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Questions and answers to Seagull CES CBT test for seamans about Vessel Navigation in Heavy Weather

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Welcome to the website where you can find answers for the CES test on the subject «Heavy Weather Navigation». This site will help you as a marine specialist improve your knowledge with the help of open information, where you can find questions as well as answers for them. CES/CBT 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.

«Heavy Weather Navigation» subject includes theoretical and practical information about safety working with electrical equipment. Knowledge of this information directly shows employee’s competence who holds a relevant post on a vessel. When navigating in heavy weather, officers on a vessel should prioritize safety and be well-informed about the current and forecasted weather conditions. They must understand the vessel’s stability limits, adjust speed and course accordingly, and maintain effective communication with relevant authorities. Regular watchkeeping, inspections for seaworthiness, emergency preparedness, and risk assessment are essential. Additionally, having alternative routes and safe havens in mind, along with maintaining accurate records, ensures a proactive approach to handling challenging weather situations.

This page contains answers to Seagull CES (Crew Evaluation System) test about Heavy Weather Navigation, and serve as a database of questions and answers, using which seafarer can prepare to exams for getting certificate of competence, or just to challenge yourself with knowledge in this theme.



CBT CD 0242 – Heavy Weather Navigation.pdf

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Amount of questions: 78.

Right answers marked with this sign .

IMO Resolution A.950 (23) requires coastal states to provide a Maritime Assistance Service. Which one of the given options best describes the reason for this?
To monitor a disabled vessel and be a point of contact.
To lead a salvage operation on a disabled vessel.
To help ship owners get through their legislation.
It is a requirement making the VTS operation assist the disabled vessel.
Is the following statement true or false? Optimum weather routing avoids bad weather systems altogether:
True.
False.
Select from the following options the reason why it is important to have adequate reserve stability on a vessel when approaching an area of heavy weather:
It is because heavy weather conditions vary the initial stability.
It is because heavy weather conditions permanently change the initial stability.
It is because IMO regulations require this for heavy weather.
It is because strong wind causes large heeling moments.
Select from the given options the best reason why, in heavy weather, greater under keel clearance should be allowed on a passage in coastal waters:
Vessel motion causes potentially large reductions in clearance values.
Squat values are greater as a vessel maintains higher speed.
The vessel’s propeller needs more water to have efficient propulsion.
As waves pass they reduce the depth of water so the vessel bodily sinks.
Select from given options the most accurate definition of bulk cargo liquefaction:
When a bulk cargo starts to behave like a liquid.
When a bulk cargo changes to a liquid.
It is a process used to discharge the product quickly using suction.
It is when the cargo gets wet from sweat due to poor ventilation.
Select from the given options the one that best describes how land can be used to best navigational advantage whilst on a coastal passage in heavy weather:
Land will afford some shelter if relatively close and upwind.
Best navigational advantage is to stay away from it as it is dangerous.
Land will afford some shelter if relatively close and downwind.
Use it to take lots of visual fixes as it will be prominent.
Select from the given options the one where information on heavy weather procedures would most likely be found on board a vessel:
In the vessel’s safety management system.
In the vessel’s official log book.
In the Admiralty List of Radio Signal.
Printed on the chart where heavy weather is likely to be found.
Select from the given options the statement that best describes a major consideration for ensuring that a vessel has adequate under keel clearance during a coastal passage in heavy weather:
That a negative storm surge will reduce the predicted water depth.
That a negative storm surge will increase the predicted water depth.
The clearance should be the normal minimum as per Company instructions to load a full cargo.
There should always be a 50 % increase in normal clearance in such conditions.
Select from the given options the statement that best describes the location in which anchors should be secured:
In a location safe for the deck crew.
In a location outside port limits.
At the pilot station when the pilot is clear.
In a location as directed by Company procedures.
Select from the given options the statement that best describes why heavy weather environmental forces are greater when a vessel sails from harbour:
The environmental forces are greater as shelter from land is reduced.
