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Home Online tests CBT All types of vessels MASTER / Ch-Officer Test for seamans about ECDIS Display Feature (CBT)
Online testing: Test for seamans about ECDIS Display Feature (CBT)
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Is the following statement True or False? Compilation scale is the scale of the paper chart from which the vector chart was made:
False.
True.
Is the following statement True or False? Traditional buoy symbols on an ENC vector chart look similar to symbols seen on a paper chart:
False.
True.
Select the correct meaning of the abbreviation ZOC in relation to ECDIS:
Zone of Communications.
Zone of Confidence.
Zone of Confusion.
Zero on Carbon.
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:
The ECDIS is trying to say something to the operator about the route.
It is an indicator that a chart correction has been applied.
There is some information appertaining to the sea area.
There is an object missing from the chart.
Select the option that best describes a cautionary area on the ECDIS:
Magenta cross hatching on the chart display.
Vertical grey bars on the chart display.
Red cross hatching on the chart display.
Orange cross hatching on the chart display.
Select the option that best describes how ECDIS informs the operator of an approaching chart at different scale to the one being used:
There will be a thick continuous black line visible.
The chart detail will not be visible.
A visual alarm will activate.
An audible alarm will sound.
Select the option that best describes how Temporary and Preliminary notices are shown on the vector chart in relation to ECDIS:
Ts & Ps are always shown on the chart in blue text being loaded manually.
Ts & Ps are always automatically loaded and visible alongside the area of concern being.
Ts & Ps are shown in a magenta colour near the area of the notice.
The ECDIS may not display them – a navigator’s note could be set up to show them.
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:
It is a recently added object to the chart data set.
The object has been moved with a chart correction.
The position of the object is approximate.
There is more information available on the object than is shown on the display.
Select the option that best describes the meaning of the text “bn 10” on an ECDIS display:
Attribute set at level 10.
Navigation beacon number 10.
Depth figure of 10 metres.
VHF channel 10 to be used.
Select the option that best describes the meaning of the text “bn 12” on an ECDIS display:
Attribute set at level 12.
VHF channel 12 to be used.
Navigation beacon number 12.
Depth figure of 12 metres.
Select the option that best describes why vertical grey lines can sometimes be seen all over the ECDIS display:
There is not enough detail to show soundings correctly.
The chart scale is the same as the compilation scale.
ECDIS is set at the wrong scale for the vector chart loaded.
The lines show where shallow water begins.
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…”
5 m + 10 % depth.
2 m + 5 % depth figure.
1 m + 2 % depth.
0,5 m + 1 % of depth value.
Select the option that correctly completes the following statement in relation to ECDIS: “A navigation buoy cancelled with a chart update will…”
Have a magenta box around it.
Have an orange box around it.
Have an orange diagonal line through the symbol.
Be removed from the chart display altogether.
Select the option that correctly completes the following statement in relation to ECDIS: “An isolated danger buoy is represented on an ENC chart with…”
Two upright red spheres.
A single red sphere.
A single black sphere.
Two red spheres slightly inclined.
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…”
The object is not a threat to the vessel.
The safety depth contour is set with too small a value.
The draught of the vessel is not great enough to hit it.
There will be some other symbol there that gives the same visual information.
Select the option that correctly completes the following statement in relation to ECDIS: “Updates to official ENCs cover…”
Changes to navigation buoys only.
Changes to the chart in navigable areas.
All Temporary and Preliminary notices.
All relevant chart corrections.
Select the option that correctly completes the following statement in relation to ECDIS: “A grey question mark alongside an object indicates that…”
There is an attribute missing from the object.
The ENC data set does not know what the object is.
The position of the object is doubtful.
There is more information available on the object.
Select the option that correctly completes the following statement in relation to ECDIS: “A precautionary area is shown on the ENC as…”
A magnet a coloured “i” in a box.
A magenta coloured “i” in a box inside a diagonal hatched area.
Words saying “Precautionary Area – take care” in the area.
A magenta filled box with red borders.
Select the option that correctly completes the following statement in relation to ECDIS: “An isolated danger beacon is represented on an ENC chart with…”
Two upright red spheres.
A single black sphere.
Two red spheres slightly inclined.
A single red sphere.
Select the option that correctly completes the following statement in relation to ECDIS: “ECDIS alarms…”
Only need to be acknowledged.
Are a nuisance and only happen when a sensor is failing to the ECDIS.
Should never be ignored and must be investigated.
Are the responsibility of the Master alone.
