ISO INTERNATIONAL STANDARD 12217-1 Fourth edition 2022-12 Small craft - Stability and buoyancy assessment and categorization - Part 1: Non-sailing boats of hull length greater than or equal to 6 m Petits navires Evaluation et catégorisation de la stabilité et de la flottabilité- Partie 1: Bateaux a propulsion non velique d'une longueur de coque supérieure ou égale a 6 m Reference number ISO 12217-1:2022(E) rso @IS02022 IS0 12217-1:2022(E) COPYRIGHT PROTECTED DOCUMENT @ IS0 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 or ISo's member body in the country of the requester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email: [email protected] Website: www.iso.org Published in Switzerland i @ IS0 2022 - All rights reserved IS0 12217-1:2022(E) wx:ivd-by Contents Page Foreword ..V Introduction. .. vi 1 Scope. 2 Normative references 3 Terms and definitions ..2 3.1 Primary. .2 3.2 Downflooding. 3.3 Dimensions, areas and angles. .5 3.4 Condition, mass and volume. 3.5 Other terms and definitions. 9 4 Symbols. ..12 5 Procedure. ..13 5.1 Maximum load ..13 5.2 Sailing or non-sailing .13 5.3 Tests and calculations to be applied. ..13 5.4 Variation in input parameters. .. 14 6 Tests, calculations and requirements ..14 6.1 Downflooding 14 6.1.1 Downflooding openings. ..15 6.1.2 Downflooding height. 17 6.1.3 Downflooding angle 19 6.2 Offset-load test.. 20 6.2.1 Objective 20 6.2.2 Test. 20 6.2.3 Requirements. 20 6.3 Resistance to waves and wind. 21 6.3.1 General 21 6.3.2 Rolling in beam waves and wind 21 6.3.3 Resistance to waves. 22 6.4 Heel due to wind action. 23 6.4.1 General 23 6.4.2 Calculation. 23 6.4.3 Requirement. 23 6.5 Recess size. 23 6.5.1 Application. 23 6.5.2 Simplified methods. 24 6.5.3 Direct calculation method 25 6.5.4 Design category C boats using option 6 26 6.6 Habitable multihull boats 26 6.7 Motor sailers. 27 6.7.1 General 27 6.7.2 Requirement 27 6.8 Flotation requirements 27 6.9 Detection and removal of water ..28 7 Application .28 7.1 Deciding the design category ..28 7.2 Meaning of the design categories ..28 Annex A (normative) Full method for required downflooding height .30 Annex B (normative) Method for offset-load test. ..32 Annex C (normative) Methods for calculating downflooding angle .40 IS0 2022 - All rights reserved iii IS0 12217-1:2022(E) Annex D (normative) Method for measuring freeboard margin 42 Annex E (normative) Determining the curve of righting moments 44 Annex F (normative) Method for level flotation test .47 Annex G (normative) Flotation material and elements .52 Annex H (normative) Information for the craft's owner's manual .54 Annex I (informative) Summary of requirements .56 Annex J (informative) Worksheets .58 Annex K (informative) Illustration of recess retention level ..75 Bibliography .76 iv @ IS0 2022 - All rights reserved IS0 12217-1:2022(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 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 describedintheIsO/EcDirectives,Part1.Inparticular,thedifferentapprovalcriterianeededforthe different types of Iso documents should be noted. This document was draft