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Главная Онлайн-тесты CES Все типы судов 2nd-Off / 3rd-Off Test for Officers onboard about Navigation, Operational Level (CES v6.0)
Онлайн-тестирование: Test for Officers onboard about Navigation, Operational Level (CES v6.0)
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Тест состоит из 80 случайных вопросов.
Всего вопросов по данной теме: 209
Всего вопросов по данной теме: 209
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Why should a Ground Stabilised True Motion radar display not be used for anti-collision purposes?
True motion does not provide the collision risk of targets as only true vectors are available.
The true vector can never give an indication of collision risk with another ship.
The “aspect” of the target is confused, so the Regulations for Preventing Collisions cannot be accurately applied.
Because this display is only ever used for navigation.
The gyro compass can suffer from a compass error and may need to be allowed for, when steering a course in a dangerous navigational area. What is the probable cause of the error?
Fluctuations in the electrical supply to the compass.
Compass Deviation.
An uncorrected course and speed error.
Variation.
If a DSC distress alert is received on board your ship, what is the first action that should be taken?
Immediately answer the distress message on the correct radio frequency.
Determine how close your vessel is to the distressed vessel.
Contact SAR Authorities via nearest coast Radio station.
Listen for a distress message on the appropriate radio frequency for five minutes.
What radar device assists in the detection and location of a survival craft?
EPIRB beacon.
A personal locator beacon.
SART beacon.
AIS beacon.
This vessel is encountered at the mouth of a river. According to the International Regulations for Preventing Collisions and the illustrated shapes, what type of vessel is it?
This is a vessel engaged in dredging or underwater operations. The two balls in a vertical line indicate the side on which an obstruction exists; the two diamonds in a vertical line indicate the side on which it is safe to pass; the ball/diamond/ ball in a vertical line indicate that the vessel is restricted in her ability to manoeuvre.
This is a vessel engaged in dredging or underwater operations. The two balls in a vertical line indicate the side on which it is safe to pass; the two diamonds in a vertical line indicate the side on which an obstruction exists; the ball/diamond/ball indicate that the vessel is restricted in her ability to manoeuvre.
The Second Officer, when on watch on the bridge, is often referred to as the OOW. What does OOW actually stand for?
Officer of the Watch.
Operator of the watch.
On official watch.
On official watchkeeping.
What would be considered the most favourable heading of a ship when launching a lifeboat?
The ship should steer about 100° of the prevailing weather and sea with the boat to be launched on the leeside.
The ship should lie stopped in the water with the weather on the opposite side to the boat to be launched.
The ship should steer about 30° off the prevailing weather and sea with the boat to be launch on the leeside.
The ship should steer with the prevailing weather and sea on the beam and the boat to be launch on the leeside.
You are proceeding up a river, with berths on both banks. You see this flag hoist on a vessel moored on a berth ahead. What does it mean?
You should proceed at slow speed when passing me.
I am about to depart the berth.
My engine is disabled.
Caution! I have an anchor down.
What would be the effects of a ship passing into shallow water?
The vessel has a tendency to swing to port with a single fixed-pitch right-hand turning propeller.
The ship is less responsive to both rudder and propeller.
There is no noticeable difference in performance of the ship.
The speed is not affected, but more rudder is required to steer the ship.
What are the three possible types of messages seen when there is an ECDIS alert?
Either an Alarm, an Indication or a Caution.
Either an Alarm, a Warning or an Information.
Either an Alarm, a Warning or a Caution.
Either an Alarm, an Indication or a Caution.
A ship is navigating in the Caribbean in August when it receives the warning of a Hurricane. To determine the centre of the storm the Master uses “Buys Ballot’s Law” and faces the wind. On what side of the Master would the low pressure area be located?
On the right side.
This is not a suitable method to use with a Hurricane.
Straight ahead.
On the left side.
Which is the “CENTRE LINE”, in the figure?
The Fore and aft Centreline is indicated by D, in the figure.
The Fore and aft Centreline is indicated by A, in the figure.
The Fore and aft Centreline is indicated by C, in the figure.
The Fore and aft Centreline is indicated by B, in the figure.
With a pilot ladder, the lowest spreader shall be the 5th step from the bottom. At what interval should there be further spreaders upwards on the ladder?
