Home Online tests CES All types of vessels 2nd-Off / 3rd-Off Test for Officers onboard about Navigation, Operational Level (CES v6.0)

Online testing: Test for Officers onboard about Navigation, Operational Level (CES v6.0)

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The test consists of 80 random questions.
Total questions on this topic: 209

Question 1 from 80

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 vessel is steaming off the coast when the engine room informs the bridge it must stop engines immediately. Shortly afterwards they informed the bridge they would need a least three hours to fix it. Which of the following actions would be the most suitable taken by the bridge?

Display the NUC signal and keep a good lookout.

Display the NUC signal, maintain the watch and ask the Engine room to be a quick as possible.

Display the NUC signal, maintain the watch and wait for further developments.

Display the NUC signal, maintain the watch and determine how the ship is drifting and the probable position after 3 hours.

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.

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.

If a distress signal is received on board your ship, what should be the first action that should be taken?

Determine how close your vessel is to the distressed vessel.

Contact SAR Authorities via nearest coastal Radio station.

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.

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 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.

Is the location of the Compass Binnacle critical?

Yes, for the reasons stated in all of the suggested answers.

Yes, it should be sited on a non-metallic base if possible.

Yes, it should be on the fore and aft centreline of the ship.

Yes, it should be away from all electrical power cables.

When using the echo sounder in a river the soundings indicated may be incorrect, what would be the most probable cause of the error?

There should be no error with a properly working echo sounder.

Shallow water effects.

The strength of the tide and current in the river.

The density of the water.

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.

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.

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.

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.

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 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.

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.

I don’t know.

This is a power-driven vessel engaged in towing, more than 50 metres in length or less than 50 metres in length and showing a second masthead light, length of tow 200 metres or more, not under command. I will keep clear under rule 27.

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.

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.

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 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 required data inputs into most gyro compasses to reduce any possible compass error?

All of the data in the suggested answers.

Maximum helm angle and rolling period.

Latitude and Speed.

Deviation and Variation.

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.

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 is the advantages of a GPS satellite system compared to other navigational aids?

The GPS system gives information about position, speed and time continuously world wide.

The GPS system gives information about weather and wave conditions in the area.

The GPS system has a built-in group of six radio-beacons called a Decca chain.

The GPS system is based on hyperbola navigation.

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.

The rudder is hard over with the engine at full ahead. Will the turning effect of the rudder be changed if the engine is stopped?

Yes, the turning force will be dramatically reduced when the engine is stopped.

No, the turning force applied by the rudder will be maintained within about 90 % of the turning force when going full ahead.

Yes, the turning force will be reduced to about 50 % of the original force when the engine is stopped.

No, the turning force is unaffected by the speed of the propeller.

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.

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.

What corrections must be applied to the echo sounder reading to compare the depth of water with the depth printed on the chart?

Shallow water effects.

The distance between the pulse Transmitter and Receiver.

Draught of the ship.

Allowance for the ships speed.

What are the limits of a passage or voyage plan?

From berth to berth.

It is dependant on the voyage and if there are any river or canal transits.

From Full Away On Passage (FAOP) to End Of Passage (EOP).

From pilot to pilot.

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.

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.

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 vessel is aground. I will navigate with extreme caution given the nature of the hazard.

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.

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.

It is more than 50 metres but less than 200 metres.

At least 100 metres.

Visual signals are used by aircraft in search and rescue operations to direct ships towards a casualty. The signals shown here are part of a sequence. What does it indicate?

The assistance of your vessel is no longer required.

The casualty is sighted and will require medical assistance.

The aircraft is short on fuel and is returning to base.

The aircraft is directing a vessel towards the casualty.

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?

They shall be given on both whistles simultaneously.

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.

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?

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.

Under the Rules a proper lookout should be maintained at all times and by all available means.

What immediate actions should the Officer of the Watch take when the ship goes aground on an uncharted shoal in the middle of the ocean?

Stop engines and immediately request “Full Astern”.

Stop engines and tell the engine room to switch over to high suctions.

