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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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You are approaching the port entrance. What do these lights mean?
Vessels may proceed – one-way traffic.
Vessels may proceed – two-way traffic.
A vessel may proceed only when she has received specific orders to do so.
A vessel may proceed only when she has received specific orders to do so, except that vessels which can safely navigate outside the main channel need not comply with this message.
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.
Contact SAR Authorities via nearest coast Radio station.
Listen for a distress message on the appropriate radio frequency for five minutes.
Determine how close your vessel is to the distressed vessel.
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?
40 tons.
80 tons.
61 tons.
100 tons.
With the Master on the bridge, when is the Officer of the Watch officially relieved of their responsibility for the vessel?
When the Master starts giving steering orders.
As soon as the Master enters the bridge.
It varies from deep sea to pilotage operations and is never very clear.
When the Master informs the Officer of the Watch that he is taking over the “con”.
Which type of vessel suffers from the greatest squat effects?
Vessel with a low Block Coefficient.
Vessel with a small length to beam ratio.
Vessel with a high Block Coefficient.
Vessel with a large length to beam ratio.
What is the direction of wind associated with an anticyclone (area of high pressure) in the Northern Hemisphere?
Clockwise around the high pressure.
Anticlockwise around the high pressure.
Straight towards the centre of the anticyclone.
Directly away from the centre of the anticyclone towards the nearest low pressure.
What sound signal can be made when nearing a bend in a river, with the view around the bend obscured by an intervening obstruction?
Two short blasts.
One prolonged blast.
Two prolonged blasts.
One short blast.
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?
True vectors.
Relative vectors, ground stabilised.
Relative vectors.
Relative vectors, sea stabilised.
What are the two parts of the magnetic compass error?
Permanent and induced magnetism.
West and East errors.
Variation and Deviation.
The latitude and longitude.
When navigating using the GPS, how does the GPS display indicate when the accuracy of the displayed position is reduced?
A large HDOP value is displayed on the screen.
A large “Correction Factor” number is displayed on the screen.
The GPS display flashes and sounds an alarm.
The GPS display is always very accurate and does not give any indication of lack of accuracy.
The ship’s rudder is full over when the ship’s engines are full ahead. Will the turning effect (lift force) of the rudder be changed when the engine is stopped?
Yes, the lift or turning force will be reduced to about 50 % of the original lift force when the engines are stopped.
Yes, the lift force will be dramatically reduced when the engines are stopped.
No, the lift force is unaffected by the speed of the propeller.
No, the turning force applied by the rudder will be maintained within about 90 % of the lift force when going full ahead.
The ship is to berth alongside a quay in calm conditions of no wind or current. The ship has a signle fixed pitch right handed propeller. Which angle of approach would be considered the most favourable?
No. 3.
No. 2.
No. 1.
The decision should be left to the pilot who is in charge of the manoeuvre.
The maximum rudder angle on your ship is 35°. Do you think this is the angle that the rudder is most effective?
No, the rudder is most effective at small rudder angles.
No, the most effective rudder angle is about 25 to 30°, this is because the rudder is stalling at 35° angle.
Yes, the rudder is most effective at max angle.
No, the rudder is most effective at angles between 10 and 20°.
What is understood by the term “Dew point” of the air?
The temperature of the water vapour in a cloud.
The temperature at which condensation in the air forms into water droplets.
All of the suggested answers.
The “Dew point” is the point at the centre of an Anticyclone.
Which of the following figures drawn on the plane of the Meridian is correct for an observer in position Latitude 30° 00′ North; Longitude 15° 00′ West, when observing the sun on the meridian, if the sun’s Declination is 15° 00′ South?
Figure 4 is correct.
Figure 2 is correct.
Figure 3 is correct.
Figure 1 is correct.
Which part of the magnetic compass error changes with a change in the course steered?
All of the suggested answers.
Deviation.
Variation.
Induced magnetism.
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 5 %.
It should be about 55 %.
