at approximately mid-height of the stow to reduce the load on the lower tiers.

Construct a false deck made of pallets to reduce the load on the lower tiers.

Ensure a tight stow to resist crushing of the lower cartons.

ISGOTT draws attention to the risk of electrostatic potential in a mist produced by using oil and water mixture in Crude Oil Washing operations. How does the Guide recommend this is avoided?

If a slop tank is to be used to supply oil to drive a Crude Oil Washing operation in a cargo tank, then that slop tank must not have contained slops with a water content of more than 2%.

As washing begins, any water observed in the stream should be diverted to a slop tank, before Crude Oil Washing af any cargo compartment is commenced.

Crude Oil Washing, where the oil source is stored in a slop tank or other tank that has previously contained slops, should be avoided.

Before washing begins, any tank that is to be used as a source of oil for Crude Oil Washing should be partly discharged to remove any water that has settled out during the voyage. The discharge of a layer of at least 1 metreis necessary for this purpose.

Emergency instructions in appropriate languages shall be posted in passenger cabins. Which information shall as a minimum be included in the emergency instructions?

Where to find thermal protective aids

Name of cabin attendant

Escape routes and alarm signals

The method of donning life-jackets, escape routes and alarm signals

What is the name of this unit?

A liferaft release unit

A slip hook

An antistatic release unit

A hydrostatic release unit

When unloading a generator, it is necessary to gradually decrease the load in order to avoid:

Undue overcurrent

Undue overload on the switchboard.

Undue overspeeding.

Undue temperature rise.

A very sensitive and valuable commodity is loaded into refrigerated container which is more than 12 years old. The container has been 'pre-tripped' with all routine maintenance having been carried out to the refrigeration plant and sensors with parts being replaced as necessary and all functions appear normal. Which aspect of using this container is most likely to cause problems during the voyage?

Degradation of the insulation due to the age of the container leading to excess heat transfer through the walls.

The accuracy of the control system of the refrigeration plant.

The age of the refrigeration plant.

The type of gas used in the refrigeration plant.

"What do crew, visitors and contractors all have in common?"

They’re all employees of the ship.

They’re all onboard the ship for the duration of its voyage.

They all have opportunity to smuggle drugs.

They’re all trained in ship emergency procedures.

You are paralleling two alternators and the pointer of the synchronoscope slowly stops rotating and remains stopped in one position before the circuit breaker is closed. This would indicate:

The voltage of the incoming alternator is the same as that of the main switchboard

The incoming alternator is in phase with the switchboard, but the frequency is not the same

The synchronoscope is not functioning properly and should be checked

The frequency of the incoming alternator is the same as that of the main switchboard

Why should elevators not be used in an emergency?

Too few people can be moved in an elevator.

The elevator is reserved for people with special needs.

Power could fail and passengers could be trapped inside.

Engineering will shut down the ship's power and the elevator will be useless.

You are alongside and the hoses have been connected for discharge. The jetty-man shouts across to you, telling you to start cargo. The Duty Officer has not yet given you any instructions to commence. What will you do?

Open the valves and start discharge as soon as possible.

Advise the jetty-man that there is a problem on board and you will notify him when you are ready.

Ignore the jetty-man. Do nothing.

Advise the Duty Officer and await further instructions. Ask the jetty-man to stand by.

You are in charge of discharging and crude oil washing a crude oil carrier.What is the maximum allowed oxygen level in the Inert Gas supply to a tank being crude oil washed (IMO)?

10%

Who is authorized to operate hoisting equipment?

Deck officers?

Personnel authorized by the master?

Deck personnel?

Stevedores?

Where are you likely to find horizontal fractures on a bulk carrier?

Along the upper edges of hopper tank plating and the lower edges of topside tank plating

Along hatch coaming connections to the main deck

Along the tanktop plating

Along the lower edges of bulkhead stools

What is IMO's definition of liquefied gas?

