SIST EN ISO 12217-3:2017

Small craft - Stability and buoyancy assessment and categorization - Part 3: Boats of hull length less than 6 m (ISO 12217-3:2015)

ISO 12217-3:2015 specifies methods for evaluating the stability and buoyancy of intact (i.e. undamaged) boats. The flotation characteristics of craft susceptible to swamping are also encompassed.
The evaluation of stability and buoyancy properties using ISO 12217-3:2015 will enable the boat to be assigned to a design category (C or D) appropriate to its design and maximum load.
ISO 12217-3:2015 is applicable to boats of hull length less than 6 m, whether propelled by human or mechanical power, except habitable sailing multihulls. Boats of hull length less than 6 m which are fitted with a full deck and quick-draining cockpit(s) complying with ISO 11812 may alternatively be assessed using ISO 12217‑1 or ISO 12217‑2 (for non-sailing and sailing boats, respectively), in which case higher design categories may be assigned.
In relation to habitable multihulls, ISO 12217-3:2015 includes assessment of susceptibility to inversion, definition of viable means of escape and requirements for inverted flotation.
ISO 12217-3:2015 excludes:
inflatable and rigid-inflatable boats covered by ISO 6185, except for references made in ISO 6185 to specific clauses of ISO 12217;
personal watercraft covered by ISO 13590 and other similar powered craft;
aquatic toys;
canoes and kayaks;
gondolas and pedalos;
sailing surfboards;
surfboards, including powered surfboards;
hydrofoils, foil stabilized boats and hovercraft when not operating in the displacement mode; and
submersibles.
NOTE Displacement mode means that the boat is only supported by hydrostatic forces.
ISO 12217-3:2015 does not include or evaluate the effects on stability of towing, fishing, dredging or lifting operations, which need to be separately considered if appropriate.

Kleine Wasserfahrzeuge - Stabilitäts- und Auftriebsbewertung und Kategorisierung - Teil 3: Boote unter 6 m Rumpflänge (ISO 12217-3:2015)

Petits navires - Évaluation et catégorisation de la stabilité et de la flottabilité - Partie 3: Bateaux d'une longueur de coque inférieure à 6 m (ISO 12217-3:2015)

L'ISO 12217-3:2015 spécifie les méthodes d'évaluation de la stabilité et de la flottabilité des bateaux à l'état intact (c'est à dire non endommagés). Les caractéristiques de flottabilité des bateaux susceptibles d'envahissement sont également comprises.
L'évaluation des propriétés de stabilité et de flottabilité faite en utilisant l'ISO 12217-3:2015 permettra d'attribuer à un bateau une catégorie de conception (C ou D) appropriée à sa conception et sa charge maximale.
L'ISO 12217-3:2015 est applicable aux bateaux d'une longueur de coque inférieure à 6 m, propulsés par l'énergie humaine ou une énergie mécanique, à l'exception des voiliers multicoques habitables. Les bateaux d'une longueur de coque inférieure à 6 m qui sont entièrement pontés et dotés de cockpit(s) rapidement autovideur(s) conforme(s) à l'ISO 11812 peuvent alternativement, être évalués en utilisant l'ISO 12217‑1 ou l'ISO 12217‑2 (respectivement pour les bateaux à propulsion non vélique et les voiliers), dans quel cas il pourrait en résulter l'attribution d'une catégorie de conception supérieure.
Pour ce qui concerne les multicoques habitables, la présente partie de l'ISO 12217 comprend l'évaluation de la susceptibilité à l'inversion, la définition d'un moyen d'échappée viable et les exigences de flottabilité à l'état inversé.
L'ISO 12217-3:2015 exclut:
les bateaux pneumatiques et semi-rigides couverts par l'ISO 6185, excepté lorsque l'ISO 6185 fait référence à des paragraphes spécifiques de l'ISO 12217;
les véhicules nautiques à moteur (motos aquatiques), couverts par l'ISO 13590 et engins à moteur similaires;
les jouets aquatiques;
les canoës et kayaks;
les gondoles et pédalos;
les planches à voiles;
les planches de surf, y compris les planches motorisées;
les hydrofoils et les bateaux stabilisés par des plans porteurs lorsqu'ils ne sont pas en mode à déplacement.
les submersibles.
L'ISO 12217-3:2015 n'inclut ni n'évalue les effets sur la stabilité provenant du remorquage, de la pêche, du dragage ou d'opérations de levage, qu'il est nécessaire de considérer séparément.