It should be about 50 %.
What is correct UTC in this example? Approx. Pos: N49° 51′ W35° 23′, zone +2, Local Time 0900.
07 00.
11 00.
23 00.
19 00.
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 A must out of the way of sailing vessel B.
Both sailing vessels are required to take avoiding action.
Sailing vessel B must out of the way of sailing vessel A.
The upwind sailing vessel must keep out of the way of the downwind sailing vessel.
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 furthest away from any danger.
At the point nearest the course line drawn on the chart.
At the point nearest to the danger, if any.
At the centre of the triangle.
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.
There will be very little effect between the two ships as they pass.
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.
What is the depth of an iceberg below the surface of the sea?
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 varies with the type of berg and its age.
The draught of an iceberg is normally about 3/4 of its total depth.
What, by definition in the International Collision Regulations, is a “vessel restricted in her ability to manoeuvre”?
A vessel which because of her draught in relation to the available depth of navigable water is restricted in her ability to deviate from her course and keep out of the way of another vessel.
A vessel engaged in underwater work, such as the laying, picking up or servicing of a pipeline, or which is in support of diving operations, performing dredging and mine-clearance or is deploying or recovering a pilot.
A vessel which from the nature of her work is restricted in her ability to manoeuvre as required by the Rules and is therefore unable to keep out of the way of another vessel.
A vessel which through some exceptional circumstance is unable to manoeuvre as required by the Rules and is therefore unable to keep out of the way of another vessel.
You are in an area of restricted visibility, close to a port. You hear this signal. What vessel does it come from and what additional information does the signal provide?
A vessel at anchor, less than 100 metres in length. She is sounding the additional signal top give warning of her position.
A vessel at anchor, more than 100 metres in length. The additional signal indicates that her cable extends at least 25 metres from her bow.
A vessel at anchor, more than 100 metres in length. She is sounding the additional signal to give warning of her position.
A vessel aground, more than 100 metres in length. The additional signal indicates which side the clear water lies on.
What could be the reason for the magnetic compass to swing through large angles when the ship is rolling in a seaway?
The error due to deviation is large for that ships heading.
The Coefficient B determined by the Compass Corrector at the last dry-dock was not correctly calculated.
The heeling error magnets are upside down and/or not in the correct position.
The induced magnetism from the earth’s magnetic field is very strong in that area.
What is the purpose of a sea anchor deployed from a lifeboat?
To hold the lifeboat in position with other survival craft.
To keep the lifeboat’s heading against the wind and sea and reduce drift.
To keep the lifeboat in a position close to the vessel.
To give a better signal to any aircraft searching for survivors.
What is “AIR DRAUGHT”, in the figure?
Air draught is indicated by C, in the figure.
Air draught is indicated by B, in the figure.
Air draught is indicated by D, in the figure.
Air draught is indicated by A, in the figure.
In an extreme case, in addition to having your winch brakes as tight as can be, you can increase the brake holding capacity of the winch drum by putting it in gear and setting the power to the “heave” position. However this may cause:
All the listed alternatives.
The increased braking power of the winch to exceed the breaking strength of the wire and rope paid out from it which might cause the wire or rope to part.
Strain on the fairleads and rollers in use in excess of their Safe Working Load.
Damage to the winch by distorting the shaft.
Which of the following hull shapes would normally provide a directionally stable ship?
A long ship with a narrow beam.
A short ship with a wide beam.
A short ship with a narrow beam.
A long ship with a wide beam.
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.
How can a new officer, just boarding a ship, ensure that he knows the location and operation of all navigational and safety equipment and take account of the operating limitations of such equipment?
By following the standard company Induction procedures for a bridge watchkeeping officer.
By using the equipment on regular watchkeeping duties.
The certificate of competency will ensure the officer has suitable competence in operating the bridge equipment.
By asking other officers and practicing with the use of the equipment.
