SIST EN ISO 12217-1:2002/A1:2009

Small craft - Stability and buoyancy assessment and categorization - Part 1: Non-sailing boats of hull length greater than or equal to 6 m - Amendment 1 (ISO 12217-1:2002/Amd 1:2009)

Kleine Wasserfahrzeuge - Stabilitäts- und Auftriebsbewertung und Kategorisierung - Teil 1: Nicht-Segelboote mit einer Rumpflänge größer als oder gleich 6 m (ISO 12217-1:2002/Amd 1:2009)

Dieses Dokument (EN ISO 12217-1:2002/A1:2009) wurde vom Technischen Komitee ISO/TC 188 Small craft erarbeitet.
Diese Änderung zur Europäischen Norm EN ISO 12217-1:2002 muss den Status einer nationalen Norm erhalten, entweder durch Veröffentlichung eines identischen Textes oder durch Anerkennung bis Dezember 2009, und etwaige entgegenstehende nationale Normen müssen bis Dezember 2009 zurückgezogen werden.
Es wird auf die Möglichkeit hingewiesen, dass einige Texte dieses Dokuments Patentrechte berühren können. CEN [und/oder CENELEC] sind nicht dafür verantwortlich, einige oder alle diesbezüglichen Patentrechte zu identifizieren.
Dieses Dokument wurde unter einem Mandat erarbeitet, das die Europäische Kommission und die Europäische Freihandelszone dem CEN erteilt haben, und unterstützt grundlegende Anforderungen der EG  Richtlinien.

Petits navires - Évaluation et catégorisation de la stabilité et de la flottabilité - Partie 1: Bateaux à propulsion non vélique d'une longueur de coque supérieure ou égale à 6 m - Amendement 1 (ISO 12217-1:2002/Amd 1:2009)

Mala plovila - Stabilnost in ocena vzgona ter kategorizacija - 1. del: Čolni, razen jadrnic, s trupom, večjim ali enakim 6 m - Dopolnilo 1 (ISO 12217-1:2002/Amd 1:2009)

General Information

• Status: Withdrawn
• Public Enquiry End Date: 17-Mar-2008
• Publication Date: 14-Jul-2009
• Withdrawal Date: 28-Mar-2013
• ICS: 47.080 - Small craft
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 26-Mar-2013
• Due Date: 18-Apr-2013
• Completion Date: 29-Mar-2013
• Directive: 2003/44/EC - Approximation of the laws, regulations and administrative provisions of the Member States relating to recreational craft
• Directive: 94/25/EC - Directive 94/25/EC of the European Parliament and of the Council of 16 June 1994 on the approximation of the laws, regulations and administrative provisions of the Member States relating to recreational craft
• Mandate: M/075 - Revised mandate to CEN for standardization in the field of recreational craft
• Ref Project: EN ISO 12217-1:2002/A1:2009 - Small craft - Stability and buoyancy assessment and categorization - Part 1: Non-sailing boats of hull length greater than or equal to 6 m - Amendment 1 (ISO 12217-1:2002/Amd 1:2009)

Relations

• Amends: SIST EN ISO 12217-1:2002 - Small craft - Stability and buoyancy assessment and categorization - Part 1: Non-sailing boats of hull length greater than or equal to 6 m (ISO 12217-1:2002)
• Effective Date: 01-Sep-2009
• Replaced By: SIST EN ISO 12217-1:2013 - Small craft - Stability and buoyancy assessment and categorization - Part 1: Non-sailing boats of hull length greater than or equal to 6 m (ISO 12217-1:2013)
• Effective Date: 01-May-2013
• Amends: SIST EN ISO 12217-1:2002 - Small craft - Stability and buoyancy assessment and categorization - Part 1: Non-sailing boats of hull length greater than or equal to 6 m (ISO 12217-1:2002)
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 12217-1:2002/A1:2009
01-september-2009
0DODSORYLOD6WDELOQRVWLQRFHQDY]JRQDWHUNDWHJRUL]DFLMDGHOýROQLUD]HQ
MDGUQLFVWUXSRPYHþMLPDOLHQDNLPP'RSROQLOR,62$PG

Small craft - Stability and buoyancy assessment and categorization - Part 1: Non-sailing
boats of hull length greater than or equal to 6 m - Amendment 1 (ISO 12217-1:2002/Amd
1:2009)
Kleine Wasserfahrzeuge - Stabilitäts- und Auftriebsbewertung und Kategorisierung - Teil
1: Nicht-Segelboote mit einer Rumpflänge größer als oder gleich 6 m (ISO 12217-
1:2002/Amd 1:2009)
Petits navires - Évaluation et catégorisation de la stabilité et de la flottabilité - Partie 1:
Bateaux à propulsion non vélique d'une longueur de coque supérieure ou égale à 6 m -
Amendement 1 (ISO 12217-1:2002/Amd 1:2009)
Ta slovenski standard je istoveten z: EN ISO 12217-1:2002/A1:2009
ICS:
47.080 ýROQL Small craft
SIST EN ISO 12217-1:2002/A1:2009 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 12217-1:2002/A1:2009

