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)

This document 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 document will enable the boat to be assigned to a design category (C or D) appropriate to its design and maximum load.
This document 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 can alternatively be assessed using ISO 12217‑1 or ISO 12217‑2 (for non-sailing and sailing boats, respectively), in which case higher design categories can be assigned.
In relation to habitable multihulls, this document includes assessment of susceptibility to inversion, definition of viable means of escape and requirements for inverted flotation.
This document excludes:
—    inflatable and rigid-inflatable boats covered by the ISO 6185 series, except for references made in the ISO 6185 series to specific clauses of the ISO 12217 series;
—    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.
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.

Kleine Wasserfahrzeuge - Festlegung und Kategorisierung von Stabilität und Auftrieb - Teil 3: Boote unter 6 m Rumpflänge (ISO/FDIS 12217-3:2020)

Dieses Dokument legt Verfahren für die Beurteilung von Stabilität und Auftrieb von intakten (d. h. unbeschädigten) Booten fest. Ebenfalls sind darin die Auftriebseigenschaften solcher Boote erfasst, die anfällig gegen Vollschlagen sind.
Die Beurteilung der Stabilitäts  und Auftriebseigenschaften nach diesem Dokument erlaubt es, dem Boot eine Entwurfskategorie (C oder D) zuzuordnen, die seiner Auslegung und seiner maximalen Beladung entspricht.
Dieses Dokument ist auf Boote mit einer Rumpflänge unter 6 m anwendbar, die durch Muskelkraft oder Motor angetrieben werden, mit Ausnahme von bewohnbaren Mehrrumpfsegelbooten. Boote mit weniger als 6 m Rumpflänge, die voll gedeckt sind und schnell-lenzende Plicht(en) nach ISO 11812:2020 besitzen, dürfen alternativ auch nach ISO 12217 1 oder ISO 12217 2 (für Nicht-Segelboote bzw. Segelboote) bewertet werden, so dass ihnen gegebenenfalls eine höhere Entwurfskategorie zugewiesen werden darf.
In Bezug auf bewohnbare Mehrrumpfboote beinhaltet dieses Dokument die Bewertung der Anfälligkeit gegen Kenterung, die Definition funktionsfähiger Fluchtmöglichkeiten und Anforderungen an die Schwimm¬fähigkeit im gekenterten Zustand (kieloben).
Ausgeschlossen von der Anwendung dieses Dokuments sind:
—   Schlauchboote und Schlauchboote mit festem Rumpf (RIB) nach ISO 6185 mit Ausnahme der Verweisungen, die sich in der ISO 6185 auf bestimmte Abschnitte in ISO 12217 beziehen;
—   Wassermotorräder nach ISO 13590 und andere, ähnlich angetriebene Wasserfahrzeuge;
—   Wasserspielzeuge;
—   Kanus und Kajaks;
—   Gondeln und Tretboote;
—   Segel-Surfbretter;
—   Surfbretter, einschließlich motorisierte Surfbretter;
—   Tragflügelboote, motor  und segelbetrieben, und Luftkissenfahrzeuge, sofern sie nicht im Verdrängermodus betrieben werden;
—   Tauchfahrzeuge.
ANMERKUNG   Verdrängermodus bedeutet, dass das Boot nur durch hydrostatische Kräfte getragen wird.
Dieses Dokument enthält keine Angaben oder Beurteilungen zu den die Stabilität betreffenden Auswirkungen von Schleppen, Fischen, Baggern oder Kranarbeiten; diese müssen, falls erforderlich, gesondert berücksichtigt werden

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/FDIS 12217-3:2020)

