ISO 24482

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: Not Published
• 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: 6000 - International Standard under publication
• Completion Date: 04-Feb-2023

Standards Content (Sample)

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 24482
ISO/TC 8/SC 12
Large yachts — Navigational bridge
Secretariat: UNI
visibility
Voting begins on:
2022-12-09
Voting terminates on:
2023-02-03
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 24482:2022(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2022
---------------------- Page: 1 ----------------------
ISO/FDIS 24482:2022(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 24482
ISO/TC 8/SC 12
Large yachts — Navigational bridge
Secretariat: UNI
visibility
Voting begins on:
Voting terminates on:
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on

the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below

or ISO’s member body in the country of the requester.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: [phone]
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: [e-mail]
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 24482:2022(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
© ISO 2022 – All rights reserved
NATIONAL REGULATIONS. © ISO 2022
---------------------- Page: 2 ----------------------
ISO/FDIS 24482:2022(E)
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
© ISO 2022 – All rights reserved
---------------------- Page: 3 ----------------------
ISO/FDIS 24482:2022(E)
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 non­governmental, 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

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 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.
© ISO 2022 – All rights reserved
---------------------- Page: 4 ----------------------
ISO/FDIS 24482:2022(E)
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][12]

large yachts industry that builds the yachts according 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.
© ISO 2022 – All rights reserved
---------------------- Page: 5 ----------------------
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 24482:2022(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)

© ISO 2022 – All rights reserved
---------------------- Page: 6 ----------------------
ISO/FDIS 24482:2022(E)
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, flagpole and any other outfitting part
3.13
sunscreen

fabric that can be installed temporarily on all applicable bridge (3.2) windows in order to improve the

visibility and reduce eye strain in bright sunshine
3.14
totally enclosed bridge

bridge (3.2) without open bridge wings (3.3), so that the bridge wings form an integral part of an

enclosed wheelhouse
3.15
wheelhouse
enclosed area of the bridge (3.2)
3.16
window blind

opaque window-covering to keep light out of a certain space, i.e. to create privacy

3.17.1
conning position

position on the bridge (3.2) with a commanding view, used by navigators and pilots when commanding,

manoeuvring and controlling the yacht's movements
3.17.2
additional conning station

workstation used for navigation, providing a commanding view with access to radar and navigational

chart in addition to information required for conning, which can serve as an alternative conning station

for the navigator or pilot when required
© ISO 2022 – All rights reserved
---------------------- Page: 7 ----------------------
ISO/FDIS 24482:2022(E)
3.17.3
monitoring position

workstation from which the operating equipment and surrounding environment can be permanently

observed in seated/standing position
3.17.4
steering position
position of the helmsman to manually steer the yacht
3.17.5
docking position

position of the navigator or pilot from where docking operations (3.5) are conducted and mooring

operations can be supervised
3.17.6
navigating position

position on the bridge (3.2) where the navigator or pilot can make full appraisal of the situation in

navigating the yacht
4 Bridge construction
4.1 Bridge position

A horizontal field of vision to the horizon of 360° (at 1 nautical mile distance) shall be obtained by using

not more than two positions within the confines of the bridge (see Figure 1).

In case the nature of the yacht design complicates strict compliance with this requirement,

a) a flybridge can be assigned as the conning position, which can typically, but not exclusively, be the

case with sailing yachts, or
b) a remote camera system can be used [see 5.8 i
...

Error! Reference source not found.
Style Definition: Heading 1: Indent: Left: 0 pt, First line:
ISO/TC 8/SC 12 N 256
0 pt, Tab stops: Not at 21.6 pt
Style Definition: Heading 2: Font: Bold, Tab stops: Not at
ISO/TC 8/SC 12 N 256
18 pt
Style Definition: Heading 3: Font: Bold
Date: 2021-03-15 2022-11-24
Style Definition: Heading 4: Font: Bold
ISO/WD 24482:2019(E)
Style Definition: Heading 5: Font: Bold
Style Definition: Heading 6: Font: Bold
ISO/TC 8/SC 12/WG 5
Style Definition: ANNEX
ISO/FDIS 24482:2022(E) Style Definition: AMEND Terms Heading: Font: Bold
Style Definition: AMEND Heading 1 Unnumbered: Font:
ISO/TC 8/SC 12/WG 5 Bold
Style Definition: Unresolved Mention2
Secretariat: UNI UNI
Formatted: French (Switzerland)
Formatted: French (Switzerland)
Large yachts — Navigational bridge visibility
Formatted: French (Switzerland)