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SIST EN ISO 12217-1:2002/A1:2009
EUROPEAN STANDARD
EN ISO 12217-1:2002/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2009
ICS 47.080
English Version
Small craft - Stability and buoyancy assessment and
categorization - Part 1: Non-sailing boats of hull length greater
than or equal to 6 m - Amendment 1 (ISO 12217-1:2002/Amd
1:2009)
Petits navires - Évaluation et catégorisation de la stabilité et Kleine Wasserfahrzeuge - Stabilitäts- und
de la flottabilité - Partie 1: Bateaux à propulsion non vélique Auftriebsbewertung und Kategorisierung - Teil 1: Nicht-
d'une longueur de coque supérieure ou égale à 6 m - Segelboote mit einer Rumpflänge größer als oder gleich 6
Amendement 1 (ISO 12217-1:2002/Amd 1:2009) m (ISO 12217-1:2002/Amd 1:2009)
This amendment A1 modifies the European Standard EN ISO 12217-1:2002; it was approved by CEN on 27 May 2009.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references concerning such
national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This amendment 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12217-1:2002/A1:2009: E
worldwide for CEN national Members.

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SIST EN ISO 12217-1:2002/A1:2009
EN ISO 12217-1:2002/A1:2009 (E)
Contents Page
Foreword .3
Annex ZA (informative) Relationship between this International Standard and the Essential
Requirements of EU Directive 94/25/EC .4

2

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SIST EN ISO 12217-1:2002/A1:2009
EN ISO 12217-1:2002/A1:2009 (E)
Foreword
This document (EN ISO 12217-1:2002/A1:2009) has been prepared by Technical Committee ISO/TC 188
"Small craft".
This Amendment to the European Standard EN ISO 12217-1:2002 shall be given the status of a national
standard, either by publication of an identical text or by endorsement, at the latest by December 2009, and
conflicting national standards shall be withdrawn at the latest by December 2009.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
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 EC Directive.
For relationship with EC Directive, 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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 12217-1:2002/Amd 1:2009 has been approved by CEN as a EN ISO 12217-1:2002/A1:2009
without any modification.
3

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SIST EN ISO 12217-1:2002/A1:2009
EN ISO 12217-1:2002/A1:2009 (E)
Annex ZA
(informative)

Relationship between this International Standard and the Essential
Requirements of EU Directive 94/25/EC
This International Standard has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association to provide one means of conforming to Essential Requirements of
the New Approach Directive 94/25/EC relating to recreational craft, as amended by New Approach Directive
2003/44/EC.

Once this standard is cited in the Official Journal of the European Communities under that Directive and has
been implemented as a national standard in at least one Member State, compliance with the normative
clauses of this standard 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.
WARNING — Other requirements and other EU Directives may be applicable to the products falling
within the scope of this standard.
4

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SIST EN ISO 12217-1:2002/A1:2009

INTERNATIONAL ISO
STANDARD 12217-1
First edition
2002-04-01
AMENDMENT 1
2009-06-15


Small craft — Stability and buoyancy
assessment and categorization —
Part 1:
Non-sailing boats of hull length greater
than or equal to 6 m
AMENDMENT 1
Petits navires — Évaluation et catégorisation de la stabilité et de la
flottabilité
Partie 1: Bateaux à propulsion non vélique d'une longueur de coque
supérieure ou égale à 6 m
AMENDEMENT 1





Reference number
ISO 12217-1:2002/Amd.1:2009(E)
©
ISO 2009

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SIST EN ISO 12217-1:2002/A1:2009
ISO 12217-1:2002/Amd.1:2009(E)
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Published in Switzerland

ii © ISO 2009 – All rights reserved

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SIST EN ISO 12217-1:2002/A1:2009
ISO 12217-1:2002/Amd.1:2009(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
Amendment 1 to ISO 12217-1:2002 was prepared by Technical Committee ISO/TC 188, Small craft.
© ISO 2009 – All rights reserved iii

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SIST EN ISO 12217-1:2002/A1:2009

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SIST EN ISO 12217-1:2002/A1:2009
ISO 12217-1:2002/Amd.1:2009(E)

