ECDIS EXAM QUESTIONS AND
ANSWERS 100% PASS
Alarms - ANS - Safety Contour
- Area with Special Conditions
- Deviation from Route
- Approach to Critical Point
- Malfunction of ECDIS
- Different Geodetic Datum
- Positioning System Failure
Indications - ANS - Default Safety Contour
- Information Overscale
- Larger scale ENC Available
- No ENC available
- Customized display
- Cross a danger in route monitoring mode
- Route planning across specified area
- Route planning across safety contour
- System test failure
- Different reference system
What are required sensors of ECDIS? - ANS - Heading
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,- Speed
- Position
Radar is required to be connected to ECDIS? - ANS Radar is not required
What are the methods of loading chart data? - ANS - Automatically
- Manually from the present route
- Manually from the total portfolio
- Manually displayed by the cursor position
If the ECDIS is using raster charts, which mode is it in? - ANS RCDS
Who is responsible for setting the safety contour in the ECDIS? - ANS Watch Officer
Which safety parameter is used for generating anti-grounding alarms? - ANS Safety Contour
The ECDIS can emphasize soundings equal to or less than the ___________ when every spot
soundings are selected for display. - ANS Safety Depth
Do the shallow and deep contours generate anti-grounding alarms? - ANS No, there are no
alarms/indications associated with the shallow and deep contours. The shallow and deep
contours are only for information and enhance the chart display.
ECDIS is comprised of? - ANS Hardware, Software, and Data
What are the chart display categories? - ANS Base, Standard, and All
Is true motion optional, or required? - ANS Per IMO standards, true motion is required.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, The ownship is displayed as a ______ on the SENC. - ANS The own ship is displayed as either
a symbol or true scale by ECDIS.
The radar image and the position for the position sensor should be adjusted automatically for
antenna offset from which of the following? - ANS Conning Position (CCRP)
Which of the following would not be an effective way to cross-check the accuracy of the vessel's
position on ECDIS? - ANS Switching the ECDIS into DR mode.
The abbreviation HDOP stands for? - ANS Horizontal Dilution of Precision
What is the diagnostic function of the GPS receiver that tests the accuracy of the GPS signal? -
ANS RAIM
Is GPS or DGPS more accurate? - ANS DGPS
The abbreviation PDOP stands for? - ANS Position Dilution of Precision
The higher the DOP value, the ______ accurate the position. - ANS Less
The accuracy of chart data is dependent on? - ANS The Accuracy of survey and all
hydrographic data, Shifting of Buoys, and Coverage and completeness of chart data.
ENCs should be referred to which geodetic datum? - ANS WGS 84
Are ENC's allowed to overlap within the same usage band? - ANS The IHO, through S-57
prohibits ENC from overlapping within the same navigational purpose/usage bands.
The Transas ECDIS allows for charts to be display by? - ANS Charts can be displayed by the
complete list or by position
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
ANSWERS 100% PASS
Alarms - ANS - Safety Contour
- Area with Special Conditions
- Deviation from Route
- Approach to Critical Point
- Malfunction of ECDIS
- Different Geodetic Datum
- Positioning System Failure
Indications - ANS - Default Safety Contour
- Information Overscale
- Larger scale ENC Available
- No ENC available
- Customized display
- Cross a danger in route monitoring mode
- Route planning across specified area
- Route planning across safety contour
- System test failure
- Different reference system
What are required sensors of ECDIS? - ANS - Heading
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,- Speed
- Position
Radar is required to be connected to ECDIS? - ANS Radar is not required
What are the methods of loading chart data? - ANS - Automatically
- Manually from the present route
- Manually from the total portfolio
- Manually displayed by the cursor position
If the ECDIS is using raster charts, which mode is it in? - ANS RCDS
Who is responsible for setting the safety contour in the ECDIS? - ANS Watch Officer
Which safety parameter is used for generating anti-grounding alarms? - ANS Safety Contour
The ECDIS can emphasize soundings equal to or less than the ___________ when every spot
soundings are selected for display. - ANS Safety Depth
Do the shallow and deep contours generate anti-grounding alarms? - ANS No, there are no
alarms/indications associated with the shallow and deep contours. The shallow and deep
contours are only for information and enhance the chart display.
ECDIS is comprised of? - ANS Hardware, Software, and Data
What are the chart display categories? - ANS Base, Standard, and All
Is true motion optional, or required? - ANS Per IMO standards, true motion is required.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, The ownship is displayed as a ______ on the SENC. - ANS The own ship is displayed as either
a symbol or true scale by ECDIS.
The radar image and the position for the position sensor should be adjusted automatically for
antenna offset from which of the following? - ANS Conning Position (CCRP)
Which of the following would not be an effective way to cross-check the accuracy of the vessel's
position on ECDIS? - ANS Switching the ECDIS into DR mode.
The abbreviation HDOP stands for? - ANS Horizontal Dilution of Precision
What is the diagnostic function of the GPS receiver that tests the accuracy of the GPS signal? -
ANS RAIM
Is GPS or DGPS more accurate? - ANS DGPS
The abbreviation PDOP stands for? - ANS Position Dilution of Precision
The higher the DOP value, the ______ accurate the position. - ANS Less
The accuracy of chart data is dependent on? - ANS The Accuracy of survey and all
hydrographic data, Shifting of Buoys, and Coverage and completeness of chart data.
ENCs should be referred to which geodetic datum? - ANS WGS 84
Are ENC's allowed to overlap within the same usage band? - ANS The IHO, through S-57
prohibits ENC from overlapping within the same navigational purpose/usage bands.
The Transas ECDIS allows for charts to be display by? - ANS Charts can be displayed by the
complete list or by position
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
