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Technical Issues in NOAA's Nautical Chart Program (1996) / Chapter Skim
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Appendix D: Data Formats and Chart Systems
Pages 52-56

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From page 52...
... The application profiles are: new ECDIS information (vector information allowing electronic chart base display) revised ECDIS information (vector information that allows display of electronic chart revisions)
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From page 53...
... Although S-57 will no doubt undergo some future modifications (as do all international standards) , S-57 is currently the most widely adopted spatial data transfer standard in the hydrographic community and the only spatial data standard adopted by the International Hydrographic Organization.
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From page 54...
... Similar to data sets implemented in ISO 8211, VPF is "self-describing," in that its schema definition tables are built into the data content; these schema definition tables can be accessed by spatial and thematic indices whenever they are needed, instead of in strictly sequential order. Therefore, these schema tables can be accessed to determine the design of the database.
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From page 55...
... The final DNC design is thematically layered and topologically structured, supporting a variety of spatial analyses and geographic queries. The digital data in each of the resulting databases may contain as many as four libraries roughly corresponding to four navigation-scale bands (harbor, approach, coastal, and general)
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From page 56...
... Certification procedures for ECDIS equipment are being prepared by the International Electrotechnical Commission, and national hydrographic offices are beginning to produce official ECDIS data sets. An ECDIS receives position data from radio navigation instruments and integrates it with a voyage plan and an "official" hydrographic database to provide a real-time display of the ship's position with respect to the chart and voyage plan.
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Key Terms

  • spatial data
  • nautical chart
  • defense mapping
  • product format
  • definition tables

  • paper charts
  • international hydrographic
  • data model
  • schema definition
  • digital nautical

  • national hydrographic
  • vector product
  • hydrographic office
  • mapping agency
  • gis software

  • vector data
  • hydrographic offices
  • chart display
  • voyage plan
  • international maritime

  • data standard
  • marine navigation
  • data format
  • geographic queries
  • international standards

  • vector information
  • ecdis information
  • geographic data
  • hydrographic organization
  • hydrographic community


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