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

Вопрос 1 из 80

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.

If the radar is set onto the Relative Motion Display, what would an echo of a target with no trail indicate? Note this the trail of the echo and not a vector.

The target is stopped and making no way through the water.

The target is on the same course and speed as own ship.

The target is on a constant bearing and getting closer to own ship.

The target is on a collision course with own ship.

What does this signal hoist mean?

I require medical assistance.

Do you require assistance?

Stand by to assist me.

I require immediate assistance.

The ship has a single fixed pitch right-handed propeller and is going astern as illustrated. What is the most likely way the ship will react in these circumstances?

The stern will “back” into the wind and the ship’s heading will swing to starboard.

The stern will fall off to starboard, making the heading swing to port.

The bow will “seek” the wind and the ship will swing to port.

The ship will go straight astern and the heading will remain approximately the same.

Rule 12 of the International Collision Regulations prescribes the action to be taken by a sailing vessel when meeting another sailing vessel. This depends on the direction of the wind relative to each vessel. In the situation shown here, which sailing vessel (A or B) must keep out of the way of the other?

The upwind sailing vessel must keep out of the way of the downwind sailing vessel.

Sailing vessel B must keep out of the way of sailing vessel A.

Both sailing vessels are required to take avoiding action.

Sailing vessel A must keep out of the way of sailing vessel B.

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.

Can anything be done on a vessel with forward speed, to reduce the change in heading caused by a right hand fixed pitch propeller being put astern?

No, 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 should be put hard to starboard to reduce the water flow to the left side of the propeller.

Yes, the rudder can be put to port.

The rudder can be cycled from side to side.

What is the purpose of a fire wire?

A wire for pulling burning ships off the pier.

A wire for pulling fire-hoses up to the top bridge.

A wire for handling fire buckets.

A wire for securing the Fire Tug alongside a burning ship.

The ship has a right-handed propeller and is swinging to starboard when the engines are slow ahead and the rudder is to starboard. The engines are stopped and the rate of swing rapidly slows down. How could the swing to starboard be maintained without the ship making much headway.

Transverse Thrust will reduce the swing and therefore a kick ahead is necessary with full starboard helm applied.

The only effective method is by using the bow thruster to push the bow to starboard.

Astern on the engines will allow Transverse Thrust to continue the swing.

By applying the rudder hard over to starboard and going ahead on the engines.

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.

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.

If your vessel is fitted with wires on self-stowing “split drum” winches, the advantage of having these split drum winches is:

Increased brake holding capacity due to the ability to keep the paid out wire in a single layer on the drum.

Less chance of the wire being jammed in the reel.

No crushing of the wire.

All the listed alternatives.

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.

Report all clear to the tug.

No need for reporting as the order was given from the bridge.

Report all clear to the Engine Room.

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 we seeing here?

A sailing vessel of less than 10 metres in length, displaying the mandatory combined lantern in lieu of sailing lights, seen head-on.

A sailing vessel, seen from astern, where the edges of her sidelights are both visible.

A sailing vessel less than 20 metres in length, displaying the optional combined lantern in lieu of standard sailing lights, seen head-on.

A sailing vessel, at anchor.

During an STS operation with one ship at anchor, should an anchor watch be maintained?

Anchor watch responsibility rests with the discharging vessel which would be the vessel which is anchored.

Both ships have normal anchor watch responsibility in addition to watching ship to ship fendering, mooring etc.

Anchor watches are not kept as the duty officers will be on deck conducting the cargo operations.

Anchor watch responsibility rests with the vessel which has its anchor down and the ship to ship connections is the responsibility of the other vessel.

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.

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.

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?

It does not matter where the spreaders are fitted.

At intervals not exceeding 12 steps.

At intervals not exceeding 15 steps.

At intervals not exceeding 9 steps.

Which of the answers best summarises the information which should be provided for the bridge Officer of the Watch within an effective Voyage plan?

Courses to steer; distance off dangers; parallel index lines; expected currents; prevailing winds; distance between alteration points.

Expected prevailing wind and weather.

Contingency arrangements in case of problems.

All of the suggested answers.

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 a Caution.

Either an Alarm, a Warning or an Information.

When navigating along a coastline what should be considered the most accurate method of navigating?

Use of radar ranges and bearings.

Passing close to navigational buoys.

Use of Differential GPS.

Bearings of navigational shore marks such as lighthouses.

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 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.

A ship where the amount of positive transverse stability (GM) will vary with the direction of the ship’s head.

