Test for Officers onboard about Navigation, Operational Level (CES v6.0)
Test results
The test consisted of 80 random questions.
Total questions on this topic: 209
Total questions on this topic: 209
Your result: 74%
Right answers:
1
What actions should be taken by the Officer of the Watch if the ship’s steering system totally fails?
Correct answer:
All of the suggested answers.Your Answer:
Call the Master and advise them of the situation.2
What possible reason could there be for the identification mark associated with a Racon not being visible on the radar screen?
Correct answer:
All of the suggested answers.Your Answer:
The Racon may not be transmitting a pulse.3
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 aground, more than 100 metres in length. The additional signal indicates which side the clear water lies on.4
What methods could be introduced into a passage plan for continuous monitoring of the ships position when navigating along a coastline?
Your answer is correct:
Parallel Index lines.5
What are we seeing here?
Your answer is correct:
A sailing vessel less than 20 metres in length, displaying the optional combined lantern in lieu of standard sailing lights, seen head-on.6
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?
Correct answer:
Risk of collision is deemed not to exist and I will maintain my course and speed. I will continue to monitor the situation.Your Answer:
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.7
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?
Correct answer:
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.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 white light. Looking at its port side.8
Which of the four calculations illustrated is the correct one to determine the latitude of the observer when the sun is on the meridian?
Correct answer:
Calculation 3 is correct.Your Answer:
Calculation 1 is correct.9
What sound signal shall be used on ship’s whistle when there is a man overboard?
Your answer is correct:
3 long blasts repeatedly.10
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?
Your answer is correct:
Under the Rules a proper lookout should be maintained at all times and by all available means.11
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?
Correct answer:
Yes, the rudder can be put to port.Your Answer:
No, the rudder should be kept amidships when going astern and there is little that can be done to reduce the swing to starboard.12
What are the required data inputs into most gyro compasses to reduce any possible compass error?
Your answer is correct:
Latitude and Speed.13
What are the two parts of the magnetic compass error?
Your answer is correct:
Variation and Deviation.14
Which of the following precautions should be taken when work is to be carried out on the radar scanner unit on the mast?
Your answer is correct:
A “Not to be used” sign on all radars and fuses for the complete radar systems to be removed.15
The IMO Standard Marine Communication Phrases are recommended to be used when the ship’s Officer is verbally talking to whom?
Your answer is correct:
In circumstances described in all of the answers provided.16
What would be considered the most favourable heading of a ship when launching a lifeboat?
Your answer is correct:
The ship should steer about 30° off the prevailing weather and sea with the boat to be launch on the leeside.17
A ship normally turns (swings) around a point which is not the centre of gravity. What is this point normally called?
Correct answer:
Pivot Point.Your Answer:
Centre of Floatation.18
What is the purpose of a sea anchor deployed from a lifeboat?
Your answer is correct:
To keep the lifeboat’s heading against the wind and sea and reduce drift.19
What is the advantages of a GPS satellite system compared to other navigational aids?
Your answer is correct:
The GPS system gives information about position, speed and time continuously world wide.20
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 a position near the stern of the ship.21
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?
Your answer is correct:
100 tons.22
The position of the ship is found by taking a series of bearings using a magnetic compass. How should an error of 5° WEST be applied to the compass bearings?
Your answer is correct:
Subtract 5° to the bearings.23
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?
Your answer is correct:
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.24
During an STS operation with one ship at anchor, should an anchor watch be maintained?
Your answer is correct:
Both ships have normal anchor watch responsibility in addition to watching ship to ship fendering, mooring etc.25
What does this flag mean?
Your answer is correct:
I have a diver down; keep well clear at slow speed.26
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.
Correct answer:
1 = a, 2 = b, 3 = c and 4 = d.Your Answer:
1 = b, 2 = c, 3 = d and 4 = a.27
What is the depth of an iceberg below the surface of the sea?
Your answer is correct:
The draught of an iceberg varies with the type of berg and its age.28
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?
Your answer is correct:
At intervals not exceeding 9 steps.29
What does this flag mean?
Your answer is correct:
I have a diver down; keep well clear at slow speed.30
What is the correct understanding of the term “Block Coefficient” as applied to a ship?
Your answer is correct:
The comparisons of the underwater shape of the ship, to a rectangular block of the same extreme dimensions.31
You are approaching a port in a snowstorm. You hear this signal. What kind of vessel is it and what is it doing?
Correct answer:
It comes from a vessel engaged in pilotage duties and it is making way through the water.Your Answer:
It comes from a vessel at anchor, less than 100 metres in length.32
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 aground in the vicinity.33
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:
Anticlockwise around the high pressure.34
You are approaching the port entrance. What do these lights mean?
Your answer is correct:
A vessel may proceed only when she has received specific orders to do so.35
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?
Your answer is correct:
One prolonged blast.36
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?
