SIST EN IEC 62923-1:2019

Maritime navigation and radiocommunication equipment and systems - Bridge alert management - Part 1: Operational and performance requirements, methods of testing and required test results (IEC 62923-1:2018)

IEC 62923-1:2018 specifies the operational and performance requirements, methods of testing, and required test results for the bridge alert management (BAM) in support of IMO resolution MSC.302(87). It is applicable to all alerts presented on and transferred to the bridge

Navigations- und Funkkommunikationsgeräte und -Systeme für die Seeschifffahrt - Brücken Alert Management - Teil 1: Betriebs- und Leistungsanforderungen, Prüfverfahren und geforderte Prüfergebnisse (IEC 62923-1:2018)

Matériels et systèmes de navigation et de radiocommunication maritimes - Gestion des alertes a la passerelle - Partie 1: Exigences d'exploitation et de fonctionnement, méthodes d'essai et résultats d'essai exigés (IEC 62923-1:2018)

L'IEC 62923-1:2018 spécifie les exigences d'exploitation et de fonctionnement, les méthodes d’essai et les résultats exigés pour la gestion des alertes à la passerelle (BAM – bridge alert management) venant à l'appui de la Résolution MSC.302(87) de l'OMI. Elle s'applique à toutes les alertes présentées et transférées vers la passerelle

Pomorska navigacijska in radiokomunikacijska oprema in sistemi - Upravljanje z opozorili na mostu - 1. del: Zahteve za delovanje in lastnosti, preskusne metode in zahtevani rezultati preskušanja (IEC 62923-1:2018)

Ta del standarda IEC 62923 določa zahteve za delovanje in lastnosti, preskusne metode ter zahtevane rezultate preskušanja za upravljanje z opozorili na mostu (BAM) v podporo resoluciji MSC.302(87) Mednarodne pomorske organizacije. Uporablja se za vsa opozorila, prikazana na mostu in prenesena nanj.
OPOMBA: Celotno besedilo tega dokumenta, ki je enako besedilu resolucije MSC.302(87) Mednarodne pomorske organizacije, je natisnjeno s poševno pisavo, številke odstavkov resolucije in povezanega standarda učinkovitosti pa so navedene v oklepajih.
(MSC.302/2) Za zagotavljanje večje varnosti delovanja, standardi učinkovitosti, podani v resoluciji MSC.302(87), določajo zahteve za usklajen prikaz in obdelavo opozoril na mostu ter sistem centralnega upravljanja opozoril (CAM).
Dodatek E podaja napotke o načelih načrtovanja, ki pri uporabi dosežejo želeno povečanje stopnje varnosti.
(MSC.302/3) Modul A (točka 6) tega dokumenta opisuje splošen koncept upravljanja z opozorili na mostu in prikaz opozoril na opremi mostu. Modula B (točka 7) in D (točka 9) zajemata zahteve za CAM in CAM-HMI. Modul C (točka 8) opisuje zahteve glede vmesnikov za upravljanje z opozorili na mostu.
Upravljanje z opozorili na mostu je koncept, ki nalaga zahteve za opremo za upravljanje in prikaz opozoril na mostu, vključno z opremo, ki zagotavlja funkcije sistema centralnega upravljanja opozoril.
• Oprema je skladna z upravljanjem z opozorili na mostu, če ustreza modulu A – Prikaz in upravljanje opozoril na mostu ter modulu C – Povezovanje tega dokumenta.
• Oprema je skladna s sistemom centralnega upravljanja opozoril, če je skladna z opremo za upravljanje opozoril na mostu in poleg tega ustreza modulu B – Funkcionalnost sistema centralnega upravljanja opozoril ter modulu D – Dokumentacija sistema in opreme za sistem centralnega upravljanja opozoril iz tega dokumenta.
Za namene opremljanja ladje, na kateri je oprema, skladna z opremo za upravljanje (s komunikacijo povezanih) opozoril na mostu, z opremo, ki ni skladna z opremo za upravljanje opozoril (imenovano »starejši viri opozarjanja«), ta dokument vključuje navodila za povezavo obeh vrst opreme (glej točko 4.4 in dodatek H).
IEC 62923-2 opisuje standardizirane identifikatorje opozoril in skupin ter druge dodatne funkcije.