At intervals not exceeding 9 steps.
At intervals not exceeding 12 steps.
It does not matter where the spreaders are fitted.
At intervals not exceeding 15 steps.
Which of the following answers correctly specify the following most common rudders? a) UNBALANCED, b) BALANCED, c) SEMI-BALANCED and d) UNDERHUNG BALANCED. i. e. The number in the picture is related to the letter adjacent to the name of the rudder.
1 = d, 2 = a, 3 = b and 4 = c.
1 = b, 2 = c, 3 = d and 4 = a.
1 = c, 2 = d, 3 = a and 4 = b.
1 = a, 2 = b, 3 = c and 4 = d.
You are in an area of restricted visibility and hear this signal. It is repeated at 2 minutes intervals. What does it indicate?
That there is another vessel in the vicinity and that she has just altered course to port.
That there is another vessel nearby, that she is underway, but stopped and making no way through the water.
That there are two more vessels nearby.
That there is another vessel nearby, but that she is at anchor.
What does this flag mean?
I wish to communicate with you.
My vessel is stopped and making no way through the water.
I have a diver down; keep well clear at slow speed.
Yes (affirmative).
You are on a tug and are towing an unmanned barge. You are restricted in your ability to manoeuvre. The total length of the tow is 219 metres. What daylight signals are required by the International Regulations for Preventing Collisions at Sea?
A diamond shape, where it can best be seen, on the tug only. Three shapes shall also be displayed, being three balls in a vertical line.
Three shapes shall be displayed on the tug, where they can best be seen, in a vertical line, the upper and lower being balls and the middle one a cylinder. The signal flag “T” shall also be flown on the tug. A diamond shall be displayed aft on the tow.
A diamond shape, where it can best be seen shall be displayed on the tug and the tow. Three shapes shall also be displayed in a vertical line, the upper and lower being balls and the middle one a diamond. Diamond shape.
Three shapes shall be displayed forward on the tug, in a vertical line, the upper and lower being balls and the middle one a diamond.
Which of the answers best summarises the information which should be provided for the bridge Officer of the Watch within an effective Voyage plan?
Contingency arrangements in case of problems.
Expected prevailing wind and weather.
Courses to steer; distance off dangers; parallel index lines; expected currents; prevailing winds; distance between alteration points.
All of the suggested answers.
When navigating along a coastline what should be considered the most accurate method of navigating?
Passing close to navigational buoys.
Use of radar ranges and bearings.
Bearings of navigational shore marks such as lighthouses.
Use of Differential GPS.
The position of the ship provided by the GPS should always be confirmed by other means, when possible. Which of the following suggested methods would be the most accurate?
Compass bearings of three shore objects.
Bearing using the Radio Direction Finding of three radio beacons.
The ranges of three distinctive shore objects on the radar.
Bearing and distance from a navigational Buoy.
What do the shapes that this vessel is displaying tell us about her?
That she is engaged in towing.
That she is not under command.
That she is restricted in her ability to manoeuvre.
That she is constrained by her draught.
You are proceeding along a coastal route when you hear this signal. The visibility is severely restricted. What does the signal mean?
There is a vessel at anchor in the vicinity. She is less than 100 metres in length. She is sounding an additional warning to approaching vessels that they are “running into danger”.
There is a vessel aground in the vicinity. She is more than 100 metres in length. She is sounding an additional warning to approaching vessels, directing them to “keep clear”.
There is a vessel aground in the vicinity. She is more than 100 metres in length. She is sounding an additional warning to approaching vessels that they are “running into danger”.
There is a vessel aground in the vicinity. She is less than 100 metres in length. She is sounding an additional warning to approaching vessels to “navigate with extreme caution”.
What is the correct understanding of the term “a ship with good Directional Stability”?
A ship which when the rudder is left amidships, it will continue on approximately a straight course.
A ship where the amount of positive transverse stability (GM) will vary with the direction of the ship’s head.
A ship which when a rudder angle is applied and the ship starts to swing, will continue to swing even after the rudder is returned to amidships.
A ship which will maintain its course unless large rudder angles are applied.
This vessel is sighted ahead and slightly to port. What is her situation? What will you do?
This is a vessel engaged in fishing vessel, with her nets fast on a obstruction. I will keep out of the way by rule 18 of the International Collision Regulations.
