File Extension 031

.031 File

File extension: 031
File type: Electronic Navigation Chart


Notes about the 031 file extension:



Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.

The 031 file type is primarily associated with 'International S-57 Hydrographic Data' by US NOAA / US Army Corps of Engineers. A vector-based digital file containing marine features suitable for marine navigation. The file is based on the International Hydrographic Organization (IHO) S-57 standard. The file extension, ".000," for a base NOAA ENC cell is used for updating. The first update for a cell will be ".001" the next ".002" and so forth. The file extension .031 is used for catalog data (metadata) relating to the chart data.

Detailed information for file extension 031:


Primary association: International S-57 Hydrographic Data
Company: US NOAA / US Army Corps of Engineers
File classification: Graphic
Related links: CARIS Easy-ENC Viewer, NavPak Demo, Fugawi View ENC

Other applications associated with file type 031:

  • Unknown Apple II File ((found on Golden Orchard Apple II CD Rom))



Important: Invalid file associations could be the result of underlying issues within your Windows PC. It is highly recommended that you scan your PC for invalid registry entries, unused processes and other slowdown issues.
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