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Crew Evaluation System CBT test online for seamans about Development of Heavy Weather

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Welcome to the website where you can pass online the CES test on the subject «Development of Heavy Weather». Practice like this will help you as a marine specialist improve your knowledge with the help of online studying and appraisal practice. CES based on practical information and marine specialists experience.

CES tests developed for evaluating seaman basic knowledge by Seagull Company (rebranded as «OTG»), is an evaluating online-tool, used for revealing any professional preparation needed in specific fields of knowledge, defined by STCW.

CES tests have proven themselves as good tools for the selection and recruitment process, as well as advancing the level of knowledge of the current officers and crew. Ocean Technologies Group use various subjects for question creation, which includes:

  • Crowd and Crisis Management;
  • Integrated Navigation System (INS);
  • Ballast water management;
  • Handling and Stowage;
  • Vessel operation management and safety;
  • Marine engineering;
  • Maintenance and repair, etc.

Current test contains Seagull CES questions on the subject «Development of Heavy Weather». Those questions can be used for competence verification specialist capable of preventing accidental situations related with transporting safety, or also for self-examination.

«Development of Heavy Weather» subject includes theoretical and practical information about advanced training for work on any type of vessel. Knowledge of this information directly shows employee’s competence who holds a relevant post on a vessel. Vessel monitoring is an important aspect of maritime operations, particularly when it comes to dealing with heavy weather conditions. When operating in adverse weather conditions, vessels need to be monitored closely to ensure they remain safe and on course. There are a number of different technologies that can be used to monitor vessels during heavy weather. For example, radar systems can be used to detect the position of other vessels in the vicinity, as well as any potential obstacles such as icebergs or rocks. Similarly, GPS tracking systems can be used to determine the precise location of a vessel at any given time, allowing operators to keep track of its movements and ensure it stays on course.

Ultimately, effective vessel monitoring is essential for ensuring the safety of both crew members and the vessel itself, particularly when operating in challenging weather conditions. By using a range of different technologies and techniques, operators can stay informed about their vessel’s position, movements, and condition, and take appropriate action to mitigate any risks that may arise.

On this site Crew Evaluation System Test on the subject «Development of Heavy Weather» contains 86 questions you need to answer with no possibility to go back to previous question. Therefore, we recommend carefully reading each question and making decision with no hurry. In case you have some difficulty answering, you have also possibility to request a hint.

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Start test
“When there is moving water on the deck from breaking waves the force it generates will be insufficient to knock a person over?” Select the best option that comments on this statement:
The statement is incorrect as the force may be sufficient to knock a person over.
The statement is correct as the person’s weight will hold him/her upright.
The statement is incorrect as people will not be on deck with moving water present.
The statement is correct when the person wears boots.
Next question
Which of the given options can be considered a definition of fetch?
The distance which the wind has been blowing over the sea surface.
The distance over the land surface which the wind has been blowing.
The time the wind has been blowing.
The size of the depression causing the wind to blow.
Show result
In temperature latitudes which pressure system is associated with strong wind? Select an option best answering the question:
Low pressure system or cyclone.
High pressure system of great intensity.
Localised winds off the land.
Cols or areas of equal pressure in between low pressure centres.
Next question
Indicate from given options the definition of phase wave period in relation to sea waves:
The time for two successive crests to pass a fixed point.
The time it takes for the wave to travel one mile.
The way that the wave moves relative to the vessel.
The time it takes a crest to pass the vessel.
Next question
Is the following statement true or false? “A rogue wave is usually very steep fronted”.
True.
False.
Next question
Is the following statement true or false? “Some areas of the world are more prone to heavy weather than others”.
True.
False.
Next question
Is the following statement true or false? “Tropical depressions can move across the equator”.
True.
False.
Next question
Is the following statement true or false? “Waves feel the bottom when the depth of water is greater than half the wavelength of the deep water wave”.