General Information

• Status: Published
• Publication Date: 22-Nov-2018
• ICS: 47.020.70 - Navigation and control equipment
• Technical Committee: I11 - Imaginarni 11
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 09-Nov-2018
• Due Date: 14-Jan-2019
• Completion Date: 23-Nov-2018
• Ref Project: EN IEC 62923-1:2018 - Maritime navigation and radiocommunication equipment and systems - Bridge alert management - Part 1: Operational and performance requirements, methods of testing and required test results

Relations

• Refers: SIST EN IEC 61162-1:2024 - Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 1: Single talker and multiple listeners (IEC 61162-1:2024)
• Effective Date: 03-Feb-2026
• Refers: SIST EN IEC 61162-450:2024 - Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 450: Multiple talkers and multiple listeners - Ethernet interconnection (IEC 61162-450:2024)
• Effective Date: 03-Feb-2026
• Refers: SIST EN 60945:2003 - Maritime navigation and radiocommunication equipment and systems - General requirements - Methods of testing and required test results
• Effective Date: 03-Feb-2026
• Referred By: SIST EN IEC 61108-5:2020 - Maritime navigation and radiocommunication equipment and systems - Global navigation satellite systems (GNSS) - Part 5: BeiDou navigation satellite system (BDS) - Receiver equipment - Performance requirements, methods of testing and required test results (IEC 61108-5:2020)
• Effective Date: 03-Feb-2026
• Referred By: SIST EN IEC 62288:2022 - 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 62288:2021)
• Effective Date: 03-Feb-2026
• Referred By: SIST EN IEC 61993-2:2019 - Maritime navigation and radiocommunication equipment and systems - Automatic Identification Systems (AIS) - Part 2: Class A shipborne equipment of the automatic identification system (AIS) - Operational and performance requirements, methods of test and required test results (IEC 61993-2:2018)
• Effective Date: 03-Feb-2026
• Referred By: SIST EN IEC 62923-2:2019 - Maritime navigation and radiocommunication equipment and systems - Bridge alert management - Part 2: Alert and cluster identifiers and other additional features (IEC 62923-2:2018)
• Effective Date: 03-Feb-2026
• Referred By: SIST EN 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)
• Effective Date: 03-Feb-2026
• Referred By: SIST EN IEC 61162-460:2018/A1:2020 - Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 460: Multiple talkers and multiple listeners - Ethernet interconnection - Safety and security (IEC 61162-460:2018/A1:2020)
• Effective Date: 03-Feb-2026
• Referred By: SIST EN IEC 62065:2026 - Maritime navigation and radiocommunication equipment and systems - Track control systems - Operational and performance requirements, test methods and required test results (IEC 62065:2025)
• Effective Date: 03-Feb-2026

Overview

SIST EN IEC 62923-1:2019 establishes operational and performance requirements, testing methods, and required test results for Bridge Alert Management (BAM) in maritime navigation and radiocommunication equipment and systems. This standard, harmonized as EN IEC 62923-1:2018, directly supports the International Maritime Organization (IMO) resolution MSC.302(87) and is vital for ensuring the effective management and presentation of bridge alerts on seagoing vessels. Its scope covers all alerts presented on and transferred to the bridge, facilitating harmonized alert handling across multiple onboard systems.

Key Topics

• Operational and Performance Requirements: Defines the criteria for how BAM systems and related equipment must function under various maritime operational conditions.
• Methods of Testing: Outlines standardized procedures to assess the conformance of equipment to BAM requirements, ensuring safety and reliability in alert management.
• Required Test Results: Specifies minimum acceptable outcomes for performance and operational tests, verifying that products are compliant with regulatory and safety standards.
• Alert Harmonization: Focuses on consistent alert states, prioritization, and categorization (emergency alarms, alarms, warnings, cautions), supporting unified handling and response.
• User Interface and Human-Machine Interface (HMI): Requirements for the presentation of alerts, including visual and audible annunciation, icons, and decision support aids.
• Central Alert Management (CAM) System: Guidelines for integrating and presenting alerts from multiple sources through a centralized management and display system on the bridge.
• Alert Aggregation and Grouping: Procedures for functional grouping, alert escalation, and aggregation to prevent alert overload and enhance operator awareness.
• Interfacing and Communication Protocols: Specifications for digital communication via protocols such as IEC 61162-1 and IEC 61162-450, ensuring interoperability among navigation and communication systems.