Select the statement that best answer this question: Do some ECDIS devices show tidal stream values as an information overlay?
No – this feature is not possible with ECDIS.
No – this feature can be seen on standalone bridge computers only.
Yes – if they have dedicated software loaded on the ECDIS computer.
Yes – this is a standard feature embedded in all ECDIS software.
Select the statement that best answer this question: Do ECDIS depth soundings show height of tide on them?
Always, as the ECDIS can calculate tide heights automatically.
Most do not, but in the future most will.
No – because the tide changes.
Yes – they show chart datum with the maximum tide rise added on.
Select the statement that best describes a buoy symbol that is NOT properly defined in the ENC data set:
A spherical buoy grey in colour.
Always red for a port lateral mark, green for a starboard lateral mark.
ECDIS will always define the correct characteristic of the buoy.
Always green for a port lateral mark, red for a starboard lateral mark.
Select the statement that best describes how an operator establishes the nature of an isolated danger on an ENC:
Check the surrounding area for any clues on the sea floor.
Check with a senior officer.
Check the chart symbols catalogue to ascertain the meaning.
Interrogate it and ask for a pick report.
Select the statement that best describes the anomalies that are sometimes seen on ECDIS:
They are ECDIS features dictated to manufacturers by Port State.
They are caused by a mismatch in the navigation signal datum.
They are errors caused by the vector chart having bad information.
They are features of the ECDIS that sometimes seem illogical.
Select the statement that best describes the use of docking mode on ECDIS:
ECDIS used only when the vessel enters a dry dock.
The ECDIS switched to stand by awaiting updates.
ECDIS used with the vessel close to berths.
The ECDIS set to stand by with the vessel alongside.
Select the statement that best describes the use of the text “bn” on an ENC display:
Stops confusing beacon numbers and depth sounding figures.
They are adjectives and are used to describe land objects.
“bn” is a code for the object in the data set.
Helps the operator understand sounding figures.
Select the statement that best describes why a Port State Control Officer is interested in ECDIS when they undertake vessel inspections:
There is a section on their check sheet that has to be ticked.
They are required to register the ECDIS Type for the IMO.
They enjoy playing with the new features.
Because ECDIS has to comply with IMO requirements.
Select the statement that best describes why a button on ECDIS shows with a red highlight:
It is a warning to the operator that they are using a raster chart instead of a vector chart.
It shows an incoming email.
The ECDIS is in an alarm state.
It is an indication that the vector chart has loaded successfully.
What happens on the ECDIS display when the selected safety contour value does NOT exist in the chart data set?
The next lowest will be highlighted as a bold line.
The depth areas will be coloured dark blue.
The next highest value will be shown highlighted as a bold line.
The ECDIS will not display a contour value at all.
Which answer BEST describes how dredged areas are highlighted on the ENC chart display?
The depth areas will be coloured dark blue.
The next lowest will be highlighted as a bold line.
Dredged areas are highlighted with a grey dotted fill in the dredge area.
Dredged areas are highlighted as a text box with the words “dredged area” inside.
Which answer correctly completes the following statement: The safety depth contour value is calculated by adding…
The draught of the vessel plus a safe under keel clearance.
The draught of the vessel plus one percent.
The draught of the vessel minus a safe under keel clearance.
The charted depth on the berth plus the draught of the vessel.
Which answer describes how the safety depth contour is seen on ECDIS?
The contour line pulses to make it visible.
As a solid line with the contour highlighted in bold.
It is shown as a thick dotted red line.
It is coloured bright orange.
Which answer describes the minimum amount of information shown on an ENC vector chart?
“SENC” layer.
The “Base” layer.
ENC data set layer.
The “Standard” layer.
Which answer describes the two types of buoy symbols found on an ENC vector chart?
IALA systems C and D.
Simplified and IALA system C.
Simplified and traditional.
Simplified and IALA system D.
Which of the following BEST describes why a button on the ECDIS shows with a yellow highlight?
It is an indication to inform the operator of something.
It is normal on ECDIS for system buttons to show yellow.
It is an alarm that should be acknowledged immediately.
It is something associated with the land colour.
Which of the following statements is the most accurate in relation to the safety depth contour setting on an ECDIS?
The safety depth contour value is best set at a high value.
The safety depth contour value is best set at a low value.
The safety depth contour value has no effect on ECDIS operation.
The safety depth contour is best set at a value to reflect the vessel’s draught.
Which of the given features is indicated by a grey vertical rectangle on an ENC in relation to ECDIS?