True.
False.
Next question
Select FOUR of the given options which lead to a build up of very large waves:
Very strong wind.
Wind blowing for a long time.
Wind meets opposing current.
Water depth becomes shallow for the wave length.
Fetch is very small.
Water depth is much greater than the wave length.
Next question
Select an option that best answers the following question. In low equatorial latitudes which pressure system is associated with extremely strong wind?
A tropical revolving storm.
The Azores High pressure system.
Anabatic and katabatic winds.
The weather associated with the doldrums.
Next question
Select from the following options why very large waves build up in the sea:
It is because all required environment factors are present.
It is only because there is a strong wind.
It is only because of wind against tide effect.
It is only because there is a large fetch.
Next question
Select from the given options a physical definition of a rogue wave:
A wave that has height greater than twice the significant wave height.
One that was not seen but upset the vessel.
A wave that has a length greater than twice the length of the other waves.
A wave found only off the South African coast.
Next question
Select from the given options the best definition of a vessel slamming:
The bow re-entering the water when the vessel is pitching.
The sound that occurs when the vessel has water breaking on deck.
The sound of unhooked doors opening and closing due to violent motion in heavy weather.
The bow being affected by the orbital motion in a wave.
Next question
Select from the given options the one which best completes the following statement: “With a small under keel clearance water force can be”:
Up to four times the deep water value.
Up to six times the deep water value.
The same as the deep water value.
Less than the deep water value.
Next question
Select from the given options the one which correctly completes the following statement: “Wave forces on a berthed vessel are a function of”:
The wave height and the length of vessel.
The wave height only.
The length of vessel only.
The hull surface roughness.
Next question
Select from the given options the statement that best describes how much water force there can be on a vessel compared to wind force:
Water force can be considerably more than wind force on some vessels.
Water force and wind force are usually about the same.
Water force is usually considerably less than wind force on most vessels.
Water force is usually fairly small on a vessel and can be ignored.
Next question
Select from the given options the statement that best describes water force on a vessel:
The force is made up form drag and skin friction.
The force comes only from air drag as the vessel moves through the water.
The force comes only from friction found on the hull surface.
The force is not of great concern with a vessel in a harbour.
Next question
Select from the given options the statement that best describes when wind force is at a maximum value on a normal vessel:
When the wind is abeam or close to the beam.
When the wind is ahead and the vessel is moving.
When the wind is astern and the vessel is moving.
When the wind is gusting up and down.
Next question
Select from the given options the statement that best describes wind on a vessel:
The force is made up from form drag and skin friction.
The force comes only from hull drag.
The force comes only from friction found on surfaces.
The force is not of great concern in an ocean.
Next question
Select from the given options one definition of heavy weather given in this module:
When the wave height exceeds 4 metres.
When the vessel starts to roll.
When the wave height exceeds 2 metres.
When the vessel is in high pressure weather system.
Next question
Select from the given options one of the environmental definitions of heavy weather used in this module:
When the wind strength exceeds force 7 on the Beaufort scale.
When the vessel starts to move in a seaway.
When the wind strength exceeds force 4 on the Beaufort scale.
When the Navtex indicates it with a message from the weather centre.
Next question
Select the option that completes the following statement. “If the wind speed doubles”:
The force on the vessel increases by an approximate factor of four.
The force on the vessel will also double.
The force on the vessel increases by only a small amount.
The force on the vessel increases by an approximate factor of five.
Next question
Select the option which correctly completes the following statement. “Wind waves are classed as gravity waves because”:
Gravity is the restoring force when wind stops.
Gravity causes vertical motion of particles in the wave.
They suffer the effects of gravity making them bigger than the wind would indicate.
Their wave height is bigger than 4 meters.
Next question
Select the option which correctly completes the following statement. “A Beaufort wind force 10 will have a velocity of”:
48-55 knots.
Greater than 64 knots.
22-27 knots.
34-40 knots.
