Is the following statement True or False? Compilation scale is the scale of the paper chart from which the vector chart was made:
Your answer is correct:
True.
2
Is the following statement True or False? Traditional buoy symbols on an ENC vector chart look similar to symbols seen on a paper chart:
Your answer is correct:
True.
3
Select the correct meaning of the abbreviation ZOC in relation to ECDIS:
Correct answer:
Zone of Confidence.
Your Answer:
Zone of Confusion.
4
Select the option best describes the meaning of a magenta coloured “i” in a box seen on a charted sea area in relation to ECDIS:
Correct answer:
There is some information appertaining to the sea area.
Your Answer:
It is an indicator that a chart correction has been applied.
5
Select the option that best describes a cautionary area on the ECDIS:
Correct answer:
Orange cross hatching on the chart display.
Your Answer:
Vertical grey bars on the chart display.
6
Select the option that best describes how ECDIS informs the operator of an approaching chart at different scale to the one being used:
Your answer is correct:
There will be a thick continuous black line visible.
7
Select the option that best describes how Temporary and Preliminary notices are shown on the vector chart in relation to ECDIS:
Correct answer:
The ECDIS may not display them – a navigator’s note could be set up to show them.
Your Answer:
Ts & Ps are shown in a magenta colour near the area of the notice.
8
Select the option that best describes the meaning of a magnet a coloured “i” in a box with a line to an object in relation to ECDIS:
Your answer is correct:
There is more information available on the object than is shown on the display.
9
Select the option that best describes the meaning of the text “bn 10” on an ECDIS display:
Your answer is correct:
Navigation beacon number 10.
10
Select the option that best describes the meaning of the text “bn 12” on an ECDIS display:
Your answer is correct:
Navigation beacon number 12.
11
Select the option that best describes why vertical grey lines can sometimes be seen all over the ECDIS display:
Correct answer:
ECDIS is set at the wrong scale for the vector chart loaded.
Your Answer:
The chart scale is the same as the compilation scale.
12
Select the option that correctly completes the following statement in relation to ECDIS: “A ZOC A1 indicates the depth accuracy on the vector chart to be…”
Your answer is correct:
0,5 m + 1 % of depth value.
13
Select the option that correctly completes the following statement in relation to ECDIS: “A navigation buoy cancelled with a chart update will…”
Your answer is correct:
Have an orange diagonal line through the symbol.
14
Select the option that correctly completes the following statement in relation to ECDIS: “An isolated danger buoy is represented on an ENC chart with…”
Your answer is correct:
Two red spheres slightly inclined.
15
Select the option that correctly completes the following statement in relation to ECDIS: “Isolated danger symbols are not seen on a vector chart when they should be because…”
Correct answer:
The safety depth contour is set with too small a value.
Your Answer:
There will be some other symbol there that gives the same visual information.
16
Select the option that correctly completes the following statement in relation to ECDIS: “Updates to official ENCs cover…”
Correct answer:
All relevant chart corrections.
Your Answer:
All Temporary and Preliminary notices.
17
Select the option that correctly completes the following statement in relation to ECDIS: “A grey question mark alongside an object indicates that…”
Correct answer:
The position of the object is doubtful.
Your Answer:
There is an attribute missing from the object.
18
Select the option that correctly completes the following statement in relation to ECDIS: “A precautionary area is shown on the ENC as…”
Correct answer:
A magenta coloured “i” in a box inside a diagonal hatched area.
Your Answer:
Words saying “Precautionary Area – take care” in the area.
19
Select the option that correctly completes the following statement in relation to ECDIS: “An isolated danger beacon is represented on an ENC chart with…”
Correct answer:
Two upright red spheres.
Your Answer:
Two red spheres slightly inclined.
20
Select the option that correctly completes the following statement in relation to ECDIS: “ECDIS alarms…”
Correct answer:
Should never be ignored and must be investigated.
Your Answer:
Are a nuisance and only happen when a sensor is failing to the ECDIS.
21
Select the statement that best answer this question: Do some ECDIS devices show tidal stream values as an information overlay?
Correct answer:
Yes – if they have dedicated software loaded on the ECDIS computer.
Your Answer:
No – this feature can be seen on standalone bridge computers only.
22
Select the statement that best answer this question: Do ECDIS depth soundings show height of tide on them?
Correct answer:
Most do not, but in the future most will.
Your Answer:
Yes – they show chart datum with the maximum tide rise added on.
23
Select the statement that best describes a buoy symbol that is NOT properly defined in the ENC data set:
Correct answer:
A spherical buoy grey in colour.
Your Answer:
Always red for a port lateral mark, green for a starboard lateral mark.
24
Select the statement that best describes how an operator establishes the nature of an isolated danger on an ENC:
Correct answer:
Interrogate it and ask for a pick report.
Your Answer:
Check the chart symbols catalogue to ascertain the meaning.
25
Select the statement that best describes the anomalies that are sometimes seen on ECDIS:
Your answer is correct:
They are features of the ECDIS that sometimes seem illogical.
26
Select the statement that best describes the use of docking mode on ECDIS:
Your answer is correct:
ECDIS used with the vessel close to berths.
27
Select the statement that best describes the use of the text “bn” on an ENC display:
Correct answer:
Stops confusing beacon numbers and depth sounding figures.
Your Answer:
They are adjectives and are used to describe land objects.
