ISO 21745:2019

INTERNATIONAL ISO
STANDARD 21745
First edition
2019-09
Electronic record books for ships —
Technical specifications and
operational requirements
Journaux de bord électroniques — Spécifications techniques et
exigences opérationnelles
Reference number
©
ISO 2019
© ISO 2019
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ii © ISO 2019 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 System requirements . 4
4.1 General requirements . 4
4.1.1 Power supply . . 5
4.2 Functional requirements . 5
4.2.1 Data storage . 5
4.2.2 Record management . 8
4.2.3 System output .10
4.2.4 Validation .10
4.2.5 System availability .11
4.3 Human-machine interface .11
4.3.1 Ergonomic criteria.11
4.4 System updates .11
4.4.1 Updates to the electronic record book .11
5 Test methods and required results .12
5.1 General .12
5.1.1 Power supply . .12
5.2 Functional requirements .12
5.2.1 Data storage .12
5.2.2 Record management .15
5.2.3 System output .16
5.2.4 Validation .16
5.3 Human-machine interface .17
5.4 System updates .17
5.4.1 System update of the ELRB .17
Annex A (normative) Alert sentence (ALF) formatter .18
Bibliography .19
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
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www .iso .org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 8, Ships and marine technology,
Subcommittee SC 11, Intermodal and Short Sea Shipping.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2019 – All rights reserved

Introduction
This document was developed in response to maritime industry demand and International Maritime
Organization (IMO) request for a standard providing requirements for the design and testing of
electronic record books on ships. The industry momentum towards paperless systems enhances the
need of such a standard with technical and operational requirements for electronic record books.
INTERNATIONAL STANDARD ISO 21745:2019(E)
Electronic record books for ships — Technical
specifications and operational requirements
1 Scope
This document specifies the minimum technical and operational requirements for electronic record
books (ELRB) to be used on ships.
It aims at providing manufacturers, operators, maritime administrations and owners with a technical
background for the replacement of paper logbooks.
2 Normative references
The following documents are referred to in the text in such a way that some or all their content
constitute 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, Maritime navigation and radiocommunication equipment and systems — General
requirements — Methods of testing and required results
IEC 61162-1:2016, Single talker and multiple listeners
IEC 61162-2:2016, Single talker and multiple listeners, high-speed transmission
IEC 61162-450, Multiple talkers and multiple listeners — Ethernet interconnection
IEC 61162-460, Multiple talkers and multiple listeners — Ethernet interconnection — Safety and Security
IEC 62923:2018, Maritime navigation and radiocommunication equipment and systems — Bridge alert
management
IMO Resolution MSC 302(87), Adoption of performance standards for Bridge Alert Management
IMO Resolution MSC 333(90), Adoption of revised performance standards for shipborne voyage data
recorders (VDRs)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1
administration
government of the State under whose authority the ship is operating
Note 1 to entry: With respect to fixed or floating platforms engaged in exploration and exploitation of the sea-bed
and subsoil thereof adjacent to the coast over which the coastal State exercises sovereign rights for the purposes
of exploration and exploitation of their natural resources, the administration is the government of the coastal
State concerned.
3.2
analytical evaluation
detailed examination of the presentation of information to confirm that a particular condition has
been met
Note 1 to entry: Analytical evaluations can be made by a relevant expert with the necessary education, skills
and/or experience to make an informed and reliable judgement concerning the presentation of information,
its appropriateness, and usability. It is used for the evaluation of properties which can be judged only in the
context of other information or knowledge which requires the tester presentation. Compliance is determined by
comparing the observed property to the requirement.
3.3
audit logging
logs recording user activities, exceptions, and information security events, where logs are kept for an
agreed period to assist in future investigations and access control monitoring
3.4
authorized person
operator with enough clearance to handle an electronic record book (ELRB) (3.12) appointed by the
ships master
Note 1 to entry: Each authorized person is registered on the electronic approval system (3.11), and the authorized
person is controlled by the personal name or another personal identification data such as the passport number.
3.5
automatic record
data input generated by any other electronic device integrated to the electronic record book (ELRB) (3.12)
3.6
back-up
means to make a duplicate copy of a file, program, etc. as a safeguard against loss or corruption of the
original
3.7 data
3.7.1
automatically collected data
data that has been collected and stored by automatic means but has not been approved by a human user
3.7.2
edit history data
history of changes in one record, including the editor, edited content and time and date of the edit
3.7.3
record book data
data entered manually by an authenticated user, or if based on automatically collected data (3.7.1) after
an authenticated user has verified it
Note 1 to entry: This data must be included in all output, backups, sending to VDR, etc.
3.7.4
signed record book data
data which is closed from editing after having been signed by the master
3.8
bridge
area from which the navigation and control of the ship is exercised, including the wheelhouse and
bridge wings
[SOURCE: ISO 8468:2007, 3.1.7]
2 © ISO 2019 – All rights reserved

3.9
bridge configuration
shape of the bridge (3.8), comprising the outer bulkheads and windows of the bridge are
...