Next question
Select the option which correctly completes the following statement. “A Beaufort wind force 10 will have associated deep water waves of average height”:
9 metres.
Greater than 14 metres.
2-4 metres.
5,5 metres.
Next question
Select the option which correctly completes the following statement. “The Beaufort scale is used to”:
Indicate wind strength.
Measure the pressure value in a depression.
Give some indication of swell height.
Describe the types of cloud cover.
Next question
Select the option which correctly completes the following statement. “The group wave period of a deep water wave explains why”:
There are bigger and smaller waves in the same wave train.
There is a long time between crests.
There are only swell waves visible.
There are only wind waves visible.
Next question
Select the option which correctly completes the following statement. “The strongest winds in a temperature latitude depression often occur”:
Behind the cold front.
In advance of the warm front.
In the warm sector.
In advance of the cold front.
Next question
Select the option which correctly completes the following statement. “Very large waves can be destructive because they have”:
Lots of energy.
Steep sides.
Long wave length.
Short wave length.
Next question
When manoeuvring a vessel in a shallow water tidal area with tugs where should the tugs be positioned? Select the best option:
Where ever the Pilot chooses.
In positions to suit the berth.
In positions to control the water forces.
Centre leads fore and aft.
Next question
Which of the following options best completes the following statement: “A seiche is”:
A wave seen in the tropics from earthquake activity.
A type of wind blowing in Antarctic areas.
The oscillation of water in a harbour.
The oscillation of water in an ocean.
Next question
Which of the following options best completes the following statement: “With waves ahead a vessel with a very fine bow will”:
Pitch heavily on meeting the waves.
Be very dry on deck forward.
Cut through the waves relatively easily.
Be badly affected in heavy weather.
Next question
Which of the following statements best explains why some vessels cope with heavy weather better than others?
Some vessels do not react to wind as much as others.
Some vessels have better reserve stability than others.
Heavy weather effects can be relative to the vessel.
It is totally dependent on the hull shape.
Next question
Which of the given options best completes the following statement in relation to sea waves? The height of a wave is the distance from:
The crest to the midpoint of the wave vertically.
One crest to the next crest.
The crest to the trough vertically.
One trough to the next trough.
Next question
Which of the given options best completes the following statement? A high pressure centre will:
Temporarily raise the sea surface.
Have no effect on the sea surface.
Temporarily depress the sea surface.
Affect the tide raising forces.
Next question
Which of the given options best completes the following statement? A low pressure centre will:
Temporarily depress the sea surface.
Have no effect on the sea surface.
Temporarily raise the sea surface.
Affect the tide raising forces.
Next question
Which of the given options best completes the following statement? The wavelength of a wave is the distance from:
The crest of a wave to the trough.
The crest of a wave to the mid value.
One wave crest to the next wave crest.
The trough of a wave to the crest of the wave horizontally.
Next question
Which of the given options best completes the following statement? Water breaking over the bow of a large vessel with aft accommodation:
Is acceptable in heavy weather as the vessel will be at high speed.
Looks impressive from aft bridge.
May be causing damage not seen immediately by the crew.
Will not impact on the vessel.
Next question
Which of the given options best describes a Tsunami sea wave?
A very short wavelength wave caused by an earthquake.
A wave found in the South Pacific only.
A long wavelength wave caused by an earthquake.
A seismic wave in the earth.
Next question
Which of the given options best describes a cross swell in relation to sea state?
Two swells meeting from opposite directions.
Two swell meeting from the same direction.
Two swells from different directions meeting at a large angle.
A swell found off the island of Malta.
Next question
Which of the given options best describes a katabatic wind?
A wind that blows towards land from the sea.
A wind found only in USA.
A wind that blows from the land towards the sea.
A wind localised to desert areas.
Next question
Which of the given options best describes a tidal storm surge?
Raising of the predicted tide height.
Lowering of the predicted tide height.