The environmental forces are greater because water gets deeper.
Environmental forces are greater because the vessel has greater speed.
Environmental forces are greater because tug assistance and control has gone.
Select from the given options the type of information found in section B10 of the Bridge Procedures Guide:
Heavy weather or tropical storm check list.
Pre departure check list without pilot.
Pre arrival check list for pilot boarding.
Information on where to find a weather forecast.
Select from the given options which best completes the following statement. After a prolonged period of heavy weather in a shallow sea areas:
Charted depth may have changed.
Charted depth will definitely be the same.
Sand waves will be formed of great magnitude.
Pilotage will be suspended.
Select the option which correctly completes the following statement. If GMDSS equipment is logged into one Inmarsat satellite storm warnings broadcast from another satellite will:
Be received if the message is classed as distress or urgency.
Be missed as the equipment does not listen to the other satellite.
Be received but stored till the equipment is switched to that satellite.
Be missed as the broadcast will not be relevant to the area the vessel is located.
Select the option which correctly completes the following statement. Information broadcast using NAVTEX is an example of:
A safety information broadcast set up under SOLAS for all vessels.
A commercialy owned broadcaster sending out weather information.
Messages that can be received in Australia.
A safety information broadcast set up under EU directives.
Select the option which correctly completes the following statement. On a tanker save all drains should:
Be open in heavy weather.
Always be closed in heavy weather.
Be sealed with wooden plugs in heavy weather.
Be checked once a watch in heavy weather.
Select the option which correctly completes the following statement. The World Wide Navigation Warning Service offers storm warnings in:
All sea areas.
NAVAREAS 1 to 6 only.
Coastal areas only.
High seas areas only.
Select the option which correctly completes the following statement. To ensure all personnel are safe during periods of extreme vessel motion:
Rig safety lines and use personal harnesses in exposed places.
Tell crewmen to restrict their movements on the vessel staying in their cabins.
Act normally and wear a safety harness at all times.
Do not go on the vessel’s main deck under any circumstances.
Select the option which correctly completes the following statement. When navigating around the shores of Australia weather information is received via:
The SafetyNet system.
The NAVTEX receiver.
The Internet as there is no NAVTEX there.
Coast radio stations only.
Under SOLAS requirements which one of the given options best describes the action a vessel’s Master’s should take if they suspect a tropical storm is developing in the vessel’s vicinity?
Report it to other vessels and the nearest competent authority.
Record the weather particulars in the deck log book and inform the company.
Record the weather particulars every hour and monitor situation.
Record the weather at the end of the navigational watch as normal.
Under SOLAS requirements which one of the given options best describes the action a vessel’s Master’s should take if they suspect a tropical storm is developing in the vessel’s vicinity?
Report it to other vessels and the nearest competent authority.
Record the weather particulars in the deck log book and inform the company.
Record the weather particulars every hour and monitor situation.
Record the weather at the end of the navigational watch as normal.
When a forecast of heavy weather is received who should be informed immediately?
The vessel’s master and crew members.
Other vessels in the area.
The designated person ashore.
The Chief Engineer.
Which of the following options best completes the following statement? A storm warning is broadcast when:
Winds are forecast to be Beaufort force 10 within the next 24 hours.
Winds are forecast to be Beaufort force 10 for the next 24 hours.
Winds are forecast to be Beaufort force 11 within the next 24 hours.
Winds are forecast to be Beaufort force 8 for the next 24 hours.
Which of the following options best completes the following statement? A storm warning is broadcast when:
Winds are forecast to be Beaufort force 10 within the next 24 hours.
Winds are forecast to be Beaufort force 10 for the next 24 hours.
Winds are forecast to be Beaufort force 11 within the next 24 hours.
Winds are forecast to be Beaufort force 8 for the next 24 hours.
Which of the given options best completes the following statement? In a strong beam wind a vessel with a large wind area will sweep a path:
Of much greater size than the beam of the vessel.