28
Select the statement that best describes why a Port State Control Officer is interested in ECDIS when they undertake vessel inspections:
Correct answer:
Because ECDIS has to comply with IMO requirements.
Your Answer:
They are required to register the ECDIS Type for the IMO.
29
Select the statement that best describes why a button on ECDIS shows with a red highlight:
Correct answer:
The ECDIS is in an alarm state.
Your Answer:
It is a warning to the operator that they are using a raster chart instead of a vector chart.
30
What happens on the ECDIS display when the selected safety contour value does NOT exist in the chart data set?
Correct answer:
The next highest value will be shown highlighted as a bold line.
Your Answer:
The depth areas will be coloured dark blue.
31
Which answer BEST describes how dredged areas are highlighted on the ENC chart display?
Correct answer:
Dredged areas are highlighted with a grey dotted fill in the dredge area.
Your Answer:
Dredged areas are highlighted as a text box with the words “dredged area” inside.
32
Which answer correctly completes the following statement: The safety depth contour value is calculated by adding…
Your answer is correct:
The draught of the vessel plus a safe under keel clearance.
33
Which answer describes how the safety depth contour is seen on ECDIS?
Your answer is correct:
As a solid line with the contour highlighted in bold.
34
Which answer describes the minimum amount of information shown on an ENC vector chart?
Correct answer:
The “Base” layer.
Your Answer:
The “Standard” layer.
35
Which answer describes the two types of buoy symbols found on an ENC vector chart?
Correct answer:
Simplified and traditional.
Your Answer:
Simplified and IALA system C.
36
Which of the following BEST describes why a button on the ECDIS shows with a yellow highlight?
Correct answer:
It is an indication to inform the operator of something.
Your Answer:
It is normal on ECDIS for system buttons to show yellow.
37
Which of the following statements is the most accurate in relation to the safety depth contour setting on an ECDIS?
Correct answer:
The safety depth contour is best set at a value to reflect the vessel’s draught.
Your Answer:
The safety depth contour value is best set at a high value.
38
Which of the given features is indicated by a grey vertical rectangle on an ENC in relation to ECDIS?
Your answer is correct:
An undefined beacon.
39
Which of the given options best describes an ECDIS being in “browse” mode?
Correct answer:
A mode allowing the operator to look ahead on the chart.
Your Answer:
A mode for casual operation of the system.
40
Which of the options correctly completes the following statement? ECDIS display various colours and shades on vector chart depth areas, because:
Your answer is correct:
They are easily seen by the operator.
41
Which of the statements best describes how the raster chart gives advice on data quality in relation to ECDIS?
Correct answer:
There are notes on the chart that can be read.
Your Answer:
The chart has a ZOC function where the data quality can be assessed.
42
Which of the statements best describes what happens to the sounding figures on the display when the safety depth figure is set on an ECDIS?
Correct answer:
Depth values below the depth are highlighted in bold.
Your Answer:
There will be alarms activated to let the operator know the depth under keel.
43
Which option best describes the reason behind this statement? There should be regular ECDIS monitor colour tests:
Correct answer:
To ensure the monitor shows correct colours.
Your Answer:
The manufacturer’s warranty indicates to do this.
44
Which option best describes what lies below an isolated danger symbol on an ENC?
Correct answer:
There could be any seafloor obstruction.
Your Answer:
There is a rock outcrop not seen by the survey team.
45
Which statement BEST describes how ECDIS sees land coded in the vector chart as a point source?
Correct answer:
The land will not be recognised as an obstacle to the ECDIS.
Your Answer:
The land will be recognised when the route is validated.
46
Which statement best describes how the vector chart gives advice on data quality in relation to ECDIS?
Your answer is correct:
The chart has a ZOC function.
47
Which statement best describes orange cross hatching as might be seen on an ECDIS sea area?
Correct answer:
Orange cross hatching is an indication of a Cautionary area.
Your Answer:
The ECDIS sees an area with dredged sounding values and shows it in orange hatching.
48
Which statement best describes the action needed if ECDIS cannot automatically display Temporary and Preliminary notices?
Your answer is correct:
Annotate the ECDIS using the notes function.
49
Which statement best describes the meaning of the Paris Memorandum?
Correct answer:
An understanding for Port State Control Officers in Europe.
Your Answer:
An agreement between worldwide nations for ECDIS development.
50
Which statement best describes what happens to land in North up relative motion mode on ECDIS?
Correct answer:
Land on screen moves relative to the ship symbol.
Your Answer:
Land is stopped with the vessel symbol moving.
51
Which statement best describes what happens to the land in North up true motion mode on ECDIS?
Correct answer:
Land on the screen does not move until it resets.
Your Answer:
This is a feature only seen on radar.
52
Which statement best describes what happens to the ship symbol in North up relative motion mode on ECDIS?
Your answer is correct:
Vessel symbol is stopped on the screen.
53
Which statement best describes what happens to the ship symbol in North up true motion mode on ECDIS?
Correct answer:
Vessel symbol moves across the screen.
Your Answer:
Vessel symbol shows the heading fixed vertically on the screen.
54
Which statement best describes why it is important to remove cancelled chart cells from the ECDIS?
Your answer is correct:
To stop them being loaded onto the ECDIS display.
55
Which statement best describes why the ECDIS has settings for ambient light conditions?
Correct answer:
Observation of the screen is necessary under all light conditions at sea.
Your Answer:
The sensitivity of the operator’s eyes is a factor allowing changes.