GLOAPM.COMBy rank
By rank
By vessel type
On the Map
News and Learning Resources
For seamen
For companies
Search for current vacancies:
Show filters
Search resumes for seafarers:common basemy base
Home Online tests CES Oil tanker Deck Support Test online CES 5.1 for Deck department, Support level, Oil tanker vessel
Online testing: Test online CES 5.1 for Deck department, Support level, Oil tanker vessel
Select the test mode:
Education
Online test
Description
The test consists of random questions on a selected topic.
Question 1 from 90
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- 31
- 32
- 33
- 34
- 35
- 36
- 37
- 38
- 39
- 40
- 41
- 42
- 43
- 44
- 45
- 46
- 47
- 48
- 49
- 50
- 51
- 52
- 53
- 54
- 55
- 56
- 57
- 58
- 59
- 60
- 61
- 62
- 63
- 64
- 65
- 66
- 67
- 68
- 69
- 70
- 71
- 72
- 73
- 74
- 75
- 76
- 77
- 78
- 79
- 80
- 81
- 82
- 83
- 84
- 85
- 86
- 87
- 88
- 89
- 90
*In which one of the following an oil, the flash point of which only needs to be over 43°C, may be used?
In the kitchen
In the main engine
In emergency generators
In inert gas generators
The aim of fire detection is
to activate the alarm
all the answers are correct
to discover where a fire starts
to begin applying an emergency plan
What is false regarding the function :” Transmission and reception of on scene communications ”
On area A1 this function is based on the use of VHF R/T
On area A4 this function is based on the use of HF R/T
On area A3 this function is based on the use of VHF or/and MF R/T
On area A2 this function is based on the use of VHF or/and MF R/T
Can a nitrogen blanket be maintained on a cargo containing an inhibitor which is "oxygen dependent"?
No, if this is done the lifetime of the inhibitor will rapidly expire.
I don't know.
Yes, provided the blanket only reduces the oxygen content in the ullage space to a minimum of 8% oxygen, which will still be enough for the inhibitor to function properly.
xx
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
The vessel is involved in a rescue operation for a Man Overboard and is to launch a lifeboat. What additional items would be very useful to take onboard the lifeboat to assist in the operation?
Extra Painter
Extra food
VHF or some means of communication
Blankets
Who is responsible for the number and the position of any tugs to be used during a mooring operation?
The Master, with consideration of the advice of the pilot
It will be only the wind speed that will determine the required number of tugs and how they are used.
The Port Authority will dictate the tug requirements and their use within the port limits
The Pilot is fully responsible for the number and use of tugs within the port area
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
Once a ship (equipped with self-stowing auto-tension winches) is moored alongside a loading or discharging berth, it is recommended that:
All winches to be left with the manual brake on and out of gear.
All mooring winches be left in 'auto-tension' mode
The 'spring' winches be left in the auto-tension mode and all other winches with the manual brake on
The 'breastline' and 'headline' winches be left in the auto-tension mode and spring winches with manual brake on
The ship has a single fixed pitch right-handed propeller and is going astern as illustrated. What is the most likely way the ship will react in these circumstances?
The bow will "seek" the wind and the ship will swing to port
The stern will "back" into the wind and the ship's heading will swing to starboard.
The stern will fall off to starboard, making the heading swing to port.
The ship will go straight astern and the heading will remain approximately the same
The rudder is hard over when steaming at full ahead in shallow water. How much "lift force" remains when the engine is stopped?
About 10 %
About 50 %
There will be lift force remaining
About 80 %
A tug is connected in a line at your bow. Will the bollard pull be the same at any speed?
Yes, the bollard is the same at any speed
No, when the speed exceeds 5 knots we have not much help in a tug
No, when the speed is increasing, the bollard is also increasing
We will have the best use of the tug when the ship makes sternway
If making a new pilot ladder onboard, which of the following ropes would you use in its construction as side ropes on which the steps are fastened?
Uncovered manila rope.
Polyester rope.
Polypropylene rope.
Nylon rope.
How many rescue boats should be provided on passenger ships of 500 gross tons and above?