Le présent document 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 prises en compte.
L'évaluation des propriétés de stabilité et de flottabilité effectuée en utilisant le présent document permettra d'attribuer à un bateau une catégorie de conception (C ou D) appropriée à sa conception et à sa charge maximale.
Le présent document est applicable aux bateaux d’une longueur de coque inférieure à 6 m, qu’ils soient 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, de manière alternative, 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 lui être attribué 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.
Le présent document exclut:
—    les bateaux pneumatiques et semi-rigides couverts par la série ISO 6185, excepté lorsque la série ISO 6185 fait référence à des paragraphes spécifiques de la série ISO 12217;
—    les véhicules nautiques à moteur (motos aquatiques), couverts par l'ISO 13590 et engins à moteur similaires;
—    les jouets aquatiques;
—    les canoés et kayaks;
—    les gondoles et pédalos;
—    les planches à voiles;
—    les planches de surf, y compris les planches de surf motorisées;
—    les hydrofoils, les bateaux stabilisés par foils et les bateaux à coussins d'air (hovercraft) lorsqu'ils ne fonctionnent pas en mode à déplacement; et
—    les submersibles.
NOTE            Le mode à déplacement signifie que le bateau est uniquement supporté par des forces hydrostatiques.
Il n'inclut ni n'évalue les effets sur la stabilité provenant du remorquage, de la pêche, du dragage ou d'opérations de levage, qui doivent être, si nécessaire, considérés séparément.

Mala plovila - Stabilnost in ocena vzgona ter kategorizacija - 3. del: Čolni s trupom, krajšim od 6 m (ISO/FDIS 12217-3:2020)

General Information

• Status: Not Published
• Public Enquiry End Date: 31-Jan-2021
• ICS: 47.080 - Small craft
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 26-Nov-2020
• Due Date: 15-Apr-2021
• Completion Date: 01-Feb-2021
• 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: prEN ISO 12217-3 - Small craft - Stability and buoyancy assessment and categorization - Part 3: Boats of hull length less than 6 m (ISO/DIS 12217-3:2020)

Relations

• Revised: 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)
• Effective Date: 21-Aug-2019
• Revised: 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)
• Effective Date: 18-Jan-2023
• Revised: 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)
• Effective Date: 19-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN ISO 12217-3:2021
01-januar-2021
Mala plovila - Stabilnost in ocena vzgona ter kategorizacija - 3. del: Čolni s trupom,
krajšim od 6 m (ISO/FDIS 12217-3:2020)
Small craft - Stability and buoyancy assessment and categorization - Part 3: Boats of hull
length less than 6 m (ISO/FDIS 12217-3:2020)
Kleine Wasserfahrzeuge - Festlegung und Kategorisierung von Stabilität und Auftrieb -
Teil 3: Boote unter 6 m Rumpflänge (ISO/FDIS 12217-3:2020)
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/FDIS 12217-3:2020)
Ta slovenski standard je istoveten z: prEN ISO 12217-3
ICS:
47.080 Čolni Small craft
oSIST prEN ISO 12217-3:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 12217-3:2021

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oSIST prEN ISO 12217-3:2021
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 12217-3
ISO/TC 188
Small craft — Stability and buoyancy
Secretariat: SIS
assessment and categorization —
Voting begins on:
2020-11-20
Part 3:
Voting terminates on:
Boats of hull length less than 6 m
2021-02-12
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/CEN PARALLEL PROCESSING
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 12217-3:2020(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
©
NATIONAL REGULATIONS. ISO 2020

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oSIST prEN ISO 12217-3:2021
ISO/FDIS 12217-3:2020(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
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 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved

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oSIST prEN ISO 12217-3:2021
ISO/FDIS 12217-3:2020(E)

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
3.1 Primary . 3
3.2 Downflooding . 5
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 .17
6.4 Recess size .17
6.4.1 Application .17
6.4.2 Simplified methods .18
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 .23
6.5.4 Procedure for gunwale load test .25
6.6 Heel due to wind action .26
6.6.1 General.26
6.6.2 Calculation .26
6.6.3 Requirement .27
6.7 Level flotation test .27
6.8 Basic flotation test.27
6.9 Capsize-recovery test .27
6.10 Detection and removal of water .28
7 Tests to be applied to sailing boats.29
7.1 General .29
7.2 Downflooding .30
7.3 Recess size .30
7.4 Flotation tests .30
7.4.1 Level flotation test .30
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
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7.7.2 Practical test .33
7.7.3 Compliance by calculation .35
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 .39
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.56
Annex H (informative) Worksheets .58
Annex I (informative) Illustration of recess retention level .75
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2013/53/EU aimed to be covered .76
Bibliography .78
iv © ISO 2020 – All rights reserved