A symbol associated with oilfields.
The absence of chart information.
A house on land.
An undefined beacon.
Which of the given options best describes an ECDIS being in “browse” mode?
A mode putting ECDIS into a stand by condition to investigate files.
A mode allowing the operator to look ahead on the chart.
A mode for casual operation of the system.
A mode allowing the operator, not sure of their position, to fix using radar.
Which of the options correctly completes the following statement? ECDIS display various colours and shades on vector chart depth areas, because:
It stops the ship grounding on them.
They are easily seen by the operator.
They set off alarms on the bridge.
It lets ECDIS know they are there.
Which of the statements best describes how the raster chart gives advice on data quality in relation to ECDIS?
The chart has a ZOC function where the data quality can be assessed.
Data quality comes from text that describes the sea floor type.
Data quality comes from the help menu on the stand alone computer.
There are notes on the chart that can be read.
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?
Depth values below the depth are highlighted in bold.
The display looks the same as it did before and is unchanged.
There will be alarms activated to let the operator know the depth under keel.
The whole sea area below that depth turns dark blue.
Which option best describes the reason behind this statement? There should be regular ECDIS monitor colour tests:
Monitor test complies with IMO’s and IHO’s requirements.
The manufacturer’s warranty indicates to do this.
It says that in the bridge procedures guide.
To ensure the monitor shows correct colours.
Which option best describes what lies below an isolated danger symbol on an ENC?
There is a wreck from a sunken vessel.
There is a rock outcrop not seen by the survey team.
There is probably a man-made subsea structure associated with oil or gas.
There could be any seafloor obstruction.
Which statement BEST describes how ECDIS sees land coded in the vector chart as a point source?
The land will be recognised when the route is validated.
The land will show up in a green shade on the screen.
The land will not be recognised as an obstacle to the ECDIS.
When the ECDIS is zoomed in, the land will get bigger on the screen.
Which statement best describes how the vector chart gives advice on data quality in relation to ECDIS?
The chart has text on it that describes the sea floor type.
The chart has a ZOC function.
It does not – the operator has to go to the help menu on the stand alone computer.
There are source data diagrams on the chart that can be read.
Which statement best describes orange cross hatching as might be seen on an ECDIS sea area?
It means that a chart correction has been added somewhere in the area.
Orange cross hatching is an indication of a Cautionary area.
The ECDIS sees an area with dredged sounding values and shows it in orange hatching.
It is an indication of a port approach area.
Which statement best describes the action needed if ECDIS cannot automatically display Temporary and Preliminary notices?
Ignore them as they will be made into a Notice to Mariners soon.
Ask a VAR to encode them into SENC format.
Inform the Master.
Annotate the ECDIS using the notes function.
Which statement best describes the meaning of the Paris Memorandum?
An agreement between worldwide nations for ECDIS development.
A reminder that ECDIS should be kept up to date.
A government paper in France concerning hydrography.
An understanding for Port State Control Officers in Europe.
Which statement best describes what happens to land in North up relative motion mode on ECDIS?
The land is always in the middle of the screen.
Land on screen moves relative to the ship symbol.
Land is stopped with the vessel symbol moving.
This is a feature only seen on radar.
Which statement best describes what happens to the land in North up true motion mode on ECDIS?
This is a feature only seen on radar.
The land is always in the middle of the screen.
Land on the screen does not move until it resets.
Land is moving with the vessel symbol stopped.
Which statement best describes what happens to the ship symbol in North up relative motion mode on ECDIS?
This is a feature only seen on radar.
Vessel symbol is always in the middle of the screen.
Vessel symbol is stopped on the screen.
Vessel symbol moves across the screen.
Which statement best describes what happens to the ship symbol in North up true motion mode on ECDIS?
This is a feature only seen on radar.
Vessel symbol shows the heading fixed vertically on the screen.
Vessel is stopped on the screen land moves relative.
Vessel symbol moves across the screen.
Which statement best describes why it is important to remove cancelled chart cells from the ECDIS?
To stop them being loaded onto the ECDIS display.
It is part of flag State requirements.
New charts will not load if old versions are there.
So that the computer hard drive stays uncluttered.
Which statement best describes why the ECDIS has settings for ambient light conditions?
Observation of the screen is necessary under all light conditions at sea.
To allow the bridge team time to adjust their eyes at night.
The sensitivity of the operator’s eyes is a factor allowing changes.
The screen will automatically set light levels day on night.
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