Mala plovila - Stabilnost in ocena vzgona ter kategorizacija - 3. del: Čolni s trupom, krajšim od 6 m (ISO 12217-3:2015)

Standard ISO 12217-3:2015 določa metode za oceno stabilnosti in vzgona brezhibnih (nepoškodovanih) čolnov. Zajete so tudi karakteristike plovnosti plovil, ki so izpostavljena zalivanju.
Ocena stabilnosti in vzgona z uporabo standarda ISO 12217-3:2015 bo omogočila, da bo čoln vključen v konstrukcijsko kategorijo (C ali D), ki je ustrezna glede na konstrukcijo in največjo obremenitev.
Standard ISO 12217-3:2015 se uporablja za čolne s trupom, krajšim od 6 m, ki jih poganja človek ali stroj, z izjemo večtrupnih bivalnih jadrnic. Čolne s trupom, krajšim od 6 m, ki imajo neprekinjen krov in krmarjeve prostore s hitrim odvodnjavanjem v skladu s standardom ISO 11812, se lahko oceni tudi z uporabo standarda ISO 12217 1 ali ISO 12217 2 (za čolne in jadrnice), pri čemer se jim lahko dodeli višje konstrukcijske kategorije.
V povezavi z večtrupnimi bivalnimi plovili standard ISO 12217-3:2015 vključuje oceno izpostavljenosti prevrnitvi, navedbo ustreznih možnosti umika in zahteve za plovnost v prevrnjenem stanju.
ISO 12217-3:2015 ne velja za:
napihljive čolne in napihljive čolne, ki imajo v spodnjem delu trupa togo enoto, ki jih obravnava standard ISO 6185, razen pri sklicih iz standarda ISO 6185 na določene točke standarda ISO 12217;
osebna plovila, ki jih obravnava standard ISO 13590, in druga podobna plovila na pogon;
vodne igrače;
kanuje in kajake;
gondole in čolne na pedala;
jadralne deske;
deske, vključno z deskami na motorni pogon;
hidrogliserje, čolne s stabilizacijskimi flapi in plovila na zračno blazino, kadar ne delujejo v načinu izpodriva; ter
plovila, ki lahko plujejo pod vodno gladino.
OPOMBA Pri načinu izpodriva na čoln delujejo le hidrostatične sile.
ISO 12217-3:2015 ne vključuje ali ne vrednoti vpliva na stabilnost pri vlečenju, ribolovu, črpanju ali dvigovanju, pri katerih je treba ustreznost stabilnosti obravnavati posamezno.

General Information

• Status: Published
• Public Enquiry End Date: 21-Jun-2017
• Publication Date: 17-Aug-2017
• ICS: 47.080 - Small craft
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 17-Aug-2017
• Due Date: 22-Oct-2017
• Completion Date: 18-Aug-2017
• Directive: 2013/53/EU - Directive 2013/53/EU of the European Parliament and of the Council of 20 November 2013 on recreational craft and personal watercraft and repealing Directive 94/25/EC
• Mandate: M/542 - [C(2015)8736] Standardisation Request to the European Committee for Standardisation and the European Committee for Electro-technical Standardisation as regards recreational craft and personal watercraft in support of Directive 2013/53/EU of the European Parliament and of the Council of 20 November 2013 on recreational craft and personal watercraft and repealing Directive 94/25/EC.
• Ref Project: EN ISO 12217-3:2017 - Small craft - Stability and buoyancy assessment and categorization - Part 3: Boats of hull length less than 6 m (ISO 12217-3:2015)