Stop engines and call the Master.

Sound the General Alarm and plot the ships position.

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”.

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”.

In the diagram, the amount of water under the keel is indicated by the letter “C”. Which bridge instrument would measure this value?

Draught Indicator.

Echo Sounder.

ECDIS.

Arpa Radar.

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.

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.

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.

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.

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.

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.

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.

When should gangway nets be rigged?

When it is deemed necessary by the Master of the Chief Officer.

Whenever the gangway is rigged.

Between sunset and sunrise.

Whenever the gangway is regarded as unsafe.

What does this signal hoist mean?

I require medical assistance.

Do you require assistance?

Stand by to assist me.

I require immediate assistance.

Where can a ship expect an act of piracy to take place?

All over the world.

At the south end of the Red Sea.

In Far East waters.

In American waters.

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).

The ship is to berth alongside a quay in calm conditions of no wind or current. The ship has a single fixed pitch right handed propeller. Which angle of approach would be considered the most favourable?

The decision should be left to the pilot who is in charge of the manoeuvre.

No. 3.

No. 2.

No. 1.

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.

What is the colour and characteristic of a “towing light”, as defined in the International Regulations for Preventing Collisions at Sea?

Yellow, fixed, seen over an arc of 135° and so arranged as to display 67,5° from right aft on each side of the vessel.

Amber, all-round, flashing, where it can best be seen.

One of two all-round amber, alternate flashing lights, displayed where they can best be seen.

White, fixed, displayed as an additional light on the foremast over an arc of 225°, from right ahead to 22,5° abaft the beam on each side of the vessel.

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.

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 is the description for a sidelight, as shown in rule 21 of the International Regulations for Preventing Collisions at Sea?

A red, green or yellow lantern, showing an unbroken light over an arc of 112,5°.

A green light on the starboard side and red light on the port side, showing an unbroken light over an arc of 135°, from right ahead to 22,5° abaft the beam on the respective side.

A green light on the starboard side and red light on the port side, showing an unbroken light over an arc of 112,5°, from right ahead to 22,5° abaft the beam on the respective side.

A red light or a green light, with a minimum range, in a vessel of 50 metres or more, of 3 miles. In a vessel of 10 metres.

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”.

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?

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.

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.

You are proceeding along a narrow channel and approaching a bend, on the inside shore of which is a large hill, which obsures your view further up channel. What sound signal will you make to indicate your presence to any vessel that is behind the obstructing hill?

Two short blasts.

One prolonged blast.

Two prolonged blasts.

One short blast.

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 is the two letter signal, to be used by flags, radiotelephony or radiotelegraphy, meaning “Calling All Ships”.

TT.

CQ.

CA.

AS.

If a ship requires 2 nautical miles to stop in the water from a “crash stop” when proceeding at full ahead in deep water. What will the stopping distance be in shallow water?

A shorter distance.

Similar distance to deep water.

About 1,5 nautical miles.

A greater distance.

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.

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.

Which method is used to make a physical connection between a rescue vessel and a wreck?

Sputnik line.

Rocket line.

Cosmos line.

Heaving line.

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.

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.

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?

The wire and rope will share the load equally.

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.

Wire takes 95 % of the extra load. Rope takes 5 % of the extra load..

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 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.

What is important to check when transferring a position from the GPS output to a paper chart?

Any necessary corrections are applied to convert between the GPS datum and the chart datum.

Ensure that the chart has been corrected up to date.

Ensure that the GPS is setup on the same datum as the chart.

It is important to ensure that the GPS is setup on 2 dimensional and not 3 dimensional position fixes.

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.

What is “AIR DRAUGHT”, in the figure?

Air draught is indicated by A, in the figure.

Air draught is indicated by D, in the figure.

Air draught is indicated by C, in the figure.

Air draught is indicated by B, in the figure.

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.

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.

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.

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?

I am about to depart the berth.

Caution! I have an anchor down.

You should proceed at slow speed when passing me.

My engine is disabled.

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.

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.

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.

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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