The same size as the beam of the vessel.
The same size as the length of the vessel.
As big as the attached tugs allow.
Which of the given options best describes the actions to be taken on exposed decks before the onset of heavy weather?
Vulnerable openings should be checked making sure they are closed.
Vent flaps should be shut down on all decks.
Save all drains on a tanker should be closed.
Scuppers should be plugged to stop water coming up them.
Which of the given options best describes the main cause of bulk cargoes movement in a cargo space which has water tight integrity on a vessel that is at sea in heavy weather?
They can slide under the force of gravity due to severe motion.
Movement is caused by liquefaction due to water ingress.
Ship sweat due to lack of ventilation makes decks slippery for the cargo.
Torsional stresses in the hull change the shape of the holds.
Which of the given options best describes the main precaution necessary with bulk cargoes on a vessel approaching heavy weather?
Ensure that the cargo will not shift with motion.
Send crewmen into the holds to trim the cargo.
Check the cargo temperature.
Shut down the cargo space ventilation system to stop cargo sweat.
Which of the given options best describes the use of company procedures by the vessel’s officers?
They assist memory and ensure preparedness of the vessel.
They are an extra part of the job without much use.
They assist personnel who have little knowledge of a subject.
They are sets of instructions explaining what the company does.
Which of the given options best describes what happens on a vessel, which has a lot of weight in the bow area, meeting waves head on?
The vessel will tend to plough into them.
The vessel’s bow will very quickly rise over the wave.
The vessel will be very dry on the forward deck.
The vessel will start parametric rolling.
Which of the given options best describes why a vessel is more difficult to control in heavy weather?
There are large environmental forces acting on it.
Because the engine delivers less power.
Wind force on the bow blows it down wind making steering more difficult.
Side tunnel thrusters work less effectively in strong winds.
Which of the given options can be considered the best immediate action on a vessel with a structural problem in heavy weather?
Set a course and speed to stop any further damage.
Contact the designated person ashore.
Send out a distress message on the GMDSS equipment.
Start the bilge pumps drawing from all parts of the vessel.
Which of the given options can be considered the most accurate in relation to the following statement? A vessel has to suffer heavy weather effects on a voyage across an ocean:
An incorrect statement as there are usually several options open to avoid suffering the effects.
A correct statement if heavy weather lies on the vessel’s planned track.
An incorrect statement as a vessel will always slow down in heavy weather.
An incorrect statement as a vessel will always change course in heavy weather.
Which of the given options correctly completes the following statement? Before a vessel enters a safe haven a:
Responsible state will want full information relating to a vessel and the cargo it is carrying.
Vessel has to discharge all ballast.
Company representative will have to agree to this happening.
It has to be gas free if it is an oil tanker.
Which of the given options correctly completes the following statement? IMO resolution 949 (23) could be useful to a vessel in heavy weather, because:
It requires member states to provide potential places of refuge.
It requires salvage tugs to be positioned in exposed places.
It requires coastal states to issue weather forecasts and storm warnings.
It informs the Master of best possible actions to weather route the vessel.
Which of the given options correctly describes the composition of environmental forces on a vessel:
Environmental forces are made up of wind, water and wave forces.
Environmental forces are made up of wind force only.
Environmental forces are made up of water force only.
Environmental forces are made up of interaction forces from the sea floor caused by small under keel clearance.
Which of the given options describes possible action that needs to be taken on board a vessel with a dragging anchor, in strong wind, to make it hold?
Pay more chain out.
Shorten the chain.
Tighten up the windlass brake.
Make sure the bow stopper is on.
Which of the given options is correct for the number of NAVAREAs or METAREAS in the world?
21.
16.
24.
18.
Which of the given options is the most accurate in relation to the following statement? A vessel with structural problems has an automatic right to go to any safe haven.
An incorrect statement as the requested country has to grant permission.
An incorrect statement as countries do not want damaged vessels in their areas.
A correct statement to maintain safety of life on board the vessel.