All chemicals with excess pressure above 2.8 bar at +73.8 C.

All chemicals with excess pressure above 8.2 bar at +37.8 C.

All chemicals with excess pressure above 2.8 bar at +37.8 C.

All chemicals with excess pressure above 2.8 bar at +100 C.

On a General Cargo vessel, what action should be taken when the discharge equipment such as chain slings to be used by stevedores, are considered unsuitable by ships staff?

Provide ships equipment to discharge

Refuse to discharge

Inform stevedores of concern and protest by letter

Continue discharge as planned and inform Designated Person Ashore(DPA)

What is normally seen as the greatest risk when operating a high pressure, water tube, steam boiler with an excessively high level of Total Dissolved Solids?

Pitting corrosion at the water level in the boiler water drum.

General corrosion of boiler tubes and fittings

Hard scale deposits on boiler tubes and fittings

Foaming and carryover of water into the steam range.

Is it required to have supplementary emergency lighting on board passenger ships?

Yes, all passenger public spaces and alleyways shall be provided with supplementary electric lighting

No, reflective marking indicates the escape routes

No, passengers should bring their own flashlights

No, portable battery operated lamps shall be provided in alleyways and public spaces

On a container vessel, select from the list the most effective method of dealing with a fire in an under deck cargo space.

Boundary cool the cargo hold from the deck.

Deploy the fixed fire fighting system.

Tackle the fire locally with fire hoses.

Turn the vessel off the wind to reduce the relative wind strength.

On a conventional reefer vessel the 'tween decks and lower hold are provided with scuppers leading into the hold bilges. The scuppers normally designed with a U-bend or non-return bend. Complete the following statement from the options given. "Prior to loading a cargo of hard frozen products the U-bend should be…

…filled with clean fresh water."

…filled with clean sea water."

left empty."

…filled with brine."

How often shall the inert gas scrubber be flushed with water?

Every hour

Before entering discharge port for inspection

After use

Once a year/18 months

On a conventional reefer vessel carrying palletised cargo, dunnage bags (air bags) are used to prevent the pallets from moving during bad weather. Assuming that the air bags are correctly positioned and inflated, select, from the options given, the other important function provided by these bags

They will help to achieve a good stowage factor.

They will prevent short circuiting of the cold air.

They will prevent chafing between the pallets

They will protect the ships structure.

The lubricating oil on the exhaust side of the turbine blower gets very dirty after only a few hours in service. What can the reason be?

Worn out bearing turbine side.

Exhaust gas leaking into the oil chamber.

Wrong type of oil used.

Lubricating oil is mixed with salt water.

In respect of a chemical tanker, carrying category "X", "Y" and "Z" Noxious Liquid Substances, what is understood by the term "Clean Ballast" as defined in the IBC Code?

Ballast water carried in a tank which, since it was last used to carry a cargo containing a substance in category "X","Y" or "Z", has been thoroughly cleaned and the residues resulting there from have been discharged and the tank emptied in accordance with the appropriate requirements of Annex II.

Ballast water carried in a tank which has been previously washed in accordance with the requirements of the Procedures and Arrangements Manual.

Ballast water that is free of all cargo residues and slops.

Ballast water introduced into a tank permanently allocated to the carriage of ballast or cargoes other than oil or Noxious Liquid Substances as variously defined in the Annexes of the MARPOL Convention and which is completely separate from the cargo and oil fuel systems.

With reference to the text in the frame: what is stated as a threat to lives at sea and the marine environment?

There is no immediate threat to the crew or environment

All old or new ships which are badly managed ships.

All ships aged between twenty and thirty years old.

Bad management and poorly maintained older ships.

When is a visitor onboard required to present an ID?

Only on SECURITY Level 3

On SECURITY Level 2 & 3

Never

"On SECURITY Level 1, 2 & 3"

Why should only one set of ballast tanks be filled at any one time on a Bulk Carrier?

