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Heim Online-Tests CES Dry cargo MASTER / Ch-Officer Test online CES 5.1 for MASTER / Ch-Officer, Dry cargo vessel
Online-Test: Test online CES 5.1 for MASTER / Ch-Officer, Dry cargo vessel
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A lifejacket or immersion suit light has a luminous intensity of, and is capable of working at minimum for a period of:
2 candelas (about 1,7 mile range at normal meteorological sight), 8 hours
2 candelas (about 1,7 mile range at normal meteorological sight), 4 hours
0,75 candelas (about 0,6 mile range at normal meteorological sight), 8 hours
0,75 candelas (about 0,6 mile range at normal meteorological sight), 4 hours
Give the meaning of the following symbol
Line throwing appliance
Rocket parachute flares
Parachute landing area
Survival craft distress pyrotechnic signals
According to European standards (E.N.) fire can be classified…
A, B, C, D, E
A, B.
A, B, C, D
A, B, C
How is the activation of any detector or manually operated call point of fixed fire- detection and fire-alarm systems to be indicated? (SOLAS II-2/13.1.4)
By all the indication methods listed
By visual and audible signal at the control panel and indicating units
By sounding the ship-s fire alarm signal in crew accommodation and service spaces
By alarm signals at the bridge and engine room control panels
Welding and use of open flames on board tankers in operation are subject to regulation laid down by the Norwegian Maritime Directorate (Norwegian Ship Control Legislation - NSCL). Which of the listed requirements regarding washing and gas freeing before hot work in cargo tanks corresponds to these regulations? (NSCL 22/1294/6).
During loading and discharging of liquified gases and cargo with a flashpoint below 60° C, the use of open flames in machinery and boiler spaces must not take place.
For ships provided with inert gas system minor welding work may be permitted.
No welding or hot work on board ships carrying cargo with flashpoint below 60° C must take place in the tank area before the cargo has been discharged and gas freeing carried out.
The ventilation system shall have a capacity of at least two changes of air per hour for work in enclosed spaces.
*Class "C" bulkheads are bulkheads constructed of approved non-combustible materials:
that can withstand the standard fire test for 45 minutes
that can withstand the standard fire test for 30 minutes
that need not meet any of the requirements relative to smoke and flame nor limitations relative to temperature rise
that can withstand the standard fire test for 15 minutes
The squelch on a mariphone serves:
to suppress background noise in the wheelhouse when transmitting
Don't know
to suppress noise
to increase or decrease the transmission range
The radiotelephony two tone alarm should NOT be used when sending which of the following types of messages?
An urgent cyclone warning sent by an authorised coast station.
Message concerning an important navigational message.
Man overboard when assistance using only the urgency signal cannot be obtained.
A distress message.
What does the abbreviation SOLAS mean?
International Convention for the Safety of Lives at Sea
International Conference for Security of Loads aboard Ships
International Rules for Safe Ocean Lines and Sailingroutes
International Agreement for Security of Load and Ships
Where should the placard you are shown be located, according to U.S. Coast Guard regulations ? (Title 33-Navigation and Navigable waters, § 155.440 )
In a conspicuous place at the bilge and ballast pump control station
In the wheelhouse
In a conspicuous place in each machinery space
Both in a conspicuous place in each machinery space and in a conspicuous place at the bilge and ballast pump control station
What is full form of VRP (OPA-90)
Vessel Report Plan
Vessel Response Procurement
Vessel Reporting Procedures
Vessel Response Plan
A faint is a brief loss of consciousness of no more than momentary duration caused by a temporary reduction in the flow of blood to the brain.How to prevent anyone from fainting?
Tell the person to sit down in a sitting position breathing normally.
Tell the person to sit down and lean forward with the head between the knees taking deep breaths.
Try to keep the person in an upstanding position.
If standing in a crowd, flex the leg muscles and toes to aid circulation.
Where shall shoreside fire-fighting personnel find necessary information to control a fire on board a cargo ship in an emergency situation?
Through the nearest Maritime Rescue Co-ordination Centre, who will get them from the ship's owner
In the fire control plans or booklet that must be posted in a prominently marked localisation on the navigating bridge
The captain of the ship is the only person that may give such information
In the fire control plans or booklet that must be stored in a watertight prominently marked container outside the deck house
You are sailing in shallow water, with 15% Under Keel Clearance. With full RPM, what will your speed be compared to deep water?
