EN ISO 12215-9:2012

SLOVENSKI STANDARD
01-september-2012
Mala plovila - Konstrukcija trupa in dimenzioniranje - 9. del: Dodatni pribor jadrnic
(ISO 12215-9:2012)
Small craft - Hull construction and scantlings - Part 9: Sailing craft appendages (ISO
12215-9:2012)
Kleine Wasserfahrzeuge - Rumpfbauweise und Dimensionierung - Teil 9: Segelboote -
Anhänge und Takelagezubehör (ISO 12215-9:2012)
Petits navires - Construction de coques et échantillonnage - Partie 9: Appendices des
bateaux à voiles (ISO 12215-9:2012)
Ta slovenski standard je istoveten z: EN ISO 12215-9:2012
ICS:
47.020.10 Ladijski trupi in njihovi Hulls and their structure
konstrukcijski elementi elements
47.080 ýROQL Small craft
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 12215-9
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2012
ICS 47.080
English Version
Small craft - Hull construction and scantlings - Part 9: Sailing
craft appendages (ISO 12215-9:2012)
Petits navires - Construction de coques et échantillonnage - Kleine Wasserfahrzeuge - Rumpfbauweise und
Partie 9: Appendices des bateaux à voiles (ISO 12215- Dimensionierung - Teil 9: Anhänge von Segelbooten (ISO
9:2012) 12215-9:2012)
This European Standard was approved by CEN on 9 April 2012.

CEN 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 CEN 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 CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12215-9:2012: E
worldwide for CEN national Members.

Contents Page
Foreword .3
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 94/25/EC as amended by Directive 2003/44/EC .4

Foreword
This document (EN ISO 12215-9:2012) has been prepared by Technical Committee ISO/TC 188 "Small craft".
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by December 2012, and conflicting national standards shall be withdrawn
at the latest by December 2012.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive.
For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 12215-9:2012 has been approved by CEN as a EN ISO 12215-9:2012 without any
modification.
Annex ZA
(informative)
Relationship between this European Standard and the Essential
Requirements of EU Directive 94/25/EC as amended by
Directive 2003/44/EC
This European Standard has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association to provide one means of conforming to Essential Requirements of
the New Approach Directive 94/25/EC as amended by 2003/44/EC on Recreational Craft.
Once this standard is cited in the Official Journal of the European Union under that Directive and has been
implemented as a national standard in at least one Member State, compliance with the normative clauses of
this standard given in Table ZA.1 confers, within the limits of the scope of this standard, a presumption of
conformity with the relevant Essential Requirements of that Directive and associated EFTA regulations.
Table ZA.1: Correspondence between this European Standard and Directive 94/25/EC as amended by
Directive 2003/44/EC
Clauses/sub-clauses of this Essential requirements (ERs) of Qualifying remarks/Notes
European Standard EU Directive 94/25/EC as amended
by Directive 2003/44/EC
All clauses Annex I, A, Clause 3.1 The standard provides
requirements for strength of
monohull sailing boat appendages
with conventional keel
configurations
WARNING: Other requirements and other EU Directives may be applicable to the product(s) falling within the
scope of this standard.
INTERNATIONAL ISO
STANDARD 12215-9
First edition
2012-06-15
Small craft — Hull construction and
scantlings —
Part 9:
Sailing craft appendages
Petits navires — Construction de la coque et échantillonnage —
Partie 9: Appendices des bateaux à voiles

Reference number
ISO 12215-9:2012(E)
©
ISO 2012
ISO 12215-9:2012(E)
©  ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
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Published in Switzerland
ii © ISO 2012 – All rights reserved

ISO 12215-9:2012(E)
Contents Page
Foreword . iv
Introduction . v
1  Scope . 1
2  Normative references . 1
3  Terms and definitions . 2
4  Symbols . 3
5  Design stresses . 4
6  Structural components to be assessed . 6
7  Load cases . 6
7.1  General . 6
7.2  Load case 1 — Fixed keel at 90° knockdown . 7
7.3  Load case 2 — Canted keel steady load at 30° heel with dynamic overload factor . 8
7.4  Load case 3 — Keelboat vertical pounding . 9
7.5  Load case 4 — Keelboat longitudinal impact . 10
7.6  Load case 5 — Centreboard on capsize recoverable dinghies . 11
7.7  Load case 6 — Centreboard or dagger board upwind . 11
7.8  Other load cases . 12
8  Computational methods . 15
8.1  General . 15
8.2  General guidance for assessment by 3D numerical procedures . 15
8.3  Assessment by strength of materials/non-computational-based methods . 16
9  Compliance . 16
Annex A (normative) Application declaration . 18
Annex B (informative) Information on metal for appendages and fasteners and
“established practice” for fastening and welding . 19
Annex C (informative)  “Established practice” structural arrangement for ballast keels . 30
Annex D (informative) “Established practice” calculation of keel fin strength (fixed or canting)
and fixed ballast keel connected by bolts . 44
Annex E (informative) Geometrical properties of some typical appendage foil shapes . 61
Annex F (informative) Simplified fatigue strength assessment . 64
Bibliography . 76

ISO 12215-9:2012(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 12215-9 was prepared by Technical Committee ISO/TC 188, Small craft.
ISO 12215 consists of the following parts, under the general title Small craft — Hull construction and
scantlings:
 Part 1: Materials: Thermosetting resins, glass-fibre reinforcement, reference laminate
 Part 2: Materials: Core materials for sandwich construction, embedded materials
 Part 3: Materials: Steel, aluminium alloys, wood, other materials
 Part 4: Workshop and manufacturing
 Part 5: Design pressures for monohulls, design stresses, scantlings determination
 Part 6: Structural arrangements and details
 Part 7: Scantling determination of multihulls
 Part 8: Rudders
 Part 9: Sailing craft appendages
iv © ISO 2012 – All rights reserved

ISO 12215-9:2012(E)
Introduction
The reason underlying the preparation of this part of ISO 12215 is that standards and recommended practices
for loads on the hull and the dimensioning of small craft differ considerably, thus limiting the general worldwide
acceptability of craft.
The loss of a keel leading to craft capsize is one of the major casualty hazards on sailing craft and therefore
the structural efficiency of all elements of the keel and its connection to the craft is paramount.
This part of ISO 12215 specifies the design loads and their associated stress factors. The user then has a
choice between one or the other of t
...