This is a vessel not under command at anchor.
This is a vessel aground. She appears to have been headed to starboard of my track and I will therefore alter course to port, passing under her stern.
This vessel is aground. I will navigate with extreme caution given the nature of the hazard.
Why should Ground Stabilised True Motion display mode be avoided when using the ARPA for anti-collision purposes?
The Relative Motion display and relative vectors is the only display to use for anti-collision purposes.
The true vector can never give an indication of collision risk with another ship.
The collision regulations are based on ship courses through the water.
True motion does not provide the collision risk of other ships.
What is the two letter signal, to be used by flags, radiotelephony or radiotelegraphy, meaning “Calling All Ships”?
CQ.
TT.
CA.
AS.
If whistles are fitted on a vessel at a distance apart of more than 100 metres, will manoeuvring and warning signals, as defined by rule 34 of the International regulations for Preventing Collisions at Sea, be given on one or both whistles?
Manoeuvring signals will be given only on the forward whistle; warning signals will be given on both whistles simultaneously.
They shall first be given on the forward whistle, followed by the after whistle, with a 5 second interval in between.
They shall be given on one whistle only.
They shall be given on both whistles simultaneously.
The ship is drifting in the open sea with a temporary engine breakdown. The ship is equipped with GPS navigation equipment. What should the bridge Officer of the Watch do in this situation?
Keep a good lookout for other ships.
Display the “Not under Command” signal and switch off the normal steaming lights.
All of the possible answers.
Plot the direction and rate of drift and predict the ships position for the period while the ship is “Not Under Command”.
Once a ship (equipped with self-stowing auto-tension winches) is moored alongside a loading or discharging berth, how is it recommended that the winches are set?
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.
All winches to be left with the manual brake on and out of gear.
All mooring winches be left in “auto-tension” mode.
The tug has been released and is all clear. As officer in charge of that operation, should this be reported and to whom?
Reported all clear to the Bridge.
No need for reporting as the order was given from the bridge.
Report all clear to the tug.
Report all clear to the Engine Room.
A balanced rudder has some of the rudder area forward of the rudder axis. About how much area should this be to call it a balanced rudder?
It should be about 20 %.
It should be about 50 %.
It should be about 55 %.
It should be about 5 %.
Which option best completes the following statement? An operator using ECDIS, will notice an out of position navigation buoy because:
A local port authority would send an automatic signal to ECDIS.
It is coloured orange on an ECDIS display.
The radar return and ENC buoy symbol will not coincide.
There will be a flashing alarm on ECDIS showing which one is out.
Which type of vessel suffers from the greatest squat effects?
Vessel with a low Block Coefficient.
Vessel with a high Block Coefficient.
Vessel with a small length to beam ratio.
Vessel with a large length to beam ratio.
The bridge Officer of the Watch (OOW) is plotting the ship’s position in the chartroom, when the ship is in collision with a fishing vessel. Why would the OOW be held responsible for the collision?
Under the Rules a proper lookout should be maintained at all times and by all available means.
If the OOW is busy with the safe navigation of the ship he should have exhibited the “Not under Command” signals and made other ships keep clear.
If risk of Collision existed, the fishing boat should have contacted the larger ship over the VHF before the collision took place.
Under the Rules the fishing vessel should have kept clear of larger vessels and the OOW would not be responsible.
What is the correct understanding of the term “Block Coefficient” as applied to a ship?
The coefficient of a Block and Tackle.
The restriction of a valve in a pipe to the flow of fluid through that pipe.
The comparisons of the underwater shape of the ship, to a rectangular block of the same extreme dimensions.
The ratio of the waterplane shape of the ship to a rectangle of the same extreme dimensions.
What are the limits of a passage or voyage plan?
From Full Away On Passage (FAOP) to End Of Passage (EOP).
From pilot to pilot.
It is dependant on the voyage and if there are any river or canal transits.
From berth to berth.
If a mooring winch brake tension is set to 60 tons, the setting has a safely allowance, what would be the maximum breaking load (MBL) of a wire used on the winch?
61 tons.
100 tons.
40 tons.
80 tons.