Grands yachts — Visibilité à la passerelle de navigation Formatted: French (Switzerland)

Document type: Error! Reference source not found.
Document subtype: Error! Reference source not found.
Document stage: Error! Reference source not found.
Document language: Error! Reference source not found.
Document date: 2022-11-25
No. of pages: 34
Error! Reference source not found.
---------------------- Page: 1 ----------------------
Error! Reference source not found.
Copyright notice
ThisLarge yachts — Navigational bridge visibility
Grands yachts — Visibilité à la passerelle de navigation
Document type: Error! Reference source not found.
Document subtype: Error! Reference source not found.
Document stage: Error! Reference source not found.
Document language: Error! Reference source not found.
Document date: 2022-11-25
No. of pages: 34
Error! Reference source not found.
---------------------- Page: 2 ----------------------
ISO/DIS 24482:2021(E)
© ISO document is a working draft2022

All rights reserved. Unless otherwise specified, or committee draft and is copyright-protected by

ISO. While required in the reproduction of working drafts or committee drafts in any form for use

by participants in the ISO standards development process is permitted without prior permission

from ISO, neithercontext of its implementation, no part of this document nor any extract from

itpublication may be reproduced, stored or utilized otherwise in any form or transmitted in any

form for any other purposeby any means, electronic or mechanical, including photocopying, or

posting on the internet or an intranet, without prior written permission. Permission can be

requested from either ISO.

Requests for permission to reproduce this document for at the purpose of selling it should be Formatted: Line spacing: At least 12 pt

addressed as shownaddress below or to ISO's member body in the country of the requester:.

Ente Nazionale Italiano di Unificazione
Via Sannio, 2
I-20137 Milano
Italy
Tel: [phone]ISO Copyright Office
CP 401 • CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11 Formatted: Justified, Line spacing: At least 12 pt
Formatted: English (United Kingdom)
Fax: [phone]
Formatted: English (United Kingdom)

E-mail: [e-mail] Reproduction for sales purposes may be subject to royalty payments

or a licensing agreement.
Violators may be prosecuted.
Email: [e-mail]
Website: www.iso.org
Published in Switzerland.
iv © ISO 2021 – All rights reserved
---------------------- Page: 3 ----------------------
ISO/DIS 24482:2021(E)
Contents Page

Foreword ....................................................................................................................................................................... v

Introduction ............................................................................................................................................................... vi

1 Scope ................................................................................................................................................................ 1

2 Normative references ................................................................................................................................ 1

3 Terms and definitions ................................................................................................................................ 1

3.1 Blind sector ................................................................................................................................................... 1

3.2 Bridge .............................................................................................................................................................. 1

3.3 Bridge wing.................................................................................................................................................... 2

3.4 Commanding view ....................................................................................................................................... 2

3.5 Docking operation ....................................................................................................................................... 2

3.6 Field of Vision ............................................................................................................................................... 2

3.7 Flying bridge ................................................................................................................................................. 2

3.8 Glare and reflection .................................................................................................................................... 2

3.9 Height of eye .................................................................................................................................................. 2

3.10 Helmsman ...................................................................................................................................................... 2

3.11 Length .............................................................................................................................................................. 2

3.12 Non view obstructive objects ................................................................................................................... 3

3.13 Sunscreen ....................................................................................................................................................... 3

3.14 Totally enclosed bridge ............................................................................................................................. 3

3.15 Wheelhouse ................................................................................................................................................... 3

3.16 Window blind ............................................................................................................................................... 3

3.17 Workstations on the bridge ..................................................................................................................... 3