None
Two, and at least one of the rescue boats shall be a Fast Rescue Boat
One Fast Rescue Boat
Two, one on each side of the ship
Training manuals for Life Saving Appliances and Fire Fighting systems and equipment shall be provided in crew mess room, recreation room or in each crew cabin. The training manuals shall explain the following in detail:
Emergency procedures including alarm signals, general instructions and safety practice onboard, specific information on equipment, operation of equipment
Manufacturer's specific information on equipment including maintenance procedures, operation of equipment
General Emergency procedures
Alarm signals and donning of lifjackets
What is the safe time for operating the crankcase door when oil mist alarm is activated and the engine has been stopped?
After 20 minutes
After 1 minute
After 10 minutes
After 5 minutes
Temperature sensors of all types are normally mounted in a well, or pocket, when used in pipelines. Why is this done?
Allow removal of the sensor also when liquid is flowing in the pipe.
Decrease the temperature gradient between the liquid and the sensor.
Avoid electric current flowing from the sensor to the liquid.
Suppress electro-magnetic interference between liquid in the pipe and the sensor.
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
What is shown in the attached image?
The attached image shows derricks
The attached image shows deck cranes
The attached image shows grabs attached to deck cranes, during cargo opertions
The attached image shows grabs attached to derricks, for cargo opertions
On the figure there are four (4) possible definitions of the term "STARBOARD QUARTER" given. Which one is the correct one?
Starboard quarter is given by D on the figure
Starboard quarter is given by B on the figure
Starboard quarter is given by C on the figure
Starboard quarter is given by A on the figure
Why is it important for hatch coaming compression bars to be maintained in good order?
So that hatch covers remain water tight
So that water can drain out from the hatch coaming drains
So that there is no steel contact between the hatch covers and hatch coaming
So that hatches can be properly sealed
What are the main components causing the magnetic compass to require a regular evaluation and compass correction?
The change in the position of the magnetic pole causing annual changes in the variation
Permanent and induced magnetism in the ships structure
The continual changes of courses steered by the ship
Deviation and Variation
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
Which type of reliquefaction plant can have the cooling coil placed directly in the vapour space of the cargo tank?
The single-stage direct cycle reliquefaction plant.
The two-stage direct cycle reliquefaction plant.
One type of the indirect cycle reliquefaction plants.
The cascade direct cycle reliquefaction plant.
When working in parts of the inert gas system such as the scrubber or deck water seal, what procedure must be followed?
Normal working practice.
Working with self contained breathing apparatus (SCBA).
Enclosed space entry.
Working aloft.
What would be the most probable cause of light, smoky exhaust from a diesel engine?
The engine is overloaded.
Air in the fuel oil system.
Fouling of the charge air cooler.
Water carry over from charge air cooler to engine cylinders.
A 450 volt, 859 kW rated generator has not been in operation for several weeks. Prior to starting, insulation resistance readings are taken. The minimum acceptable insulation resistance reading on the main stator winding to allow you to proceed with running the generator is:
10 Ohms
10 000 Ohms
10 000 000 Ohms
1000 Ohms
What is "UNDER KEEL CLEARANCE", in the figure?
Under Keel Clearance is indicated by C, in the figure
Under Keel Clearance is indicated by A, in the figure
Under Keel Clearance is indicated by D, in the figure
Under Keel Clearance is indicated by B, in the figure
On a Container vessel, when will a hatch pontoon's quick-acting cleat need replacement?
When the rubber washer is compressed and hardened
When the cleat has sprung open at sea
When the cleat retainer is rusty
When the cleat retainer is distorted
Why are duplex filters usually employed in the lubricating oil system of an auxiliary diesel engine?
Changing of the filter element can be carried out without interrupting engine operation.
The pressure drop is half that of a single filter unit.
Filter blockage will not occur.
It gives better filtration of the oil.
Who is responsible for completing the DoS on behalf of the ship?
