IENC Product Specification 2.3

This page conatins the edition 2.3 of the Product Specification for Inland ENCs, which is an annex of the European InlandECDIS Standard Edition 2.3, Section 2.

The Inland ENC Product Specification 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 has been adopted by the Inland ENC Harmonization Group (IEHG) and is applicable in North and South America, Russia, Europe and Asia. 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

The username and password can be obtained by e-mail from

The first versions of the Feature Catalogue which have been published had some errors. A first correction has been produced on 2011-06-07. A second correction has been produced 2013-05-24.
Please do not use edition 2.3 of the Feature Catalogue with earlier issue dates anymore.