3.17.1 Conning position .......................................................................................................................................... 3

3.17.2 Additional conning station ....................................................................................................................... 3

3.17.3 Monitoring position .................................................................................................................................... 3

3.17.4 Steering position .......................................................................................................................................... 3

3.17.5 Docking position .......................................................................................................................................... 4

3.17.6 Navigating position ..................................................................................................................................... 4

4 Bridge construction .................................................................................................................................... 4

4.1 Bridge position ............................................................................................................................................. 4

4.2 Lower edge of front windows .................................................................................................................. 4

4.3 Upper edge of front windows .................................................................................................................. 5

4.4 Upper edge of navigational consoles ..................................................................................................... 5

4.5 Inclination of windows .............................................................................................................................. 5

4.6 Curved windows .......................................................................................................................................... 5

4.7 Window breadth .......................................................................................................................................... 5

4.8 Framing of windows ................................................................................................................................... 5

4.9 Window tinting ............................................................................................................................................. 5

4.10 Clear view ....................................................................................................................................................... 5

4.11 Removable sunscreens .............................................................................................................................. 6

4.12 Working positions ....................................................................................................................................... 6

4.13 Bridge wings .................................................................................................................................................. 6

5 Navigational bridge visibility .................................................................................................................. 7

5.1 Typical Bridge arrangement .................................................................................................................... 7

5.2 View of the sea surface ............................................................................................................................... 7

5.3 Horizontal field of vision ........................................................................................................................... 7

5.4 Vertical field of vision ................................................................................................................................ 8

5.5 Blind sectors ................................................................................................................................................. 9

© ISO 2021 – All rights reserved v
---------------------- Page: 4 ----------------------
ISO/DIS 24482:2021(E)

5.6 Clear sector .................................................................................................................................................. 10

5.7 Field of vision from the docking position .......................................................................................... 10

5.8 Radar antenna's ......................................................................................................................................... 12

6 Test procedure ........................................................................................................................................... 12

6.1 Design stage ................................................................................................................................................. 13

6.2 Harbor acceptance test ............................................................................................................................ 13

6.3 Tests for optical properties of the glass ............................................................................................. 13

7 Bibliography ................................................................................................................................................ 15

Foreword ..................................................................................................................................................................... iv

Introduction ................................................................................................................................................................. v

1 Scope ................................................................................................................................................................ 1

2 Normative references ................................................................................................................................ 1

3 Terms and definitions ................................................................................................................................ 1

4 Bridge construction .................................................................................................................................... 4

4.1 Bridge position ............................................................................................................................................. 4

4.2 Lower edge of front windows .................................................................................................................. 5

4.3 Upper edge of front windows .................................................................................................................. 5

4.4 Upper edge of navigational consoles ..................................................................................................... 5

4.5 Inclination of windows .............................................................................................................................. 6

4.6 Curved windows .......................................................................................................................................... 8

4.7 Window breadth .......................................................................................................................................... 8

4.8 Framing of windows ................................................................................................................................... 8

4.8.1 General ............................................................................................................................................................ 8

4.8.2 Frame insulation .......................................................................................................................................... 8

4.8.3 Maximum frame size .................................................................................................................................. 8

4.9 Window tinting ............................................................................................................................................. 9

4.10 Clear view ....................................................................................................................................................... 9

4.11 Removable sunscreens ............................................................................................................................ 10

4.12 Working positions ..................................................................................................................................... 10

4.13 Bridge wings ................................................................................................................................................ 10

5 Navigational bridge visibility ................................................................................................................ 10

5.1 Typical bridge arrangement .................................................................................................................. 10

5.2 Position of the eye ..................................................................................................................................... 11

5.3 View of the sea surface ............................................................................................................................. 11

5.4 Horizontal field of vision ......................................................................................................................... 12

5.5 Vertical field of vision .............................................................................................................................. 14

5.5.1 Vertical field of vision from the conning position above the horizontal plane ..................... 14

5.5.2 Vertical field of vision from the conning position below the horizontal plane ..................... 14

5.6 Blind sectors ............................................................................................................................................... 14