Faster
Stay the same
Slower
The RPM will drop with 15% of full
The rudder is in the hard over position with the propeller stopped and the ship turning slowly. On a ship with a single fixed pitch right handed propeller and no thrusters, what can be done to make the ship increase the speed of turn without significantly increasing the forward speed of the ship?
Give the engines a short kick ahead
Give full astern on the engines until ship has stopped and then full ahead on the engines with rudder hard over
Give dead slow ahead on the engines and leave the rudder in the hard over position.
Give half astern on the engines as this will increase the rate of turn
How much time can be saved by use of weather routing?
2%
Impossible to say
4%
6%
In maritime radio traffic sea area A2 is considered a sea area:
Don't know
with the exception of sea area A1 where communication is possible with at least one coast radio station MF telephony and continuous DSC alerting is possible
where reliable radio communication can be established with the use of a DSC on the MF frequency of 2187.5 kHz with one or more coast stations
of appr. 200 Nm offshore within the radio range of the radiotelephony distress frequency 2182 kHz
" On area A1 the function "" Transmission and reception of signals for locating "" is mainly based on:"
the use of SARSAT COSPAS Epirbs
the use of SART transponders
the use of VHF DSC
the use of INMARSAT Epirbs
Define the class of emission F1B :
Radiotelephony - Phase modulation
Radiotelex and DSC - Frequency shift keying of carrier with error correction
Radiotelex and DSC - Frequency shift keying of sub-carrier with error correction
Radiotelephony - Frequency modulation
Which of the following features is required for an anti-exposure suit ?
is marked with the name of the vessel to which the appliance belongs
is made of such a material that it cannot be torn
has a lateral field of vision of at least 120°
can be continously worn without impeding every duties to be performed by the wearer when in normal watch on the bridge
*Which one among the following information shall be marked on the container of an inflatable liferaft:
the port of registry of the ship to which the liferaft belongs
the name of the ship to which the liferaft belongs
the number of the liferaft
maximum permitted height of stowage above waterline
Which of the following fittings shall be provided to all lifeboats:
permanent boarding arrangements on both sides to enable persons in the water to board the lifeboat
a manually controlled lamp fitted on the outside
a remotely operated steering arrangement
an electric power starting system for the propulsion engine with one rechargeable energy source
Which item among those below is included in the normal equipment of every liferaft ?
two painters of a length equal to not less than the distance from the stowage position of the liferaft to the waterline
one boat-hook
one searchlight which can work continuously for not less than 3 hours
one (two for a 13 person accommodation) buoyant bailer
An abandon ship drill must take place 24 hours after the ship leaving a port with new crew members
if they are more than 10% of the total crew
if the total crew has been replaced
if they are more than 50% of the total crew
if they are more than 25% of the total crew
How often shall each member of the crew participate in an "abandon ship"-drill?
Once every month
Once every week
Once a year
Once every 6 months
What is the minimum distance between the helmet and the head of the wearer supposed to be?
1cm
3 cm
7,5 cm
No minimum distance.
You are the Sen.Off.Deck of a vessel involved in a collision. All necessary actions to ensure safety of crew and vessel has been taken. What shall you then tell the Sen.Off.Deck on the other vessel?
Don-t talk to the Sen.Off.Deck on the other vessel at all.
Name and Port of registry of your vessel.
That you are sorry for the collision.
Check with the pilot, or any witnesses, about their consideration of whom to blame for the collision.
Which of this information must be included in a piracy attack alert?
The type of weapons being carried by the pirates/highjackers.
The number of pirates/highjackers.
The number of crew onboard.
Your ship’s name and call sign.
By which method is the Vapour Pressure of Crude Oil determined?
The ASTM Elementary Assessment Method.
The API Open Cup Laboratory Method.
The Reid Closed Test method.
The True Vapour Pressure value is always used.
Every passenger ship is required to carry:
A rescue boat capable of being launched by the assigned crew in 5 minutes
A fast rescue boat capable of being launched when ship is still making headway
A fast rescue boat capable of being lowered when the ship is at anchor
There is no requirement of any rescue boat
The IGC code gives details of construction and equipment requirements for liquefied gas carriers. Under which circumstances would a liquefied gas carrier require a double bottom and a longitudinal bulkhead forming full side ballast tanks in way of the cargo containment system?
Only when the cargo is carried at less than minus 10 degree C.
