EN 61174:2008

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Pomorska navigacijska in radiokomunikacijska oprema in sistemi - Prikazovalnik elektronskih kart in informacijski sistem - Zahteve za delovanje in lastnosti, preskusne metode in zahtevani rezultati preskušanja (IEC 61174:2008)Navigations- und Funkkommunikationsgeräte und -systeme für die Seeschifffahrt - Elektronisches Kartendarstellungs- und Informationssystem (ECDIS) - Betriebs- und Leistungsanforderungen, Prüfverfahren und geforderte Prüfergebnisse (IEC 61174:2008)Matériels et systèmes de navigation et de radiocommunication maritimes - Systèmes de visualisation des cartes électroniques et d'information (ECDIS) - Exigences d'exploitation et de fonctionnement, méthodes d'essai et résultats d'essai exigés. (CEI 61174:2008)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 61174:2008)47.020.70Navigacijska in krmilna opremaNavigation and control equipmentICS:Ta slovenski standard je istoveten z:EN 61174:2008SIST EN 61174:2009en01-februar-2009SIST EN 61174:2009SLOVENSKI
STANDARDSIST EN 61174:20041DGRPHãþD

EUROPEAN STANDARD EN 61174 NORME EUROPÉENNE
EUROPÄISCHE NORM November 2008
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2008 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61174:2008 E
ICS 47.020.70 Supersedes EN 61174:2001
English version
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 61174:2008)
Matériels et systèmes de navigation et de radiocommunication maritimes -
Systèmes de visualisation des cartes électroniques et d'information (ECDIS) -
Exigences d'exploitation
et de fonctionnement, méthodes d'essai
et résultats d'essai exigés (CEI 61174:2008)
Navigations- und Funkkommunikationsgeräte
und -systeme für die Seeschifffahrt -
Elektronisches Kartendarstellungs-
und Informationssystem (ECDIS) -
Betriebs- und Leistungsanforderungen, Prüfverfahren
und geforderte Prüfergebnisse (IEC 61174:2008)
This European Standard was approved by CENELEC on 2008-10-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
– 2 – Foreword The text of document 80/535/FDIS, future edition 3 of IEC 61174, prepared by IEC TC 80, Maritime navigation and radiocommunication equipment and systems, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61174 on 2008-10-01. This European Standard supersedes EN 61174:2001. The main changes with respect to EN 61174:2001 are listed below: – EN 61174:2008 incorporates revised performance standards for ECDIS adopted by the IMO as
resolution MSC.232(82) in December 2006; – the test methods have been updated accordingly and new tests added for encrypted ENC data; – the revised IMO performance standards refer to performance standards for displays adopted by the
IMO as resolution MSC.191(79) and these have been incorporated by reference to EN 62288; – Annex E of the previous edition which defined navigation symbols has been deleted as this
information is now in EN 62288; – five new annexes have been added. IMO changed the order of the performance standards in MSC.232(82) compared with the previous standards in resolution A.817(19). Annex N gives a cross-referencing of clause numbering. The following dates were fixed: – latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement
(dop) 2009-07-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow) 2011-10-01 Annex ZA has been added by CENELEC. __________ Endorsement notice The text of the International Standard IEC 61174:2008 was approved by CENELEC as a European Standard without any modification. __________ SIST EN 61174:2009