Raising or lowering of the predicted tide height.
A sudden increase in the severity of the weather.
Next question
Which of the given options best describes an anabatic wind?
A wind that blows from the land over the sea.
A wind found only in Indonesia.
A wind that blows towards land from the sea.
A wind localised to arctic areas.
Next question
Which of the given options best describes parametric rolling on a vessel?
Very heavy rolling in a beam sea on a container vessel.
Very heavy rolling on a container vessel because of the deck cargo.
Very heavy rolling when ahead or astern waves are encountered.
It is type of rolling that only tankers and bulk carriers suffer from.
Next question
Which of the given options best describes synchronous rolling on a vessel?
When the natural roll period of the vessel is twice the wave period.
It is the motion that occurs when there are very long wavelength gravity waves.
When the natural roll period of the vessel is the same as the wave period.
It is a type of rolling that only container ships suffer from.
Next question
Which of the given options best describes the direction of wind circulation in a tropical storm in the northern hemisphere?
Clockwise when viewed from above.
Clockwise then anticlockwise when crossing the equator.
Anti clockwise when viewed from above.
Anticlockwise then clockwise when crossing the equator.
Next question
Which of the given options best describes the direction of wind circulation in a tropical storm in the southern hemisphere?
Anticlockwise when viewed from above.
Clockwise then anticlockwise when crossing the equator.
Clockwise when viewed from above.
Anticlockwise then clockwise when crossing the equator.
Next question
Which of the given options best describes the location of the world’s Tropical Revolving Storms?
In lower latitudes close to the equator.
In temperature latitudes only.
In lower latitudes across all ocean.
In the western Pacific only.
Next question
Which of the given options best describes the motion of water particles in a deep water wave?
They do not move at all.
They move vertically only.
They have an orbital motion.
They move horizontally only.
Next question
Which of the given options best describes the motion of water particles in a shallow water wave?
They do not move at all.
They move vertically only.
They move horizontally only.
They move horizontally and vertically.
Next question
Which of the given options best describes significant wave height in relation to sea waves?
The wave that causes most damage.
The mean height of all waves.
The mean height of the third largest waves.
The height of a wave measured from crest trough.
Next question
Which of the given options best describes the speed of swell waves?
Short wavelength swell travels faster than long wavelength.
They travel faster in shallow water.
Long wavelength swell travels faster than short wavelength.
They are very slow compared to wind waves.
Next question
Which of the given options best describes the world’s tides?
Tides flow from place to place in sympathy the sun.
Tides are a type of sea gravity wave.
Tides are standing waves in the oceans.
Tides are caused by circulating ocean currents.
Next question
Which of the given options best describes what happens to a wave entering shallow water?
It immediately starts to break.
The wave speeds up causing the sea to flatten.
It feels the bottom and it’s characteristics change.
Nothing happens to the wave but the bottom gets eroded.
Next question
Which of the given options best describes when a large vessel will start rolling in waves?
If the transverse GM is large and there are waves present.
As soon as any waves hit the vessel’s hull.
When there is a wind above Beaufort force 4.
When the encounter angle is near the beam and waves have sufficient force.
Next question
Which of the given options best describes why a vessel may be rolling or pitching when there is no wind?
Cargo is moving on board the vessel.
The wind is gusting up and down in speed.
The vessel’s stability is suspect.
The vessel is suffering swell waves.
Next question
Which of the given options best describes wind against tide effect?
Wind blowing in the same direction as water flow.
Where the wind causes a build up of water increasing the tide height.
Where the wind causes a drop of water height.
Wind blowing in an opposite direction to water flow.
Next question
Which of the given options can be considered a definition of temperature latitudes?
Latitudes between 30 and 70 degrees only in northern hemisphere.
Latitudes between 30 and 70 degrees only in southern hemisphere.
Lattitudes between 0 and 30 degrees close to the equator.
Latitudes between 30 and 70 degrees north and south.
