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

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

Your result: 40%

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Right answers:

According to the International Regulations for Preventing Collisions and the illustrated lights, what type of vessel is it?

Your answer is correct:

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

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

Your answer is correct:

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.

Is the location of the Compass Binnacle critical?

Your answer is correct:

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

What is understood by the term “Dew point” of the air?

Your answer is correct:

The temperature at which condensation in the air forms into water droplets.

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?

Correct answer:

The assistance of your vessel is no longer required.

Your Answer:

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

Which is the “CENTRE LINE”, in the figure?

Your answer is correct:

The Fore and aft Centreline is indicated by A, in the figure.

Which option best completes the following statement? An operator using ECDIS, will notice an out of position navigation buoy because:

Correct answer:

The radar return and ENC buoy symbol will not coincide.

Your Answer:

A local port authority would send an automatic signal to ECDIS.

What does this flag mean?

Your answer is correct:

I have a diver down; keep well clear at slow speed.

What are the main advantages to the Navstar, Glonas and Galileo satellite navigation systems?

Your answer is correct:

These satellite systems give world-wide coverage 24 hours a day.

What would be the effects of a ship passing into shallow water?

Your answer is correct:

The ship is less responsive to both rudder and propeller.

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

Your answer is correct:

Listen for a distress message on the appropriate radio frequency for five minutes.

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?

Your answer is correct:

Yes, the rudder can be put to port.

Which of the following answers most suitably cover the standard duties of the bridge Officer of the Watch when the ship is at anchorage?

Your answer is correct:

Display anchor signal, check the ships position and keep a good lookout.

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?

Your answer is correct:

It exceeds 200 metres.

You are proceeding along a coastal route when you hear this signal. The visibility is severely restricted. What does the signal mean?

Correct answer:

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”.

Your Answer:

There is a vessel aground in the vicinity. She is less than 100 metres in length. She is sounding an additional warning to approaching vessels to “navigate with extreme caution”.

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

Correct answer:

That she is not under command.

Your Answer:

That she is restricted in her ability to manoeuvre.

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?

Correct answer:

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.

Your Answer:

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.

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

Correct answer:

All over the world.

Your Answer:

At the south end of the Red Sea.

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

Correct answer:

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

Your Answer:

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

What is “AIR DRAUGHT”, in the figure?

Correct answer:

Air draught is indicated by C, in the figure.

Your Answer:

Air draught is indicated by A, in the figure.

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

Correct answer:

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

Your Answer:

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

What can be used to reduce the effect of the state of sea-water?

Correct answer:

Vegetable/Fish Oil.

Your Answer:

Fuel Oil.

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?

Your answer is correct:

No. 2.

What sound signal can be made when nearing a bend in a river, with the view around the bend obscured by an intervening obstruction?

Your answer is correct:

One prolonged blast.

The tug has been released and is all clear. As officer in charge of that operation, should this be reported and to whom?

Your answer is correct:

Reported all clear to the Bridge.

What is the correct understanding of the term “a ship with good Directional Stability”?

Correct answer:

A ship which when the rudder is left amidships, it will continue on approximately a straight course.

Your Answer:

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

Your answer is correct:

Pivot Point.

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?

Your answer is correct:

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

Correct answer:

Varies, but can be determined from trial data.

Your Answer:

15 ship lengths.

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?

Correct answer:

Figure 4 is correct.

Your Answer:

Figure 1 is correct.

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

Correct answer:

Echo Sounder.

Your Answer:

Draught Indicator.

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

Correct answer:

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

Your Answer:

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.

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?

Correct answer:

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.

Your Answer:

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.

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.

Correct answer:

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

Your Answer:

The target is on a collision course with own ship.

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?

Correct answer:

Yes, the lift force will be dramatically reduced when the engines are stopped.

Your Answer:

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

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?

Your answer is correct:

No. 2.

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?

Correct answer:

That the vessel is operating astern propulsion.

Your Answer:

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

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?

Correct answer:

A greater distance.

Your Answer:

Similar distance to deep water.

What type of vessel is this and from what direction are you seeing it?

Correct answer:

This is a vessel engaged in fishing other than trawling, making way through the water, with outlying gear extending more than 150 m in the direction of the all-round white light. I am looking at her port side.

Your Answer:

This is a vessel engaged in fishing other than trawling, making way through the water, with outlying gear extending more than 150 m in the direction of the all-round red light. I am seeing her from astern.

What are the two parts of the magnetic compass error?

Your answer is correct:

Variation and Deviation.

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?

Correct answer:

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

Your Answer:

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

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

Your answer is correct:

CQ.

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?

Correct answer:

All of the possible answers.

Your Answer:

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

Is the location of the Compass Binnacle critical?

Your answer is correct:

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

In the figure, which letter gives the correct understanding of the term “LENGTH OVERALL”?

Correct answer:

Length Overall is indicated by B, in the figure.

Your Answer:

Length Overall is indicated by C, in the figure.

What special equipment can often provide assistance in locating a survival craft or man overboard and in the water?

Correct answer:

A SART.

Your Answer:

AIS.

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?

Correct answer:

It exceeds 200 metres.