Applications

SIST EN IEC 62923-1:2019 is critical for:

• Shipborne Equipment Manufacturers: Ensuring bridge alert management systems and integrated navigation systems (INS) are designed and tested according to internationally recognized safety standards.
• System Integrators: Facilitating seamless aggregation and harmonized display of alerts from diverse navigation, radiocommunication, and control equipment, enhancing bridge situational awareness.
• Certification Bodies and Inspectors: Using standardized testing procedures and performance benchmarks to verify compliance aboard new ships, retrofits, or periodic surveys.
• Vessel Operators and Crew: Benefiting from intuitive, standardized alert prioritization and management, supporting faster, safer, and more informed decision-making on the bridge.
• Regulatory Compliance: Meeting IMO and flag state requirements for alert transparency and purposeful alert behavior, thus advancing maritime safety and operational efficiency.

Related Standards

Compliance with SIST EN IEC 62923-1:2019 is supported and complemented by several key international standards:

• IEC 60945: Maritime navigation and radiocommunication equipment - General requirements, methods of testing, and required test results.
• IEC 61162-1 / IEC 61162-450: Digital interfaces for navigation and radiocommunication equipment.
• IEC 61924-2: Integrated navigation systems - Modular structure, operational, and performance requirements.
• IEC 62288: Presentation of navigation-related information on shipborne navigational displays.
• IEC 62923-2: Bridge alert management – Part 2 (alert and cluster identifiers and other additional features).
• IMO MSC.302(87): Performance standards for bridge alert management.

Incorporating SIST EN IEC 62923-1:2019 ensures alignment with the latest technologies and regulatory expectations for maritime navigation and radiocommunication safety. Its structured approach to bridge alert management promotes interoperability, safety, and operational excellence in maritime bridge operations.

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2019
Pomorska navigacijska in radiokomunikacijska oprema in sistemi - Upravljanje z
opozorili na mostu - 1. del: Zahteve za delovanje in lastnosti, preskusne metode in
zahtevani rezultati preskušanja (IEC 62923-1:2018)
Maritime navigation and radiocommunication equipment and systems - Bridge alert
management - Part 1: Operational and performance requirements, methods of testing
and required test results (IEC 62923-1:2018)
Navigations- und Funkkommunikationsgeräte und -Systeme für die Seeschifffahrt -
Brücken Alert Management - Teil 1: Betriebs- und Leistungsanforderungen,
Prüfverfahren und geforderte Prüfergebnisse (IEC 62923-1:2018)
Matériels et systèmes de navigation et de radiocommunication maritimes - Gestion des
alertes a la passerelle - Partie 1: Exigences d'exploitation et de fonctionnement,
méthodes d'essai et résultats d'essai exigés (IEC 62923-1:2018)
Ta slovenski standard je istoveten z: EN IEC 62923-1:2018
ICS:
47.020.70 Navigacijska in krmilna Navigation and control
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62923-1

NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2018
ICS 47.020.70
English Version
Maritime navigation and radiocommunication equipment and
systems - Bridge alert management - Part 1: Operational and
performance requirements, methods of testing and required test
results
(IEC 62923-1:2018)
Matériels et systèmes de navigation et de Navigations- und Funkkommunikationsgeräte und -Systeme
radiocommunication maritimes - Gestion des alertes a la für die Seeschifffahrt - Brücken Alert Management - Teil 1:
passerelle - Partie 1: Exigences d'exploitation et de Betriebs- und Leistungsanforderungen, Prüfverfahren und
fonctionnement, méthodes d'essai et résultats d'essai geforderte Prüfergebnisse
exigés (IEC 62923-1:2018)
(IEC 62923-1:2018)
This European Standard was approved by CENELEC on 2018-10-03. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62923-1:2018 E

European foreword
The text of document 80/892/FDIS, future edition 1 of IEC 62923-1, prepared by IEC/TC 80 "Maritime
navigation and radiocommunication equipment and systems" was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN IEC 62923-1:2018.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2019-07-03
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2021-10-03
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 62923-1:2018 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60812 NOTE Harmonized as EN 60812
IEC 61162-2 NOTE Harmonized as EN 61162-2
IEC 62065 NOTE Harmonized as EN 62065
IEC 62616 NOTE Harmonized as EN 62616
IEC 62940 NOTE Harmonized as EN 62940

