Each country produces data for its own area of jurisdiction, i.e. the internal
waters, coastal sea, and continental shelf.
It is the purpose IHO's WEND
concept (Worldwide Electronic Navigational Chart Database) to establish a network
of standardized ENCs meeting the requirements of international maritime transport.
In Europe, two Regional Electronic Navigational Chart Coordinating Centres
(RENC) exist presently which receive ENCs from the national hydrographic services,
fit them into the total body of data, and distribute them to the end-users via
IC-ENC in Taunton, UK
The official digital data (ENCs) of the BSH for ECDIS (Electronic Chart Display
and Information System) are distributed by the IC-ENC (International Centre
for ENCs) in Taunton, UK.
The IC-ENC in Taunton distributes
the ENCs via VARs (Value Added Reseller). Those are:
The second RENC for distribution of ENCs is PRIMAR Stavanger in Norway.