Small craft — Stability and buoyancy assessment and
categorization —
Part 1:
Non-sailing boats of hull length greater than or equal to 6 m
AMENDMENT 1
Page 10, Table 2
Delete the row commencing “Downflooding angle”.
Page 10, 6.1.1.1
In the first line, delete “and 6.1.3”.
Page 12, 6.1.2.1 c)
In the third line, replace “the lowest point of that coaming” with “the lowest point of water ingress of that
coaming (see Annex C)”.
Page 14, 6.1.3
Delete this subclause.
Page 14, 6.2
Replace 6.2 with the following:
6.2 Offset-load test
6.2.1 Objective
This test is to demonstrate sufficient stability for the boat against offset loading by the crew.
The test considers the hazards of downflooding, excessive heel angle and sudden loss of stability caused by
the heeling moment exceeding the maximum righting moment. It also considers the possible variations in
vertical positioning of the crew on boats with more than one deck or cockpit level.
© ISO 2009 – All rights reserved 1

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SIST EN ISO 12217-1:2002/A1:2009
ISO 12217-1:2002/Amd.1:2009(E)
6.2.2 Test
Conduct the offset-load test in accordance with Annex B using either the simplified method or the full method.
NOTE The simplified method incorporates greater safety margins and is most suitable for boats with generous static
stability in relation to the crew limit, e.g. those with a crew limit of less than one per metre length.
The full method may be applied using either the physical test or the calculation method. The simplified method
may only be applied by calculation.
6.2.3 Requirements
a) During the test, the heel angle φ shall be not greater than
O
3
24− L
()
H
φ =+11,5
O(R)
520
(see Table 3)
Table 3 — Maximum permitted heel angle for offset-load test
L (m) 6,0 7,0 8,0 9,0 10,0 12,0 15,0 18,0 21,0 24,0
H
φ (°) 22,7 20,9 19,4 18,0 16,8 14,8 12,9 11,9 11,6 11,5
O(R)

b) During the test, the freeboard margin to downflooding shall not be less than that given in Table 4.
Table 4 — Required minimum heeled freeboard margin during offset-load test
Dimensions in metres
Design category A B C D
0,26 B 0,145 B

Option 1 or 3 in Table 2 not applicable not applicable
H H
0,046 B
Option 2 in Table 2 not applicable not applicable 0,010
H
0,046 B
Option 4 in Table 2 not applicable not applicable 0,010
H
0,110√L 0,070√L
Option 5 or 6 in Table 2 not applicable not applicable
H H

Page 19, Annex A
0,5
In the sixth line, replace “F = 0,7 + k ” with “F = 0,7 + k ”.
3 0,5 3
Page 20, Annex B
Replace Annex B with the following:
2 © ISO 2009 – All rights reserved

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SIST EN ISO 12217-1:2002/A1:2009
ISO 12217-1:2002/Amd.1:2009(E)
Annex B
(normative)

Method for offset-load test
B.1 Objective
The objective is to determine the safe crew limit when all persons on board are crowded to one side.
B.2 Means of determination
The test may be conducted in any of the following ways:
a) physical test (full method only);
b) calculation with supporting tests, but including separate additional margins to allow for errors, see D.2 (full
or simplified methods);
c) calculation using supporting information from an inclining experiment (full or simplified methods).
Details of the application of these alternatives are given in B.3 to B.5.
B.3 Methods
B.3.1 General
B.3.1.1 This test is to demonstrate sufficient stability against offset loading by the crew, for unswamped
boats. If it is more convenient, people may be used instead of test weights provided that the mass of each
person used equals or exceeds that of the relevant test weight. Calculation of stability using a mass for the
boat established by measurement may be used instead of a physical test. Testing shall be conducted in
conditions of smooth water and light winds.
B.3.1.2 Each boat shall be tested according to either the simplified method in B.3.2 or the full method in
B.3.3. The full method may be applied using either the physical test or calculation method. The simplified
method may only be applied by calculation.
NOTE The simplified method incorporates greater safety margins and is most suitable for boats with generous static
stability in relation to the crew limit, e.g. those with a crew limit of less than one per metre length.
B.3.1.3 All boats shall be tested at loaded displacement mass, m , except that boats having any tank
LDC
(fuel, fresh and black water, live wells, oils, etc.) that has a maximum transverse dimension greater than
0,35B shall be tested with all tanks as close as practicable to 50 % full, but never less than 25 % or more
H
than 75 % full. Where applicable, free-surface effect shall be represented either by a virtual increase in the
VCG or by using a computer software that models the movement of fluid in tanks.
B.3.1.4 In general, boats shall be tested when heeled to both port and starboard. However, where it is
clearly evident that one direction of heel is the most critical, only heel angles in this direction need be tested.
EXAMPLE Initial list and/or lower downflooding openings on one side and/or crew area are clearly asymmetrical.
© ISO 2009 – All rights reserved 3