The ship is sailing in shallow water with reduced Under Keel Clearance. If the ship is steaming with the engines at full RPM, what would be the speed in comparison to the speed achieved in deep water?
Slower than deep water.
It would be very difficult to maintain full deep sea RPM on the engines and therefore difficult to assess the speed.
Faster than deep water.
The same as deep water.
The Master arrives on the bridge obviously under the influence of alcohol and states he is taking over the “con” of the ship. What actions should the Officer of the Watch (OOW) take in this situation?
Watch the actions made by the Master and if not dangerous, wait until the Master becomes more capable to take control or leaves the bridge.
Attempt to diplomatically avoid taking any actions that would put the ship or crew into danger and call the Chief Officer for assistance.
Tell the Master you consider him incapable of taking over the responsibility of the watch and that he should retire to his cabin and sleep it off.
Tell the Master you do not think this is a good idea and retain control of the watch.
According to rule 13 of the International Regulations for Preventing Collisions at Sea, what is the definition of “an overtaking vessel”?
When the vessel is detected as a radar target or sighted visually in a position directly astern.
When coming up with another vessel from a direction more than 45° abaft her beam.
When coming up with another vessel from a direction more than 22,5° abaft her beam.
When coming up with another vessel from any direction abaft her beam.
How will the ship behave if it experiences a complete loss of power (blackout) in the situation illustrated?
The vessel will gradually swing to starboard and the speed will slowly reduce.
The wind will push the vessel sideways, but the heading will not change.
The vessel will continue on course and the speed will slowly reduce.
The vessel will gradually swing to port and the speed will slowly reduce.
In the diagram, the amount of water under the keel is indicated by the letter “C”. Which bridge instrument would measure this value?
Echo Sounder.
Draught Indicator.
Arpa Radar.
ECDIS.
What is the correct understanding of the term “bank effect”? If a ship was approaching the bank at an angle, what would be the effect on the ship?
The vessel’s bow is pushed away from the bank.
The whole vessel would continue straight towards the bank and would require a large helm order to avoid going aground.
The vessel’s stern is pushed away from the bank.
The vessel’s bow is attracted by the bank.
You are on a power-driven vessel underway in open water. This vessel is sighted wide on the port bow. It’s bearing is opening, but its distance is closing rapidly. Which of the following is a correct assessment of the situation and the action to be taken?
Risk of collision is deemed to exist and I will make a broad alteration of course to starboard, sounding one short blast. I will re-assess the situation when the alteration is carried out.
Risk of collision is deemed not to exist and I will maintain my course and speed. I will continue to monitor the situation.
Risk of collision is a possibility. I will maintain my course and speed for now, but be prepared for an alteration of course to port if the CPA seems to be less than 0,2 nm as we draw closer.
Risk of collision is deemed not to exist. However, to be sure of a safe passing distance, I will reduce my speed to allow the other vessel to pass ahead.
Two mooring lines are pretensioned equally and have the same length, same breaking strength and same directional load. However, one is made of wire (with a full load elastic elongation of about 1,5 % of its length) and the other made of nylon (with a full load elongation of about 30 % of its length). If a gust of wind increases the load on the lines, how will it be shared?
Wire takes 45 % of the extra load. Rope takes 55 % of the extra load.
Wire takes 55 % of the extra load. Rope takes 45 % of the extra load.
The wire and rope will share the load equally.
Wire takes 95 % of the extra load. Rope takes 5 % of the extra load..
What is the correct understanding of the term “Isobar”?
An “Isobar” is the line showing the direction of the predicted path of a hurricane.
An “Isobar” is a line joining places of equal temperature.
An “Isobar” is the line of the cold front in a frontal depression.
An “Isobar” is a line joining places of equal pressure.
A ship is equipped with a right-handed fixed pitch propeller, which when going from Full Ahead to Full Astern will make the ship sheer to starboard. Can anything be done to reduce this change in heading?
The rudder can be put from side to side in a “Rudder Cycling” movement.
The rudder should be put Hard to Port to reduce the water flow to the left side of the propeller.
The rudder can be put to Hard to Port to reduce the water from to the right side of the propeller.
The rudder should be kept amidships when going astern and there is little that can be done to reduce the swing to starboard.
According to rule 12 of the International Regulations for Preventing Collisions, in the situation illustrated, which sailing vessel (A or B) must keep out of the way of the other?