Next question
Which of the given options can be considered correct for the time when a large vessel starts to feel the bottom and have increased drag?
When the depth is less than ten times the draught.
When the depth of water is 1,2 times the draught.
When the under keel clearance is very big.
When the depth becomes less than six times the draught.
Next question
Which of the given options can be considered correct to complete this statement? Breaking water on the deck of a vessel:
Looks impressive as the spray flies.
Is not a major issue as vessels are built to withstand it.
Can be seen as acceptable with a vessel at high speed.
Can impose enormous loads on deck and deck machinery.
Next question
Which of the given options can be considered correct to complete this statement? The bow of an aft accommodation vessel with wind on the beam when moving ahead:
Will probably pay off downwind.
Will not be affected by the wind.
Will be difficult to control.
Will probably seek the wind.
Next question
Which of the given options can be considered the best answer to a definition of the dangerous semi circle in a Tropical Revolving Storm (TRS)?
It is the semicircle where the wind is in the opposite direction to the TRS movement.
It is the northern half of the TRS.
It is the southern half of the TRS.
It is the semicircle where the wind is in the same direction as the TRS movement.
Next question
Which of the given options can be considered the most accurate for this statement? The position of the centre of water pressure will affect how the vessel handles when being berthed:
A correct statement – as a berthing vessel uses the centre of pressure to push on the berth fenders.
An incorrect statement – as a berthing vessel is not affected by moving water.
A correct statement – as a berthing vessel is under tug control at all times.
A correct statement – as a berthing vessel usually has force from moving water on it.
Next question
Which of the given options completes the following statement? A vessel stationary in a harbour on the crest of a standing wave will:
Heave and roll.
Not move at all.
Roll only.
Heave only.
Next question
Which of the given options completes the following statement? On a large container vessel in heavy weather with waves ahead slowing down may:
Not make any difference to the ETA next port.
Increase the likelihood of being pooped.
Increase the likelihood of being broached.
Increase the likelihood of parametric rolling.
Next question
Which of the given options completes the following statement? There is a risk of parametric rolling if:
The natural roll period is half the wave encounter period.
A vessel puts the waves on the beam.
The natural roll period is the same as the wave encounter period.
The natural roll period is twice the wave encounter period.
Next question
Which of the given options correctly describes a standing wave at sea?
When the vessel runs down waves at a faster speed than the waves.
When the vessel runs down waves at a slower speed than the waves.
One that has a steady wave height.
One that moves in the same direction and speed as the vessel.
Next question
Which of the given options correctly describes a standing wave in harbour?
One that has horizontal movement only.
Sea waves entering a harbour.
One that has both vertical and horizontal movement.
One that has vertical movement only.
Next question
Which of the given options correctly describes a vessel being pooped?
When waves break over the vessel’s side.
A condition that exists with the engine after a long sea passage.
When a vessel has water breaking over the bow.
When a wave breaks on the stern of a vessel.
Next question
Which of the given options correctly describes a vessel broaching?
A controlled turn in heavy weather to heave to.
A manoeuvre executed by the Master with manual steering engaged.
Movement similar to parametric rolling that happens on container vessels.
An uncontrolled manoeuvre putting the vessel beam on to waves.
Next question
Which of the given options correctly describes what happens to a vessel’s stability in heavy weather?
Passing waves cause the vessel’s longitudinal GM to change.
Water on deck increases the vessel’s GM values.
There is no change in the vessel’s stability in waves.
Passing waves cause increases and decreases in the vessel’s transverse GM.
Next question
Which of the given options correctly describes why fin stabilisers are sometimes not as effective in heavy weather as in calmer conditions?
There is no difference in their effectiveness in heavy or calm conditions.
In heavy weather they turn more slowly to reduce inertial loads.
The varying depth of water in waves means they work differently to each other.
If the vessels slows down lift from the fin is reduced.
