IENC Product Specification 2.2

The Inland ENC Product Specification edition 2.2 is a set of specifications intended to enable chart producers to produce a consistent Inland ENC, and manufacturers to use that data efficiently in an Inland ECDIS that satisfies the Performance Standard for Inland ECDIS (Section 1). An Inland ENC must be produced in accordance with the rules defined in this Specification and must be encoded using:

  • the Inland ENC Feature Catalogue and
  • the rules described in the Inland ENC Encoding Guide

The Inland ENC Product Specification edition 2.2 has been adopted by the Inland ENC Harmonization Group (IEHG) and is applicable in North and South America, Russia and Europe. It is intended, that the Product Specification meets the basic needs for Inland ENC applications worldwide. An XML editor for the production of the external xml-files that are mentioned in the Encoding Guide is available at facility_editor
The username and password can be obtained by e-mail from ienc(a)

The attributes 18020 lc_lg1, 18018 lc_bm1 and 18019 lc_bm2 have been deleted in edition 2.3 because they have never been used by chart producers. The numerical codes have been reused for other attributes in edition 2.4. IEHG advises application builders who are using combined Feature Catalogues covering several Editions to delete the three old attributes from their catalogues.