[ginginsman]

For a complete overview about ENCs charts (S-57 format), you may download one of these two PDFs :
[url=http://francis.fustier.free.fr/Forums/ENC_English.pdf]English version
[url=http://francis.fustier.free.fr/Forums/ENC_French.pdf]French version

Excellent article. I've used a couple of Windoze ENC viewers to look at S-57 charts, and indeed, as pointed out here before, the appearance is not nearly as useful in the traditional manner of the raster/BSB charts.

Hypack has a good article here about S-57 basics
http://www.hypack.com/newsletter/5_03/pat_1.htm
and they appear to offer an editor as well (Windoze-based):
http://www.hypack.com/hypack.asp

Does anyone know how one "enhances" S-57's? When adding a waypoint, is it added to the digital data in the S-57 chart? Are there other editors for making one's own enhancements? Is there a good URL for learning this kind of thing about S-57's?