A correct statement to maintain safety of the vessel.
Which of the given options is the most accurate in relation to the following statement? As the engine room is lower down in the vessel, and is therefore less affected by the vessel’s motion, tools required for a work task can be left near the work area during heavy weather.
The statement is incorrect as tools will still move around.
The statement is correct.
The statement is correct as long as the tools are in a rubber bucket that will not slide.
The statement is incorrect as motion is more violent in the engine room.
Which of the given options is the most accurate in relation to the following statement? If heavy weather conditions are expected, the Master should have navigational contingency plans.
This is a correct statement as there may be unforeseen happenings.
This is an incorrect statement as the vessel will always follow the original plan.
This is a correct statement as SOLAS require this.
This is an incorrect statement as the vessel should never get into heavy weather conditions.
Which of the given options is the most accurate in relation to the following statement? In heavy weather the vessel’s navigation can have errors caused by:
Vessel motion affecting GPS position calculation.
A proper lookout not being maintained under the prevailing conditions.
Errors caused by strong wind effecting GPS radio signals.
Radar horizon being reduced by sub refraction.
Which of the given options is the most accurate in relation to the following statement? The galley on a vessel is just another living space in heavy weather:
The statement is incorrect as it is more dangerous due to their being hot items in the galley.
The statement is incorrect as the galley is a place no crew member should enter.
The statement is correct no matter what the weather conditions are.
The statement is correct as it is a place to get warm on a cold, heavy weather day.
Which of the given options is the most accurate in relation to the following statement? When a vessel is weather routed all routing communications are from the service provider to the vessel only.
This is an incorrect statement as the vessel also has to relay regular position information back to the service provider.
This is a correct statement as the service is paid for and all inclusive to the vessel.
This is an incorrect statement as the vessel is required to send weather observations.
This is a correct statement as the vessel only has to take instructions.
Which of the given options is the most accurate in relation to the following statement? With a heavy weather forecast the vessel should be checked for water tight integrity.
It is a correct statement.
It is an incorrect statement as a vessel will always have water tight integrity.
It is a partly correct statement as it only applies when a vessel is in open water.
An incorrect statement.
Which of the given options is the most accurate in relation to the following statement? With strong winds blowing in a port area delay sailing until they subside.
It is an incorrect statement, in each situation the environmental forces should be assessed and a decision made based on the assessment.
It is an incorrect statement, a vessel always has to sail to clear the berth irrespective of environmental conditions.
It is a correct statement because the wind gives more difficulty when navigating.
It is a correct statement as there will be violent motion on the vessel if it sails in strong winds.
Which one of the following options best completes the following statement? A vessel lying to a single anchor in a strong wind will drag the anchor if:
There is not enough chain out.
The anchor is snagged on the sea floor.
The wind changes direction.
The engine is turning dead slow ahead.
Which one of the following options best completes the following statement? The two types of weather routing are:
Optimum weather routing and voyage optimisation.
Optimum weather routing and voyage minimisation.
Minimum weather routing and voyage optimisation.
Maximum weather routing and voyage optimisation.
Which one of the following options best completes the following statement? Voyage optimisation software used:
Feedback from vessel sensors to enable setting of course and speed.
Feedback from the weather forecast to enable setting of course and speed.
Only a vessel’s manoeuvring parameters to set course and speed.
A UNIX based computer software system.
Which one of the following options best completes the following statement? Water ingress to void spaces on a vessel causes:
A free surface effect reducing the vessel’s GM.
The vessel no problem as it is automatically pumped out.
The GM to increase making the vessel more stable.
A resulting trim by the vessel’s head.
Which one of the following options best completes the following statement? In storm force winds the Master must:
Report them to other vessels and the nearest competent authority if the conditions have not been forecast.
Question the Coast Radio station as to why there was no warning.
Send a message to the nearest competent authority only.
Report them to other vessels and the port state where the vessel is registered.
Which one of the following statements best explains the meaning of term weather routing?