Next question
Which of the given options correctly identifies the speed of a deep water sea waves of 150 metres length and period 10 seconds?
Approximately 10 knots in deep water.
Approximately 100 knots in deep water.
It cannot be calculated because it is a function of wave amplitude.
Approximately 30 knots in deep water.
Next question
Which of the given options is correct for a local name in Australia for a Tropical Revolving Storm?
Silly-billy.
Bonga-wonga.
Hurricane.
Willy-willy.
Next question
Which of the given options is correct for the following question? If the wind force on a vessel is calculated to be 50 tonnes how many 50 tonne tugs will be required with 25 % redundancy to overcome the wind force:
One 50 tonne tug is sufficient.
A minimum of three tugs.
A minimum of four tugs.
A minimum of two tugs.
Next question
Which of the given options is correct for the following statement? Fetch is the important factor in allowing the formation of fully developed waves:
The statement is fully correct as developed waves will always result.
The statement is false as the wind strength determines the wave height.
The statement is false as developed waves will always form.
The statement is only part correct as water depth is also important to wave formation.
Next question
Which of the given options is correct for the following statement? Storms causing heavy weather conditions occur seasonally:
The statement is correct as storms always happen in winter.
The statement is only correct for the North Atlantic.
The statement is only correct for the South Atlantic.
The statement is part correct – it depends upon location.
Next question
Which of the given options is correct for the following statement? Slamming is an acceptable part of being in big waves:
The statement is correct as slamming happens away from the crew accommodation.
The statement is not correct as slamming is noisy keeping the crew awake at nights.
The statement is correct as vessels are built to withstand slamming.
The statement is not correct as slamming can cause major damage.
Next question
Which of the given options is the most accurate in relation to a rogue wave?
It will be proceeded by a flat bit of sea.
There will be a flat bit of sea behind the wave.
The wave height is similar to surrounding waves.
There will often be a large trough before the wave front.
Next question
Which of the given options is the most accurate in relation to the following statement? A vessel when sailing deep sea may not notice a Tsunami wave passing:
As it is a large wave and will always be seen.
Because the wavelength is very short.
As there will be violent motion on the vessel as it passes.
Because of the wave characteristics.
Next question
Which of the given options is the most accurate in relation to the following statement? Synchronous rolling only occurs with beam seas:
It is not correct as quartering seas can produce the same affect.
It is not correct as head waves can produce it.
It is correct because a beam seas is needed to start rolling.
It is correct as a beam sea is always of the correct characteristic to start it.
Next question
Which of the given options is the most accurate in relation to the following statement? Very large waves can be encountered in any sea area regardless of environmental conditions:
Not correct – as environmental conditions have to be right.
Not correct – they are only seen in high latitudes.
Correct – they can occur with or without wind blowing.
Correct – they will always be there because of the group velocity of waves.
Next question
Which of the given options is the most accurately completes the following statement? A category 5 hurricane on the Saffir-Simpson scale is:
A severe tropical storm.
One of the lightest tropical storm.
A moderate tropical cyclone.
A down grading code for a tropical cyclones to a depression.
Next question
Which of the given options is the most accurately completes the following statement? The transverse GM of the vessel:
Has an influence on a vessel rolling in waves.
Has no influence on a vessel rolling in waves.
Has an influence on a vessel pitching in waves.
Has no influence on a vessel pitching in waves.
Next question
Which of the given options is the most accurately completes the following statement? Water on deck of a vessel:
Can increase top weight reducing the vessel’s stability.
Has no affect on the vessel’s stability.
Tends to stay there till the vessel next rolls.
Will temporarily increase the vessels stability.
Next question
Which of the given options best describes swell waves found at sea?
Waves resulting from previous wind or wind in another area.
Waves caused by winds in the same area as the swell is sighted.
Waves from an American registered vessel’s hull.
Waves bigger than sea waves.
Next question
* In some questions may be more, than one right answer.
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Май, 25, 2023 272 0
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