Chief Officer
Ship Security Officer
Company Security Officer
Chief Engineer
Two identical medium speed engines are connected through clutches and a reduction gearbox to a single controllable pitch propeller. It is noted during normal operation that the load sharing between the engines is uneven with one engine taking a greater proportion of the load as the total load increases even though they are equally loaded at low load. Select from the options given the most likely cause of this problem.
One of the engines is running faster than the other at high loads.
The fuel filters in the supply line for one of the engines are blocked
The governor droop settings are incorrectly set and are not matched.
The clutch on one engine is slipping.
Which of the following alternatives are recommended when decanting water overboard from the sloptank?
Maintain a speed of at least 12 knots when pumping overboard
Leave a "cushion"of water in the sloptank, to minimize the risk of polluting the sea
Using dispersing chemicals in the sloptank
Discharge under the waterline to avoid any sheen on the surface
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
When you are calibrating an instrument what is the most common second step in the procedure (consult the manual)
Adjustment of span
justment of Zero-point
Adjustment of range
Check linearity
A 6-Volt relay is to be used with a 12-Volt power supply. The relay requires a current of 0.1 Amp. What is the series resistance required.
480 ohm
120 ohm
80 ohm
60 ohm
What should the Fitter be asked to do?
The Fitter should be asked to stack empty oil drums on the forecastle
The Fitter should be asked to dispose of empty oil drums overboard
The Fitter should be asked to drain hydraulic oil into the sea
The Fitter should be asked to check the level of hydraulic oil in the header tank
What is the main fire fighting medium for tank deck on gas and chemical carriers?
There is not any main medium for tank deck fire fighting on gas and chemical carriers
Foam is the main medium for tank deck fire fighting on gas and chemical carriers
Freshwater is the main medium for tank deck fire fighting on gas and chemical carriers
Chemical powder is the main medium for tank deck fire fighting on gas and chemical carriers
Why does MARPOL require debottoming of tanks prior to COW?
To prevent electrostatic generation
In order not to mix crude and water
To prevent corrosion in COW machines and COW piping
To prevent corrosion of tanks
What percentage of anti-freeze fluid is added to the L.P.G. compressor cooling-water system?
60 %
25%
10%
90%
When calibrating an pressure transducer we have to adjust both SPAN and ZERO. Please indicate in which order these adjustments should be done.
The order of adjustment is of no importance.
First Span adjustment and then Zero adjustment. After that Span setting should be checked gain.
First Span adjustment and then Zero adjustment. After that Span setting should be checked again.
First Zero adjustment and the Span adjustment. Then Zero should be rechecked.
Is it required to have full secondary barrier on spherical Type "B" tanks?
Yes, and the secondary barrier must be able to contain tank leakage for a period of 15 days.
Yes, if the tank is not crack propagation resistant.
Yes, it is required to have full secondary barrier.
Only partial secondary barrier required.
Perishable cargo is usually stowed on wooden pallets. The pallets are designed for either two-way or four-way fork lift entry. From the point of view of use on a refrigerated vessel, choose the option which highlights the most important difference between these two types of pallet.
The four-way pallet uses less material.
The two-way pallet is more robust.
The two way pallet is easier to construct.
It does not matter which way around the four-way pallet is stowed.
Under international regulations where must entries be made with regard to the disposal of cargo residues into the sea?
In the Deck log book
In the Official log book
In the Garbage record book
In the Cargo record book
A lubricating oil having a high viscosity index number would normally be used in which of the following situations?
When the machinery operates at a very high temperature.
When the machinery operates at a high load.
When the machinery operates at a very low temperature.
When the machinery operates over a wide temperature range.
Why are pure RoRo car carriers considered as being high risk design vessels where their stability is concerned.
Because they have few internal bulkheads
Because of the relatively small clearance between waterline and stern ramp sill when fully loaded
Because they can easily capsize if there is ingress of water or ballast operations are not handled correctly
One of the two water level gauge glasses on the high pressure boiler steam drum has started leaking quite heavily. What action, from the options given, should the boiler watch rating take?
Inform the Officer of the watch immediately so that arrangements can be made to replace the leaking glass.
Try and stop the leak by tightening up the clamping bolts as much as possible.