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oSIST prEN ISO 12217-3:2021
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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 of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 188, Small craft, in collaboration with
the European Committee for Standardization (CEN) Technical Committee CEN/TC 464, Small craft, in
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This fourth edition of ISO 12217-3 cancels and replaces the third edition (ISO 12217-3:2015), of which it
constitutes a minor revision. The changes compared to the previous edition are as follows:
— all normative references have been updated and dated;
— the “allowance for the maximum mass of optional equipment and fittings not included in the
manufacturer’s basic outfit” has been moved from 3.3.3 (maximum load) to 3.3.4 (maximum load
condition);
— in Annex H, the calculation worksheet No. 1 has been corrected to reflect the above;
— minor editorial changes throughout the document.
A list of all parts in the ISO 12217 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
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oSIST prEN ISO 12217-3:2021
ISO/FDIS 12217-3:2020(E)

Introduction
This document 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
document.
vi © ISO 2020 – All rights reserved

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oSIST prEN ISO 12217-3:2021
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 12217-3:2020(E)
Small craft — Stability and buoyancy assessment and
categorization —
Part 3:
Boats of hull length less than 6 m
CAUTION — Compliance with this document 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 document 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 document will enable the boat to be
assigned to a design category (C or D) appropriate to its design and maximum load.
This document 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 11812:2020 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 document includes assessment of susceptibility to inversion,
definition of viable means of escape and requirements for inverted flotation.
This document 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.
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.
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oSIST prEN ISO 12217-3:2021
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2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 2896:2001, Rigid cellular plastics — Determination of water absorption
ISO 3864-1:2011, Graphical symbols — Safety colours and safety signs — Part 1: Design principles for
safety signs and safety markings
ISO 8666:2020, Small craft — Principal data
1)
ISO 9093:— , Small craft — Seacocks and through-hull fittings
ISO 10240:2019, Small craft — Owner's manual
ISO 11812:2020, Small craft — Watertight or quick-draining recesses and cockpits
ISO 12216:2020, Small craft — Windows, portlights, hatches, deadlights and doors — Strength and
watertightness requirements
2)
ISO 12217-1:— , Small craft — Stability and buoyancy assessment and categorization — Part 1: Non-
sailing boats of hull length greater than or equal to 6 m
3)
ISO 12217-2:— , Small craft — Stability and buoyancy assessment and categorization — Part 2: Sailing
boats of hull length greater than or equal to 6 m
4)
ISO 14946:— , Small craft — Maximum load capacity
ISO 15083:2020, Small craft — Bilge-pumping systems
ISO 15085:2003+Amd 2:2017, Small craft — Man-overboard prevention and recovery
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
NOTE The meanings of certain symbols used in the definitions are given in Clause 4.
1) Under preparation, revision of ISO 9093-1:1994 and ISO 9093-2:2002. Stage at the time of publication of this
FDIS: ISO/FDIS 9093:2020. At publication of ISO 12217-3, the publication date of ISO 9093 will be updated and this
footnote removed.
2) Under preparation, revision of ISO 12217-1:2015. Stage at the time of publication of this FDIS:
ISO/FDIS 12217-1:2020. At publication of ISO 12217-3, the publication date of ISO 12217-1 will be updated and
this footnote removed.
3) Under preparation, revision of ISO 12217-2:2015. Stage at the time of publication of this FDIS:
ISO/FDIS 12217-2:2020. At publication of ISO 12217-3, the publication date of ISO 12217-2 will be updated and
