ISO 24409-1:2020

INTERNATIONAL ISO
STANDARD 24409-1
Second edition
2020-03
Ships and marine technology —
Design, location and use of shipboard
safety signs, fire control plan signs,
safety notices and safety markings —
Part 1:
Design principles
Navires et technologie maritime — Conception, emplacement et
utilisation des signaux de sécurité, signaux relatifs à la sécurité, notes
de sécurité et marquages de sécurité à bord des navires —
Partie 1: Principes de conception
Reference number
©
ISO 2020
© ISO 2020
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Published in Switzerland
ii © ISO 2020 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Types and use of signs, markings and notices . 2
4.1 General . 2
4.2 Safety signs . 3
4.2.1 Means of escape signs (MES) — Escape route identification . 3
4.2.2 Emergency equipment signs (EES) — Use and location of first aid
facilities and portable safety equipment . 3
4.2.3 Life-saving systems and appliances signs (LSS) — Use and location of life-
saving systems and appliances . 3
4.2.4 Fire-fighting equipment signs (FES) — Use and location of fire-fighting
equipment . . . 3
4.2.5 Prohibition signs (PSS) — Prohibited actions . 3
4.2.6 Warning signs (WSS) — Identification of hazards . 3
4.2.7 Mandatory action signs (MSS) — Mandatory notices and instructions . 3
4.3 Fire control plan signs . 3
5 Design of shipboard safety signs . 3
5.1 General . 3
5.2 Safety messages. 4
5.3 Meaning, function, and image content . 4
5.4 Colour and geometric shape. 4
5.4.1 General. 4
5.4.2 Colour area of the safety sign . 5
5.5 Graphical symbols . 6
5.6 Combination of graphical symbols or graphical symbol elements . 6
5.7 Determinants . 6
5.8 Prohibition . 7
5.9 Borders . 7
5.10 Arrows . 7
6 Supplementary signs and combination signs . 8
6.1 General . 8
6.2 Combination signs. 8
6.3 Colour of supplementary signs . 8
6.4 Text for supplementary signs . 8
6.5 Types of supplementary signs . 8
7 Layout of combination signs .12
7.1 General .12
7.2 Borders .12
7.3 Arrangements .12
8 Multiple signs .13
9 Use of arrows .14
10 Fire control plan signs .15
11 Safety markings .16
12 Illumination and contrast of safety signs and fire control plan signs .16
13 Durability and photometric performance of signs .17
14 Marking of signs .17
Bibliography .18
iv © ISO 2020 – All rights reserved

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
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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
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 8, Ships and marine technology,
Subcommittee SC 1, Maritime safety.
This second edition cancels and replaces the first edition (ISO 24409-1:2010), which has been
technically revised.
The main changes compared to the previous edition are as follows:
— addition of the definition and use of “fire control plan sign”;
— deletion of references to “mimic signs”;
— updated graphics from ISO 7010; and
— updated graphics from ISO 24409-2.
A list of all parts in the ISO 24409 series can be found on the ISO website.
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.
Introduction
The growth of international travel by ship has created a need to provide people travelling and working
on board ships with signs and associated systems that communicate consistent and effective safety
information. The ISO 24409 series specifies a system of safety and fire control plan signs on ships and
other marine installations that is generally consistent with standardized signs with which many will
have gained familiarity in other applications.
As such, the ISO 24409 series clarifies and supplements existing requirements set out in SOLAS
regulations II-2/13.3.2.5.1, III/9.2.3 and III/11.5, and in ISO 17631. However, it is directly applicable to
shipboard safety and fire control plan signs only, and does not deal with graphical symbols to be used
on shipboard plans or documentation used for professionals.
This document spells out general design principles applicable to all types of shipboard safety and
fire control plan signs. Specific signs are catalogued in ISO 24409-2, and their application on ships is
specified in ISO 24409-3. Shipboard plans for general emergency information will be specified in a
1)
future part in the ISO 24409 series.
1) Planned for future work: ISO 24409-4, Ships and marine technology — Design, location and use of shipboard
safety signs, safety-related signs, safety notices and safety markings — Part 4:
...