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60945 2002 Maritime navigation and radiocommunication EN 60945 2002
equipment and systems - General requirements -
Methods of testing and required test results
IEC 61162-1 -  Maritime navigation and radiocommunication EN 61162-1 -
equipment and systems - Digital interfaces - Part 1:
Single talker and multiple listeners
IEC 61162-450 -  Maritime navigation and radiocommunication EN IEC 61162-450 -
equipment and systems - Digital interfaces - Part
450: Multiple talkers and multiple listeners -
Ethernet interconnection
IEC 61924-2 -  Maritime navigation and radiocommunication EN 61924-2 -
equipment and systems - Integrated navigation
systems - Part 2: Modular structure for INS -
Operational and performance requirements,
methods of testing and required test results
IEC 62288 -  Maritime navigation and radiocommunication EN 62288 -
equipment and systems - Presentation of
navigation-related information on shipborne
navigational displays - General requirements,
methods of testing and required test results
IEC 62923-2 2018 Maritime navigation and radiocommunication -EN IEC 62923-2 2018
equipment and systems - Bridge alert management
- Part 2: Alert and cluster identifiers and other
additional features
IMO -  Performance standards for Bridge Alert - -
MSC.302(87) Management (BAM)
IEC 62923-1 ®
Edition 1.0 2018-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Maritime navigation and radiocommunication equipment and systems – Bridge

alert management –
Part 1: Operational and performance requirements, methods of testing and

required test results
Matériels et systèmes de navigation et de radiocommunication maritimes –

Gestion des alertes a la passerelle –

Partie 1: Exigences d'exploitation et de fonctionnement, méthodes d'essai et

résultats d'essai exigés
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 47.020.70 ISBN 978-2-8322-5993-1

– 2 – IEC 62923-1:2018  IEC 2018
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 10
2 Normative references . 10
3 Terms, definitions and abbreviated terms . 11
3.1 Terms and definitions. 11
3.2 Abbreviated terms . 16
4 Description . 17
4.1 Purpose . 17
4.2 EUT function types . 17
4.3 Application . 18
4.4 Implementation of BAM interfaces . 18
4.5 Clusters . 19
5 Test methods . 20
5.1 Subject of tests . 20
5.2 Test set-ups . 20
5.3 General requirements . 20
5.4 Configuration for testing . 21
6 Module A – Presentation and handling of alerts on the bridge . 21
6.1 General . 21
6.1.1 Provisions. 21
6.1.2 Number of alerts for one situation . 21
6.1.3 Alert presentation at several locations . 22
6.1.4 Central alert management HMI . 22
6.2 Priorities classification and categories . 23
6.2.1 Applicability . 23
6.2.2 Requirement . 23
6.2.3 Methods of test and required results . 25
6.3 Presentation and state of alerts . 25
6.3.1 Applicability . 25
6.3.2 General . 25
6.3.3 Emergency alarms . 29
6.3.4 Alarms . 29
6.3.5 Warnings . 34
6.3.6 Cautions . 39
6.3.7 Alert escalation . 39
6.4 Presentation of alerts on the bridge . 41
6.4.1 Applicability . 41
6.4.2 General requirements . 41
6.4.3 Aids for decision making . 45
6.4.4 Audible annunciation . 45
6.4.5 Display of icons . 48
6.4.6 Functionality to help reduce the number of high-priority alerts . 48
6.5 Systems failures, redundancies, back-up and fallback arrangements . 49
6.5.1 Applicability . 49
6.5.2 Requirement . 49