You are on a power-driven vessel underway in open water. You sight these lights on the port bow, on a steady bearing. The distance is closing. What are you looking at and what action will you take in compliance with the International Regulations for Preventing Collision at Sea?
This is a power-driven vessel, more than 50 metres in length or less than 50 metres in length and showing a second masthead light, restricted in her ability to manoeuvre. The sidelight of a second vessel can be seen beyond her. Under rule 18, I am obliged to keep clear of the first vessel and will therefore take appropriate avoiding action.
This is a power-driven vessel engaged in towing, less than 50 metres in length, length of tow under 200 metres and the tow, both being restricted in their ability to manoeuvre, seen from the starboard side. Under rule 18, I am required to keep clear and will take appropriate avoiding action.
What is the correct understanding of the term “Isobar”?
An “Isobar” is a line joining places of equal temperature.
An “Isobar” is a line joining places of equal pressure.
An “Isobar” is the line showing the direction of the predicted path of a hurricane.
An “Isobar” is the line of the cold front in a frontal depression.
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.
On the left side.
Straight ahead.
What letter is represented by this flag and what is it’s meaning when displayed by a vessel in port?
P – All persons should report on board as the vessel is about to proceed to sea.
S – I am operating astern propulsion.
P – I require a pilot.
W – All persons should report onboard as the vessel is about to proceed to sea.
How can an ARPA assist the ship to steer a suitable course to make good the entrance to a channel?
Select Relative motion display and make Own Ship vector pass through the middle of the entrance to the channel.
Acquire the buoy at the entrance to the channel and on relative vector display alter course to make the vector of the buoy pass directly through the centre of the screen.
Select True ground stabilised vectors and make the vectors from both buoys at the entrance to the channel pass either side of the centre of the screen.
Select ground stabilised true motion display and alter course so that own ships true vector passes through the middle of the entrance to the channel.
You are proceeding along a narrow channel in front of another vessel, both heading for port. You hear this signal from the vessel behind you. What does it mean?
I intend to overtake you on your port side.
I am faster than you. Get out of the way.
I intend to overtake you on your starboard side.
I am operating astern propulsion.
The maximum height that a pilot should be required to climb on a pilot ladder before reaching the deck or stepping onto an accommodation ladder platform is:
12 mtrs.
15 mtrs.
9 mtrs.
6 mtrs.
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 2 is correct.
Figure 4 is correct.
Figure 3 is correct.
Figure 1 is correct.
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 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.
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.
You are in an area of restricted visibility. You hear this sound signal. What does it mean?
That there is a vessel aground in the vicinity.
That there is a vessel at anchor in the vicinity.
That there is a vessel engaged in underwater operations in the vicinity. She has divers down.
That there is a vessel in distress nearby.
What can be simply rigged to assist a survival craft in keeping alongside own vessel?
The accommodation ladder deployed to the water surface.
The survival craft painter made fast on the vessel’s deck.
A single weighted line hanging over the side from the deck.
A painter rigged fore and aft against the vessel’s side.
When splicing an eye on a mooring wire (using the recommended 5 full tucks and 2 half tucks) the effective breaking strength of the wire may be affected by the splice. What would be the anticipated change in the breaking strength of the wire?
A reduction in strength of 1 % to 5 %.
A reduction in strength of 10 % to 15 %.
A reduction in strength of 30 % to 40 %.
No reduction in strength.
Two ships are meeting in a restricted channel as illustrated. Which of the following actions would be the most suitable to take on both vessels as they approach and pass each other?
Maintain speed and a straight course on the starboard side of the channel.
Keep as far as possible on the starboard side of the channel and maintain speed to retain effective steerage.
Increase speed slightly to pass each other as quickly as possible and thereby reduce the effects of “ship to ship” interaction.
Slow down if possible without losing steerage and be prepared for prompt application of rudder to counteract any swing as they approach and pass each other.
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?
It is less than 200 metres.
It exceeds 200 metres.
At least 100 metres.