Your Answer:

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

The rudder is in the hard over position with the propeller stopped and the ship turning slowly. On a ship with a single fixed pitch right handed propeller and no thrusters, what can be done to make the ship increase the speed of turn without significantly increasing the forward speed of the ship?

Correct answer:

Give the engines a short kick ahead.

Your Answer:

Give full astern on the engines until ship has stopped and then full ahead on the engines with rudder hard over.

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

Correct answer:

SART beacon.

Your Answer:

A personal locator beacon.

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

Correct answer:

Maintain a slow speed just sufficient to maintain steerage.

Your Answer:

Enter the shallow water with a stern trim and proceed at a moderate speed.

Which part of the magnetic compass error changes with a change in the course steered?

Correct answer:

Deviation.

Your Answer:

Induced magnetism.

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

Correct answer:

Draught of the ship.

Your Answer:

The distance between the pulse Transmitter and Receiver.

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?

Your answer is correct:

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.

According to rule 13 of the International Regulations for Preventing Collisions at Sea, what is the definition of “an overtaking vessel”?

Your answer is correct:

When coming up with another vessel from a direction more than 22,5° abaft her beam.

What is the direction of wind associated with an anticyclone (area of high pressure) in the Northern Hemisphere?

Correct answer:

Clockwise around the high pressure.

Your Answer:

Directly away from the centre of the anticyclone towards the nearest low pressure.

Where would the “pivot point” be considered to be located when the ship is proceeding at full speed ahead and there is no wind or current?

Correct answer:

At about 1/6 of the ship’s length from the bow.

Your Answer:

At about 1/6 of the ship’s length from the stern.

The IMO Standard Marine Communication Phrases are recommended to be used when the ship’s Officer is verbally talking to whom?

Correct answer:

In circumstances described in all of the answers provided.

Your Answer:

When giving orders on board with other seafarers.

What is the probable cause of an error in position of the ship obtained from the GPS system?

Your answer is correct:

Incorrect height of the antenna.

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

Correct answer:

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

Your Answer:

The ship should steer about 100° of the prevailing weather and sea with the boat to be launched on the leeside.

Can the OOW be the sole lookout?

Correct answer:

During daylight when visibility and traffic allows.

Your Answer:

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

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

Your answer is correct:

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.

What are we seeing here?

Correct answer:

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

Your Answer:

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

Ships vary considerably in design and underwater shape, but does the ship’s trim ever have any influence on its steering abilities?

Your answer is correct:

Yes, the ship often steers better if trimmed by the stern.

What is the correct understanding of the term “Isobar”?

Correct answer:

An “Isobar” is a line joining places of equal pressure.

Your Answer:

An “Isobar” is the line showing the direction of the predicted path of a hurricane.

Who is responsible for the number and the position of any tugs to be used during a mooring operation?

Correct answer:

The Master, with consideration of the advice of the pilot.

Your Answer:

The Pilot is fully responsible for the number and use of tugs within the port area.

What is the purpose of a sea anchor?

Correct answer:

To keep the lifeboat steady against the sea/wind.

Your Answer:

To keep the lifeboat in a position close to the vessel.

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

Your answer is correct:

CQ.

What action should the Officer of the Watch (OOW) take if he is forced to make a major deviation from the voyage plan?

Correct answer:

Inform the Master.

Your Answer:

There is no special action necessary.

You are in an area of restricted visibility. You hear this sound signal. What does it mean?

Correct answer:

That there is a vessel in distress nearby.

Your Answer:

That there is a vessel engaged in underwater operations in the vicinity. She has divers down.

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?

Correct answer:

A vessel at anchor, more than 100 metres in length. She is sounding the additional signal to give warning of her position.

Your Answer:

A vessel at anchor, less than 100 metres in length. She is sounding the additional signal top give warning of her position.

What could be the reason for the magnetic compass to swing through large angles when the ship is rolling in a seaway?

Your answer is correct:

The heeling error magnets are upside down and/or not in the correct position.

What is the purpose of a fire wire?

Your answer is correct:

A wire for pulling burning ships off the pier.

In the Beaufort Scale of Wind Force, what is the Beaufort number associated with the wind force known as a “Gale”? This should not be confused with a “Near Gale” or “Strong Gale”?

Your answer is correct:

Eight (8).

When fastening synthetic fibre ropes such as polypropylene on bitts, for safety and better rope control it is recommended to:

Correct answer:

Make two round turns fast on the leading bitt and then figure of eight on both bitts, fig. 4.

Your Answer:

Make it fast on the second bitt alone, fig. 2.

When fastening synthetic fibre ropes such as polypropylene on bitts, for safety and better rope control it is recommended to:

Your answer is correct:

Make two round turns fast on the leading bitt and then figure of eight on both bitts, fig. 4.

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?

Correct answer:

Five short and rapid blasts (flashes).

Your Answer:

One prolonged blast (flash), followed by five or more short and rapid blasts (flashes).

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?

Correct answer:

All of the possible answers.

Your Answer:

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

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?

Correct answer:

100 tons.

Your Answer:

80 tons.

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

Correct answer:

All of the suggested answers.

Your Answer:

Expected prevailing wind and weather.

Which of the four calculations illustrated is the correct one to determine the latitude of the observer when the sun is on the meridian?

Your answer is correct:

Calculation 3 is correct.

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