– 3 – EN 61174:2008
Annex ZA
(normative)
Normative references to international publications with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
NOTE
When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies.
Publication Year Title EN/HD Year
IEC 60945
- 1) Maritime navigation and radiocommunication equipment and systems - General requirements - Methods of testing and required test results EN 60945 2002 2)
IEC 61162 Series Maritime navigation and radiocommunication equipment and systems - Digital interfaces
EN 61162 Series
IEC 62288 - 1) Maritime navigation and radiocommunication equipment and systems - Presentation of navigation-related information on shipborne navigational displays - General requirements, methods of testing and required test results EN 62288 2008 2)
IEC 62388 - 1) Maritime navigation and radiocommunication equipment and systems - Shipborne radar - Performance requirements, methods of testing and required test results EN 62388 2008 2)
IMO SOLAS 1974 International Convention for the Safety of Life at Sea - -
IMO A.424(XI) 1979 Performance standards for gyro-compasses - -
IMO A.694(17) 1991 General requirements for shipborne radio equipment forming part of the global maritime distress and safety system (GMDSS) and for electronic navigational aids - -
IMO A.821(19) 1995 Performance standards for gyro-compasses for high-speed craft - -
IMO A.823(19) 1995 Performance standards for automatic radar plotting aids (ARPAs) - -
IMO A.824(19) 1995 Performance standards for devices to
indicate speed and distance - -
IMO A.830(19) 1995 Code on Alarms and Indicators - -
IMO MSC.191(79) - 1) Performance standards for the presentation
of navigation-related information on shipborne navigational displays - -
IMO MSC.192(79) - 1) Adoption of the revised performance standards for radar equipment - -
1) Undated reference.
2) Valid edition at date of issue.
– 4 – Publication Year Title EN/HD Year
IMO MSC.232(82) 2006 Adoption of the revised performance standards for electronic chart display and information systems (ECDIS) - -
IMO MSC/ Circular 982 2000 Guidelines on ergonomic criteria for bridge equipment and layout - -
IMO SN/ Circular 243 2004 Guidelines for the presentation of navigation related symbols, terms and abbreviations - -
IMO SN.1/ Circular 266 2007 Maintenance of electronic chart display and information system (ECDIS) software - -
IHO M-3 2007 Resolutions of the IHO, Chapter A, Section 3, Technical Resolution 3.11 - -
IHO S-32
appendix 1 - 1) Hydrographic Dictionary - Glossary of ECDIS Related Terms - -
IHO S-52 1996 Specifications for chart content and display aspects of ECDIS - -
IHO S-52
appendix 1 1996 Guidance on updating the electronic navigational chart - -
IHO S-52
appendix 2 2004 Colour and symbol specifications for ECDIS - -
IHO S-57
appendix B.1 2000 ENC product specification - -
IHO S-61 1999 Product specification for raster navigational charts (RNC) - -
IHO S-63 2008 IHO data protection scheme - -
IHO S-64 - 1) Test data sets for ECDIS - -
IEC 61174Edition 3.0 2008-09INTERNATIONAL 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 XEICS 47.020.70 PRICE CODEISBN 2-8318-1001-7
– 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 SIST EN 61174:2009

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 SIST EN 61174:2009

– 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.36 6.5 Initial data tests.36 6.5.1 Presentation library.36 6.5.2 ENC.37 6.5.3 Encrypted ENC.37 6.6 Accuracy.38 6.7 Visual requirements.38 6.7.1 Symbols.38 6.7.2 Units and legend.38 6.7.3 Colour table.39 6.7.4 Resolution.39 6.7.5 Display characteristics.39 6.8 Functional requirements.39 6.8.1 Standard display.40 6.8.2 Display base.40 6.8.3 All other information.40 6.8.4 Display priorities.40 6.8.5 Additional display functions.40 6.8.6 Scale and navigation purpose.41 6.8.7 Mode and orientation.41 6.8.8 Safety contour.42 6.8.9 Safety depth.42 6.8.10 Object information.42 6.8.11 Navigation related functions.43 6.8.12 Position integration.43 6.8.13 Radar and plotting information.44 6.8.14 Loading of corrupted data.44 6.8.15 Automatic updates.45 6.8.16 Manual updates.46 6.8.17 Self-tests of major functions.46 6.9 Operational requirements.47 6.9.1 Ergonomic principles.47 6.9.2 Route planning.47 6.9.3 Route monitoring.48 6.9.4 Twelve-hour log.49 6.9.5 Voyage record.49 6.9.6 Power supply.50 6.9.7 LOP position fix.50 6.10 Software maintenance.50 Annex A (normative)
SENC information to be displayed during route planning and route monitoring.51 Annex B (normative)
Navigational elements and parameters.52 Annex C (normative)
Areas for which special conditions exist.53 SIST EN 61174:2009