Which of the answers best summarises the information which should be provided for the bridge Officer of the Watch within an effective Voyage plan?

All of the suggested answers.

Expected prevailing wind and weather.

Contingency arrangements in case of problems.

Courses to steer; distance off dangers; parallel index lines; expected currents; prevailing winds; distance between alteration points.

Can the OOW be the sole lookout?

Only if the ARPA radar is set onto Auto Acquisition with an audio alarm sounding when a ship is detected.

When the visibility is good and the ship is in the middle of the ocean where there is very little shipping.

Never should the Officer of the Watch be the only lookout.

During daylight when visibility and traffic allows.

If a ship in deep water requires 2 nautical miles to “crash stop”, what will be the crash stopping distance in shallow water for the same start speed?

Similar distance to deep water.

A greater distance.

A shorter distance.

Depends on the crash stop used.

What do the shapes that this vessel is displaying tell us about her?

That she is not under command.

That she is engaged in towing.

That she is restricted in her ability to manoeuvre.

That she is constrained by her draught.

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?

All of the possible answers.

Keep a good lookout for other ships.

Display the “Not under Command” signal and switch off the normal steaming lights.

Plot the direction and rate of drift and predict the ships position for the period while the ship is “Not Under Command”.

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.

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 = a, 2 = b, 3 = c and 4 = d.

1 = c, 2 = d, 3 = a and 4 = b.

What are the additional duties required by the Officer of the Watch when navigating in fog?

Sound fog signal, effective radar watch reporting ship movements to Master and keep a good lookout for ships and fog signals.

All of the suggested answers.

Sound fog signal, plot positions and keep a good lookout.

When navigating in fog the Master will take over the watch and the Officer of the Watch should follow all of his instructions.

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 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 steer with the prevailing weather and sea on the beam and the boat to be launch on the leeside.

The ship should steer about 30° off the prevailing weather and sea with the boat to be launch on the leeside.

The ship should lie stopped in the water with the weather on the opposite side to the boat to be launched.

You are in open water and clear conditions. You are approaching the pilot station when you hear this signal from a vessel ahead of you. What does it signify?

That the vessel is altering his course to starboard.

That the vessel is operating astern propulsion.

That the vessel is picking up his pilot.

That the vessel is starting his engine and resuming his passage.

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.

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.

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 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.

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 underway, seen head-on. It is my responsibility to keep clear under rule 18 and I will take appropriate avoiding action.

Which statement best describes how land moves, if at all, on an ECDIS set in North-up, relative motion mode?

This is a feature only seen on radar displays.

The land is always in the middle of the screen.

Land on the chart screen moves relative to the ship symbol.

Land is stopped with the vessel symbol moving across the sea floor.

What is the situation of this vessel?

This vessel is not under command, but is making way through the water.

This vessel is not under command and stopped in the water.

This vessel is aground.

This is a vessel constrained by her draft.

How can the effects of Squat be minimized, when a ship is proceeding in shallow water?

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.

Put a small forward trim on the vessel as this stops squat.

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.

How will the ship behave if it experiences a complete loss of power (blackout) in the situation illustrated?

The vessel will gradually swing to port and the speed will slowly reduce.

The vessel will gradually swing to starboard and the speed will slowly reduce.

The vessel will continue on course and the speed will slowly reduce.

The wind will push the vessel sideways, but the heading will not change.

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.

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.

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 radar device assists in the detection and location of a survival craft?

AIS beacon.

EPIRB beacon.

A personal locator beacon.

SART beacon.

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 whole vessel would continue straight towards the bank and would require a large helm order to avoid going aground.

The vessel’s bow is pushed away from the bank.

The vessel’s stern is pushed away from the bank.

The vessel’s bow is attracted by the bank.

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 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 less than 100 metres in length. She is sounding an additional warning to approaching vessels to “navigate with extreme caution”.

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 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”.

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?

All mooring winches be left in “auto-tension” mode.

All winches to be left with the manual brake on and out of gear.

The “breastline” and “headline” winches be left in the auto-tension mode and spring winches with manual brake on.

The “spring” winches be left in the auto-tension mode and all other winches with the manual brake on.

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 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.

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 forward on the tug, in a vertical line, the upper and lower being balls and the middle one a diamond.

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.

What does this signal flag indicate when seen on a vessel in a port approach?

Keep clear. I have divers down.

I require a pilot.

I am in distress and require immediate assistance.

