ISO 24482:2023

Large yachts — Navigational bridge visibility

This document specifies requirements for the field of vision from the defined working positions on the bridge of large yachts. It is applicable to large yachts with a length of 24 m or over. NOTE This document supports the aims of SOLAS, Chapter V, Regulation 22.

Grands yachts — Visibilité à la passerelle de navigation

General Information

• Status: Published
• Publication Date: 12-Mar-2023
• ICS: 47.040 - Seagoing vessels
• Technical Committee: ISO/TC 8/SC 12 - Ships and marine technology - Large yachts
• Drafting Committee: ISO/TC 8/SC 12/WG 5 - Quality assessment and acceptance criteria
• Current Stage: 6060 - International Standard published
• Start Date: 13-Mar-2023
• Due Date: 19-Sep-2023
• Completion Date: 13-Mar-2023

Relations

• Consolidated By: ISO 16486-3:2025 - Plastics piping systems for the supply of gaseous fuels — Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing — Part 3: Fittings
• Effective Date: 28-Oct-2023

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 24482
First edition
2023-03
Large yachts — Navigational bridge
visibility
Grands yachts — Visibilité à la passerelle de navigation
Reference number
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Bridge construction .3
4.1 Bridge position . 3
4.2 Lower edge of front windows . 4
4.3 Upper edge of front windows . 4
4.4 Upper edge of navigational consoles. 4
4.5 Inclination of windows . 4
4.6 Curved windows . 5
4.7 Window breadth . 5
4.8 Framing of windows . 6
4.8.1 General . 6
4.8.2 Frame insulation . 6
4.8.3 Maximum frame size . 6
4.9 Window tinting . 6
4.10 Clear view . . . 6
4.11 Removable sunscreens . 7
4.12 Working positions. 7
4.13 Bridge wings . 7
5 Navigational bridge visibility . 7
5.1 Typical bridge arrangement . 7
5.2 Position of the eye . 8
5.3 View of the sea surface . 8
5.4 Horizontal field of vision . 8
5.5 Vertical field of vision . 9
5.5.1 Vertical field of vision from the conning position above the horizontal plane . 9
5.5.2 Vertical field of vision from the conning position below the horizontal plane . 9
5.6 Blind sectors . 9
5.7 Clear sector .13
5.8 Field of vision from the docking position . 13
6 Test procedure .14
6.1 General . 14
6.2 Design stage . 14
6.3 Harbour acceptance test . 15
6.4 Tests for optical properties of the glass . 15
Bibliography .16
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
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This document was prepared by Technical Committee ISO/TC 8, Ships and marine technology,
Subcommittee SC 12, Large yachts.
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
Introduction
The purpose for having a standard on bridge visibility for large yachts was triggered by the fact that the
International Convention for the Safety of Life at Sea (SOLAS) of the International Maritime Organization
(IMO) does not provide dedicated regulations for large yachts. Typically, large yachts are regulated by
means of interpretations and one-off exemptions by the local surveyors. The statutory regulations do
not give any unambiguous guidance or regulations for bridge visibility.
Hence, this document is considered as a way forward to create a clear and level playing field for the
[2][3][10]
large yachts industry that builds the yachts according to the applicable Yacht Code . It is based on
[1] [5]
IMO SOLAS, Chapter V, IMO MSC Circ.982 and IMO MSC Circ.1350 . It also addresses some aspects of
[12]
the “unconventional design” as mentioned in SOLAS, Chapter V, Regulation 22.3 .
The industry can benefit from this document in a way that suits the yacht design and considers the safe
navigation of yachts. The document aims to enable users to save time in the designing and building of
wheelhouses.
v
INTERNATIONAL STANDARD ISO 24482:2023(E)
Large yachts — Navigational bridge visibility
1 Scope
This document specifies requirements for the field of vision from the defined working positions on the
bridge of large yachts.
It is applicable to large yachts with a length of 24 m or over.
[12]
NOTE This document supports the aims of SOLAS, Chapter V, Regulation 22 .
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
blind sector
measured arc from a position that indicates an obstructed view of the sea surface by any fixed object
outside or inside the wheelhouse
Note 1 to entry: See 5.6 to determine the field of vision (3.6) from a working position.
3.2
bridge
area from which the navigation and control of the yacht is exercised, including the wheelhouse and
bridge wings (3.3)
3.3
bridge wing
part of the bridge (3.2), on both sides of the yacht’s wheelhouse, which, in general, extends to the yacht’s
side
3.4
external obstruction
any loose item that is placed on the deck and that can be repositioned by the crew
3.5
docking operation
manoeuvring of the yacht alongside a berth, another yacht or other structure, and control of the
mooring operations
3.6
field of vision
angular size of scenery being observable from a position within the yacht’s bridge (3.2)
3.7
flybridge
open area on the highest deck that provides unobstructed views to the fore, the aft and the sides of the
yacht and is equipped to be used for the working positions
3.8
glare
excessive demand for visual adaptation brought on by the retina's exposure to more light than it can
tolerate
Note 1 to entry: It is produced when any luminance within the visual field is sufficiently greater than the
luminance to which the eye is adjusted.
3.9
reflection
return of light from a surface, and production of an image by or as if by a mirror
3.10
height of eye
vertical distance of the centre of the eye above the finished interior floor of the bridge deck at a working
position
3.11
helmsman
designated person who steers the yacht under way
3.12
length
distance from the forward side of the stem to the aftermost side of the stern including the bulwark, but
without bowsprit, pulpit, fla
...