Relations

• Revises: oSIST prEN ISO 12217-3:2021 - Small craft - Stability and buoyancy assessment and categorization - Part 3: Boats of hull length less than 6 m (ISO/FDIS 12217-3:2020)
• Effective Date: 18-Jan-2023
• Revised: SIST EN ISO 12217-3:2016 - Small craft - Stability and buoyancy assessment and categorization - Part 3: Boats of hull length less than 6 m (ISO 12217-3:2015)
• Effective Date: 15-Jun-2016
• Revises: oSIST prEN ISO 12217-3:2021 - Small craft - Stability and buoyancy assessment and categorization - Part 3: Boats of hull length less than 6 m (ISO/FDIS 12217-3:2020)
• Effective Date: 19-Jan-2023
• Replaces: SIST EN ISO 12217-3:2016 - Small craft - Stability and buoyancy assessment and categorization - Part 3: Boats of hull length less than 6 m (ISO 12217-3:2015)
• Effective Date: 16-Aug-2017
• Revised: oSIST prEN ISO 12217-3:2021 - Small craft - Stability and buoyancy assessment and categorization - Part 3: Boats of hull length less than 6 m (ISO/FDIS 12217-3:2020)
• Effective Date: 21-Aug-2019
• Replaces: SIST EN ISO 12217-3:2016 - Small craft - Stability and buoyancy assessment and categorization - Part 3: Boats of hull length less than 6 m (ISO 12217-3:2015)
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 12217-3:2017
01-oktober-2017
1DGRPHãþD
SIST EN ISO 12217-3:2016
0DODSORYLOD6WDELOQRVWLQRFHQDY]JRQDWHUNDWHJRUL]DFLMDGHOýROQLVWUXSRP
NUDMãLPRGP,62
Small craft - Stability and buoyancy assessment and categorization - Part 3: Boats of hull
length less than 6 m (ISO 12217-3:2015)
Kleine Wasserfahrzeuge - Stabilitäts- und Auftriebsbewertung und Kategorisierung - Teil
3: Boote unter 6 m Rumpflänge (ISO 12217-3:2015)
Petits navires - Évaluation et catégorisation de la stabilité et de la flottabilité - Partie 3:
Bateaux d'une longueur de coque inférieure à 6 m (ISO 12217-3:2015)
Ta slovenski standard je istoveten z: EN ISO 12217-3:2017
ICS:
47.080 ýROQL Small craft
SIST EN ISO 12217-3:2017 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 12217-3:2017

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SIST EN ISO 12217-3:2017


EN ISO 12217-3
EUROPEAN STANDARD

NORME EUROPÉENNE

August 2017
EUROPÄISCHE NORM
ICS 47.080 Supersedes EN ISO 12217-3:2015
English Version

Small craft - Stability and buoyancy assessment and
categorization - Part 3: Boats of hull length less than 6 m
(ISO 12217-3:2015)
Petits navires - Évaluation et catégorisation de la Kleine Wasserfahrzeuge - Stabilitäts- und
stabilité et de la flottabilité - Partie 3: Bateaux d'une Auftriebsbewertung und Kategorisierung - Teil 3:
longueur de coque inférieure à 6 m (ISO 12217- Boote unter 6 m Rumpflänge (ISO 12217-3:2015)
3:2015)
This European Standard was approved by CEN on 23 July 2017.

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: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12217-3:2017 E
worldwide for CEN national Members.

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SIST EN ISO 12217-3:2017
EN ISO 12217-3:2017 (E)
Contents Page
European foreword . 3
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2013/53/EU . 4

2

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SIST EN ISO 12217-3:2017
EN ISO 12217-3:2017 (E)
European foreword
The text of ISO 12217-3:2015 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 12217-3:2017.
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 February 2018, and conflicting national standards
shall be withdrawn at the latest by February 2018.
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 12217-3:2015.
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(s).
For relationship with EU Directive(s), 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 12217-3:2015 has been approved by CEN as EN ISO 12217-3:2017 without any
modification.
3

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SIST EN ISO 12217-3:2017
EN ISO 12217-3:2017 (E)
Annex ZA
(informative)

Relationship between this European Standard and the essential
requirements of Directive 2013/53/EU
This European Standard has been prepared under a Commission’s standardization request M/075 to
provide one voluntary means of conforming to essential requirements of Directive 2013/53/EU of the
European Parliament and of the Council of 20 November 2013 on recreational craft and personal
watercraft and repealing Directive 94/25/EC (OJ L 354, 28.12.2013, p. 90–131).
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.A of Directive
2013/53/EU
Clause(s)/sub-clause(s) of Essential Requirements of Remarks/Notes
this EN Directive 2013/53/EU
Clause 5; 6; 9; Annex G I.A.1 - Watercraft Design EN ISO 12217-3 is applicable to
Categories boats of hull length less than 6
m, whether propelled by human
or mechanical power, except
habitable sailing multihulls.
The evaluation of stability and
buoyancy properties using EN
ISO 12217-3 will enable boats of
hull length less than 6 m to be
assigned to a design category (C
or D) appropriate to its design
and maximum load.
Design categories A, B, C and D
defined in this standard
correspond to design categories
A, B, C and D of Directive
2013/53/EU.
Clause 5, 6, 7 I.A.3.2 - Stability and Freeboard
Annexes A, B, C, D
Clause 6.2, 6.7, 6.8, 6.9, 7.4, I.A.3.3 - Buoyancy and flotation EN ISO 12217-3 includes the
7.5, 7.8 flotation characteristics of craft
susceptible to swamping.
Annexes C, D, E
Habitable non-sailing multihulls
susceptible to inversion shall
also comply with the inverted
buoyancy requirements of
ISO 12217-2:2015, clause 7.12.
4