Place a bucket underneath the leak to catch the water to prevent the area becoming slippery.
Shut the steam and water connections to the gauge glass to minimise the loss of water and just use the other glass to check the water level.
Which of the methods given in the options should be used to test a remote reading temperature gauge for the auxiliary boiler exhaust gas?
Check the resistance change in the sensor over a known temperature range against the resistance values in the product sheet.
Place the sensor in a test tank of oil fitted with a heater element and thermometer and check the temperature gauge at different temperatures.
Place the sensor in a test tank of water fitted with a heater element and thermometer and check the temperature gauge at different temperatures.
Fit a spare temperature gauge and see if the readings are the same.
Measurement of oil cargoes is often achieved with a "UTI" device. What do the letters "UTI" stand for?
Uniform Tank Indicator.
Uncorrected Tank Innage.
Ullage Topping Instrument.
Ullage Temperature Interface.
When planning bunkering operations it is preferable to arrange for the new fuel to be bunkered into empty or nearly empty tanks whenever possible. What is the main reason for this?
To minimise the risk of microbial contamination of the fuel.
To make it easier to calculate the quantity of fueltaken onboard.
To minimise the risk of incompatibility between different fuels.
So that the sulphur content of each fuel is known.
What are the advantages of ballasting double bottom ballast tanks by gravity filling on a Bulk Carrier?
Ballasting can be done without any supervision
There is minimum pressure head on the tank top and pumps are not required
Free surface effect is eliminated
Ballasting is done more quickly
From which locations is it normally possible to close watertight doors?
A watertight door can only be closed by a control adjacent to the door
Watertight doors can be closed locally and also a remote control station within the accommodation
Watertight doors can be closed adjacent to the door and remotely from bridge and also one emergency remote control station
Watertight doors can be closed from the bridge and an alarm sounds at the door
"Your ship security plan must include procedures for responding to security threats, auditing security activities and interfacing with the port facility."
FALSE
.
TRUE
What is the name of the portable walkway or access between ship and shore?
Bulwark
Bridgeway
Accommodation ladder
Gangway
What kinds of checks must be carried out on slings, wires and other items of lifting equipment before they are used in routine operations?
They must be tested under load, to ensure they can bear the planned weight.
They must be visually inspected to ensure that the ID and SWL marks are clearly legible.
They do not need to be checked. They are checked under the vessel's planned maintenance system every 12 months.
They must be visually inspected and ascertained, so far as is possible, as being in good working order and fit for purpose.
What is done at a five yearly thorough inspection of lifting plant on a General Cargo vessel?
Derricks are tested
Lifting plant is proof load tested and all parts thoroughly examined
Deck cranes are tested
Deck cranes are tested and their parts thoroughly examined
How do container ships without hatch covers comply with the International Convention on Load line Rules?
An International Load Line Exemption certificate will be issued in accordance to Article 6.
A special movable deck is provided to ensure watertight integrity
There will always be hatch covers on ships to comply with the International Load line Rules
This type of container ship does not need to comply with the Load line Rules
What is a system employing a single common freshwater cooler (cooled by means of seawater) called?
High temperature freshwater system
Central cooling system
Common cooling system
Low temperature freshwater system
After communication plugs are connected, the ESD is tested from?
No testing required.
Shore.
Ship and shore.
Ship.
There is an "industry standard" book, found on oil tankers, which explains all about oil cargo and cleaning operations and their associated hazards. What is it called?
The International Convention for the Prevention of Pollution from Ships (MARPOL).
The International Safety Management Code (ISM).
The International Safety Guide for Oil Tankers and Terminals (ISGOTT).
The United Nations Guidelines on Safe Ship Management (UNSSM).
Which of these emission control requirements is correct?
Incineration of PCB's is permitted
Equipment containing ozone-depleting substances may be dumped at sea 50 miles from land
Installation of an exhaust gas cleaning system reduces emission of nitrogen oxide
Low sulphur fuels reduce emissions of volatile organic compounds
On a Container vessel, what will happen if an unsafe stevedore working practice in the United States is not corrected by ship's personnel?