this footnote removed.
4) Under preparation, revision of ISO 14946:2001. Stage at the time of publication of this FDIS:
ISO/FDIS 14946.2:2020. At publication of ISO 12217-3, the publication date of ISO 14946 will be updated and this
footnote removed.
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oSIST prEN ISO 12217-3:2021
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3.1 Primary
3.1.1
design category
description of the sea and wind conditions for which a boat is assessed to be suitable
Note 1 to entry: See also 9.2.
3.1.2
recess
volume open to the air that might retain water within the range of loading conditions and
corresponding trims
EXAMPLE Cockpits, wells, open volumes or areas bounded by bulwarks or coamings.
Note 1 to entry: Cabins, shelters or lockers provided with closures according to the requirements of ISO 12216
are not recesses.
Note 2 to entry: Cockpits that are open aft to the sea are considered to be recesses. Flush decks without bulwarks
or coamings are not recesses.
3.1.3
quick-draining recess
recess fulfilling all the requirements of ISO 11812 for “quick-draining cockpits and recesses”
Note 1 to entry: ISO 11812 contains requirements with which most sailing dinghies cannot comply.
Note 2 to entry: According to its characteristics, a cockpit may be considered to be quick-draining for one design
category, but not for a higher category.
3.1.4
watertight recess
recess fulfilling all the requirements of ISO 11812 for “watertight cockpits and recesses”
Note 1 to entry: This term only implies requirements in respect of watertightness and sill heights, but not those
for drainage.
3.1.5
fully enclosed boat
boat in which the horizontal projection of the sheerline area comprises any combination of:
— watertight deck and superstructure, and/or
— quick-draining recesses complying with ISO 11812, and/or
— watertight recesses complying with ISO 11812 with a combined volume of less than (L B F )/40,
H H M
and
all closing appliances having their degree of watertightness in accordance with ISO 12216
Note 1 to entry: The size of recesses permitted for some boats of design category C is restricted by the
requirements of 6.4.
3.1.6
partially protected boat
boat which does not fulfil the definition of a fully-enclosed boat and in which the plan projected area of
decking, cabins, shelters, outboard engine wells or other rigid covers which are watertight from above
according to ISO 12216 and which immediately shed water directly overboard (i.e. not via drains) and
— comprises at least one-third of the plan projected area of the sheerline, and
— includes all the area within L /3 from the bow, and
H
— includes at least 100 mm inboard from the sheerline,
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oSIST prEN ISO 12217-3:2021
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except that the area of any watertight recesses with a total volume of less than (L B F )/40 may shed
H H M
water via drains
Note 1 to entry: This is illustrated in Figure 1.
Note 2 to entry: Outboard engine wells are considered to provide a covering suitable for this purpose.
Key
1 recess area open from above (less than two-thirds of the total sheerline area)
2 sheerline
3 open shelter or enclosed cabin
Figure 1 — Partially protected boat
3.1.7
habitable boat
boat having a fully enclosed cabin with rigid roof fitted with one or more bunks, benches, pipecots,
hammocks or similar locations that can be used for sleeping when the boat is under way
Note 1 to entry: A boat is considered to be “habitable” if a fabric closure is used instead of a rigid door, or the
cabin has fabric sides.
Note 2 to entry: The following are not considered to render a boat “habitable”:
— a cockpit tent, or
— an open-sided cuddy intended to provide limited protection from spray, provided it is not fitted with fabric
closures all round.
Note 3 to entry: Locations used for sleeping have minimum dimensions of 1,5 m diagonal length, 0,4 m width
at the widest point, and with a minimum headroom of 0,4 m over the length. The cabin sole and compartments
designated by the builder to be used exclusively for storage and referenced in the owner’s manual are not
included.
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oSIST prEN ISO 12217-3:2021
ISO/FDIS 12217-3:2020(E)

3.2 Downflooding
3.2.1
downflooding opening
any opening in the hull
...