Podcast
Questions and Answers
What does the 3rd digit in an ENC Cell name such as FR402424 refer to?
What does the 3rd digit in an ENC Cell name such as FR402424 refer to?
When using a VECTOR chart display, what option is available?
When using a VECTOR chart display, what option is available?
Which of the following options is possible when using a RASTER chart system?
Which of the following options is possible when using a RASTER chart system?
What is possible when using a VECTOR chart display?
What is possible when using a VECTOR chart display?
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When entering the last known position from a GPS as a secondary sensor, what can be observed?
When entering the last known position from a GPS as a secondary sensor, what can be observed?
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On which horizontal datum are ENC charts and GPS coordinates based?
On which horizontal datum are ENC charts and GPS coordinates based?
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Which of the following is not a requirement of the IMO performance standard for ECDIS?
Which of the following is not a requirement of the IMO performance standard for ECDIS?
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What is the primary function of ECDIS?
What is the primary function of ECDIS?
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Which organization is responsible for setting the performance standards of ECDIS?
Which organization is responsible for setting the performance standards of ECDIS?
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Which organization is responsible for setting the standards of Electronic Navigational Charts?
Which organization is responsible for setting the standards of Electronic Navigational Charts?
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What information must be displayed on the base layer of an ENC chart?
What information must be displayed on the base layer of an ENC chart?
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Which of the following IHO standards covers the displayed colors used on ENC charts?
Which of the following IHO standards covers the displayed colors used on ENC charts?
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What will generate an indication but no alarm on ECDIS?
What will generate an indication but no alarm on ECDIS?
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What is a potential risk associated with using ECDIS?
What is a potential risk associated with using ECDIS?
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Which organisation is responsible for setting standards for ECDIS hardware?
Which organisation is responsible for setting standards for ECDIS hardware?
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Which statement is accurate regarding Raster Navigational Charts (RNCs) with ECDIS while sailing under the UK flag?
Which statement is accurate regarding Raster Navigational Charts (RNCs) with ECDIS while sailing under the UK flag?
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What does ECDIS stand for?
What does ECDIS stand for?
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What type of chart should be used for ECDIS to be considered fully compliant?
What type of chart should be used for ECDIS to be considered fully compliant?
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Which statement is true regarding the IMO performance standards for ECDIS?
Which statement is true regarding the IMO performance standards for ECDIS?
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What is the main function of a vector chart?
What is the main function of a vector chart?
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What does DOP (dilution of precision) depends on?
What does DOP (dilution of precision) depends on?
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What is the correct interpretation of a safety contour in ECDIS?
What is the correct interpretation of a safety contour in ECDIS?
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In which situation must ECDIS trigger an alarm?
In which situation must ECDIS trigger an alarm?
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What is a Regional ENC Coordination Centre (RENC) responsible for?
What is a Regional ENC Coordination Centre (RENC) responsible for?
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Which of the following inputs is essential for ECDIS?
Which of the following inputs is essential for ECDIS?
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How should ENC updates be performed?
How should ENC updates be performed?
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Which is not a function available for route planning using ECDIS?
Which is not a function available for route planning using ECDIS?
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What is the purpose of a RENC?
What is the purpose of a RENC?
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Which of the following is NOT a feature of ECDIS?
Which of the following is NOT a feature of ECDIS?
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What is the minimum requirement for voyage recording with ECDIS? "
What is the minimum requirement for voyage recording with ECDIS? "
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Which of the following best describes a vector chart?
Which of the following best describes a vector chart?
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The symbol "U" found on an ENC chart indicates:
The symbol "U" found on an ENC chart indicates:
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What is the purpose of the PERMIT.TXT file in ECDIS?
What is the purpose of the PERMIT.TXT file in ECDIS?
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What may affect the DOP (dilution of precision) figure?
What may affect the DOP (dilution of precision) figure?
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What is the function of the secondary sensor in an ECDIS?
What is the function of the secondary sensor in an ECDIS?
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In which situation(s) does ECDIS need to trigger an alarm?
In which situation(s) does ECDIS need to trigger an alarm?
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What could affect the accuracy of data presented on an ENC chart?
What could affect the accuracy of data presented on an ENC chart?
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What is the primary purpose of a Raster Navigational Chart?
What is the primary purpose of a Raster Navigational Chart?
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Which of the following data categories CAN be shown on an ENC?
Which of the following data categories CAN be shown on an ENC?
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In case of an EPFS malfunction during a passage in a busy narrow channel, the mariner should:
In case of an EPFS malfunction during a passage in a busy narrow channel, the mariner should:
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According to the ECDIS Performance Standard, how is an alarm announced?
According to the ECDIS Performance Standard, how is an alarm announced?
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What is the nature of the alarm triggered when a ship deviates from the planned route?
What is the nature of the alarm triggered when a ship deviates from the planned route?