The port will lodge a protest against the ship
The ship will be detained by the port state control authority
The ship will be prosecuted
The ship's personnel involved with cargo operations will be arrested
What does the term "ullage" refer to?
The measured depth of product in a cargo tank.
The height from the bottom of a cargo tank to the top.
The special calculations that the Chief Officer makes when he works out the ship's final draughts before sailing.
The depth of free space left in a cargo tank above the current liquid level.
What causes deterioration of a hatch cover hydraulic system?
Extremes of weather
Repeated hatch cover operations
Ice accretion on piston jackets
Dust and cargo particles around the piston seals
Which of the following is the purpose behind holding a pre-cargo transfer meeting before discharging a number of chemical grades?
To enable the master to confirm that ship's personnel have been advised of the cargo operation requirements on the Vessel Particular Questionnaire mailed to the ship's agent prior to arrival in port.
To ensure that all personnel involved are aware of the details of the proposed cargo operation, the services required and the safety considerations.
To establish tank readiness and the status of any other pre-operation preparations in order for the master to be able to confirm a time of arrival.
To ensure that the responsibility for all items on the Ship/Shore Safety Checklist is assigned and understood before the vessel arrives alongside.
What is DRI?
Designated Room for Inspectors
Density of Regular-sized Ingots
Direct Reduced Iron
Directly Related Incident
A cargo pumproom must be mechanically ventilated. What is the minimum number of atmosphere changes per hour that such a system must achieve?
10 changes per hour.
There is no specified minimum number of changes, provided it is running continuously throughout any cargo operation.
30 changes per hour.
20 changes per hour.
How often shall abandon ship- and fire drills take place onboard ro-ro passenger vessels?
Monthly
Weekly
Bi-weekly
At least two abandon ship drills and one fire drill every month
Where should a mid-bay guide be positioned?
At the base of cell guides
On the tank top between two 20’ container bays
Between 20’ container bays on deck
On the tank top at the ends of 40’ container bays
Where will you find the Dangerous Goods List?
In chapter 3.6 of the IMDG Code volume 2
In SOLAS 74/88
In chapter 3.2 of the IMDG Code volume 2
In the Cargo Securing Manual
"From the list below, which is among the recommended actions for a vessel to take, on entering an area known for pirate activity?"
To transit with maximum safe speed
To transit at night time only
To turn off all lights
To confine all ship’s personnel to one room onboard
What type of lubricating oil is generally used for for cylinder lubrication on a large, 2-stroke diesel, main propulsion engine operating on heavy fuel oil?
Mineral based oil with high alkalinity and other additives.
The same oil as the main lubricating oil system
Straight mineral oil.
Synthetic oil.
Loading of a palletised cargo onto a conventional reefer vessel is almost complete. The final pallets are to be loaded into the hatch square pre-slung. Which of the options is the main reason for loading these final pallets pre-slung?
To allow the stevedores at the loading port to complete operations quickly.
To allow a quick start to cargo discharge without damaging any of the cargo.
So that the stevedores at the discharge port know which pallets to unload first.
To allow a tight stow at the completion of loading in the hatch square.
Which kind of cargo pumps are the most commonly used in cargo systems for gas carriers?
Hydraulic driven screw pumps.
Hydraulic driven submerged pumps.
Submerged electric motor pumps.
Electric driven screw pumps.
This circuit shown is a logic gate with two 'high' input signals, A and B, and one output signal Q. Which type of logic function does the gate provide?
OR gate
AND gate
NOR gate
NAND gate
What is a proportional band
Any part of the total amplification
100/amplification
Amplification/10
Amplification/100
A cargo of frozen tuna is being loaded onto a conventional reefer vessel. Without using a pulp thermometer, which of the given options would give an indication that the fish was in good condition.
The surface of the fish would feel hard to the touch.
The fish would sound solid and make a thump sound when dropped.
The surface of the fish would feel cold to the touch.
The fish would sound like wood when dropped or tapped with a hammer.
