IEC 61174:2001

INTERNATIONAL IEC
STANDARD
Second edition
2001-10
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
Reference number
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INTERNATIONAL IEC
STANDARD
Second edition
2001-10
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
 IEC 2001  Copyright - all rights reserved
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 the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
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Commission Electrotechnique Internationale
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International Electrotechnical Commission
For price, see current catalogue

– 2 – 61174 © IEC:2001(E)
CONTENTS
FOREWORD.5

INTRODUCTION.7

1 Scope.8

2 Normative references .8

3 Definitions and abbreviations.9
3.1 Definitions .9
3.2 Abbreviations .11
4 Minimum operational and performance requirements.12
4.1 Introduction .12
4.2 ECDIS definitions .12
4.3 Display of SENC information .13
4.4 Provision and updating of chart information.14
4.5 Scale.15
4.6 Display of other navigational information .15
4.7 Display mode and generation of the neighbouring area .16
4.8 Colours and symbols .16
4.9 Display requirements.16
4.10 Route planning, monitoring and voyage recording .16
4.11 Accuracy .19
4.12 Connections with other equipment (Interfaces) .19
4.13 Performance tests, malfunction alarms and indications.19
4.14 Back-up arrangements .19
4.15 Power supply.20
5 Requirements contained in IHO special publications.20
5.1 Content and structure of chart data .20
5.2 Priority of chart display.20
5.3 Display of chart information .21
5.3.1 Scale and navigation purpose.21
5.3.2 Text.21

5.3.3 Units and legend .22
5.4 Display functions .22
5.4.1 Object information .22
5.4.2 Navigational information .23
5.4.3 Safety contour .23
5.4.4 Navigational calculations .23
5.5 Supplementary display functions .23
5.5.1 Additional mariner’s information.23
5.5.2 Additional non-HO information.24
5.5.3 Tidal adjustment .24
5.6 Use of the presentation library.24
5.7 Display characteristics.24

61174 © IEC:2001(E) – 3 –
5.8 Performance requirements .25

5.8.1 Redraw.25

5.8.2 Resolution .25

5.8.3 Number of colours .25

5.8.4 Brightness and contrast .26

5.9 Ergonomic requirements.26

5.10 Update of chart information .27

5.10.1 General .27

5.10.2 Manual update.28

5.10.3 Semi-automatic update.28

5.10.4 Reception of updates.28
5.10.5 Sequence check .29
5.10.6 Consistency check.29
5.10.7 Geographic applicability .29
5.10.8 Summary report.29
5.10.9 Review of ENC updates.29
5.10.10Modification of updates.29
6 Methods of testing and required test results .29
6.1 EUT installation and technical documentation.29
6.2 Interfaces .30
6.3 Environmental .30
6.4 Preparation .30
6.4.1 Power-up.30
6.4.2 Initial ship parameters .30
6.4.3 Required test items .31
6.5 Initial data tests.31
6.5.1 Presentation library .31
6.5.2 ENC .31
6.6 Accuracy .32
6.7 Visual requirements.32
6.7.1 Symbols .32
6.7.2 Units and legend .32
6.7.3 Colour table.33
6.7.4 Resolution .35
6.7.5 Display characteristics.36

6.8 Functional requirements .36
6.8.1 Standard display.36
6.8.2 Display base.36
6.8.3 All other information .36
6.8.4 Display priorities.36
6.8.5 Additional display functions .37
6.8.6 Scale and navigation purpose.37
6.8.7 Mode and orientation.38
6.8.8 Safety contour .38
6.8.9 Safety depth .38
6.8.10 Object information .38
6.8.11 Navigation related functions .39

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6.8.12 Position integration.39

6.8.13 Radar and plotting information.40

6.8.14 Loading of corrupted data.40

6.8.15 Automatic updates.40

6.8.16 Manual updates .41

6.8.17 Self-tests of major functions .42

6.9 Operational requirements .42

6.9.1 Ergonomic principles .42

6.9.2 Route planning .42

6.9.3 Route monitoring .43

6.9.4 Twelve-hour log.44
6.9.5 Voyage record .
...