IEC 62923-1:2018  IEC 2018 – 3 –
6.5.3 Methods of test and required results . 50
6.6 Documentation . 51
6.6.1 Applicability . 51
6.6.2 Requirement . 52
6.6.3 Methods of test and required results . 52
6.7 Functional alert grouping . 52
6.7.1 Applicability . 52
6.7.2 Functional alert group source . 52
6.7.3 Functional alert group display . 55
6.8 Alert aggregation . 57
6.8.1 Applicability . 57
6.8.2 Alert aggregation source . 57
6.8.3 Aggregation display . 59
6.9 Responsibility transfer . 61
6.9.1 EUT performing revaluation . 61
6.9.2 EUT as source of alerts . 62
7 Module B – Central alert management system functionality . 63
7.1 Applicability . 63
7.2 Central alert management human machine interface (CAM-HMI) . 63
7.2.1 General requirements . 63
7.2.2 Aggregated header alerts . 67
7.2.3 Alert history . 68
7.3 Functional aspects of a CAM . 70
7.3.1 Requirement . 70
7.3.2 Methods of test and required results . 70
7.4 Back-up and redundancies . 71
7.4.1 Requirement . 71
7.4.2 Methods of test and required results . 71
7.5 System failures and fallback arrangements . 71
7.5.1 Requirement . 71
7.5.2 Methods of test and required results . 72
8 Module C – Interfacing . 73
8.1 Interfacing requirements for alert-related communication . 73
8.1.1 Communication protocol . 73
8.1.2 Alert priority, state and text . 74
8.1.3 Time of last change . 75
8.1.4 Acknowledgement and silence . 75
8.1.5 Aggregation . 76
8.1.6 Reconnection . 77
8.2 Connection to the ship's power supply . 77
8.2.1 Applicability . 77
8.2.2 Requirement . 77
8.2.3 Methods of test and required results . 77
8.3 Function not in operational use . 77
8.3.1 Applicability . 77
8.3.2 Requirement . 78
8.3.3 Methods of test and required results . 78
9 Module D – System and equipment documentation for CAM system . 78
9.1 Applicability . 78

– 4 – IEC 62923-1:2018  IEC 2018
9.2 Manuals . 78
9.2.1 Requirement . 78
9.2.2 Methods of test and required results . 78
9.3 Information regarding system configuration for surveyor . 78
9.3.1 Requirement . 78
9.3.2 Methods of tests and required results . 79
9.4 Failure analysis . 79
9.4.1 Requirement . 79
9.4.2 Methods of test and required results . 79
9.5 Guidance to equipment manufacturers for the provision of on-board
familiarization material . 79
9.5.1 Requirement . 79
9.5.2 Methods of test and required results . 79
Annex A (informative) Test set-ups . 80
A.1 Applicability . 80
A.2 Purpose . 80
A.3 Generic representation . 80
A.4 Test set-up 1 . 82
A.5 Test set-up 2 . 82
A.6 Test set-up 3 . 83
A.7 Test set-up 4 . 84
Annex B (informative) Guidance to equipment manufacturers for the provision of on-
board familiarization material (Appendix 2 of IMO Resolution MSC.302(87)) . 86
B.1 Applicability . 86
B.2 General . 86
B.3 On-board familiarization . 86
B.4 Familiarization training framework . 87
B.4.1 General description . 87
B.4.2 Detailed operation . 87
Annex C (normative) Logical interfaces for alert communication . 88
C.1 Applicability . 88
C.2 Logical interfaces . 88
C.3 Alert sentences for exchanging alert information . 89
C.4 Alert communication in case of successful revaluation and priority reduction . 91
C.5 Alert communication in case of unsuccessful revaluation . 92
C.6 Additional requirements for use of BAM sentences on IEC 61162-450 . 93
C.6.1 Use of ALF . 93
C.6.2 Use of ALC . 93
C.6.3 Use of ACN . 94
C.6.4 Use of ARC . 94
C.6.5 Use of AGL . 94
C.7 Alert communication in case of inconsistent content of ALF messages . 94
Annex D (informative) Properties of aggregation and functional grouping . 95
Annex E (informative) Guidance on alert management . 96
E.1 Applicability . 96
E.2 Alert management strategic changes . 96
E.3 Alert management tactics . 96
E.4 Alert management means and methods . 97
E.4.1 Overview . 97