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Voyage recording files in ECDIS must be stored in a way that they:
Voyage recording files in ECDIS must be stored in a way that they:
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Flashcards
VECTOR chart customization
VECTOR chart customization
A VECTOR chart display allows users to customize the layers of displayed data, providing a personalized view of the chart.
VECTOR chart pick report
VECTOR chart pick report
On a VECTOR chart display, users can access detailed information about specific charted objects through a feature known as a 'pick report'.
RASTER chart display
RASTER chart display
A RASTER chart system displays a digital image of a paper chart, preserving the original layout and details.
ENC Cell name - 3rd digit
ENC Cell name - 3rd digit
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RASTER chart zoom feature
RASTER chart zoom feature
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Which horizontal datum do ENCs and GPS coordinates use?
Which horizontal datum do ENCs and GPS coordinates use?
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Define an Electronic Navigational Chart (ENC) System.
Define an Electronic Navigational Chart (ENC) System.
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Who sets performance standards for ECDIS?
Who sets performance standards for ECDIS?
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What organization sets standards for Electronic Navigational Charts (ENCs)?
What organization sets standards for Electronic Navigational Charts (ENCs)?
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What is the primary function of ECDIS?
What is the primary function of ECDIS?
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Which IHO standard defines the structure and content of ENCs?
Which IHO standard defines the structure and content of ENCs?
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Which IHO standard covers the presentation of raster navigational charts (RNCs)?
Which IHO standard covers the presentation of raster navigational charts (RNCs)?
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Which IMO standard covers the presentation of RNCs?
Which IMO standard covers the presentation of RNCs?
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What is a RENC?
What is a RENC?
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What is a Raster Navigational Chart (RNC)?
What is a Raster Navigational Chart (RNC)?
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What are Raster Navigational Charts based on?
What are Raster Navigational Charts based on?
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What triggers an alarm in ECDIS?
What triggers an alarm in ECDIS?
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What is a Vector Chart?
What is a Vector Chart?
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What can affect 'DOP' ?
What can affect 'DOP' ?
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What does the symbol 'U' on an ENC chart represent?
What does the symbol 'U' on an ENC chart represent?
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How should voyage recording files in ECDIS be stored?
How should voyage recording files in ECDIS be stored?
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What is the minimum voyage recording requirement for ECDIS?
What is the minimum voyage recording requirement for ECDIS?
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What is an ENC best described as?
What is an ENC best described as?
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What information can an ECDIS display?
What information can an ECDIS display?
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How does an ECDIS alarm function?
How does an ECDIS alarm function?
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What is the PERMIT.TXT file used for?
What is the PERMIT.TXT file used for?
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What is the backup requirement when using ECDIS as the primary means of navigation?
What is the backup requirement when using ECDIS as the primary means of navigation?
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Safety Contour?
Safety Contour?
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Range on a chart
Range on a chart
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North Arrow
North Arrow
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DOP (Dilution of Precision)
DOP (Dilution of Precision)
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Who sets ECDIS standards?
Who sets ECDIS standards?
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What is ECDIS?
What is ECDIS?
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Vector Chart
Vector Chart
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How to update ENCs?
How to update ENCs?
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Raster Chart
Raster Chart
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What are the minimum sensor inputs for ECDIS?
What are the minimum sensor inputs for ECDIS?
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What is ECDIS and why is it important?
What is ECDIS and why is it important?
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Raster Navigational Chart specifications?
Raster Navigational Chart specifications?
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Potential Risks of using ECDIS
Potential Risks of using ECDIS
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What route planning features are NOT available in ECDIS?
What route planning features are NOT available in ECDIS?
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Study Notes
Horizontal Datums for ENCs and GPS
- ENC charts and GPS coordinates are based on WGS-84.
IMO ECDIS Performance Standard Requirements
- ECDIS must continuously plot the ship's position.
- ECDIS must provide means to display alarms related to system and input device performance.
- ECDIS must allow route planning and monitoring.
- ECDIS should not degrade the performance of sensor inputs
- An ECDIS should not provide any system related alarms
Electronic Navigational Chart (ENC) Definitions
- An ENC is a database of information in a manufacturer's internal format, containing ENC content and updates.
Responsibilities for Chart Standards
- International Maritime Organization (IMO) sets ECDIS performance standards.
- International Hydrographic Organization (IHO) sets Electronic Navigational Chart (ENC) standards.
ECDIS Primary Function
- The primary function of ECDIS is to contribute to safe navigation.
Chart Types and Standards
- Vector charts are databases of individual objects and attributes, following IHO S-57 standards, and are digitised versions of corrected paper charts.
ENC Chart Information Requirements
- The base layer of an ENC chart must display coastline, safety contours, floating navigation marks, scale, range & north arrow, depth & height units, and display modes.
