NOAA provides free nautical charts in two formats:
1) "NOAA Electronic Navigational Charts® (NOAA ENCs) are vector data sets that represent NOAA's newest and most powerful electronic charting product. NOAA ENCs conform with the International Hydrographic Office (IHO) S-57 international exchange format"
2) "NOAA Raster Navigational Charts® (NOAA RNCs) are full-color digital images of NOAA's entire suite of paper charts...in the BSB format."
Does anyone know of any open source routines to use and display these formats in Microsoft's .NET?