Sailing vessel B must out of the way of sailing vessel A.
Sailing vessel A must out of the way of sailing vessel B.
Both sailing vessels are required to take avoiding action.
The upwind sailing vessel must keep out of the way of the downwind sailing vessel.
What is the depth of an iceberg below the surface of the sea?
The draught of an iceberg is normally about 3/4 of its total depth.
The draught of an iceberg varies with the type of berg and its age.
The draught of an iceberg is about the same as the visible part of the iceberg above the water.
The depth of an iceberg below the surface is always about one sixth of its total depth.
If a distress signal is received on board your ship, what should be the first action that should be taken?
Determine if anyone else has heard the distress signal and if your vessel is near the distress.
Attempt to establish contact with the distressed vessel.
Contact SAR Authorities via nearest coastal Radio station.
Determine how close your vessel is to the distressed vessel.
Where would the “pivot point” be considered to be located when the ship is proceeding at full speed ahead and there is no wind or current?
At amidships.
At about 1/6 of the ship’s length from the bow.
At a position near the stern of the ship.
At about 1/6 of the ship’s length from the stern.
When a ship is lying at anchor in a tidal area using both forward anchors, to what particular aspect should the officer of the watch be paying special attention?
The two anchors will restrict the ships swing with the tide and the ship may not lie to the prevailing current and wind.
The tension on both cables should be similar, to avoid one dragging and all the weight of the ship remaining on the other anchor only.
When the ship swings to the tide the direction of swing should be controlled to avoid the anchor cables becoming wrapped round each other.
The ship will become controlled by the tide and the wind will not be allowed to have any effect on the direction the ship lies at anchor.
The lights here show those that must be exhibited by a vessel engaged in towing, as per rule 24 of the International Collision Regulations. But how long is the tow behind this vessel?
At least 100 metres.
It exceeds 200 metres.
It is more than 50 metres but less than 200 metres.
It is less than 200 metres.
When fastening synthetic fibre ropes such as polypropylene on bitts, for safety and better rope control it is recommended to:
Make two round turns fast on the leading bitt and then figure of eight on both bitts, fig. 4.
Make it fast with round turns on the leading bitt alone, fig. 1.
Make it fast in a figure of eight fashion, fig. 3.
Make it fast on the second bitt alone, fig. 2.
The ship is navigating in dense fog where the visibility is less than one mile. The Arpa radar is set on a range 12 miles on a course of 314° and own ship has a vector as shown. What is the vector mode selected on the Arpa?
Relative vectors, sea stabilised.
True vectors.
Relative vectors, ground stabilised.
Relative vectors.
What are the required data inputs into most gyro compasses to reduce any possible compass error?
Maximum helm angle and rolling period.
Latitude and Speed.
Deviation and Variation.
All of the data in the suggested answers.
You are in an area of restricted visibility. You hear this sound signal. What does it mean?
That there is a vessel in distress nearby.
That there is a vessel at anchor in the vicinity.
That there is a vessel aground in the vicinity.
That there is a vessel engaged in underwater operations in the vicinity. She has divers down.
In the figure, which letter gives the correct understanding of the term “LENGTH OVERALL”?
Length Overall is indicated by C, in the figure.
Length Overall is indicated by D, in the figure.
Length Overall is indicated by B, in the figure.
Length Overall is indicated by A, in the figure.
When the temperature of the air increases with height it is known as a “Temperature Inversion” and may influence the performance of some instruments on the ship. What should the bridge Officer of the Watch be prepared to happen?
The GPS may give errors of position because of interference of incoming signals from the satellites.
The radar will be show abnormal sea clutter as the pulse is trapped by the inversion.
Abnormal ranges of VHF RT and Second Trace Returns on the radar.
The bearings obtained from the Directional Finder (DF) will not be as accurate as normal.
Two ships travelling in opposite directions are to pass each other in a narrow river, as illustrated. Explain what is likely to happen as they pass each other?
Due to interaction, the bows will attract each other as they approach, then they will repel each other alongside and as they pass clear, the sterns will be attracted.
Due to interaction, the bows will repel each other, and then when alongside each other the two ships will be sucked together and finally the sterns will be repelled as they start to pass clear.