61174 © IEC:2008(E) – 5 – Annex D (normative)
Alarms and indicators.54 Annex E (normative)
ENC test data set.55 Annex F (normative)
Back-up arrangements.58 Annex G (normative)
ECDIS in the RCDS mode of operation.68 Annex H (normative)
Alarms and indicators in the RCDS mode of operation.89 Annex I (normative)
Scenario definitions and plots.90 Annex J (informative)
Test requirements for encrypted ENC.94 Annex K (informative)
Guidance for testing.97 Annex L (normative)
Testing for colours and intensity.99 Annex M (informative)
Elements of an electronic chart database.102 Annex N (informative)
Cross-references between IEC 61174 editions and MSC.232(82).107
Table 1 – Mandatory IEC 61162-1 sentences.23 Table 2 – Area, line and point objects.42 Table L.1 – Ambient light conditions.100
– 6 – 61174 © IEC:2008(E) INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
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
FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61174 has been prepared by IEC technical committee 80: Maritime navigation and radiocommunication equipment and systems. This third edition of IEC 61174 cancels and replaces the second edition published in 2001, of which it constitutes a technical revision. The main changes with respect to the previous edition are listed below: • this edition incorporates revised performance standards for ECDIS adopted by the IMO as resolution MSC.232(82) in December 2006; • the test methods have been updated accordingly and new tests added for encrypted ENC data; SIST EN 61174:2009

61174 © IEC:2008(E) – 7 – • the revised IMO performance standards refer to performance standards for displays adopted by the IMO as resolution MSC.191(79) and these have been incorporated by reference to IEC 62288; • Annex E of the previous edition which defined navigation symbols has been deleted as this information is now in IEC 62288. • five new annexes have been added. IMO changed the order of the performance standards in MSC.232(82) compared with the previous standards in resolution A.817(19). Annex N gives a cross-referencing of clause numbering. The text of this standard is based on the following documents: FDIS Report on voting 80/535/FDIS 80/542/RVD
Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to the specific publication. At this date, the publication will be
• reconfirmed, • withdrawn, • replaced by a revised edition, or • amended. A bilingual version of this publication may be issued at a later date.
– 8 – 61174 © IEC:2008(E) 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
1 Scope This International Standard specifies the performance requirements, methods of testing and required test results of equipment conforming to performance standards not inferior to those adopted by the IMO in resolution MSC.232(82).
This standard is based upon the performance standards of IMO resolution MSC.232(82), and is also associated with IMO resolution A.694(17) and IEC 60945. Reference is made, where appropriate, to IMO resolution MSC.232(82), and all subclauses whose wording is identical to that in the resolution are printed in italics. In association with the above IMO resolution MSC.232(82), are the International Hydrographic Organization (IHO) special publications S-32, S-52, S-57, S-61, S-63 and S-64. This standard has included extracts from the above publications where they are applicable to this equipment. Where reference is made, all subclauses whose wording is identical to that in the publications, are printed in italics. (232/A2.1) These performance standards should apply to all ECDIS equipment carried on all ships as follows: – dedicated standalone workstation. – a multifunction workstation as part of an INS. (232/A2.2) These performance standards apply to ECDIS mode of operation, ECDIS in RCDS mode of operation as specified in Annex G and ECDIS backup arrangements as specified in Annex F. (232/A2.3) Requirements for structure and format of the chart data, encryption of chart data as well as the presentation of chart data are within the scope of relevant IHO standards, including those listed in the normative references. The requirements of this standard are not intended to prevent the use of new techniques in equipment and systems, provided the facilities offered are not inferior to those stated. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60945, Maritime navigation and radiocommunication equipment and systems – General requirements – Methods of testing and required test results IEC 61162 (all parts), Maritime navigation and radiocommunication equipment and systems – Digital interfaces SIST EN 61174:2009

