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: 95%
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Right answers:
1
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.2
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.3
When navigating along a coastline what should be considered the most accurate method of navigating?
Your answer is correct:
Use of Differential GPS.4
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.5
What is important to check when transferring a position from the GPS receiver to a paper chart?
Your answer is correct:
That the chart datum is also WGS84 or there are corrections.6
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?
Your answer is correct:
That the vessel is operating astern propulsion.7
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?
Your answer is correct:
On the right side.8
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?
Your answer is correct:
At about 1/6 of the ship’s length from the bow.9
What are the main components causing the magnetic compass to require a regular evaluation and compass correction?
Your answer is correct:
Permanent and induced magnetism in the ships structure.10
What, by definition in the International Collision Regulations, is a “vessel restricted in her ability to manoeuvre”?
Your answer is correct:
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.11
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.12
In the figure, which letter gives the correct understanding of the term “LENGTH OVERALL”?
Your answer is correct:
Length Overall is indicated by B, in the figure.13
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.14
What sound signal shall be used on ship’s whistle when there is a man overboard?
Your answer is correct:
3 long blasts repeatedly.15
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?
Your answer is correct:
The vessel’s bow is pushed away from the bank.16
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).17
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.18
What possible reason could there be for the identification mark associated with a Racon not being visible on the radar screen?
Your answer is correct:
All of the suggested answers.19
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.20
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.
Correct answer:
Astern on the engines will allow Transverse Thrust to continue the swing.Your Answer:
Transverse Thrust will reduce the swing and therefore a kick ahead is necessary with full starboard helm applied.21
What radar device assists in the detection and location of a survival craft?
Your answer is correct:
SART beacon.22
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.23
What are the limits of a passage or voyage plan?
Your answer is correct:
From berth to berth.24
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.25
The gyro compass can suffer from a compass error and may need to be allowed for, when steering a course in a dangerous navigational area. What is the probable cause of the error?
Correct answer:
An uncorrected course and speed error.Your Answer:
Compass Deviation.26
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.27
Which option best completes the following statement? An operator using ECDIS, will notice an out of position navigation buoy because:
Your answer is correct:
The radar return and ENC buoy symbol will not coincide.28
What actions should the Officer of the Watch take when the ship’s steering gear fails?
Your answer is correct:
All of the suggested answers.29
You are proceeding along a coastal route when you hear this signal. The visibility is severely restricted. What does the signal mean?
Your answer is correct:
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”.30
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.31
With the Master on the bridge, when is the Officer of the Watch officially relieved of their responsibility for the vessel?
Your answer is correct:
When the Master informs the Officer of the Watch that he is taking over the “con”.32
What corrections must be applied to the echo sounder reading to compare the depth of water with the depth printed on the chart?
Your answer is correct:
Draught of the ship.33
What is the situation of this vessel?
Your answer is correct:
This vessel is not under command, but is making way through the water.34
If your vessel is fitted with wires on self-stowing “split drum” winches, the advantage of having these split drum winches is:
Your answer is correct:
All the listed alternatives.35
How will the ship behave if it experiences a complete loss of power (black out) in the situation illustrated?
Your answer is correct:
The vessel will gradually swing to port and the speed will slowly reduce.36
What does this flag mean?
Your answer is correct:
I have a diver down; keep well clear at slow speed.37
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?
Your answer is correct:
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.38
When should a ship’s officer use some of the English language found in the IMO’s publication “Standard Marine Communication Phrases”?
Your answer is correct:
In circumstances described in all of the answers provided.39
Which type of vessel suffers from the greatest squat effects?
Your answer is correct:
Vessel with a high Block Coefficient.40
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.41
What is “AIR DRAUGHT”, in the figure?
Your answer is correct:
Air draught is indicated by C, in the figure.42
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.43
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?
Your answer is correct:
True vectors.44
Which is the “CENTRE LINE”, in the figure?
Your answer is correct:
The Fore and aft Centreline is indicated by A, in the figure.45
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.46
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. 4.47
What is correct UTC in this example? Approx. Pos: N49° 51′ W35° 23′, zone +2, Local Time 0900.
Your answer is correct:
11 00.48
What letter is represented by this flag and what is it’s meaning when displayed by a vessel in port?
Your answer is correct:
P – All persons should report on board as the vessel is about to proceed to sea.49
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.50
In the diagram, the amount of water under the keel is indicated by the letter “C”. Which bridge instrument would measure this value?
Your answer is correct:
Echo Sounder.51
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.52
What is the colour and characteristic of a “towing light”, as defined in the International Regulations for Preventing Collisions at Sea?
Your answer is correct:
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.53
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?
Your answer is correct:
By asking other officers and practicing with the use of the equipment.54
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?
Your answer is correct:
Five short and rapid blasts (flashes).55
The Master has decided to “single up” to a spring line at each end as the last lines to let go whilst unmooring. Which of the following methods should be used to hold the lines, whilst waiting for the order to “let go”?
Your answer is correct:
The line should be turned up on the bitts, fig. 1.56
Who is ultimately responsible for the voyage plan?
Your answer is correct:
The Master.57
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.58
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.59
You are approaching a port in a snowstorm. You hear this signal. What kind of vessel is it and what is it doing?
Your answer is correct:
It comes from a vessel engaged in pilotage duties and it is making way through the water.60
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?
Your answer is correct:
It should be about 20 %.61
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.62
If a distress signal is received on board your ship, what should be the first action that should be taken?
Your answer is correct:
Attempt to establish contact with the distressed vessel.63
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.64
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.65
The position of the ship provided by the GPS should always be confirmed by other means, when possible. Which of the following suggested methods would be the most accurate?
Your answer is correct:
The ranges of three distinctive shore objects on the radar.66
Two ships are meeting in a restricted channel as illustrated. Which of the following actions would be the most suitable to take on both vessels as they approach and pass each other?
Your answer is correct:
Slow down if possible without losing steerage and be prepared for prompt application of rudder to counteract any swing as they approach and pass each other.67
Which of the answers best summarises the information which should be provided for the bridge Officer of the Watch within an effective Voyage plan?
Your answer is correct:
All of the suggested answers.68
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?
Your answer is correct:
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.69
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?
Your answer is correct:
Stop engines and call the Master.70
What corrections must be applied to the echo sounder reading to compare the depth of water with the depth printed on the chart?
Your answer is correct:
Draught of the ship.71
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?
Your answer is correct:
All winches to be left with the manual brake on and out of gear.72
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?
Your answer is correct:
The assistance of your vessel is no longer required.73
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. 4.74
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. 2.75
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?
Your answer is correct:
Yes, the turning force will be dramatically reduced when the engine is stopped.76
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.77
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.78
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.79
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.80