I require medical assistance.

How can an ARPA assist the ship to steer a suitable course to make good the entrance to a 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.

Select Relative motion display and make Own Ship vector pass through the middle of the entrance to the channel.

What methods could be introduced into a passage plan for continuous monitoring of the ships position when navigating along a coastline?

Parallel Index lines.

Conspicuous headlands and navigational marks for taking positions.

The radar ranges of the coastline at all course alteration points.

All of the suggested answers.

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 %.

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.

Which approved publication should be used by a seafarer to help overcome any misunderstanding in communications?

Standard Marine Navigational Vocabulary.

The Oxford Concise Dictionary.

The (ISC) Bridge Procedures Guide.

The (IMO) Standard Marine Communication Phrases (SMCP) booklet.

You are approaching a port in a snowstorm. You hear this signal. What kind of vessel is it and what is it doing?

It comes from a vessel at anchor, less than 100 metres in length.

It comes from a vessel engaged in pilotage duties and it is making way through the water.

It comes from a vessel engaged in pilotage duties at anchor, over 100 metres in length.

It comes from a vessel restricted in her ability to manoeuvre.

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.

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 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.

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.

Which of the following precautions should be taken when work is to be carried out on the radar scanner unit on the mast?

Only the electrical fuses forthe radar undergoing repairs needs to be removed, allowing the ship to retain a workable radar.

A “Not to be used” sign on all radars and fuses for the complete radar systems to be removed.

Only the electrical fuses for the scanner motor needs to be removed.

A sign needs to be attached to all the radars warning the bridge officers of repairs and the fact the radars are “Not to be used”.

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 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.

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?

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 tension on both cables should be similar, to avoid one dragging and all the weight of the ship remaining on the other anchor only.

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 two anchors will restrict the ships swing with the tide and the ship may not lie to the prevailing current and wind.

What would be the stopping distance of a VLCC when proceeding at 8 knots in deep water and the engines are put “Full Astern”?

8 nautical miles.

Varies, but can be determined from trial data.

15 ship lengths.

4 nautical miles.

The ship is involved in a collision, what is the immediate action by the Officer of the Watch after the incident has taken place?

Contact the other ship and send the bridge lookout down to start taking soundings.

Stop engines and check over the side for any signs of pollution.

Call the Master and check the position for any immediate dangers.

Sound the General Alarm and stop engines.

A ship is being overtaken by another ship while proceeding along a river. What should be the required procedure?

The overtaking vessel should request permission to overtake from the Port Control VTS.

The overtaking vessel can overtake but must allow sufficient space to reduce the interaction between the two vessels.

The overtaking vessel should request permission from the other ship by sounding two prolonged blasts followed by two short blasts on the whistle or by direct VHF contact.

There should be no overtaking in these confined waters.

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.

Radar ranges of three distinctive shore objects.

A DR updated position from the last reliable one.

When should voyage planning be done?

Before the pilot is leaves the vessel at the departure port.

During the pilotage when leaving the berth.

Prior to leaving the berth.

Before the vessel completes the previous passage.

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.

Why should Ground Stabilised True Motion display mode be avoided when using the ARPA for anti-collision purposes?

The collision regulations are based on ship courses through the water.

The true vector can never give an indication of collision risk with another ship.

True motion does not provide the collision risk of other ships.

The Relative Motion display and relative vectors is the only display to use for anti-collision purposes.

What would be considered the most favourable heading of a ship when launching a lifeboat?

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 100° of the prevailing weather and sea with the boat to be launched 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.

The ship should steer about 30° off the prevailing weather and sea with the boat to be launch on the leeside.

In a canal without water flow, if a vessel was approaching a bank at an angle, what would be the probable effect on it?

The vessel’s stern is pushed away from the bank.

The vessel’s bow is attracted by the bank.

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.

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.

There is no noticeable difference in performance of the ship.

The speed is not affected, but more rudder is required to steer the ship.

The ship is less responsive to both rudder and propeller.

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.

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).

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 in open water and clear conditions. You are approaching the pilot station when you hear this signal from a vessel ahead of you. What does it signify?

That the vessel is picking up his pilot.

That the vessel is altering his course to starboard.

That the vessel is starting his engine and resuming his passage.

That the vessel is operating astern propulsion.

A ship normally turns (swings) around a point which is not the centre of gravity. What is this point normally called?

Centre of Turn.

Centre of Buoyancy.

Centre of Floatation.

Pivot Point.

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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