Correct answer:
The rudder can be put to Hard to Port to reduce the water from to the right side of the propeller.Your Answer:
The rudder can be put from side to side in a “Rudder Cycling” movement.37
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?
Your answer is correct:
Wire takes 95 % of the extra load. Rope takes 5 % of the extra load..38
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?
Your answer is correct:
You should proceed at slow speed when passing me.39
Which approved publication should be used by a seafarer to help overcome any misunderstanding in communications?
Your answer is correct:
The (IMO) Standard Marine Communication Phrases (SMCP) booklet.40
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. 4.41
What does this signal flag indicate when seen on a vessel in a port approach?
Your answer is correct:
I am in distress and require immediate assistance.42
When navigating using the GPS, how does the GPS display indicate when the accuracy of the displayed position is reduced?
Your answer is correct:
A large HDOP value is displayed on the screen.43
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.44
In a canal without water flow, if a vessel was approaching a bank at an angle, what would be the probable effect on it?
Your answer is correct:
The vessel’s bow is pushed away from the bank.45
What are the additional duties required by the Officer of the Watch when navigating in fog?
Your answer is correct:
Sound fog signal, effective radar watch reporting ship movements to Master and keep a good lookout for ships and fog signals.46
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.47
What letter is represented by this flag and what is it’s meaning when displayed by a vessel in port?
Correct answer:
P – All persons should report on board as the vessel is about to proceed to sea.Your Answer:
S – I am operating astern propulsion.48
Where can the size of the Magnetic Compass Error be found?
Correct answer:
By taking a transit bearing of two fixed geographical positions and comparing it with the bearing of the same points on the chart.Your Answer:
By reference to the last entry in the Compass Error Log Book.49
What type of vessel is this and from what direction are you seeing it?
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 m in the direction of the all-round white light. I am looking at her port side.50
This vessel is sighted ahead and slightly to port. What is her situation? What will you do?
Your answer is correct:
This vessel is aground. I will navigate with extreme caution given the nature of the hazard.51
Which approved publication should be used by a seafarer to help overcome any misunderstanding in communications?
Your answer is correct:
The (IMO) Standard Marine Communication Phrases (SMCP) booklet.52
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.53
What is the description for a sidelight, as shown in rule 21 of the International Regulations for Preventing Collisions at Sea?
Your answer is correct:
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.54
What are the immediate duties of the bridge Officer of the Watch when the ship suddenly runs into a fog bank?
Your answer is correct:
Commence sounding the fog signal, engines on standby, call the Master and lookout, if not already on duty.55
What is the correct understanding of the term “Block Coefficient” as applied to a ship?
Your answer is correct:
The comparison of the underwater shape of the ship, to a rectangular block of the same extreme dimensions.56
What is the correct understanding of the term “a ship with good Directional Stability”?
Your answer is correct:
A ship moving forwards with the rudder amidships, will continue in a straight line.57
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?
Correct answer:
Both sailing vessels are required to take avoiding action.Your Answer:
Sailing vessel B must out of the way of sailing vessel A.58
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?
Your answer is correct:
All of the possible answers.59
The Second Officer, when on watch on the bridge, is often referred to as the OOW. What does OOW actually stand for?
Your answer is correct:
Officer of the Watch.60
When using the echo sounder in a river the soundings indicated may be incorrect, what would be the most probable cause of the error?
Your answer is correct:
The density of the water.61
What are the required data inputs into most gyro compasses to reduce any possible compass error?
Your answer is correct:
Latitude and Speed.62
What actions should the Officer of the Watch take when the ship’s steering gear fails?
Correct answer:
All of the suggested answers.Your Answer:
Request the engine room to check the steering gear.63
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?
Your answer is correct:
Give the engines a short kick ahead.64
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 picking up his pilot.65
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?
Your answer is correct:
Radar ranges of three distinctive shore objects.66
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.67
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.
Your answer is correct:
Astern on the engines will allow Transverse Thrust to continue the swing.68
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.69
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?
Your answer is correct:
All of the possible answers.70
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?
Your answer is correct:
Sailing vessel A must keep out of the way of sailing vessel B.71
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?
Your answer is correct:
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.72
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.73
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?
Your answer is correct:
Attempt to diplomatically avoid taking any actions that would put the ship or crew into danger and call the Chief Officer for assistance.74
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?
Correct answer:
It should be about 20 %.Your Answer:
It should be about 50 %.75
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?
Your answer is correct:
Yes, the lift force will be dramatically reduced when the engines are stopped.76
What is the colour and characteristic of a “towing light”, as defined in the International Regulations for Preventing Collisions at Sea?
Correct answer:
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.Your Answer:
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.77
What is the weather associated with being in the centre of an Anticyclone (a region of High Pressure)?
Your answer is correct:
Light winds and fair weather, sometimes fog.78
What is correct UTC in this example? Approx. Pos: N49° 51′ W35° 23′, zone +2, Local Time 0900.
Your answer is correct:
11 00.79
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:
Your answer is correct:
9 mtrs.80