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SIST EN ISO 12217-3:2017
EN ISO 12217-3:2017 (E)
Clause 6.3, 7.2 I.A.3.5 - Flooding In respect of watertight
integrity and downflooding
Annexes A, B,
openings including ventilation
openings and fittings.
Clause 5 I.A.3.6 - Maximum
recommended load
Clause 6.2 I.A.3.8 - Escape Habitable non-sailing multihulls
susceptible to inversion shall
also comply with the escape
requirements of
ISO 12217-2:2015, clause 7.13.
This standard does not include
means of escape in the event of
fire.
Annex F I.A.2.5 - Owner’s manual
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.

5

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SIST EN ISO 12217-3:2017

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SIST EN ISO 12217-3:2017
INTERNATIONAL ISO
STANDARD 12217-3
Third edition
2015-10-15
Small craft — Stability and buoyancy
assessment and categorization —
Part 3:
Boats of hull length less than 6 m
Petits navires — Évaluation et catégorisation de la stabilité et de la
flottabilité —
Partie 3: Bateaux d’une longueur de coque inférieure à 6 m
Reference number
ISO 12217-3:2015(E)
©
ISO 2015

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SIST EN ISO 12217-3:2017
ISO 12217-3:2015(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, 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.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2015 – All rights reserved

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SIST EN ISO 12217-3:2017
ISO 12217-3:2015(E)

Contents Page
Foreword .v
Introduction .vii
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
3.1 Primary . 2
3.2 Downflooding . 4
3.3 Condition and mass . 5
3.4 Other definitions . 7
4 Symbols . 9
5 Procedure.10
5.1 Maximum load .10
5.2 Sailing or non-sailing .10
5.3 Tests to be applied .11
5.3.1 General.11
5.4 Alternatives .11
5.5 Variation in input parameters . .11
6 Tests to be applied to non-sailing boats .12
6.1 General .12
6.2 Habitable non-sailing multihull boats .13
6.3 Downflooding .13
6.3.1 Requirements for downflooding openings .13
6.3.2 Downflooding height with maximum load .15
6.3.3 Downflooding height — outboard boats when starting .18
6.4 Recess size .18
6.4.1 Application .18
6.4.2 Simplified methods .19
6.4.3 Direct calculation method .20
6.5 Offset-load test .20
6.5.1 General.20
6.5.2 Simplified procedure for offset-load test .22
6.5.3 Full procedure for offset load-test .24
6.5.4 Procedure for gunwale load test .26
6.6 Heel due to wind action .27
6.6.1 General.27
6.6.2 Calculation .27
6.6.3 Requirement .27
6.7 Level flotation test .27
6.8 Basic flotation test.28
6.9 Capsize-recovery test .28
6.10 Detection and removal of water .29
7 Tests to be applied to sailing boats.29
7.1 General .29
7.2 Downflooding .30
7.3 Recess size .31
7.4 Flotation tests .31
7.4.1 Level flotation test .31
7.4.2 Basic flotation test .31
7.5 Capsize-recovery test .31
7.6 Knockdown recovery test .32
7.7 Wind stiffness test .33
7.7.1 General.33
© ISO 2015 – All rights reserved iii

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SIST EN ISO 12217-3:2017
ISO 12217-3:2015(E)

7.7.2 Practical test .33
7.7.3 Compliance by calculation .34
7.7.4 Requirements .35
7.8 Inverted buoyancy .36
8 Safety signs .37
9 Application .37
9.1 Deciding the design category .37
9.2 Meaning of the design categories.37
Annex A (normative) Full method for required downflooding height .38
Annex B (normative) Methods for calculating downflooding angle .41
Annex C (normative) Method for flotation tests .43
Annex D (normative) Flotation material and elements .48
Annex E (normative) Calculation method for basic flotation requirement .50
Annex F (normative) Information for owner’s manual .52
Annex G (informative) Summary of requirements.57
Annex H (informative) Worksheets .59
Annex I (informative) Illustration of recess retention level .76
Bibliography .77
iv © ISO 2015 – All rights reserved