As they approach, rudder should be applied quickly to avoid sheering into the path of each other. Then as they are alongside they will be attracted and finally repel each other as they pass clear.
There will be very little effect between the two ships as they pass.
You are on a power-driven vessel underway in open water. This vessel is sighted on the port bow on a steady bearing. What kind of vessel is it and what will your action be?
This is a sailing vessel underway, seen head-on. It is my responsibility to keep clear under rule 18 and I will take appropriate avoiding action.
This is a vessel engaged in fishing. It is my responsibility to keep clear under rule 18 and I will alter course to starboard, sounding one short blast.
This is a sailing vessel not making way through the water. There is no risk of collision and I will maintain my course and speed.
This is a sailing vessel underway. I am the stand-on vessel and will maintain my course and speed under rule 17.
The IMO Standard Marine Communication Phrases are recommended to be used when the ship’s Officer is verbally talking to whom?
When giving orders on board with other seafarers.
When talking on the VHF between ships.
When talking between ship and shore personnel.
In circumstances described in all of the answers provided.
What signal may be given by sound and by light to indicate that a vessel fails to understand the intentions or actions of another vessel, or is in doubt that sufficient action is being taken by the other to avoid collision?
One prolonged blast (flash), followed by five or more short and rapid blasts (flashes).
Five short and rapid blasts (flashes).
Five prolonged blasts (flashes).
Three short and rapid blasts (flashes).
How can the effects of Squat be minimized, when a ship is proceeding in shallow water?
Put a small forward trim on the vessel as this stops squat.
Maintain a speed of about six (6) knots and use minimal rudder when manoeuvring.
Enter the shallow water with a stern trim and proceed at a moderate speed.
Maintain a slow speed just sufficient to maintain steerage.
How will the ship behave if it experiences a complete loss of power (black out) in the situation illustrated?
The wind will push the vessel sideways, but the heading will not change.
The vessel will gradually swing to port and the speed will slowly reduce.
The vessel will continue on course and the speed will slowly reduce.
The vessel will gradually swing to starboard and the speed will slowly reduce.
When using the echo sounder in a river the soundings indicated may be incorrect, what would be the most probable cause of the error?
The density of the water.
There should be no error with a properly working echo sounder.
Shallow water effects.
The strength of the tide and current in the river.
What type of vessel is this and from what direction are you seeing it?
This is a vessel engaged in fishing other than trawling, making way through the water, with outlying gear extending more than 150 m in the direction of the all-round red light. I am seeing her from astern.
This is a vessel engaged in pilotage duties at anchor. I am looking at her port side.
This is a vessel engaged in fishing other than trawling, making way through the water, with outlying gear extending more than 150 m in the direction of the all-round white light. I am looking at her port side.
This is a vessel engaged in pilotage operations, deploying or recovering a pilot. I am looking at her port side.
The positions of the ship provided by the GPS receiver should always be verified by other means. Which of the following suggested methods would be the most accurate?
Bearing and distance from a navigational buoy.
Radar bearings of three distinctive shore objects.
A DR updated position from the last reliable one.
Radar ranges of three distinctive shore objects.
When plotting a position, where should the Officer of the Watch select as the ships position, when three gyro compass bearings intercept as a triangle (Cocked Hat) and not as a single point?
At the point nearest to the danger, if any.
At the point furthest away from any danger.
At the point nearest the course line drawn on the chart.
At the centre of the triangle.
You are on a sailing vessel, underway in open water. This vessel is sighted on the starboard bow, on a steady bearing and the distance is closing. By the International Regulations for the Preventing Collisions at Sea, what action will you follow?
This vessel is clearly a power-driven vessel and I anticipate that the bearing will therefore close and she will pass ahead at a safe distance.
Risk of collision is deemed to exist and, as the other vessel is on a steady bearing on my starboard side, I am required to keep out of the way. I will make a broad alteration of course to starboard.
By Rule 18, a power-driven vessel underway shall keep out of the way of a sailing vessel. I will maintain my course and speed, but will continue to monitor situation to ensure the other vessel takes avoiding action.
Risk of collision is deemed to exist and, as the other vessel is on a steady bearing on my starboard side, I will maintain my course and speed.
Is the location of the Compass Binnacle critical?
