Imo and ecdis mandating Free randomcam
S-63 defines the technical details for the particular method of encryption used, as well as operating procedures for charts display systems to use S-63 charts.An S-63 chart is simply a S-57 chart that has been encrypted.Each feature is georeferenced to points, lines, or areas defined around latitude and longitude positions.In this way, the ENC defines all the building blocks necessary to compile a chart image.However, such vector charts are not ENCs as the data contained in an ENC must be issued by an authorized Hydrographic Office.Just over half of IHO’s 80 member states issue data through a national hydrographic office.
In order to meet SOLAS requirements, those ENCs must be official ENCs. The International Hydrographic Organization (IHO) lays it out like this: Electronic charts currently take two forms: Electronic Navigational Charts (ENCs) and Raster Navigational Charts (RNCs).ENCs, by contrast, are files containing a database of chart features and georeferenced data, called “vector” charts.Essentially, ENCs contain all the building blocks necessary to compile a chart image without containing the image itself.Shipowners should be embracing new electronic navigation technology rather than fearing it because it is safer and is where the industry is heading, according to the world's leading hydrographer.Rear Admiral Ian Moncrieff, who heads the United Kingdom Hydrographic Office (UKHO), is rejecting industry concerns that mandatory requirements for Electronic Chart Display and Information System (ECDIS) have come too early and could lead to accidents.
Once an S-63 chart is decrypted, it is essentially an S-57 chart.