IEC 62923-1:2018  IEC 2018 – 5 –
E.4.2 Functional alerts . 98
E.4.3 Tools . 100
E.4.4 Clusters . 102
E.4.5 Technical and structural approach . 104
Annex F (normative) Icons for alert management . 105
Annex G (normative) Alert state diagrams . 108
Annex H (normative) Legacy alert handling . 111
H.1 Applicability . 111
H.2 Introduction to legacy alert sources . 111
H.3 Conversion of legacy alerts . 112
H.3.1 Requirement . 112
H.3.2 Methods of test and required results . 112
Annex I (normative) Alert group list (AGL) message for functional grouping . 114
I.1 Applicability . 114
I.2 General . 114
I.3 AGL – Alert group list . 114
Annex J (normative) TAG block for cluster identification . 115
J.1 Applicability . 115
J.2 General . 115
J.3 Destination cluster identification "x" . 115
J.4 Source cluster identification "z" . 115
Annex K (informative) Additional talker identifiers for alert sources . 116
Bibliography . 117

Figure 1 – Interfacing legacy alert sources with BAM compliant equipment . 19
Figure 2 – Example of cluster-dependent alert management limitations . 20
Figure 3 – Multiple alerts with audible annunciation existing simultaneously . 46
Figure 4 – Occurrence of alerts during a temporary silence period . 46
Figure 5 – Escalation of a warning as warning during a temporary silence period . 47
Figure 6 – Occurrence of multiple warnings . 47
Figure A.1 – BAM concept . 81
Figure A.2 – Test set-up 1: no revaluation of input data . 82
Figure A.3 – Test set-up 2: with revaluation of input data . 83
Figure A.4 – Test set-up 3: BAM compliant CAM system . 84
Figure A.5 – Test set-up 4: BAM/CAM system compliant INS . 85
Figure C.1 – Logical interfaces . 88
Figure C.2 – Alert communication showing priority reduction, alert condition rectified . 92
Figure C.3 – Alert communication in case of no priority reduction, with user
acknowledgement . 93
Figure E.1 – Alert management decision flow. 97
Figure E.2 – Clusters and their functional relations . 103
Figure G.1 – State diagram of an alert of priority emergency alarm . 108
Figure G.2 – State diagram of an alert of priority alarm . 109
Figure G.3 – State diagram of an alert of priority warning . 110
Figure G.4 – State diagram of an alert of priority caution . 110

– 6 – IEC 62923-1:2018  IEC 2018
Figure H.1 – Division of functional blocks of alert management when BAM compliant
alert source is interfaced to CAM . 111
Figure H.2 – Division of functional blocks of alert management when legacy alert

source is interfaced to CAM . 111

Table 1 – Alert states and related conditions . 26
Table 2 – Alert state and presentation for emergency alarms . 26
Table 3 – Alert state and presentation for alarms . 27
Table 4 – Alert state and presentation for warnings . 28
Table 5 – Alert state and presentation for cautions . 28
Table C.1 – IEC 61162-1 sentences received by BAM compliant equipment . 90
Table C.2 – IEC 61162-1 sentences transmitted by BAM compliant equipment . 91
Table D.1 – Properties of aggregation and functional grouping . 95
Table F.1 – Alert management icons – basic . 105
Table F.2 – Alert management icons – additional qualifiers . 107
Table F.3 – Alert management icons – selected display status . 107
Table K.1 – Talker identifiers for automation equipment . 116

IEC 62923-1:2018  IEC 2018 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MARITIME NAVIGATION AND RADIOCOMMUNICATION
EQUIPMENT AND SYSTEMS – BRIDGE ALERT MANAGEMENT –

Part 1: Operational and performance requirements,
methods of testing and required test results