Yes, it should be on the fore and aft centreline of the ship.
Yes, it should be away from all electrical power cables.
Yes, it should be sited on a non-metallic base if possible.
Yes, for the reasons stated in all of the suggested answers.
What is the depth of an iceberg below the surface of the sea?
The draught of an iceberg varies with the type of berg and its age.
The depth of an iceberg below the surface is always about one sixth of its total depth.
The draught of an iceberg is about the same as the visible part of the iceberg above the water.
The draught of an iceberg is normally about 3/4 of its total depth.
When navigating using the GPS, how does the GPS display indicate when the accuracy of the displayed position is reduced?
A large “Correction Factor” number is displayed on the screen.
The GPS display is always very accurate and does not give any indication of lack of accuracy.
A large HDOP value is displayed on the screen.
The GPS display flashes and sounds an alarm.
With the Master on the bridge, when is the Officer of the Watch officially relieved of their responsibility for the vessel?
It varies from deep sea to pilotage operations and is never very clear.
As soon as the Master enters the bridge.
When the Master starts giving steering orders.
When the Master informs the Officer of the Watch that he is taking over the “con”.
What are the main advantages to the Navstar, Glonas and Galileo satellite navigation systems?
If a vessel uses any one of them, there is no need to practice other forms of navigation.
These satellite systems give world-wide coverage 24 hours a day.
They are all made specifically for ships and marine operations.
Satellite navigation systems also give information about weather and wave conditions.
Which of the four figures illustrated shows the correct position line for the following situation: Latitude 50° 00′ N, Longitude 30° 00′ W, Time 1200 GMT. Course steered: 090° True, Speed: 12 knots, bearing of the sun: 200°, Intercept correction: 00° 02′ Towards (observed altitude – computed altitude).
Figure 3 is correct.
Figure 1 is correct.
Figure 2 is correct.
Figure 4 is correct.
What possible reason could there be for the identification mark associated with a Racon not being visible on the radar screen?
All of the suggested answers.
The Racon may not be transmitting a pulse.
The radar may be suppressing the mark with application of the Interference Rejection control.
The transmitted radar frequency may not trigger the Racon transmitter.
Which approved publication should be used by a seafarer to help overcome any misunderstanding in communications?
Standard Marine Navigational Vocabulary.
The (ISC) Bridge Procedures Guide.
The (IMO) Standard Marine Communication Phrases (SMCP) booklet.
The Oxford Concise Dictionary.
Which statement best describes how land moves, if at all, on an ECDIS set in North-up, relative motion mode?
Land is stopped with the vessel symbol moving across the sea floor.
Land on the chart screen moves relative to the ship symbol.
The land is always in the middle of the screen.
This is a feature only seen on radar displays.
What is the weather associated with being in the centre of an Anticyclone (a region of High Pressure)?
Strong winds and heavy rain.
Light winds and fair weather, sometimes fog.
Strong winds but with very little rain.
Persistent rain and very humid weather.
The «Navigation (NA) Operational Level» subject covers both theoretical and practical knowledge regarding safety when working with electrical equipment. Mastery of this information is a key indicator of an employee's competence in their specific role on a vessel. As a 3rd officer responsible for navigation duties, your primary tasks include assisting senior officers in planning the ship’s voyage by calculating safe passage routes, preparing navigation charts, and monitoring weather conditions. You are also responsible for conducting regular safety checks on all life-saving equipment to ensure it is in good working order, as well as operating and maintaining navigational equipment like radar, GPS, and compasses to ensure they are functioning correctly.
- Version: 4.1, 5.0, 5.1, 6.0.0.
- Test type: STCW.
- Duty: 3rd Officer.
- Level: Operational.
- Theme: Navigation.
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22.10.2025
Некоторые правильные ответы помечает как не правильные. Отсутствует звуковое сопровождение для некоторых вопросов. Отсутствуют картинки для некоторых вопросов. Так же один раз выбранный мной ответ был помечен как не правильный, а в summary после теста показан он как правильный вариант, а выбранный мной ( тот же вариант ответа ) зачло как не правильный.
Для проверки знаний и подготовки к тесту - отличное решение, просто с небольшими ньюансами.
Для проверки знаний и подготовки к тесту - отличное решение, просто с небольшими ньюансами.
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