This is when a vessel is guided away from bad weather.
This is a vessel’s route when blown off course in strong wind.
This is when a vessel has a route laid into a bad weather area.
This is a route set on a passenger vessel in a sunny area.
Which one of the given options best completes the following statement? Cargo lashings should:
Be checked before and regularly during heavy weather.
Be checked before heavy weather only.
Be checked on deck cargo only before heavy weather.
Be checked only on cargo in holds that cannot be seen from the bridge before heavy weather.
Which one of the given options best completes the following statement? Weight distribution on a vessel in large waves is important because:
Vessel movement is influenced by weight distribution when meeting waves.
The motion of the vessel may cause weights in the middle of the vessel to move.
Stability is affected with large amounts of weight in the bow area.
It influences how the vessel is able to be manoeuvred.
Which one of the given options best describes an Emergency Response Service offered by a classification society?
A service direct to their registered vessels to assist during emergencies.
A service offered by them through the flag state to help during emergencies.
An emergency service for a vessel in distress.
An emergency service to assist oil tankers only.
Which one of the given options best describes how a vessel in ballast is most likely to react when anchored in good holding ground when there is a strong wind blowing?
The vessel can range from port to starboard across the cable direction.
The vessel will sit quietly downwind of the anchor.
The vessel will start to drag the anchor.
The vessel will be rolling heavily because of the anchor force.
Which one of the given options best describes how bow anchors on a vessel should be prepared for heavy weather conditions?
They should be hove tight and have extra lashings applied.
They should be hove tight and have the windlass brake applied.
The chains should be lashed together below the spurling pipe.
The windlass should be left in gear with the brake on.
Which one of the given options best describes one of the actions to be taken on the deck of a vessel before heavy weather?
All items of portable equipment should be properly stowed away.
All items of portable equipment should be lashed in place on deck.
Heavy items of portable equipment are best left behind a deck house.
Only light portable items need to be removed as might float off the deck.
Which one of the given options best describes the action to be taken by the bridge team if the main engine is totally disabled in heavy weather with a close by lee shore?
Call for tug assistance and drop both anchors.
Call for tug assistance.
Drop the port anchor in the northern hemisphere.
Drop the starboard anchor in the southern hemisphere.
Which one of the given options best describes the action to be taken by the bridge team if the main engine stops in heavy weather?
Start up any thrusters to maintain heading.
Call the engine room to find out why it has stopped.
Start rudder cycling to slow the vessel down.
Get the crew forward quickly to take off anchor lashings.
Which one of the given options best describes the action to be taken by the engine room staff if the main steering system fails in heavy weather?
Ensure the auxiliary system is available for immediate use.
Call the Chief Engineer to sort out the problem while the watch engineer looks after the engine.
Send the Motorman to the steering flat to investigate.
Call the bridge and ask them what has happened.
Which one of the given options best describes the function of a commercial weather routing company?
They are in business to route vessels away from bad weather.
They are in business to forecast the weather.
They function because of IMO requirements.
Their function is to supply vessels with completed passage plans.
Which one of the given options best describes the immediate action to be taken by the Watch Engineer if the main engine stops in heavy weather?
Assess the reason for it stopping and restart it as soon as possible.
Call the Chief Engineer to the engine room.
Restart the engine immediately as it is essential for control of the vessel.
Run a diagnostic check using the engine management system.
Which one of the given options best describes the operation of making fast a salvage tug to a vessel in open water in heavy weather conditions?
It is a very high risk operation where safeguards need to be in place to protect personnel.
It is very similar to making fast a tug in harbour except the tug will be bigger.
It is a very high risk operation that should never be attempted.
It is a low risk operation simply requiring the tow line to be heaved on board.
Which one of the given options best describes the risk factor of being on a vessel’s exposed main deck in heavy weather?
It is a very dangerous place.
It is safe being well protected from the sea.
There is a possibility of flying spray.
It is safe because of the vessel’s freeboard.
