Optional use of ECDIS
There are differences in the type and quality of data being sold. While many companies
take care in the production of electronic chart data to ensure both completeness and
accuracy, this cannot be assumed for all.
In 2003 ISO issued a specific standard for private chart data; this standard was produced
on the initiative of the industry: ISO 19379 applies to both private vector charts and to
private raster charts. Chart data certified according to ISO19379, is now available on the
market.
Chart data published by private companies is entirely under the product liability of the
producing company. The responsibility and product liability for official charts rests with
the government of the producing nation.
Private chart data, regardless of the format in which it is supplied to the market does not
meet the requirements specified by the IMO Performance Standards for ECDIS.
annaabi.ee 