5.7 Clear sector .................................................................................................................................................. 19

5.8 Field of vision from the docking position .......................................................................................... 20

6 Test procedure ........................................................................................................................................... 21

6.1 General .......................................................................................................................................................... 21

6.2 Design stage ................................................................................................................................................. 22

6.3 Harbour acceptance test ......................................................................................................................... 22

6.4 Tests for optical properties of the glass ............................................................................................. 22

Bibliography.............................................................................................................................................................. 24

vi © ISO 2021 – All rights reserved
---------------------- Page: 5 ----------------------
ISO/DIS 24482:2021(E)
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/directiveswww.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/patentswww.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.htmlwww.iso.org/iso/foreword.html.

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.htmlwww.iso.org/members.html.
© ISO 2021 – All rights reserved vii
---------------------- Page: 6 ----------------------
ISO/DIS 24482:2021(E)
Introduction

The purpose for having a standard on bridge visibility standard 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 International Convention for the Safety of Life at Sea (SOLAS) 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 was feltis considered as a sensible way forward to create a clear and level playing

Formatted: Don't adjust space between Latin and Asian
[2][3][12] text, Don't adjust space between Asian text and numbers

field for the large yachts industry. that builds the yachts according the applicable Yacht Code . It is

[ ] [ ] ]

based on IMO SOLAS, Chapter V, IMO MSC Circ.982 1 and IMO MSC Circ.1350 5 , and it . It also addresses

Formatted: cite_bib, Not Superscript/ Subscript
[12]

some aspects of the “unconventional design” as mentioned in SOLAS, Chapter V, Regulation 22.3 . The

Formatted: cite_bib, Not Superscript/ Subscript
[2][3][10]

terms and definitions given in the applicable Yacht code have been considered when drafting this

[12]
document. .

Industry willThe industry can benefit from this document in a way that suits the yacht design and

considers the safe navigation of yachts. It will allowThe document aims to enable users to save time forin

the designing and building of wheelhouses.

This document is expected to be endorsed by state authorities, to be included in the future updates of

their Codes. Ultimately, it could also be included in a SOLAS revision.
viii © ISO 2021 – All rights reserved
---------------------- Page: 7 ----------------------
ISO/DISFDIS 24482:20212022(E)
Large yachts — Navigational bridge visibility
© ISO 20212022 – All rights reserved ix
---------------------- Page: 8 ----------------------
FINAL DRAFT INTERNATIONAL STANDARD ISO/DISFDIS 24482:20212022(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.
NOTE This document supports the aims of SOLAS, Chapter V, Regulation 22 [12].
Formatted: Default Paragraph Font, Not Superscript/
Subscript
2 Normative references
Formatted: cite_bib, Not Superscript/ Subscript
Formatted: Default Paragraph Font, Not Superscript/

The following documents are referred to in the text in such a way that some or all of their content

Subscript

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.

ISO 8468:2007, Ships and marine technology — Ship's bridge layout and associated equipment —

Requirements and guidelines
There are no normative references in this document.
Formatted: English (United States)
3 Terms and definitions
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
For the purposes of this document, the following terms and definitions apply.
Formatted: English (United States)

ISO and IEC maintain terminologicalterminology databases for use in standardization at the following

Formatted: Font: Times New Roman, 12 pt, English
addresses:
(United States)

— ISO Online browsing platform: available at https://www.iso.org/obphttps://www.iso.org/obp

Formatted: English (United States)
Formatted: Adjust space between Latin and Asian text,

— IEC Electropedia: available at https://www.electropedia.org/https://www.electropedia.org/

Adjust space between Asian text and numbers, Tab stops:
Not at 19.85 pt + 39.7 pt + 59.55 pt + 79.4 pt + 99.25
3.1 3.1 pt + 119.05 pt + 138.9 pt + 158.75 pt + 178.6 pt +
198.45 pt
blind sector

measured arc from a position that indicates an obstructed view of the sea surface by any fixed object Formatted: Hyperlink, English (United States)

outside or inside the wheelhouse
Formatted: English (United States)
Formatted: Hyperlink, English (United States)

Note 1 to entry: See 5.6 to determine the field of vision (3.6) from a working position.

