IEC 61924-2:2021

Maritime navigation and radiocommunication equipment and systems - Integrated navigation systems (INS) - Part 2: Modular structure for INS - Operational and performance requirements, methods of testing and required test results

IEC 61924-2:2021 specifies the minimum requirements for the design, manufacture, integration, methods of testing and required test results for an integrated navigation system (INS) to comply with the International Maritime Organization (IMO) requirements of Resolution MSC.252(83), as amended by Resolution MSC.452(99). In addition, it takes account of IMO Resolution A.694(17) to which IEC 60945 is associated. When a requirement in this document is different from IEC 60945, the requirement of this document takes precedence.

Matériels et systèmes de navigation et de radiocommunication maritimes - Systèmes de navigation intégrés (INS) - Partie 2: Structure modulaire des systèmes de navigation intégrés - Exigences opérationnelles et de fonctionnement, méthodes d'essai et résultats d'essai exigés

L'IEC 61924-2:2021 spécifie les exigences minimales applicables à la conception, à la fabrication, à l'intégration, aux méthodes d'essai et aux résultats d'essai exigés pour qu'un système de navigation intégré (INS - Integrated Navigation System) soit conforme aux exigences de la Résolution MSC.252(83) de l'Organisation Maritime Internationale (OMI), modifiée par la Résolution MSC.452(99). De plus, elle tient compte de la Résolution A.694(17) de l'OMI à laquelle est associée l'IEC 60945. Lorsqu'une exigence du présent document diffère de l'IEC 60945, l'exigence du présent document prévaut.

General Information

• Status: Published
• Publication Date: 11-Feb-2021
• ICS: 47.020.70 - Navigation and control equipment
• Technical Committee: TC 80 - Maritime navigation and radiocommunication equipment and systems
• Drafting Committee: WG 16 - TC 80/WG 16
• Current Stage: PPUB - Publication issued
• Start Date: 29-Jan-2021
• Completion Date: 12-Feb-2021

Relations

• Revises: IEC 61924-2:2012 - Maritime navigation and radiocommunication equipment and systems - Integrated navigation systems - Part 2: Modular structure for INS - Operational and performance requirements, methods of testing and required test results
• Effective Date: 05-Sep-2023
• Revises: IEC 61924-2:2012/COR1:2013 - Corrigendum 1 - Maritime navigation and radiocommunication equipment and systems - Integrated navigation systems - Part 2: Modular structure for INS - Operational and performance requirements, methods of testing and required test results
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61924-2 ®
Edition 2.0 2021-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Maritime navigation and radiocommunication equipment and systems –
Integrated navigation systems (INS) –
Part 2: Modular structure for INS – 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 Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
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
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latest edition, a corrigendum or an amendment might have been published.

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and French, with equivalent terms in 18 additional languages.
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(IEV) online.
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If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: [e-mail].
IEC 61924-2 ®
Edition 2.0 2021-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Maritime navigation and radiocommunication equipment and systems –

Integrated navigation systems (INS) –

Part 2: Modular structure for INS – Operational and performance requirements,

methods of testing and required test results

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 47.020.70 ISBN 978-2-8322-9441-3

– 2 – IEC 61924-2:2021 RLV © IEC 2021
CONTENTS
FOREWORD . 8
1 Scope . 10
2 Normative references . 10
3 Terms, definitions and abbreviated terms . 11
3.1 Terms and definitions . 11
3.2 Abbreviated terms . 20
4 MSC IMO resolutions . 21
4.1 General . 21
4.2 Purpose of integrated navigation systems . 22
4.3 Application . 23
5 Test requirements and results . 25
5.1 General . 25
5.2 Exceptions for tests previously performed . 25
5.3 Test site . 26
5.4 Methods of test . 26
6 Module A – Requirements for integration of navigational information . 26
6.1 Interfacing and data exchange . 26
6.1.1 Combination, processing and evaluation of data . 26
6.1.2 Availability, validity and integrity . 26
6.1.3 Failure of data exchange . 27
6.1.4 Interfaces in general . 27
6.1.5 Interface to alert management . 27
6.2 Accuracy . 27
6.2.1 Requirement . 27
6.2.2 Methods of test and required results . 28
6.3 Validity, plausibility, latency . 28
6.3.1 Validity . 28
6.3.2 Plausibility . 29
6.3.3 Latency. 30
6.4 Consistent common reference system (CCRS) . 30
6.4.1 Consistency of data . 30
6.4.2 Consistent common reference point (CCRP) . 31
6.4.3 Consistency of thresholds . 32
6.5 Integrity monitoring . 33
6.5.1 Requirement . 33
6.5.2 Methods of test and required results . 34
6.6 Marking of data . 35
6.6.1 Requirement . 35
6.6.2 Methods of tests and required results . 36
6.7 Selection of sensors and sources . 36
6.7.1 Requirement . 36
6.7.2 Methods of test and required results . 37
7 Module B – Task related requirements for integrated navigation systems . 37
7.1 Description . 37
7.2 Task and functional requirements for an INS . 37

