COMPREHENSIVE MARINE
NAVIGATION SYSTEMS: ECDIS,
CHARTS, AND GPS. EXAM QUESTIONS
AND ANSWERS 100% PASS
What is the harmonized collection, integration, exchange, presentation, and analysis of marine
information called? - ANS Electronic Navigation
What is the basic level of capability navigation information system that does not meet IMO
standards? - ANS Electronic Charting Systems
What navigation information system has an advanced level of capability and meets IMO
standards? - ANS Electronic Chart Display and Information System (ECDIS)
For the US Navy, which system can only be used for situational awareness and not navigation? -
ANS Electronic Charting Systems
On which types of vessels will you typically find Electronic Charting Systems? - ANS Pleasure
Crafts, Sailing Vessels, and Small Fishing Vessels
What is mandated equipment in vessels of certain types/sizes? - ANS Electronic Chart Display
and Information System (ECDIS)
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,What are the functional requirements of ECDIS? - ANS Display, Customize Display,
Customizable Scale, Fused Information, Adequate redundancy and Back Up, Route Planning,
Route Monitoring, Automatic Grounding Avoidance, Recording: BLACK BOX, Tests, Alarms and
Indications
What are the sensor inputs for ECDIS? - ANS GPS, INS, Gyrocompass, Fathometer, Radar, AIS,
Anemometer, Speed Log, Current info, Tides info
Is Voyage Management System (VMS) certified for use on U.S. Navy ships? - ANS True
What additional features does ECDIS-N have? - ANS Display RADAR, system-to-system
interoperability, read and display Digital Nautical Charts, Future Position Estimate, Collision
Avoidance
Are electronic charts representations of navigational data encoded in a computer-usable
format? - ANS True
Where can the requirements for carriage of charts be found? - ANS SOLAS Chapter 5
What types of electronic charts are approved for use in ECDIS? - ANS Raster Charts (RNC) and
Vector Charts (ENC and DNC)
What are two advantages of ECDIS? - ANS Real-time position positioning presented visually,
Automated plotting including when GPS is not available
What are two disadvantages of ECDIS? - ANS Over-reliance on information provided, Poor
GPS performance including Spoofing/Jamming
What is a digitized image of a chart called? - ANS Raster Charts (RNC)
What are Vector Charts characterized by? - ANS Data organized into many separate files and
layers
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, What are Electronic Nautical Charts (ENC)? - ANS Vector charts that conform to the S-57 data
standard
What are Digital Nautical Charts (DNC)? - ANS Vector charts that conform to the DOD Vector
Product Format (VPF) standard
What are the four DNC categories based on chart scale, from smallest to largest? -
ANS General, Coastal, Approach, and Harbor
Do small scale charts cover a large area but lack detail? - ANS True
Do large scale charts cover a small area but have the most detail? - ANS True
How many regions are DNCs divided into? - ANS 29
What is an Integrated Bridge System (IBS)? - ANS A combination of equipment and software
for navigational information
Is Navigation Sensor System Interface (NAVSSI) the US Navy's version of IBS? - ANS True
Who provides ENC updates? - ANS Distributing agencies like NOAA, UKHO, etc.
Can NOAA ENC updates be downloaded and applied directly to the ECDIS node? - ANS True
Who provides DNC updates? - ANS NGA
What remains the primary position source for all phases of navigation? - ANS Global
Positioning System (GPS) fixes
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
NAVIGATION SYSTEMS: ECDIS,
CHARTS, AND GPS. EXAM QUESTIONS
AND ANSWERS 100% PASS
What is the harmonized collection, integration, exchange, presentation, and analysis of marine
information called? - ANS Electronic Navigation
What is the basic level of capability navigation information system that does not meet IMO
standards? - ANS Electronic Charting Systems
What navigation information system has an advanced level of capability and meets IMO
standards? - ANS Electronic Chart Display and Information System (ECDIS)
For the US Navy, which system can only be used for situational awareness and not navigation? -
ANS Electronic Charting Systems
On which types of vessels will you typically find Electronic Charting Systems? - ANS Pleasure
Crafts, Sailing Vessels, and Small Fishing Vessels
What is mandated equipment in vessels of certain types/sizes? - ANS Electronic Chart Display
and Information System (ECDIS)
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,What are the functional requirements of ECDIS? - ANS Display, Customize Display,
Customizable Scale, Fused Information, Adequate redundancy and Back Up, Route Planning,
Route Monitoring, Automatic Grounding Avoidance, Recording: BLACK BOX, Tests, Alarms and
Indications
What are the sensor inputs for ECDIS? - ANS GPS, INS, Gyrocompass, Fathometer, Radar, AIS,
Anemometer, Speed Log, Current info, Tides info
Is Voyage Management System (VMS) certified for use on U.S. Navy ships? - ANS True
What additional features does ECDIS-N have? - ANS Display RADAR, system-to-system
interoperability, read and display Digital Nautical Charts, Future Position Estimate, Collision
Avoidance
Are electronic charts representations of navigational data encoded in a computer-usable
format? - ANS True
Where can the requirements for carriage of charts be found? - ANS SOLAS Chapter 5
What types of electronic charts are approved for use in ECDIS? - ANS Raster Charts (RNC) and
Vector Charts (ENC and DNC)
What are two advantages of ECDIS? - ANS Real-time position positioning presented visually,
Automated plotting including when GPS is not available
What are two disadvantages of ECDIS? - ANS Over-reliance on information provided, Poor
GPS performance including Spoofing/Jamming
What is a digitized image of a chart called? - ANS Raster Charts (RNC)
What are Vector Charts characterized by? - ANS Data organized into many separate files and
layers
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, What are Electronic Nautical Charts (ENC)? - ANS Vector charts that conform to the S-57 data
standard
What are Digital Nautical Charts (DNC)? - ANS Vector charts that conform to the DOD Vector
Product Format (VPF) standard
What are the four DNC categories based on chart scale, from smallest to largest? -
ANS General, Coastal, Approach, and Harbor
Do small scale charts cover a large area but lack detail? - ANS True
Do large scale charts cover a small area but have the most detail? - ANS True
How many regions are DNCs divided into? - ANS 29
What is an Integrated Bridge System (IBS)? - ANS A combination of equipment and software
for navigational information
Is Navigation Sensor System Interface (NAVSSI) the US Navy's version of IBS? - ANS True
Who provides ENC updates? - ANS Distributing agencies like NOAA, UKHO, etc.
Can NOAA ENC updates be downloaded and applied directly to the ECDIS node? - ANS True
Who provides DNC updates? - ANS NGA
What remains the primary position source for all phases of navigation? - ANS Global
Positioning System (GPS) fixes
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