Potential ECDIS Risks
- Users may over-rely on ECDIS and not account for potential inaccuracies.
ECDIS Route Planning
- ECDIS includes automatic waypoint plotting to avoid dangers, manual waypoint input, but does not include adjustment of solely parameters.
ECDIS Operational Modes
- Chart information layers can be selected by the mariner in ECDIS mode.
ECDIS Hardware and Testing Standards
- The International Electrotechnical Commission (IEC) sets standards for ECDIS hardware testing.
Chart Data Display
- Vector charts show layers of data that can be hidden for reducing display clutter.
Using Raster Charts with ECDIS (Under UK Flag)
- Raster charts can be used if suitable vector data is unavailable, after a risk assessment.
Vector Chart Structure
- A compliant vector chart is a digitized, corrected paper chart, or a database of official data that conforms to IHO S-57 standard.
IHO Standards for Vector Chart Data Transfer
- IHO S-57 standard covers the data transfer and database format of vector charts.
GPS Sensor Interface with ECDIS
- The antenna position of a GPS sensor must be entered into the ECDIS system settings for accurate data.
Chart Type for ECDIS Compliance
- ENCs are the required type of chart for full ECDIS compliance.
Minimum ECDIS Sensor Inputs
- The minimum sensor inputs for ECDIS are a position system, heading, and speed.
Non-Compliant ECDIS Systems
- Systems that fail to meet IMO standards are not considered ECDIS.
ENC Chart Update Sources
- Encs should be updated using corrections supplied by RENC (Regional ENC Co-ordination Centre).
ECDIS Acronym Definition
- ECDIS stands for Electronic Chart Display and Information System.
RENC (Regional ENC Co-ordination Centre) Role
- RENC ensures uniformity in format and distribution of ENCs and updates.
Raster Navigational Chart Standards
- Raster charts conform to international hydrographic office specifications.
ECDIS Alarm Triggers
- ECDIS alarms are triggered when the vessel is predicted to cross a safety contour, cross the boundary of a prohibited area, or exceed a specified cross-track limit from a planned route.
ECDIS Data Types
- Vector charts are databases of individually captured chart objects (features) with geographical positions.
DOP (Dilution of Precision) Factors
- Factors affecting DOP include poor satellite geometry, out-of-date charts, and clocks using the wrong timezone.
ENC Chart Accuracy Symbol Interpretation
- This symbol on an ENC chart represents an accuracy assessment, which may indicate either low accuracy surveys, depth anomalies, or quality not assessed.
ECDIS Voyage Recording Requirements
- Voyage recording files must be stored, not manipulated, and readily accessed, without edits.
ECDIS Features
- ECDIS features do not include automatic monitoring of distress messages
Voyage Recording Minimum Requirements
- ECDIS voyage recording should record at intervals of no more than 4 hours, with interval not exceeding 1 minute.
ENC Chart Symbol Accuracy Interpretation
- This ENC chart symbol signifies quality assessment for uniform standards, with different levels of reliability.
ENC Data Categories
- ENC charts display data in base layers, custom displays, and other layers.
ECDIS Alarm Categories
- Alarms are set by the navigator for safety contour intersection, anti-grounding depths, and safety depth clearance.
ENC Definition
- ENCs are the official data representations from governmental survey operations and are published by flag state authorities.
EPFS / ECDIS Malfunction Handling
- In case of EPFS malfunction, select an alternate position source as primary or secondary to aid investigation.
Secondary Sensors in ECDIS
- Secondary sensors monitor the primary sensor for overall system integrity.
ECDIS Information Sources
- ECDIS collects information from GPS, AIS, and ARPA systems.
ECDIS Alarm Characteristics
- ECDIS alarms announce conditions requiring attention both visually and/or audibly.
PERMIT.TXT File
- PERMIT.TXT contains the user permit allocated to the ECDIS station to use ENC data.
SOLAS Backup Requirements for ECDIS
- When using ECDIS, paper charts should be used as backup, plotting the complete voyage if ECDIS malfunctions
GPS Position Acquisition Methods
- Ship position can be obtained via the GPS as a primary or secondary sensor, or by manually inputting a last known position.
Vector Chart Display Capabilities
- Vector charts offer multiple scales, interrogating capabilites, and customization.
Raster Chart Display Capabilities
- Raster charts display digital copies of Admiralty paper charts with zoom capabilities but lack data interrogation.
ENC Cell Name Third Digit Meaning
- The third digit in an ENC cell name (e.g., FR402424) represents the country responsible for surveying that area.
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Description
This quiz covers the essential aspects of ECDIS performance standards and Electronic Navigational Charts (ENC). You will learn about the responsibilities of the International Maritime Organization and the International Hydrographic Organization regarding navigation safety and chart standards. Test your knowledge on the significance of horizontal datums and chart types.