Only if the cargo tanks are designed for fully refrigerated LPG cargoes.
Only when the cargo is carried at temperatures below minus 55 degree C in cargo tanks without a secondary barrier.
Only when the cargo is carried at temperatures below minus 55 degrees C in cargo tanks with a secondary barrier.
What is the maximum allowable tank design pressure in the vapour space on Type "A" tanks?
0.43 barg.
0.5 barg.
0.25 barg.
0.7 barg.
The temperature of the feed water for an auxiliary boiler is automatically controlled by a pneumatically actuated steam valve at the inlet to the pre-heater. It is noticed that during high demand the temperature falls by an unacceptable amount and takes a long time to return to the set temperature even though the steam supply pressure remains constant. Select from the options given the most likely cause of this.
The controller proportional band is set too wide.
The controller proportional band is set too wide and the reset time is set too long.
The controller reset time is set too long.
The control air pressure regulator is set too low.
When data are to be transferred over telephone lines, we often utilize modem at each end. Which of the following adapter cards (parts) will you use for interfacing a modem to a computer?
Enhanced graphic adapter
Parallel adapter
Serial adapter
VGA display adapter
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
The station bill contains the details of the emergency signals and:
each crewmember's emergency and regular duties
each crewmember's duties in an emergency
only the officers' duties in an emergency
crew and passenger duties in an emergency
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.
For what purposes is nitrogen used in cargo tanks on a chemical tanker?
Cleanliness (provision of a clean atmosphere in the tank) and quantity (minimising any loss of cargo through evaporation).
Maintenance (nitrogen in the tank restricts moisture build-up and stops corrosion on the tank bulkheads).
Quality control (the nitrogen blanket ensures a uniform temperature throughout the product by stopping loss of heat at the surface).
Safety (atmosphere control) and purity (maintenance of quality of product by stopping contact with air).
What do the letters "TPC" stand for?
Tonnes per Centimetre.
Tipping Centre.
Trim per Centimetre.
Tonnes per Centimetre Immersion.
Apart from temperature there are few differences between carrying cargoes of chilled meat, minus 1 degree Celsius, and frozen meat, minus 18 degrees Celsius. A key difference is that for frozen meat the cooling fans are operated at half speed or some are switched off whereas for chilled meat the fans are run constantly at full speed. Select, from the options given, the main reason for this difference in fan operation.
It is an energy saving measure since chilled meat cargoes do not require as much cold air.
The chilled meat is more sensitive to damage and therefore tighter temperature control is necessary.
The fans may be damaged if they were run at full speed delivering very cold air to the frozen cargo.
Running the fans at full speed would generate too much heat which may affect the frozen meat.
Cargo residues of certain chemical substances are permitted to be removed by ventilation. What criteria is applied in determining if a cargo can be cleaned in this way? (Always accepting that local port authorities may have over-riding regulations on ventilation).
That the cargo discharged has a vapour expansion coefficient of at least 1.025.
That the cargo discharged has a vapour pressure greater than 5 KPa at 20 degrees Celsius.
That the vessel's ventilation system is capable of delivering a minimum of 20 changes of atmosphere per hour within the compartment.
That the volume of the tank does not exceed 1750 cubic metres, that the maximum remaining residues are less than 75 litres and that ventilation is additionally possible directly down the pumpstack.
Prior to arrival at a US port from a foreign port, the USCG requires:
24 hour notice of arrival
48 hours notice of arrival
96 hours notice of arrival
72 hours notice of arrival
A clogged / dirty lube oil filter can be detected best by:
The pressure drop across the filter.
Visual inspection of the filter elements.
A decrease in oil viscosity.
High lube oil temperature.
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.
A situation arises where there is insufficient fruit cargo available to fill a cargo space. There is a cooler arrangement (cooler/evaporator/brine nest/fans) positioned at one end of the cargo space. Select, from the options given, the best method for stowage of the fruit.
Start at the end with the cooler arrangement and work away from the cooler.
Start from one side of the space.
Start from the centre of the space and work towards both ends.
Start at the opposite end to the cooler arrangement and work towards the cooler.
What is the requirement with regard to Familiarisation on board?
During the first tenure, seafarers are responsible for asking at least a 100 questions to the Safety Officer.
Seafarers, on being assigned to any ship, shall be familiarized with their specific duties and with all ship arrangements, installations, equipment, procedures and ship characteristics that are relevant to their routine or emergency duties.
