DNC Digital Nautical Chart

Digital Nautical Chart (DNC) Description: Digital Nautical Chart is a Vector Product Format (VPF) based database containing maritime features of digitally replicated  

Nautical Charts derived from the National Geospatial-Intelligence Agency's (NGA) hard 
copy of Coastal Charts, Approach Charts, Harbor Charts and General Charts for supporting geographic information systems (GIS) such as our 3D GPS tracking Global Mapper and worldwide marine navigation systems. 

NGA responsible for the Digital Nautical Chart or marine navigation chart, maintenance and VPF updates, is derived from approximately 5,000 charts divided into 29 Geographic Regions and currently available via the NGA Gateway or on 
CD-ROM version.

Digital Nautical Chart approved format VPF was chosen for ease of data manipulation and less data disk storage while allowing hyper linking to various data in simplicity viewing. 

The database features organized into 12 layers or coverage's including:

• Data Quality

• Navigation Aid

• Earth  and Land Cover

• Environment

• Inland Waterways

• Port Facilities

• National Hydrography Dataset

• Limits and Obstructions

• Relief

• Cultural Landmarks

Global Mapper v6.00 and above can load files in this VPF format, either select the dht file at the root of the VPF database tree or select the lht file at a lower level to load just one coverage from the database (latter option is usually useful for Digital Nautical Charts).

Available for free? Yes.

Web Pages and FTP Sites:

Digital Nautical Chart Homepage

NGA Digital Nautical Charts

 

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