Very roughly, the gas mixture from Crude Oil can be represented by the pure hydrocarbon gas Propane for analysis and comparison purposes. What then is the approximate Lower Flammable Limit of Crude Oil when measured as a percentage volume in air?
9.5%
0.2%
5%
2.2%
Which food group contains the most calcium per 100 grams of edible product?
Vegetables
Dairy products
Meat
Fish
On a RoRo vessel, what must be ensured so that vehicles are not damaged on the loading ramp?
The ramp angle must not exceed its safe working limit
The ramp surface must be free of oil
Safety signs must be posted at the ramp
One man must always stand-by the ramp
A resistor has three red bands. What is the resistance?
220 ohm
22 ohm
2200 ohm
222 ohm
A seawater pump requires overhaul but there are no spare wear rings for the casing and impeller. It is decided that new wear rings will be fabricated onboard using the ship's lathe. What would be the most suitable material to use to fabricate the rings onboard?
Zinc.
Aluminium brass.
Mild steel.
Aluminium.
How will you find the Tipping Moment of a cargo item?
Transverse accelerations/10 x weight of cargo item x height of its centre of gravity above its base
Transverse accelerations/10 x weight of cargo item x height of its centre of gravity above the keel
Transverse accelerations/7 x weight of cargo item x height of its centre of gravity above its base
Transverse accelerations/7 x vessel's natural roll period
Which of the following insulation materials that are used onboard gas carriers has the highest diffusion resistance?
Mineral wool.
Polyurethane foam.
Perlite.
Air.
For what purpose do we have deck water spray on gas carriers?
There isn’t any deck water spray on gas carriers
The purpose of the deck water spray is to cool deck if fire and to be used for washing deck
All ships carrying flammable cargoes must have deck water spray to flush cargo spill overboard and cool cargo area if fire
The purpose of the deck water spray is to flush cargo spill overboard
During inspection of the fan spaces an access hatch between the delivery and return side of the fan space is inadvertently left open. What would be the most likely consequence of this situaqtion?
Chilled air would short circuit from the return to the delivery air side.
The delivery air side would become overpressurised.
The fan speed would be affected.
Air would short circuit from the delivery to the return air side.
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.
Why should vehicles stowed on ramps face downwards?
To facilitate cargo discharge operations
To facilitate cargo stowage operations
To prevent fuel draining from the engine
To prevent excessive tyre compression
Chemical tankers of 20,000 tonnes DWT or above, with a keel laid on or after 1st July 1986, when carrying flammable products with a flashpoint not exceeding 60 degrees Celsius, such as those listed in chapters 17 and 18 of the International Bulk Chemical Code, are exempt from the requirement to be fitted with and use an inert gas plant provided certain conditions are met. Which of the following is a summary of those conditions?
The cargo tank does not exceed 1250 cubic metres capacity / each tank washing machine nozzle does not exceed 12.5 cubic metres per hour delivery rate / the total wash water input to the tank from all tank washing machines does not exceed 90 cubic metres per hour.
The cargo tank does not exceed 3000 cubic metres capacity / each tank washing machine nozzle does not exceed 17.5 cubic metres per hour delivery rate / the total wash water input to the tank from all tank washing machines does not exceed 110 cubic metres per hour.
The cargo tank is greater than 3000 cubic metres capacity / each tank washing machine nozzle is capable of delivering a minimum of 17.5 cubic metres per hour / the total wash water input to the tank from all tank washing machines must be at least 110 cubic metres per hour.
The cargo tank is greater than 1250 cubic metres capacity / the number of tank washing machines in use at any one time must be such that no more than 17.5 cubic metres per hour is delivered / the minimum quantity of wash water delivered in the washing operation must be greater than 110 cubic metres.
A ship's electrical system operates at 60Hz but when connected to shore supply it is supplied with 50Hz. Which of the following would you expect?
Electric motors will run at increased speed and will tend to overheat.
Generators are more sensitive to reverse power faults.
Electric motors will run at reduced speed and will tend to overheat.
Earth faults are more likely.
This online test consists of 90 random questions from CES 5.1 tests on a topic of your choice.