Seafarers on board passenger vessels must as soon as possible learn the names of all persons working in the same department in order to ensure efficient daily operation.
Seafarers shall be familiarized with all life saving appliances and emergency exits in case any emergency situation occurs. It takes normally an hour to complete the Safety Familiarisation. The safety Officer is responsible.
What is the minimum number of ”Firemen’s outfit” on gas tanker, above 5,000 m3, carrying flammable products?
2 sets of Firemen’s outfits
4 sets of Firemen’s outfits
3 sets of Firemen’s outfits
5 sets of Firemen’s outfits
What percentage of anti-freeze fluid is added to the L.P.G. compressor cooling-water system?
60 %
25%
10%
90%
How is the temperature of the high temperature circuit of a central cooling system normally controlled?
By controlling the bypass of flow for the central coolers.
By increasing the flow rate through the main engine cooling circuit
By controlling the flow through the fresh water evaporator heating circuit.
By mixing with water from the low temperature circuit.
A high pressure, oil fired steam boiler operates with an automatic combustion control system for start, stop and modulation of the burners. Which feature of the combustion control system is intended to minimise the risk of blowback during normal operation?
Pre-purge of the furnace prior to burner ignition.
Automatic retraction of the burner after shut off.
Post-purge of the furnace following burner shut off.
Burner shut down in the event of flame failure.
Where do you load dangerous goods?
Dangerous goods shall only be loaded in designated ares on the ro-ro deck
The driver of a tank lorry can decide where to park the vehicle
The officer in charge of loading can decide where to load dangerous goods if the number of vehicles and passengers are limited
As long as the ship is certified to carry dangerous goods there are no restrictions
Which of the following would normally only be found in cargo holds which can also be used for ballast on a Bulk Carrier?
Permanently fitted dunnage
Light reflective paint coatings and fixed lighting systems
Bilges systems fitted with two way valves
Sacrificial anodes and water resistant expoxy paint coatings
What is the name of this unit?
A slip hook
A hydrostatic release unit
An antistatic release unit
A liferaft release unit
For what purpose is inert gas normally used in the cargo tanks of a liquefied gas carrier?
To maintain an inert atmosphere in the tanks during a loaded voyage.
To prevent an explosive atmosphere forming in the cargo tanks before gas freeing.
To pressure test the cargo tanks after repair work.
To help displace the cargo from the tanks during discharge.
On a Container vessel, what should a crew member do if a tank container on deck is found with a leaking valve?
Close the leaking valve
Wash away the leaking contents immediately
Raise an alarm
Report it immediately to the duty officer
What type of damage does a cargo of steel coils sustain when loaded on a General Cargo ship?
Chemical reactions between the steel banding and outer envelope
Bending
Tearing
Crushing and distortion
Fluid-driven eductors (as commonly found on crude oil tankers), operate on a principle known as Bernoulli's principle. What does that state?
The increase in pressure at the eductor inlet is inversely proportional to the decrease in pressure as measured at the discharge orifice.
The volume of a fluid increases as the pressure in it decreases.
The discharge rate is inversely proportional to the pressure applied in the drive inlet.
The speed of a moving fluid increases as the pressure in the fluid decreases.
What lights are required on an inconspicuous, partly-submerged vessel or object of less than 25 metres in breadth (other than a dracone) being towed?
A flashing yellow light on the tow, where it can best be seen.
One all-round white light on the tow where it can best be seen.
No lights are required on a tow of this description.
One all-round light at or near the forward end and one at or near the after end of the tow.
On a RoRo vessel, where is the best place to find information on loading ramp limitations?
In the stability booklet
In the company's safety instructions
In the loading ramp manual
Where should empty and unlceaned receptacles that previously contained toxic gas be stowed?
Under deck
On deck forward of the accommodation
Anywhere on deck
On deck abaft the accommodation
What are the main elements in a damage control plan?
A damage control plan is the same as an emergency plan
Arrangements for correction of list due to flooding within 15 minutes
Boundaries of the watertight compartments for decks and holds. Position of controls for opening and closing of watertight compartments. Arrangement for correction of list due to flooding.
Instructions and procedures for reporting damage to the Company
A consignment of steel drums containing IMDG Class 8 cargo are about to be loaded in the hold of a General Cargo vessel; a number of drums are leaking slightly, what action should be taken?