To ensure that bending moments do not become excessive

To prevent excessive lists developing

To ensure that free surfaces in ballast tanks do not become excessive during the ballasting operation

To keep the vessel trimmed by the stern

Personnel in a high voltage switchroom smell ozone. This is likely to indicate which of the following?

Transformer overload

Vacuum circuit breaker problems

Arcing at badly connected bus bars

Air circuit breaker problems

Why should ro-ro passenger ships be subdivided into main vertical zones?

To comply with passenger safety, cargo safety and hull integrity training defined in the STCW convention

To comply with specific provisions for fire integrity defined by the Classification Society

To comply with specific provisions for fire integrity defined in SOLAS and to ensure safety of passengers and crew in case of a fire

To comply with company specific standards defined in the Safety Management System

What is the definition of "Mole"?

A substance capable of causing canser.

A graphic method of representing the heat quantities contained in air.

The volume occupied by one molecular mass in grams.

The mass that is numerically equal to to the molecular mass.

You are on a tug and are towing an unmanned barge. You are restricted in your ability to manoeuvre. The total length of the tow is 219 metres. What daylight signals are required by the International Regulations for Preventing Collisions at Sea?

A diamond shape, where it can best be seen, on the tug only. Three shapes shall also be displayed, being three balls in a vertical line.

Three shapes shall be displayed on the tug, where they can best be seen, in a vertical line, the upper and lower being balls and the middle one a cylinder. The signal flag "T" shall also be flown on the tug. A diamond shall be displayed aft on the tow.

Three shapes shall be displayed forward on the tug, in a vertical line, the upper and lower being balls and the middle one a diamond.

A diamond shape, where it can best be seen shall be displayed on the tug and the tow. Three shapes shall also be displayed in a vertical line, the upper and lower being balls and the middle one a diamond. Diamond shape

Where is a load-equalising device used?

With wind lashings

With parallel lashing rods

With single lashings

With upper and lower crossed lashings

The bottom end bolts employed in 4 stroke diesel engines are usually given a finite life and must be replaced periodically. What would be the normal failure mode that would affect these bolts if they were not replaced as required?

Failure due to torsional stresses

Failure due to bending stresses

Failure due to fatigue stresses

Failure due to tensile stresses

Two reference points for pressure exist, absolute zero and atmospheric pressure. What do you call pressures measured relative to atmospheric pressure?

Absolute pressure

Gauge pressure

Atmospheric pressure

Pressure drop

Where is the "FORECASTLE", in the figure?

The Forecastle is D, in the figure

The Forecastle is B, in the figure

The Forecastle is C, in the figure

The Forecastle is A, in the figure

What should you do in case of any fire breaks out?

Ask passengers to assist you with fire-fighting

Fight the fire and report to the bridge when you have extinguished it

Alert the bridge, Rescue human life, Extinguish if possible by use of available fire fighting-fighting appliances, Secure the area/ damage control

Call FIRE-FIRE-FIRE

What is the mean of mean draught?

Forward mean draught + after mean draught divided by 2

6 (forward mean draught + after mean draught) divided by 8

Forward mean draught + after mean draught + midship mean draught divided by 2

Forward mean draught + after mean draught + midship mean draught divided by 6

What does the Captain mean?

Set the engine to dead slow ahead, and change the course 10 degrees to port

There is a dead slow in front of the ship, 10 degrees to port

Set the engine to dead slow, and set the rudder angle at 10 degrees to port

There is a dead slow in port number 10

Before loading ore cargo, any spaces which previously contained oil, even if not being used for ore (example - wing tanks on an O/O carrier) should be cleaned and gas freed. On the ore loaded voyage these spaces should:

Be checked at regular intervals for gas which might be released perhaps from sludge deposits; and if such gas found, the tank to be re-gas freed?

Be kept completely sealed?

Be kept sealed after filling a foot of water in the bottom to prevent gas evolution from bottom sludge?

Be re-inerted after cleaning and gas freeing?

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