# Commission Implementing Regulation (EU) 2018/1973 of 7 December 2018 amending Implementing Regulation (EU) No 909/2013 on the technical specifications for the electronic chart display and information system for inland navigation (Inland ECDIS) referred to in Directive 2005/44/EC of the European Parliament and of the Council, Division 4.4: Display of SENC information

Extent: E+W+S+N.I.

(a) The display of SENC information shall be divided into the following three display categories:
Display Base
Standard Display (Standard Information Density)
All Display.
The allocation of the feature classes to the display categories is given in detail in the Look-up Tables of the document referred to in point 2(i) of Section 1 of this Annex.
(b) The Display Base category shall contain at least the following features:
bank of waterway (at mean water level),
shoreline construction (e.g. groin, longitudinal control dam, training wall – any facility that is considered a hazard to navigation),
contours of locks and dams,
boundaries of the fairway/navigation channel (if defined),
isolated dangers in the fairway/navigation channel under water,
isolated dangers in the fairway/navigation channel above water level, such as bridges, overhead wires etc.,
official aids-to-navigation (e.g. buoys, lights and beacons).
(c) The Standard Display (Standard Information Density) category shall contain at least the following features:
the objects of Display Base category,
prohibited and restricted areas,
piers for commercial vessels (cargo and passenger),
kilometre and hectometre or mile marks on the banks.
(d) The All Display category shall display all features that are contained in the Inland SENC, individually on demand.
(e) When starting the Inland ECDIS, it shall come up with the Standard Information Density as defined in the document referred to in point 2(c) of Section 1 and the Glossary of Terms in Section 5 of this Annex.
(f) Inland ECDIS shall be switchable to the Standard Information Density at any time by a single operator action.
(g) Inland ECDIS shall clearly indicate the information density in use at all times.
(h) Time variable depth information in the ENC shall be displayed independently of the three display categories referred to in point (a).

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Source: https://www.legislation.gov.uk/eur/2018/1973/annex/division/ELECTRONIC/section/1/division/4/division/4.4 (the official version)
Page: https://openlegislation.uk/eu-regulation-2018-1973/annex/division-ELECTRONIC/section-1/division-4/division-4.4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.