Formatted: TermNum, Don't adjust space between Latin
and Asian text, Don't adjust space between Asian text and
3.2 3.2
numbers
bridge
Formatted: cite_sec

area from which the navigation and control of the yacht is exercised, including the wheelhouse and bridge

Formatted: TermNum, Don't adjust space between Latin
wings (3.3)
and Asian text, Don't adjust space between Asian text and
numbers
3.3 3.3
Formatted: cite_sec
bridge wing

part of the bridge (3.2), on both sides of the yacht’s wheelhouse, which, in general, extends to the yacht’s Formatted: TermNum, Don't adjust space between Latin

and Asian text, Don't adjust space between Asian text and
side
numbers
Formatted: cite_sec
© ISO 20212022 – All rights reserved 1
---------------------- Page: 9 ----------------------
ISO/DISFDIS 24482:20212022(E)
3.4
commanding view

view, without obstructions that can interfere with the navigator’s or pilot’s ability to perform their main

tasks, at least covering the field of vision (3.6) required for safe performance of collision avoidance

functions
Note 1 to entry: See 5.2 and 5.3.
3.5
3.4
external obstruction

any loose item that is placed on the deck and that can be repositioned by the crew Formatted: Don't adjust space between Latin and Asian

text, Don't adjust space between Asian text and numbers
3.6 3.5
docking operation

manoeuvring of the yacht alongside a berth, another yacht or other structure, and control of the mooring

operations
3.7 3.6 Formatted: TermNum, Don't adjust space between Latin
and Asian text, Don't adjust space between Asian text and
field of vision
numbers

angular size of scenery being observable from a position within the yacht’s bridge (3.2)

Formatted: cite_sec
3.8 3.7 Formatted: TermNum, Don't adjust space between Latin
and Asian text, Don't adjust space between Asian text and
flybridge
numbers

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
Note 1 to entry: See 3.18.
3.9
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

Formatted: Note, Tab stops: 19.85 pt, Left + 39.7 pt, Left

to which the eye is adjusted. + 59.55 pt, Left + 79.4 pt, Left + 99.25 pt, Left + 119.05

pt, Left + 138.9 pt, Left + 158.75 pt, Left + 178.6 pt, Left
+ 198.45 pt, Left
3.10 3.9
Formatted: TermNum, Don't adjust space between Latin
reflection
and Asian text, Don't adjust space between Asian text and

return of light from a surface, and production of an image by or as if by a mirror

numbers
3.11 3.10 Formatted: TermNum, Don't adjust space between Latin
and Asian text, Don't adjust space between Asian text and
height of eye
numbers

vertical distance of the centre of the eye above the finished interior floor of the bridge deck at a working

position
Formatted: TermNum, Don't adjust space between Latin
3.12 3.11
and Asian text, Don't adjust space between Asian text and
helmsman
numbers
designated person who steers the yacht under way
Formatted: TermNum, Don't adjust space between Latin
3.13 3.12
and Asian text, Don't adjust space between Asian text and
length
numbers
2 © ISO 20212022 – All rights reserved
---------------------- Page: 10 ----------------------
ISO/DISFDIS 24482:2021(E)

distance from the forward side of the stem to the aftermost side of the stern including the bulwark, but

without bowsprit, pulpit, flagpole and any other outfitting part
3.14 3.13 Formatted: TermNum, Don't keep lines together, Don't
adjust space between Latin and Asian text, Don't adjust
sunscreen
space between Asian text and numbers

fabric that can be installed temporarily on all applicable bridge (3.2) windows in order to improve the

Formatted: cite_sec
visibility and reduce eye strain in bright sunshine
3.15 3.14 Formatted: TermNum, Don't adjust space between Latin
and Asian text, Don't adjust space between Asian text and
totally enclosed bridge
numbers
bridge (3.2) without open bridge wings (3.3), s
...