# 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 2.1.3: Performance test interface

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

A navigation system provider shall equip navigation systems during the compliance test with a standard IEC 61162-1 interface sending the position and heading information used by the navigation system. This information shall be encoded by IEC 61162-1 sentences (see the document referred to in point 2(k) of Section 1) known as GGA (Global Positioning System Fix Data) and HDT (Heading True). Additional sentences like RMC (Recommended Minimum Navigation Information), ROT (Rate Of Turn) and VTG (Track made good and Ground speed) are accepted.
Those strings shall be sent preferably every 0,1 second, at least every second. Position and heading shall be according to the definitions in Chapter 2.1.1.1 and Chapter 2.1.1.2 of this Section.

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Source: https://www.legislation.gov.uk/eur/2018/1973/annex/division/ELECTRONIC/section/4A/division/2/division/2.1/division/2.1.3 (the official version)
Page: https://openlegislation.uk/eu-regulation-2018-1973/annex/division-ELECTRONIC/section-4A/division-2/division-2.1/division-2.1.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.