ENC creation based on paper charts

The creation of ENC based on paper charts is divided into the following (strongly simplified) steps:

• Scanning of each colour slide of a paper chart (raster data will be edited),
• Georeferencing of the scan,
• Digitising/Vectorizing of the scan (the raster image of the paper chart will be reproduced),
• Convert into S57,
• Optimise the geometry,
• Correlate vectors with S57 objects and assign attributes,
• Implementation of corrections which have been published during the process.

Finally, the ENC has to be checked and validated. Only ENCs which have passed both check and validation can be used for navigation.