FOREWORD
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International Standard IEC 62923-1 has been prepared by IEC technical committee 80:
Maritime navigation and radiocommunication equipment and systems.
The text of this document is based on the following documents:
FDIS Report on voting
80/892/FDIS 80/897/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 8 – IEC 62923-1:2018  IEC 2018
A list of all parts in the IEC 62923 series, published under the general title Maritime
navigation and radiocommunication equipment and systems – Bridge alert management, can
be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
IEC 62923-1:2018  IEC 2018 – 9 –
INTRODUCTION
IEC 62923-1 has been written in pursuit of IMO resolution MSC.302(87), to further detail the
technical requirements of bridge alert management and to enable testing of any equipment
against the requirements of bridge alert management.
Bridge alert management (BAM) is the IMO defined overall concept for the management,
handling and harmonized presentation of alerts on the bridge.
This document has been written in such a way that this form of alert management can be
applied ship wide, next to, and in cooperation with, cluster(s) on the bridge.
Individual equipment that applies the BAM principles uses
• harmonized states for its alerts,
• harmonized presentation for presentation of its alerts, and
• harmonized alert communications for
– communication with other equipment (VDR and equipment with more knowledge, as
applicable), and
– communication with a central alert management (CAM) system, if provided on board.
A CAM system, including its human machine interface(s) (HMI),
• uses harmonized states for its alerts,
• uses harmonized presentation for presentation of all alerts generated on the bridge,
• uses harmonized alert communications for communication with other equipment (VDR,
alert source equipment),
• provides the function to silence all audible alerts on the bridge, and
• provides the function to individually acknowledge all alerts generated on the bridge for
which additional decision support information is not required;
A CAM system may be standalone or combined with other equipment, for example in the case
of an integrated navigation system (INS).
All equipment that applies the BAM principles may provide intelligence to deal with the
processing of non-BAM "legacy" alarm communications for harmonized presentation at its
HMI.
This document provides the harmonization requirements.

– 10 – IEC 62923-1:2018  IEC 2018
MARITIME NAVIGATION AND RADIOCOMMUNICATION
EQUIPMENT AND SYSTEMS – BRIDGE ALERT MANAGEMENT –

Part 1: Operational and performance requirements,
methods of testing and required test results

1 Scope
This part of IEC 62923 specifies the operational and performance requirements, methods of
testing, and required test results for the bridge alert management (BAM) in support of IMO
resolution MSC.302(87). It is applicable to all alerts presented on and transferred to the
bridge.
NOTE All text of this document whose wording is identical to that of IMO resolution MSC.302(87) is printed in
italics, and the resolution and associated performance standard paragraph numbers are indicated in brackets.
(MSC.302/2) To enhance the safety of operation, the Performance standards given in
resolution MSC.302(87) provide requirements for the harmonized presentation and treatment
of alerts on the bridge and specify a central alert management (CAM) system.
Annex E provides guidance on design principles that, when applied, will achieve the desired
enhancement of safety.
(MSC.302/3) Module A (Clause 6) of this document describes the general concept of the BAM
and the presentation of alerts on the bridge equipment. Modules B (Clause 7) and D
(Clause 9) contain requirements for the CAM and the CAM-HMI. Module C (Clause 8)
describes the interface requirements for BAM.
BAM is a concept that imposes requirements on equipment that handles and presents alerts
on the bridge, including equipment that provides central alert management (CAM) system
functionalities.
• Equipment is BAM compliant if it meets Module A – Presentation and handling of alerts on
the bridge and Module C – Interfacing of this document.
• Equipment is CAM system compliant if it is BAM compliant equipment and, in addition,
meets Module B – Central alert management system functionality and Module D – System
and equipment documentation for CAM system of this document.
To support retrofitting a ship with BAM compliant equipment handling alert related
communication with remaining non-BAM compliant equipment (referred to as "legacy alert
sources"), this document includes guidance on how to interface BAM compliant equipment
with remaining devices that are not BAM compliant (see 4.4 and Annex H).
IEC 62923-2 provides standardized alert and cluster identifiers and other additional features.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements 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 60945:2002, Maritime navigation and radiocommunication equipment and systems –
General requirements – Methods of testing and required test results

IEC 62923-1:2018  IEC 2018 – 11 –
IEC 61162-1, Maritime navigation and radiocommunication equipment and systems – Digital
interfaces – Part 1: Single talker and multiple listeners
IEC 61162-450, Maritime navigation and radiocommunication equipment and systems –
Digital interfaces – Multiple talkers and multiple listeners – Ethernet interconnection
IEC 61924-2, 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
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 62923-2:2018, Maritime navigation and radiocommunication equipment and systems –
Bridge alert management – Part 2: Alert and cluster identifiers and other additional features
IMO MSC.302(87), Performance standards for bridge alert management (BAM)
3 Terms, definitions and abbreviated terms
For the purposes of this document, the following terms, definitions and abbreviated terms
apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1 Terms and definitions
3.1.1
active alert
alert that is not in state "normal"
3.1.2
aggregated header alert
(MSC.302/A) alert indicating the existence of multiple individual alerts of the same kind,
transmitted by the aggregation source with alert state and alert ID
...