National foreword

This British Standard is the UK implementation of EN ISO 12217‑1:2017. It is identical to ISO 12217‑1:2015. It supersedes BS EN ISO 12217‑1:2015, which is withdrawn.

The UK participation in its preparation was entrusted to Technical Committee GME/33, Small craft.

A list of organizations represented on this committee can be obtained on request to its secretary.

This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.

Compliance with a British Standard cannot confer immunity from legal obligations.

This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 February 2018.

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 http://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 http://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 12217‑1:2013), of which it constitutes a minor revision. It incorporates the following modifications:

Introduction: the reference to the European Directive has been updated (2013/53/EU);
Clause 1, 6.1.1.6 letter d) 3), 6.6 and Worksheet 9 of Annex J: “vulnerable” has been replaced with “susceptible”;
Clause 2: ISO 6185‑4:2011 has been added;
Clause 3: entries 3.1.1, 3.4.3, 3.4.5, 3.4.6 and 3.5.9 have been amended;
SubClause 6.1.2.2, letter c): option 6 has been included;
SubClauses 6.3.2 and 6.4.1: the formulae have been harmonised;
SubClauses 6.5.2.3 and 6.5.2.4: formulae coefficients have been corrected;
SubClause 7.2: the text and Table 6 have been amended;
Clause F.4: Table F.5 has been amended, subclause F.4.4 has been added;
Annex J: worksheets 1, 2, 3, 6, 7, 8, 9, 10 and 12 have been corrected to align with corrections listed above;
Annex K has been added;
Bibliography: reference to ISO 7010 has been added;
Editorial and cross-referencing corrections have been made to Table 2, subclauses 6.5.1, 6.5.2.2 and 6.5.2.3, and worksheets 4 and 8 of Annex J.

ISO 12217 consists of the following parts, under the general title Small craft — Stability and buoyancy assessment and categorization:

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

Introduction

This part of ISO 12217 enables the determination of the limiting environmental conditions 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.

The design category given in respect of stability and buoyancy is that for which the boat satisfies all the requirements according to 5.3, as summarized in Annex I.

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 foreword

The text of ISO 12217‑1:2015 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 12217‑1:2017.

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 March 2018, and conflicting national standards shall be withdrawn at the latest by March 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 12217‑1:2015.

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 12217‑1:2015 has been approved by CEN as EN ISO 12217‑1:2017 without any modification.

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 boats 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 (A, B, C or D) appropriate to its design and maximum total load.

This part of ISO 12217 is principally applicable to boats propelled by human or mechanical power of 6 m up to 24 m hull length. However, it can also be applied to boats of under 6 m if they do not attain the desired design category specified in ISO 12217‑3 and they are decked and have quick-draining recesses which comply with ISO 11812.

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;
gondolas and pedalos;
sailing surfboards;
surfboards, including powered surfboards;
hydrofoils and hovercraft when not operating in the displacement mode; and
submersibles.
NOTE Displacement mode means that the boat is only supported by hydrostatic forces.

It does not include or evaluate the effects on stability of towing, fishing, dredging or lifting operations, which need to be separately considered if appropriate.

2 Normative references

3 Terms and definitions

3.1 Primary

3.2 Downflooding

3.3 Dimensions, areas and angles

3.4 Condition, mass and volume

3.5 Other terms and definitions

4 Symbols

5 Procedure

5.1 Maximum load

5.2 Sailing or non-sailing

5.3 Tests and calculations to be applied

5.4 Variation in input parameters

6 Tests, calculations and requirements

6.1 Downflooding

6.2 Offset-load test

6.3 Resistance to waves and wind

6.4 Heel due to wind action

6.5 Recess size

6.6 Habitable multihull boats

6.7 Motor sailers

6.8 Flotation requirements

6.9 Detection and removal of water

7 Application

7.1 Deciding the design category

7.2 Meaning of the design categories

Bibliography

BS EN ISO 12217-1:2017

Small craft. Stability and buoyancy assessment and categorization - Non-sailing boats of hull length greater than or equal to 6 m

Published:

28 Feb 2018

Withdrawn:

31 Oct 2025