It is more than 50 metres but less than 200 metres.
What are the main advantages to the Navstar, Glonas and Galileo satellite navigation systems?
These satellite systems give world-wide coverage 24 hours a day.
Satellite navigation systems also give information about weather and wave conditions.
If a vessel uses any one of them, there is no need to practice other forms of navigation.
They are all made specifically for ships and marine operations.
What is the correct understanding of the term “Block Coefficient” as applied to a ship?
The coefficient of a Block and Tackle.
The ratio of the waterplane shape of the ship to a rectangle of the same extreme dimensions.
The comparisons of the underwater shape of the ship, to a rectangular block of the same extreme dimensions.
The restriction of a valve in a pipe to the flow of fluid through that pipe.
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 on the second bitt alone, fig. 2.
Make it fast in a figure of eight fashion, fig. 3.
Who is ultimately responsible for the voyage plan?
The Officer of the Watch (OOW) on duty.
The Master.
The Second Officer as the official Navigation officer.
The ship owner will provide overall parameters within which the ship must follow.
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 should be kept amidships when going astern and there is little that can be done to reduce the swing to starboard.
The rudder can be put from side to side in a “Rudder Cycling” movement.
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 put Hard to Port to reduce the water flow to the left side of the propeller.
What is the weather associated with being in the centre of an Anticyclone (a region of High Pressure)?
Strong winds and heavy rain.
Persistent rain and very humid weather.
Strong winds but with very little rain.
Light winds and fair weather, sometimes fog.
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?
The ranges of three distinctive shore objects on the radar.
Bearing and distance from a navigational Buoy.
Compass bearings of three shore objects.
Bearing using the Radio Direction Finding of three radio beacons.
What is the purpose of a sea anchor?
To keep the lifeboat in a position close to the vessel.
To adjust the drifting speed of the lifeboat.
To give a better signals to any aircraft searching for survivors.
To keep the lifeboat steady against the sea/wind.
What does this signal hoist mean?
I require medical assistance.
Do you require assistance?
Stand by to assist me.
I require immediate assistance.
What action should the Officer of the Watch (OOW) take if he is forced to make a major deviation from the voyage plan?
There is no special action necessary.
Inform the Master.
Check that the deviation will not lead into danger.
Make an appropriate entry in the Log Book.
A tug is moving towards the bow of the ship to make fast and is in the vicinity of the ship’s shoulder, as illustrated. What specific danger should be considered when making this approach to the bow?
The positive pressure field at the ships bow may repel the tug and make the connection very difficult to establish.
The tug may be turned across the bow of the ship and also suffer a lose of stability with a danger of being turned over if touched by the ship.
The stern of the tug may be sucked in towards the bow and also suffer a reduction in the positive GM, making it very unstable.
All of the alternative answers.
What are the limits of a passage or voyage plan?
From Full Away On Passage (FAOP) to End Of Passage (EOP).
From berth to berth.
It is dependant on the voyage and if there are any river or canal transits.
From pilot to pilot.
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 more than 100 metres in length. She is sounding an additional warning signal to approaching vessels, directing them to “keep clear”.
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”.
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 that they are “running into danger”.
What actions should the Officer of the Watch take when the ship’s steering gear fails?
Call the Master and advise him of the situation.
Display the NUC signal and consider stopping the engines.
All of the suggested answers.
Request the engine room to check the steering gear.
You are on a power-driven vessel underway in open water. This vessel is sighted directly ahead. The distance is closing slowly. What action will you take under the International Collision Regulations and why?
I will keep out of her way. I am the overtaking vessel and am obliged to keep clear under rule 13.
I will maintain my course and speed. The other vessel is being overtaken and is therefore obliged to keep out of the way by rule 13.
The vessel is on a steady bearing and the distance is closing. I will therefore take avoiding action, altering course to starboard and sounding one short blast under rules 14 and 16.
When making a new pilot ladder onboard the ship, which of the following ropes would be best suited as the side ropes on which the steps are fastened?