The cargo consignment not be loaded at present; the Chief Officer must be informed and make final decision if the cargo is to rejected
The cargo must be stowed under deck
The drums can still be loaded provided that they are only loaded on deck
The cargo cannot be rejected and must be loaded
At what calendar interval must cargo hoses in service on board be tested and certified as fit to continue in use?
Every 24 months.
Every 12 months.
They do not need to be tested and re-certified for the first three years, but must be tested and certified every 12 months after that.
Testing is not calendar based. Cargo hoses must be tested and certified every 48 operations.
Indicate the correct name of the tool on the sketch:
Chisel
Drill press
File
Shaping machine
What name is given to the flow diagrams that appear in the Annex II Procedures and Arrangements Manual, which guide the user through the methods to be followed in cleaning a tank after containing a Noxious Liquid Substance?
Collection and Disposal Protocol.
Cleaning and Pumping Diagrams.
Cleaning and Disposal Procedures.
Chemical Disposal Plans.
Cargo hoses intended for liquefied gas carriers have to be prototyped tested before being approved. When new hoses of an already approved type are received onboard they also need to be pressure tested before being put into service. What are the IMO Gas Code requirements for such hoses before they are put into service?
Not less than 1.5 times the specified maximum working pressure or more than two fifths of bursting pressure at the expected cargo carriage temperature.
5 times the specified maximum working pressure at ambient temperature.
5 times the specified maximum working pressure at expected cargo carriage temperature.
Not less than 1.5 times the specified maximum working pressure or more than two fifths of bursting pressure at ambient temperature.
When starting cargo compressors they should be:
Unloaded.
Fully loaded.
Half loaded.
It does not matter.
Provided it is considered safe to do so what is the best method of cleaning a cargo hold that contained grain?
Sweep the cargo holds after discharge
Hose down the cargo holds after discharge
Sweep and clean cargo holds from the top down as discharge progresses
Sweep and clean cargo holds from the top down as discharge progresses followed by a final wash
On a Container vessel, what is 'defrosting' associated with?
Reefer containers
Containers carrying IMDG cargoes
Dry cargo ventilated containers
Fan containers
A bulk cargo of steel coils is loaded and a number of the coils are noted by the Chief Officer to be rusted; what must the Master ensure?
Steel coils to be discharged
Clause the Bill of Lading with the reference numbers of the rusty coils and so make the Bill of Lading a "dirty" Bill.
No action needs to be taken.
Cargo temperatures measured on voyage
You have just finished loading a cargo of Methyl Isobutyl Kentone. What must happen before the shore hose can be disconnected?
The drip-tray must be half-filled with fresh water.
All possible cargo residues in the line must be drained or cleared and any pressure relieved. The manifold valve and shore valve must be confirmed as closed.
Any pressure remaining in the hose must be relieved by rapidly slacking off the bolts on the connecting flange.
Any cargo residues in the line must be drained to the drip-tray. The manifold valve on the ship must be open to allow maximum drainage and only closed after the hose has been removed.
The design features of a container ship with pronounced bow flare, a wide flat transom stern and wall sided amidships section contribute to what occurrence?
Excessive pitching
The ability to shed water very quickly off the decks
Large angles of heel with a large GM
Parametric Rolling
What is the purpose of Material Safety Data Sheets?
To provide all personnel including emergency personnel with procedures for handling or working with that substance in a safe manner
To provide personnel in deck- and engine department with procedures for handling or working with that substance in a safe manner
To provide the safety officer with procedures for handling or working with that substance in a safe manner
To determine if the substance is flammable or not
Data loggers are a vital part of the temperature control and monitoring system on a reefer vessel. In a situation where the data logger fails several days before the end of the voyage it is still necessary to maintain control of and monitor cargo temperatures. How could an accurate, portable thermometer be used to the best effect, to achieve this, in such a situation?
Use the thermometer to maintain the delivery air settings as they were prior to the data logger breaking down.
Use the thermometer to check the pulp temperature by entering the cargo space and placing it in the centre of the stow.
Use the thermometer to check and control the delivery air temperature by inserting it in the delivery air ducting close to the evaporators.
Use the thermometer to check and control the return air temperature by holding it in the return air space on top of the cargo.
Why should all bulk cargoes be trimmed and levelled on completion of loading?
To assist in the discharge
To prevent flammable gasses being generated
To reduce the possibilities of the cargo shifting at sea
To reduce the risk of cargo damage on passage
What can be done to effectively reduce the rate of ice accretion on containers during loaded sea passage?