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SIST EN ISO 12217-3:2017
ISO 12217-3:2015(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/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 on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information.
The committee responsible for this document is ISO/TC 188, Small craft.
This third edition cancels and replaces the second edition (ISO 12217-3:2013), of which it constitutes a
minor revision. It incorporates the following modifications:
— Introduction and Clause 9.2: the reference to the European Directive has been updated (2013/53/EU);
— Clause 1, subclauses 6.2, 6.3.1.5 d) 3) and F.2 g): vulnerable has been replaced with susceptible.
— Clause 3: definitions 3.1.1, 3.3.5 and 3.4.9 have been amended;
— Subclause 6.3.2.2 c): option 5 has been included;
— Subclauses 6.4.2.3 and 6.4.2.4: the formulae coefficients have been corrected;
— Subclauses 6.5.2.5 and 6.5.3.3 e) 2) and Table G.1 have been slightly amended to remove
inconsistencies.
— Subclause 6.6.1 and Table G.1: the formulae have been harmonised with ISO 12217-1;
— Subclause 7.5.1 b) has been aligned with the text in ISO 12217-2.
— Subclause 9.2: the text has been amended;
— Annex H: worksheets 2, 4, 6, 8 and 15 have been corrected to align with corrections listed above;
— Annex I has been added;
— Bibliography: reference to ISO 7010 has been added;
— Editorial and cross-referencing corrections have been made to definitions 3.2.2 and 3.2.3 and to
subclauses, 6.4.1, 6.4.2.1, 6.4.2.2 and 6.4.2.3 , to Table G.2, and to Annex H, worksheet 6.
ISO 12217 consists of the following parts, under the general title Small craft — Stability and buoyancy
assessment and categorization:
© ISO 2015 – All rights reserved v

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SIST EN ISO 12217-3:2017
ISO 12217-3:2015(E)

— Part 1: Non-sailing boats of hull length greater than or equal to 6 m
— Part 2: Sailing boats of hull length greater than or equal to 6 m
— Part 3: Boats of hull length less than 6 m
vi © ISO 2015 – All rights reserved

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SIST EN ISO 12217-3:2017
ISO 12217-3:2015(E)

Introduction
This part of ISO 12217 enables the determination of the limiting environmental conditions to be
determined for which an individual boat has been designed.
It enables the boat to be assigned to a design category appropriate to its design and maximum load.
The design categories used align with those in the Recreational Craft Directive of the European Union,
EU Directive 2013/53/EU.
Annex H provides worksheets to assist in the systematic assessment of a boat according to this part
of ISO 12217.
© ISO 2015 – All rights reserved vii

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SIST EN ISO 12217-3:2017

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SIST EN ISO 12217-3:2017
INTERNATIONAL STANDARD ISO 12217-3:2015(E)
Small craft — Stability and buoyancy assessment and
categorization —
Part 3:
Boats of hull length less than 6 m
CAUTION — Compliance with this part of ISO 12217 does not guarantee total safety or total
freedom of risk from capsize or sinking.
IMPORTANT — The electronic file of this document contains colours which are considered to be
useful for the correct understanding of the document. Users should therefore consider printing
this document using a colour printer.
1 Scope
This part of ISO 12217 specifies methods for evaluating the stability and buoyancy of intact (i.e. undamaged)
boats. The flotation characteristics of craft susceptible to swamping are also encompassed.
The evaluation of stability and buoyancy properties using this part of ISO 12217 will enable the boat to
be assigned to a design category (C or D) appropriate to its design and maximum load.
This part of ISO 12217 is applicable to boats of hull length less than 6 m, whether propelled by human
or mechanical power, except habitable sailing multihulls. Boats of hull length less than 6 m which are
fitted with a full deck and quick-draining cockpit(s) complying with ISO 11812 may alternatively be
assessed using ISO 12217-1 or ISO 12217-2 (for non-sailing and sailing boats, respectively), in which
case higher design categories may be assigned.
In relation to habitable multihulls, this part of ISO 12217 includes assessment of susceptibility to
inversion, definition of viable means of escape and requirements for inverted flotation.
This part of ISO 12217 excludes:
— inflatable and rigid-inflatable boats covered by ISO 6185, except for references made in ISO 6185 to
specific clauses of ISO 12217;
— personal watercraft covered by ISO 13590 and other similar powered craft;
— aquatic toys;
— canoes a
...