IEC 61174:2008

IEC 61174
Edition 3.0 2008-09
INTERNATIONAL
STANDARD
Maritime navigation and radiocommunication equipment and systems –
Electronic chart display and information system (ECDIS) – Operational and
performance requirements, methods of testing and required test results

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: inmail@iec.ch
Web: www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
ƒ Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
ƒ IEC Just Published: www.iec.ch/online_news/justpub
Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
ƒ Electropedia: www.electropedia.org
The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
ƒ Customer Service Centre: www.iec.ch/webstore/custserv
If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service
Centre FAQ or contact us:
Email: csc@iec.ch
Tel.: +41 22 919 02 11
Fax: +41 22 919 03 00
IEC 61174
Edition 3.0 2008-09
INTERNATIONAL
STANDARD
Maritime navigation and radiocommunication equipment and systems –
Electronic chart display and information system (ECDIS) – Operational and
performance requirements, methods of testing and required test results

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XE
ICS 47.020.70 ISBN 978-2-88910-432-1
– 2 – 61174 © IEC:2008(E)
CONTENTS
FOREWORD.6
1 Scope.8
2 Normative references .8
3 Terms, definitions and abbreviations .9
3.1 Definitions .10
3.2 Abbreviations .13
4 Minimum operational and performance requirements.13
4.1 General .13
4.2 ECDIS definitions .14
4.3 Display of SENC information .14
4.3.1 SENC .14
4.3.2 Warning indication.14
4.3.3 Categories of display.15
4.3.4 Safety contour .15
4.3.5 Safety depth .15
4.3.6 Information content.15
4.3.7 Verification and updates .15
4.3.8 Information about chart objects.16
4.3.9 Display scale .16
4.4 Provision and updating of chart information .16
4.4.1 Contents of the SENC .16
4.4.2 Updates.16
4.5 Scale.17
4.6 Display of other navigational information .17
4.6.1 Common reference system .17
4.6.2 Radar and plotting information.17
4.7 Display mode and generation of the neighbouring area .17
4.8 Colours and symbols .18
4.9 Display requirements.18
4.9.1 Route planning and monitoring .18
4.9.2 Chart presentation size.18
4.9.3 Colour and resolution .18
4.9.4 Presentation .18
4.9.5 Removal of information categories.19
4.10 Route planning, monitoring and voyage recording .19
4.10.1 General .19
4.10.2 Route planning .19
4.10.3 Route monitoring .19
4.10.4 Position integration.20
4.10.5 Object information .21
4.10.6 LOP position fix .21
4.10.7 Voyage recording .21
4.11 Calculations and accuracy.22
4.12 Connections with other equipment (interfaces) .22
4.13 Performance tests, malfunction alarms and indications.23
4.14 Back-up arrangements .23

61174 © IEC:2008(E) – 3 –
4.15 Power supply.23
4.16 Software maintenance.24
5 Requirements contained in IHO special publications.24
5.1 Content and structure of chart data .24
5.2 Priority of chart display.24
5.3 Display of chart information .25
5.3.1 Scale and navigation purpose.25
5.3.2 Text.25
5.3.3 Units and legend .26
5.4 Display functions .26
5.4.1 Object information .26
5.4.2 Navigational information .26
5.4.3 Safety contour .27
5.4.4 Navigational calculations .27
5.4.5 Date-dependant ENC objects .27
5.5 Supplementary display functions .28
5.5.1 Additional mariner’s information.28
5.5.2 Additional non-HO information.28
5.5.3 Tidal adjustment .28
5.6 Use of the presentation library.29
5.6.1 Presentation library .29
5.6.2 Test diagrams.29
5.7 Display characteristics .29
5.7.1 Display base.29
5.7.2 Navigators notes .29
5.8 Performance requirements .30
5.8.1 Redraw.30
5.8.2 Resolution .30
5.8.3 Symbols .30
5.8.4 Number of colours .30
5.8.5 Brightness and contrast .30
5.9 Ergonomic requirements.31
5.9.1 Mode and orientation.31
5.9.2 Windows.31
5.9.3 Mariner’s information panel .31
5.10 Update of chart information .31
5.10.1 General .31
5.10.2 Manual update .32
5.10.3 Semi-automatic update.33
5.10.4 Reception of updates .33
5.10.5 Sequence check.33
5.10.6 Consistency check .34
5.10.7 Geographic applicability .34
5.10.8 Summary report .34
5.10.9 Review of ENC updates.34
5.10.10 Modification of updates .34
6 Methods of testing and required test results .34
6.1 EUT installation, technical documentation, and test requirements.34
6.2 Interfaces .35

– 4 – 61174 © IEC:2008(E)
6.3 General requirements and presentation requirements.35
6.3.1 General requirements .35
6.3.2 Presentation requirements.35
6.4 Preparation .36
6.4.1 Power-up.36
6.4.2 Initial ship parameters .36
6.4.3 Required test items .
...