Increase speed
Heave to
Reduce speed
Have the crew remove the ice
What publication must be carried on a vessel carrying dry bulk cargoes?
Charters' Solid Bulk Cargoes Code?
IMO Solid Bulk cargo Code or IMO Solid Bulk?
International Tankers and Terminal Code?
Classification Society Grain Rules?
What does this flag mean?
My vessel is stopped and making no way through the water.
Yes (affirmative).
I wish to communicate with you.
I have a diver down; keep well clear at slow speed.
What factors do you consider as important before mooring a vessel?
Use of proper Personal Protective Equipment, Well maintained mooring equipment, Make sure the area is tidy and clean, Mooring stations should have effective hazard markings/ hazard highlighting, Stay clear of mooring ropes/wires, Be aware of Snap-back Zone, Proper procedures, Effective communication
Use of proper Personal Protective Equipment, Mooring stations should have effective hazard markings/ hazard highlighting, Stay clear of mooring ropes/wires, Be aware of Snap-back Zone, Proper procedures
Use of proper Personal Protective Equipment and be aware of Snap-back Zone
Use of proper Personal Protective Equipment
What is the letter ‘P’ under the IMDG Code?
Pollutant
Marine Pollutant
Severe Marine Pollutant
Packaging
What is a Jensen Sling used for?
Loading and discharging bales
Loading and discharging steel pipes
Loading and discharging paper reels
Loading and discharging packaged timber
When preparing to ballast the double-bottom tanks of a General Cargo Vessel, which of the following must be done?
All tanks ballasted at the same time
All cargo operations completed
The Chief Officer's ballast plan followed exactly
Ensure that the vessel is kept on an even keel throughout the operation
Which of these statements about profiling is correct?
Check the ID of all visitors and some crew prior to boarding.
Pay less attention to body language and behaviour and more attention to answers to questions.
Use only open-ended questions.
Verify that answers to questions match up with what’s already known about the person being questioned.
Whish of the following disposal would be permitted?
Food waste from a vessel outside a special area and 10 miles from nearest land
Food waste from a vessel inside a special area and 10 miles from nearest land
Paper products from a vessel inside a special area and 15 miles from the nearest land
Food waste from a vessel outside a special area and 12 miles from the nearest land
Many large slow speed diesel engines operating on heavy fuel oil have a fuel injection system which features Variable Injection Timing. How does this affect engine operation?
VIT allows the ship's engineers to alter the injection timing for each load setting with a simple single adjustment of the fuel rack.
VIT increases engine efficiency by automatically maintaining the maximum cylinder pressure over the entire load range.
VIT increases engine efficiency by automatically maintaining the maximum cylinder pressure over part of the load range.
VIT improves engine operation by automatically controlling the start of fuel injection when it detects a poor quality fuel.
The "dew point" of a liquid chemical is often quoted in the documentation relating to its loading and carriage. Which of the following is a definition of "dew point"?
The temperature at which a gas is saturated with respect to a condensable component, as in operational terms is seen at the point when air is saturated with moisture.
The temperature at which dry-ice melts in Acetone.
The temperature at which a condensable component is saturated with respect to a gas, as in operational terms is seen at the point when moisture no longer detectable in air.
The temperature at which a saturated gas exhibits condensation.
Many LNG vessels have spherical cargo tanks. Which of the statements given in the options is the most accurate?
Using spherical tanks means double hulls are not required.
Using spherical tanks means that the cargo can be carried at pressures well above atmospheric.
Using spherical tanks allows more cargo to be carried as the tank is positioned above the deck.
Using spherical tanks means only a partial secondary barrier is required.
How is cargo in a self-unloading bulk carrier fed to the vessel’s conveyor belts during discharge?
Via remote-controlled hopper gates at the bottom of each hold
Via hydraulically-operated hopper gates at the bottom of each hold
By gravity through mechanical hopper gates at the bottom of each hold
Via mechanically-operated hopper gates at the bottom of each hold
Why are zinc anodes sometimes fitted in the seawater side of heat exchangers?
To prevent accumulation of marine growth
To reduce salinity
To prevent scaling
To protect against corrosion
*A davit-launched liferaft on board a ship is so arranged to be boarded by its full complement of persons in less than:
2 min
1min
4 min
3 min
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