Nylon rope.
Polyester rope.
Polypropylene rope.
Uncovered manila rope.
Which method is used to make a physical connection between a rescue vessel and a wreck?
Sputnik line.
Rocket line.
Cosmos line.
Heaving line.
Why should a Ground Stabilised True Motion radar display not be used for anti-collision purposes?
Because this display is only ever used for navigation.
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.
True motion does not provide the collision risk of targets as only true vectors are available.
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. However, to be sure of a safe passing distance, I will reduce my speed to allow the other vessel to pass ahead.
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 and I will maintain my course and speed. I will continue to monitor the situation.
What can be used to reduce the effect of the state of sea-water?
Vegetable/Fish Oil.
Foam.
Crude Oil.
Fuel Oil.
The IMO Standard Marine Communication Phrases are recommended to be used when the ship’s Officer is verbally talking to whom?
When talking between ship and shore personnel.
In circumstances described in all of the answers provided.
When giving orders on board with other seafarers.
When talking on the VHF between ships.
What is the probable cause of an error in position of the ship obtained from the GPS system?
A three dimensional instead of a two dimensional position output.
Incorrect height of the antenna.
All of the suggested answers.
Abnormal sun spot activity causing unusual radiation effects.
The ship is required to be stopped in the water as quickly as possible, but without major changes to the ship’s heading. What is the most effective method to achieve this?
Put the engine full astern and keep the rudder amidships.
The use of the rudder hard over both sides combined with reducing engine power, a method known as “high frequency rudder cycling”.
Make a complete turn while reducing the engine power.
Make a zig zag manoeuvre while reducing the engine power.
A man is reported to have fallen overboard and the Officer of the Watch releases the lifebuoy and starts a man overboard manoeuvre, who are the first persons onboard he should inform?
The Master only.
The crew quarters for extra lookouts.
Master and Engine Room.
Chief Officer and lifeboat party.
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?
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.
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.
What radar device assists in the detection and location of a survival craft?
AIS beacon.
EPIRB beacon.
A personal locator beacon.
SART beacon.
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 do not think this is a good idea and retain control of the watch.
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.
According to the International Regulations for Preventing Collisions and the illustrated lights, what type of vessel is this and from what direction is it viewed?
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. Looking at its port side.
This is a vessel engaged in pilotage duties at anchor. Looking at its port side.
This is a vessel engaged in fishing other than trawling, making way through the water, with outlying gear extending more than 150 metres in the direction of the all-round red light. Looking at it from astern.
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 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.
There will be very little effect between the two ships as they pass.
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.
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.
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.
Persistent rain and very humid weather.
Strong winds but with very little rain.
What special equipment can often provide assistance in locating a survival craft or man overboard and in the water?
A SART.
A sectored search pattern.
A RACON.
AIS.
What are the main components causing the magnetic compass to require a regular evaluation and compass correction?
The change in the position of the magnetic pole causing annual changes in the variation.
The continual changes of courses steered by the ship.
Deviation and Variation.
Permanent and induced magnetism in the ships structure.
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?
Five prolonged blasts (flashes).
Five short and rapid blasts (flashes).
One prolonged blast (flash), followed by five or more short and rapid blasts (flashes).
Three short and rapid blasts (flashes).
What can be a cause of error observed on a gyro compass reading?
Fluctuations in the magnetism around the compass.
Incorrectly set heading and speed values.
Incorrectly set latitude and speed values.
Large values of variation caused by the gyro pole.
The ship’s engine is going astern and the ship is piking up sternway. The rudder is amidships and the ship has a single, right-handed, fixed pitch propeller. What would be expected to happen?
The ship will probably start to change heading to starboard and stern speed will increase.
The ship will probably start to change heading to port and stern speed will increase.
The ship will move astern at an increasing speed and the stern start to swing off to starboard.
The ship will probably go straight astern without a change in heading and the stern speed will increase.
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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