7.2.1 General . 37
7.2.2 Task "Route planning" . 38
7.2.3 Task "Route monitoring" . 40
7.2.4 Task "Collision avoidance" . 44
7.2.5 Task "Navigation control data" . 48
7.2.6 Task "Alert management" . 50
7.2.7 Task "Status and data display" . 50
7.3 Functional requirements for INS task stations . 52
7.3.1 Number of task stations . 52
7.3.2 Track control . 53
7.3.3 Automatic control functions . 54
7.4 Functional requirements for displays of INS . 55
7.4.1 General . 55
7.4.2 Default display configurations and operational modes . 58
7.4.3 Mode and status awareness . 59
7.4.4 Information display . 60
7.5 Human machine interface . 61
7.5.1 General . 61
7.5.2 System Equipmen design . 62
7.5.3 Display . 62
7.5.4 Input . 62
7.6 INS back-up requirements and redundancies . 63
7.6.1 General . 63
7.6.2 Hardware redundancies (back-up) . 65
7.7 System failures and fallback arrangement . 65
7.7.1 General description . 65
7.7.2 Restored operation . 65
7.7.3 Failure or change of sensor for automatic control function . 66
7.7.4 Failure of sensor . 66
7.7.5 Storage of system related parameters . 67
7.7.6 Safe response to malfunction. 67
7.7.7 Alert management . 68
7.7.8 Fallback for navigational information failure . 69
7.8 Technical requirements . 70
7.8.1 General . 70
7.8.2 Hardware and/or processors . 71
7.8.3 Power supply . 71
7.8.4 Power interruptions and shutdown . 72
7.8.5 Data communication interface and protocols . 73
7.8.6 Installation . 73
8 Module C – Alert management . 74
8.1 Description .
8.1.1 Purpose of alert management .
8.1.2 Scope of alert management .
8.1.3 Application of alert management .
8.2 General requirements .
8.2.1 Provisions .
8.2.2 Number of alerts for one situation .

– 4 – IEC 61924-2:2021 RLV © IEC 2021
8.2.3 Alerts to be handled by the alert management .
8.2.4 Logical architecture of the alert management .
...

IEC 61924-2 ®
Edition 2.0 2021-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Maritime navigation and radiocommunication equipment and systems –
Integrated navigation systems (INS) –
Part 2: Modular structure for INS – Operational and performance requirements,
methods of testing and required test results

Matériels et systèmes de navigation et de radiocommunication maritimes –
Systèmes de navigation intégrés (INS) –
Partie 2: Structure modulaire des systèmes de navigation intégrés – Exigences
opérationnelles et de fonctionnement, méthodes d'essai et résultats d'essai
exigés
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.

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CH-1211 Geneva 20 www.iec.ch
Switzerland
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 corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC online collection - oc.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always
committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
and withdrawn publications.
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IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 000 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 18 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: [e-mail].
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IEC 61924-2 ®
Edition 2.0 2021-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Maritime navigation and radiocommunication equipment and systems –

Integrated navigation systems (INS) –

Part 2: Modular structure for INS – Operational and performance requirements,

methods of testing and required test results

Matériels et systèmes de navigation et de radiocommunication maritimes –

Systèmes de navigation intégrés (INS) –

Partie 2: Structure modulaire des systèmes de navigation intégrés – Exigences

opérationnelles et de fonctionnement, méthodes d'essai et résultats d'essai

exigés
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 47.020.70 ISBN 978-2-8322-9304-1

– 2 – IEC 61924-2:2021 © IEC 2021
CONTENTS
FOREWORD . 6
1 Scope . 8
2 Normative references . 8
3 Terms, definitions and abbreviated terms . 9
3.1 Terms and definitions . 9
3.2 Abbreviated terms . 18
4 IMO resolutions . 18
4.1 General . 18
4.2 Purpose of integrated navigation systems . 19
4.3 Application . 20
5 Test requirements and results . 22
5.1 General . 22
5.2 Exceptions for tests previously performed . 22
5.3 Test site . 23
5.4 Methods of test . 23
6 Module A – Requirements for integration of navigational information . 23
6.1 Interfacing and data exchange . 23
6.1.1 Combination, processing and evaluation of data . 23
6.1.2 Availability, validity and integrity . 23
6.1.3 Failure of data exchange . 24
6.1.4 Interfaces in general . 24
6.1.5 Interface to alert management . 24
6.2 Accuracy . 24
6.2.1 Requirement . 24
6.2.2 Methods of test and required results . 25
6.3 Validity, plausibility, latency . 25
6.3.1 Validity . 25
6.3.2 Plausibility . 26
6.3.3 Latency. 27
6.4 Consistent common reference system (CCRS) . 27
6.4.1 Consistency of data . 27
6.4.2 Consistent common reference point (CCRP) . 28
6.4.3 Consistency of thresholds . 29
6.5 Integrity monitoring . 30
6.5.1 Requirement . 30
6.5.2 Methods of test and required results . 31
6.6 Marking of data . 32
6.6.1 Requirement . 32
6.6.2 Methods of tests and required results . 33
6.7 Selection of sensors and sources . 33
6.7.1 Requirement . 33
6.7.2 Methods of test and required results . 34
7 Module B – Task related requirements for integrated navigation systems . 34
7.1 Description . 34
7.2 Task and functional requirements for an INS . 34
7.2.1 General . 34

7.2.2 Task "Route planning" . 35
7.2.3 Task "Route monitoring" . 37
7.2.4 Task "Collision avoidance" . 41
7.2.5 Task "Navigation control data" . 45
7.2.6 Task "Alert management" . 46
7.2.7 Task "Status and data display" . 47
7.3 Functional requirements for INS task stations . 48
7.3.1 Number of task stations . 48
7.3.2 Track control . 50
7.3.3 Automatic control functions . 51
7.4 Functional requirements for displays of INS . 52
7.4.1 General . 52
7.4.2 Default display configurations and operational modes . 55
7.4.3 Mode and status awareness . 56
7.4.4 Information display . 56
7.5 Human machine interface . 58
7.5.1 General . 58
7.5.2 Equipment design . 58
7.5.3 Display . 59
7.5.4 Input . 59
7.6 INS back-up requirements and redundancies . 60
7.6.1 General . 60
7.6.2 Hardware redundancies (back-up) . 62
7.7 Sys
...