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Electronic Navigational Charts ENCs

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Title: Electronic Navigational Charts ENCs


1
Electronic Navigational Charts(ENCs)
Captain Jim Gardner Chief, Marine Chart
Division Office of Coast Survey National
Ocean Service
2
Nautical Charting Products
  • Suite of over 1000 paper charts
  • Raster Charts
  • Print on Demand Charts
  • Update Service
  • Electronic Navigational Charts (NOAA ENCs)

3
Nautical Charting - Brief History
1994 Rasterized full suite of paper charts
1997 NOAAs first ENCs Collected (in house)
1999 Contracting out for ENC collection
2000 Raster Update Service became operational
2001 ENCs become available to Public 2003 ENCs
Become Official (Usable for Navigation)
2004 399 ENCs on Coast Survey Web site for
Download
4
Raster vs. ENC
A digital picture vs. A
geo-referenced database
5
Why Build ENCs?
  • Conformance to International Standards
  • Non-proprietary, publicly available
  • IMO compliant
  • Data used in ECDIS ECS
  • Power of Vector Data
  • Navigation Software can interact with data
  • Provide mariners Look-ahead capabilities
    warnings
  • Configurable displays
  • Meet Accuracy Demands of Mariners in 21st century

6
MARINE TRANSPORTATION SYSTEM REPORT Report to
Congress in September 1999
  • The volume of domestic and international trade is
    expected to double over the next 20 years.
  • NOAA and USACE should explore
  • Expanding Electronic Navigational
  • Chart (ENC) coverage,
  • Incorporating the latest hydrographic and
    shoreline survey information,
  • Enhancing the ENC with high resolution depth
    information and very-large-scale source data

7
Approach to Building ENCs
  • Phase One
  • Limit coverage to 40 major commercial ports
  • 200 ENCs - 99 Completed
  • Phase Two
  • Seamless ENC Coverage Between US Ports
  • 200 ENCs - 60 Complete
  • Phase Three
  • All remaining US waters
  • 560 ENCs - 40 Complete
  • 968 ENCs to give 100 coverage

8
ENC Data
  • Integrating data from
  • different sources
  • Inshore depth areas
  • obstructions
  • New channel information
  • Updated Aids to
  • Navigation

9
ENC Data
10
USCG/NOAA Partnership
  • MOA signed in 2001
  • ENC Co-Production
  • NOAA Baseline ATON database
  • NOAA checks USCG LNM before publication,
  • reduction in error rate from 10 to

11
Working with the USACE
  • Build Federal channel framework
  • Expedite controlling depth reporting
  • Receive channel conditions surveys in compatible
    format

12
High Accuracy Source
  • Digital Shoreline
  • NOAA Hydrographic Surveys
  • USACE Dredge
  • Surveys

13
ENC Maintenance
  • Start out with monthly critical updates
  • Goal is to provide weekly updates
  • Integrate non-critical source as received
  • Implement incremental updates

14
ENC Maintenance
  • Maintaining an ENC is much
  • more intensive, requiring
  • more human resources than
  • the Raster chart
  • While developing ENC product line MCD must also
    continue to publish its other chart products

15
Build and maintain an ENC suite
  • Contract for

Quality Control of all work performed by a
contractor is done by NOAA Cartographers
  • Building
  • Validation
  • Maintenance
  • IT Support

16
Build and maintain an ENC suite
  • Single Compiled Source Database
  • ENC database to product all chart products
  • Ensure consistency between products
  • Free up resources
  • Shorter update cycle

17
Data Distribution
  • NOAA ENCs are Free on the web
  • Get the ENC data in the most hands, end users and
    developers
  • Per the HSIA Developing a certification program
    for private sector, value added products and
    services, using NOAA data

Over 1.6 Million ENCs Downloaded since July 2001
18
ENC Direct - the GIS Solution
19
Challenges
  • Marketing - The ENC is a new, better, Next
    Generation product. We need to improve the
    awareness in the maritime community.
  • Training The ENC is a complex new tool, with
    many new options capabilities. The mariners
    needs guidance on how to use it properly, what it
    provides and what it doesnt.
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