Which one of the given options best describes the vents on a vessel that should be closed before the onset of heavy weather?
Fore deck vents into chain lockers, stores and void spaces particularly.
All deck accommodation vents into living spaces.
Engine room vents should have the flaps closed.
Tank vents should be plugged along the whole length of the vessel.
Which one of the given options best describes vessel motion prediction software?
Software that predicts vessel movement for forecast weather conditions.
Software that records vessel movement for cargo insurance claims in bad weather.
Software that can be used to predict movement of the vessel if ballast is taken.
Software that is used for stability calculations.
Which one of the given options best describes what happens to a vessel with a very light bow area meeting waves head on?
The vessel’s bow will very quickly rise over the wave.
The vessel will tend to plough into waves.
There will be a lot of water on deck forward.
The vessel will be greatly slowed down when the wave hits.
Which one of the given options best describes why water ingress forward can endanger a vessel?
The added weight reduces the vessel’s freeboard.
Because the added weight can cause the main engine to deliver less power.
Unwanted water on board affects rudder control hence steering capability.
Unwanted water adds to forward weight increases the likelihood of slamming.
Which one of the given options best explains how to use a salvage tug to help a vessel in heavy weather when the vessel has a disabled steering system but an operational main engine?
Attach the tug to the after part of the vessel and use it to steer.
Always attach a salvage tug to the bow of the vessel on the Smit bracket.
Attach the vessel to the bow on a very short lead to help steering.
Lash the tug alongside to act like a thruster and steer the vessel.
Which one of the given options can be considered correct for the meaning of the term a wind driven current?
A current set up after prolonged period of wind on the sea surface.
A current set up by wind, running below the water surface against the wind.
An ocean current opposing the wind direction making for steep waves.
A current found only in monsoon areas.
Which one of the given options can be considered correct to complete the following statement? In heavy weather only go on exposed decks if:
All safety precautions have been completed.
The line manager has been informed.
Wearing waterproof clothing.
The vessel is not taking water over them.
Which one of the given options can be considered correct to complete the following statement? When avoiding a tropical revolving storm the safe semicircle has the wind:
Astern or near astern.
Ahead or nearly ahead.
On the port beam in the northern hemisphere.
On the starboard beam in the southern hemisphere.
Which one of the given options can be considered the best secondary action on a vessel with a structural problem in heavy weather?
Risk assess the damage before deciding on any further course of action.
Request that the nearest coastguard arrange for the crew to be taken off the vessel.
Send out an urgency message on the GMDSS equipment.
Attempt a repair to the damaged structure.
Which one of the given options correctly completes the following statement? Tugs working a vessel in heavy weather conditions:
Are not as effective as in normal conditions.
Are just as effective as in normal conditions.
Will never make fast for fear of parting the tow line.
Only make fast on the lee side of the vessel.
Which one of the given options correctly describes a meteorological related tidal storm surge?
A time when tides are higher or lower than predicted.
Only a time when tides are lower than predicted.
Only a time when tides are higher than predicted.
A time with increased tidal currents because of the tide raising forces.
Which one of the given options describes the main action that should be taken to control the effects of heavy weather on a vessel moving in a port area?
Risk assess considering environmental forces on the vessel.
Hand over the vessel to the harbour pilot as he knows best.
Take extra tugs if the company allow it.
Double up the mooring lines.
Which one of the given options explains what should happen with the vessel’s mooring ropes before entering an area of heavy weather?
Stow them off deck in a locker or storeroom.
Make sure they are well lashed on pallets on deck.
Stow them behind a deck house clear of possible deck water.
Turn them up on the bits with the ends lashed.
When a tropical storm is in the path of a vessel the best action is to keep going and pass through it. Select the best option that comments on this statement:
Statement is incorrect as this could be very dangerous.
Statement is correct as there will be no other option if it is on the planned route.
Statement is correct as the storm would probably have cleared by the time the vessel got there.
Statement is correct as the voyage charter would be breached if the vessel altered course.



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