EN ISO 12215-8:2018

SLOVENSKI STANDARD
01-december-2018
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SIST EN ISO 12215-8:2009
SIST EN ISO 12215-8:2009/AC:2011
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Small craft - Hull construction and scantlings - Part 8: Rudders (ISO 12215-8:2009,
including Cor 1:2010)
Kleine Wasserfahrzeuge - Rumpfbauweise und Dimensionierung - Teil 8: Ruder (ISO
12215-8:2009, einschließlich Cor 1:2010)
Petits navires - Construction de coques et échantillonnage - Partie 8: Gouvernails (ISO
12215-8:2009; y compris Cor 1:2010)
Ta slovenski standard je istoveten z: EN ISO 12215-8:2018
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.

EN ISO 12215-8
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2018
EUROPÄISCHE NORM
ICS 47.080 Supersedes EN ISO 12215-8:2009
English Version
Small craft - Hull construction and scantlings - Part 8:
Rudders (ISO 12215-8:2009, including Cor 1:2010)
Petits navires - Construction de coques et Kleine Wasserfahrzeuge - Rumpfbauweise und
échantillonnage - Partie 8: Gouvernails (ISO 12215- Dimensionierung - Teil 8: Ruder (ISO 12215-8:2009,
8:2009; y compris Cor 1:2010) einschließlich Cor 1:2010)
This European Standard was approved by CEN on 16 April 2018.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12215-8:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of Directive 2013/53/EU aimed to be covered . 4
European foreword
The text of ISO 12215-8:2009, including Cor 1:2010 has been prepared by Technical Committee
ISO/TC 188 “Small craft” of the International Organization for Standardization (ISO) and has been taken
over as EN ISO 12215-8:2018.
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 April 2019, and conflicting national standards shall be
withdrawn at the latest by April 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 12215-8:2009.
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 2013/53/EU.
For relationship with EU Directive 2013/53/EU, 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, Former Yugoslav Republic of Macedonia, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,
Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
the United Kingdom.
Endorsement notice
The text of ISO 12215-8:2009, including Cor 1:2010 has been approved by CEN as EN ISO 12215-8:2018
without any modification.
Annex ZA
(informative)
Relationship between this European Standard and the Essential
Requirements of Directive 2013/53/EU aimed to be covered
This European standard has been prepared under a Commission’s standardization request M/542
C(2015) 8736 final to provide one voluntary means of conforming to Essential Requirements of Directive
2013/53/EU.
Once this standard is cited in the Official Journal of the European Union under that Directive, 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 corresponding Essential Requirements of that
Directive and associated EFTA regulations.
Table ZA.1 — Correspondence between this European Standard and Annex I of Directive
2013/53/EU
Essential Requirements Clause(s)/sub- Remarks/Notes
of Directive 2013/53/EU clause(s) of
this EN
Annex I, Part A, 2.5 – 7.2, 7.3, 12.1 These clauses specify warnings and information to
Owner’s manual be included in the owner’s manual, if relevant.
Annex I, Part A, 3.1 - All clauses This part of this standard provides scantling
Structure requirements applicable to five types of rudder

configuration: Type I to Type V, as shown in Figures
2 and 3 of clause 6.2. It applies only to monohulls.
The application of this part of this standard does not
ensure proper steering capabilities.
Single bearing spade rudders and single hull bearing
skeg rudders are not addressed by this standard.
Annex I, Part A, 5.4.2 - 6.1.6 In respect of the ability of emergency tiller
Steering system – components to transmit rudder torque.
Emergency arrangements
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
Standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
INTERNATIONAL ISO
STANDARD 12215-8
First edition
2009-05-15
Small craft — Hull construction and
scantlings —
Part 8:
Rudders
Petits navires — Construction de coques et échantillonnage —
Partie 8: Gouvernails
Reference number
ISO 12215-8:2009(E)
©
ISO 2009
ISO 12215-8:2009(E)
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ISO 12215-8:2009(E)
Contents Page
Foreword. v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 1
4 Symbols . 2
5 Design stresses . 4
5.1 Rudder material. 4
6 Rudder and steering arrangement, rudder types . 5
6.1 General. 5
6.2 Rudder types . 6
7 Design rudder force calculation. 10
7.1 General. 10
7.2 Force F and corresponding load case . 11
7.3 Force F and corresponding load case . 12
8 Rudder bending moment and reactions at bearings . 13
8.1 General. 13
8.2 Analysis of spade rudder (Type I). 13
8.3 Analysis of skeg rudders (Types II to V) . 14
9 Rudder design torque, T . 16
10 Rudder and rudder stock design . 17
10.1 Load bearing parts of the rudder . 17
10.2 Metal rudder stock material . 17
10.3 Design stress for metal rudder stock . 18
10.4 Required diameter for solid circular metal rudder stocks . 18
10.5 Vertical variation of the diameter of a Type I rudder (spade). 18
10.6 Round tubular stocks. 19
10.7 Non-circular metal rudder stocks . 20
10.8 Simple non-isotropic rudder stocks (e.g. wood or FRP). 21
10.9 Complex structural rudders and rudder stocks in composite. 21
10.10 Check of deflection of Type I rudder stocks between bearings . 21
11 Equivalent diameter at the level of notches.22
12 Rudder bearings, pintles and gudgeons. 22
12.1 Bearing arrangement. 22
12.2 Clearance between stock and bearings . 23
13 Rudder stock structure and rudder construction . 24
13.1 Rudder stock structure .
...