61174 © IEC:2008(E) – 9 – IEC 62288, Maritime navigation and radiocommunication equipment and systems – Presentation of navigation-related information on shipborne navigational displays – General requirements – Methods of testing and required test results IEC 62388, Maritime navigation and radiocommunication equipment and systems – Shipborne Radar – Performance requirements – Methods of testing and required test results
IMO International Convention for the safety of life at sea (SOLAS) 1974 (as amended) IMO A.424(XI):1979, Performance standards for gyro-compasses IMO A.694(17):1991, General requirements for shipborne radio equipment forming part of the global maritime distress and safety system (GMDSS) and for electronic navigational aids IMO A.821(19):1995, Performance standards for gyro-compasses for high-speed craft IMO A.823(19):1995, Performance standards for automatic radar plotting aids IMO A.824(19):1995, Performance standards for devices to indicate speed and distance IMO A.830(19):1995, Code on Alarms and Indicators IMO MSC.191(79), Performance standards for the presentation of navigation-related information on shipborne navigational displays IMO MSC.192(79), Revised performance standards for radar equipment
IMO MSC.232(82):2006, Revised Performance standards for electronic chart display and information systems (ECDIS) IMO MSC/Circ.982 (2000), Guidelines on ergonomic criteria for bridge equipment and layout IMO SN/Circ.243 (2004), Guidelines for the Presentation of Navigation-related Symbols, Terms and Abbreviations IMO SN.1/Circ.266 (2007), Maintenance of electronic chart display and information system (ECDIS) software IHO M-3:2007, Resolutions of the IHO, Chapter A, Section 3, Technical Resolution 3.11 IHO S-32, appendix 1, Hydrographic dictionary – Glossary of ECDIS related terms IHO S-52:1996, Specifications for chart content and display aspects of ECDIS IHO S-52, appendix 1:1996, Guidance on updating the electronic navigational chart IHO S-52, appendix 2:2004 Colour and symbol specifications for ECDIS IHO S-57, appendix B.1: 2000, ENC product specification IHO S-61:1999, Product specification for raster navigational charts (RNC) IHO S-63:2008, IHO data protection scheme IHO S-64, Test data sets for ECDIS 3 Terms, definitions and abbreviations For the purposes of this document, the following terms, definitions and abbreviations apply. SIST EN 61174:2009

– 10 – 61174 © IEC:2008(E) 3.1 Definitions 3.1.1
appropriate portfolio of up to date paper charts
(APC)
(232/App.7 3.7) a suite of paper charts of a scale to show sufficient detail of topography, depths, navigational hazards, aids to navigation, charted routes, and routeing measures to provide the mariner with information on the overall navigational environment. The APC should provide adequate look-ahead capability. Coastal States will provide details of the charts which meet the requirement of this portfolio, and these details are included in a worldwide database maintained by the IHO. Consideration should be given to the details contained in this database when determining the content of the APC 3.1.2
CIE colour calibration procedure to confirm that the colour specified in S-52, appendix 2 is correctly reproduced on the ECDIS display 3.1.3
common reference system sensor input data, providing identical and obligatory reference pertaining to position, course, heading, bearing, speed, velocity, etc. and horizontal datum to different subsystems within an integrated navigation system 3.1.4
compilation scale scale with which the chart information meets the IHO requirements for chart accuracy. It is established by the producing hydrographic office and encoded in the ENC 3.1.5
corrupted data
ENC data produced according to the S-57 ENC product specification, but altered or modified during production, transmission, or retrieval 3.1.6
dead-reckoned position DR position extrapolated from the last accepted position update, based on present course and speed, and updated on a time interval selected by the operator 3.1.7
degrade reduce the quantity or quality of information content 3.1.8
display base (232/A3.5) the chart content as listed in Annex A and which cannot be removed from the display. It is not intended to be sufficient for safe navigation 3.1.9
display redraw time interval from when the display starts to change until the new display is complete 3.1.10
display regeneration time interval from operator action until the consequent redraw is complete SIST EN 61174:2009

61174 © IEC:2008(E) – 11 – 3.1.11
display scale ratio between a distance on the display and a distance on the ground, normalized and expressed as, for example 1:10 000 3.1.12
electronic chart display and information system
(ECDIS) (232/A3.1) a navigation information system which with adequate backup arrangements can be accepted as complying with the up-to-date chart required by regulation V/19 and V/27 of the 1974 SOLAS Convention, as amended, by displaying selected information from a system electronic navigational chart (SENC) with positional information from navigation sensors to assist the mariner in route planning and route monitoring, and if required display additional navigation-related information 3.1.13
electronic navigation chart (ENC) (232/A3.2) the database, standardized as to content, structure and format, issued for use with ECDIS by or on the authority of a Government authorized Hydrographic Office or other relevant government institution, and conform to IHO standards. The ENC contains all the chart information necessary for safe navigation and may contain supplementary information in addition to that contained in the paper chart (for example sailing directions) which may be considered necessary for safe navigation 3.1.14
ENC cell geographic division of ENC data for distributing purposes. For further information, refer to the ENC product specification in S-57 3.1.15
ENC data data conforming to 3.1.13 3.1.16
ENC test data set standardized data set supplied on behalf of the IHO that is necessary to accomplish IEC testing requirements for ECDIS. This data set is encoded according to the S-57 ENC product specification and contains update information based on S-52, appendix 1. The specific requirements are listed in Annex E 3.1.17
estimated position (EP) position of own ship determined by the common intersection of two LOPs 3.1.18
fix
position of own ship determined, without reference to any former position, by the common intersection of three or more LOPs 3.1.19
line of position
(LOP) plotted line on which own ship is located determined by observation or measurement of the range or bearing to an aid to navigation or other charted element SIST EN 61174:2009

– 12 – 61174 © IEC:2008(E) 3.1.20
non-ENC data data not conforming to 3.1.13 3.1.21
overscale display of the chart information at a display scale larger than the compilation scale. Overscaling may arise from deliberate overscaling by the mariner, or from automatic overscaling by ECDIS in compiling a display when the data included is at various scales 3.1.22
presentation library implementation of the display specifications in S-52, appendix 2 “Colour and Symbol Specifications for ECDIS”, by de-coding and symbolizing the SENC. It contains: a) the ECDIS symbol library for chart features; b) the ECDIS colour tables for day, dusk, and night viewing; c) look-up tables, linking ENC objects to the appropriate colour and symbology; d) conditional symbology procedures for – cases where symbolizing depends on circumstances, such as the mariner’s choice of safety contour, date or time; – cases where symbolizing is too complex to be defined in a direct look-up table; e) description of symbology instructions; f) supplementary features, for example ECDIS chart 1 colour differentiation test diagrams and colour calibration software 3.1.23
raster chart display system
(RCDS)
(232/App.7 3.1) a navigation information system displaying RNCs with positional information from navigation sensors to assist the mariner in route planning and route monitoring and, if required, display additional navigation-related information 3.1.24
raster navigational chart
(RNC)
(232/App.7 3.2) a facsimile of a paper chart originated by, or distributed on the authority of, a government-authorized hydrographic office. RNC is used in these standards to mean either a single chart or a collection of charts 3.1.25
RNC data data conforming to 3.1.24 3.1.26
RNC test data set standardized data set supplied on behalf of the IHO that is necessary to accomplish IEC testing requirements for RCDS mode of operation. This data set is encoded according to the S-61 RNC product specification. Test RNCs are specified by the HO providing the RNC service or on whose behalf the RNC service is provided 3.1.27
single operator action single operation shall be achieved by activating a hardkey or softkey, including any necessary cursor movement SIST EN 61174:2009

61174 © IEC:2008(E) – 13 – 3.1.28
standard display (232/A3.4) the display mode intended to be used as a minimum during route planning and route monitoring. The chart content is listed in Annex A
3.1.29
system electronic navigational chart
(SENC) (232/A3.3) a database in the manufacturer’s internal ECDIS format, resulting from the lossless transformation of the entire ENC contents and updates. It is this database that is actually accessed by ECDIS for the display generation and other navigational functions, and is the equivalent of an up-to-date paper chart. The SENC may also contain information added by the mariner and information from other sources 3.1.30
system raster navigational chart database
(SRNC)
(232/App.7 3.3) a database resulting from the transformation of the RNC by the RCDS to include updates to the RNC by appropriate means 3.2 Abbreviations
...