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SIST EN ISO 12217-1:2002/A1:2009
ISO 12217-1:2002/Amd.1:2009(E)
B.3.1.5 During the tests, on boats with watertight or quick-draining cockpits, water may enter the cockpit
through drains when the boat is heeled during the test, provided that this water drains overboard when all test
weights on board are moved to the centreline. Where water enters the boat during the test, the heel angle and
downflooding height measurements shall be recorded after the inflow of water has stopped.
B.3.1.6 During the tests, the freeboard margin (vertical height from the waterline) shall then be measured
to the point at which water could first begin to enter the interior or bilge – see Annex C. When measuring the
freeboard margin, downflooding openings through the topsides should also be considered. When making such
measurements, one outboard engine well penetration fitted with a sealing boot may be regarded as watertight.
B.3.1.7 The “crew area” comprises the “working deck” as defined by the manufacturer in accordance with
ISO 15085 plus the areas of all seats, bunks, sunbathing pads and internal decks. It shall always include all of
the primary cockpit, and all areas designated to be used by the crew when the boat is stationary, but can
exclude ledges less than 0,05 m in width.
NOTE See ISO 15085:2003, 3.6, Note 3 for treatment of sloping surfaces.
If the manufacturer chooses to assess the stability by excluding some areas from the “crew area” or limiting
the number of people on any given level,
⎯ such areas shall be listed in the Owner’s Manual, and
⎯ such areas shall be physically marked at all clearly defined points of access with “no access” or “limited
access” signs as illustrated in Figures B.1 and B.2, or
⎯ a diagram shall be placed at each helm position identifying such areas and their access limitations – see
Figure B.3, and in addition “no access” or “limited access” signs as illustrated in Figures B.1 and B.2 shall
be placed at those points of access not visible from all alternative helm positions.
In open boats, the crew area comprises all the interior of the boat. In dayboats it may be restricted to the
cockpit provided that doing so still permits anchoring or mooring to be undertaken.
In Figure B.2 the number and the location should be adjusted as appropriate to the required restriction, e.g. coachroof,
foredeck, flybridge.
No access

Figure B.1 — No access
(using ISO 7010 – P004 "No thoroughfare")
Max 2   on
coachroof

Figure B.2 — Limited access
(using ISO 7010 – W001 "General warning")
4 © ISO 2009 – All rights reserved

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SIST EN ISO 12217-1:2002/A1:2009
ISO 12217-1:2002/Amd.1:2009(E)

Figure B.3 — Example of crew area and access limitation label for control position
(using ISO 7010 – W001 "General warning")
B.3.1.8 When such labels are fitted, they shall be placed where they are clearly visible, and shall be
made of rigid plate or flexible labels affixed to the craft in such a way that they can only be removed by the
use of tools. The size of the symbols and text in Figures B.1, B.2 and B.3 shall comply with Table B.1. Text
shall be in black on a white background, using a plain sans serif typeface such as Arial Narrow. The language
used shall be acceptable or as required in the country of intended use.
Table B.1 — Size of safety signs and supplementary text
u 0,6 > 0,6 u 1,2 > 1,2 u 1,8 > 1,8 u 2,4
Expected viewing distance (m)
> 2,4
Minimum height of sign in figures (mm) 20,0 20,0 30,0 40,0 50,0
Minimum height of capital letters (mm) 2,4 4,8 7,2 9,6 12,0

a
1,7 3,4 5,1 6,9 8,6
Minimum height of lower case letters (mm)
a
For example, height of the letter “e”.

B.3.2 Simplified procedure for offset-load test
B.3.2.1 This method may only be applied by calculation.
B.3.2.2 Calculate the mass and centre-of-gravity of the boat for two conditions (LC1 and LC2) as follows:
⎯ boat in loaded displacement condition except for the tanks, which are to be treated as described in
B.3.1.3;
⎯ VCG of the crew used shall represent the maximum number permitted (at 85 kg each) on the highest part
of the crew area (as defined in B.3.1.7), e.g. flybridge or coachroof top, located with their VCG 0,1 m
above seats, and the maximum number of crew permitted (at 85 kg each) on each successively lower
part of the crew area (e.g. wheelhouse, main deck or cockpit), located with their VCG 0,1 m above the
seats, until the total number of persons equals the intended crew limit. Where there are no seats, the
VCG of crew shall be located 0,1 m above the surface on which they stand;
⎯ (LC1) LCG of the crew at 75 % of the crew area length (as defined in B.3.1.7) forward of its aft limit, and
CG on the centreline;
⎯ (LC2) LCG of the crew at 25 % of the crew area length (as defined in B.3.1.7) forward of its aft limit, and
CG on the centreline.
B.3.2.3 Calculate the curve of righting moments according to Annex D.
B.3.2.4 Apply a heeling moment equal to 961 CL (B /2 − 0,2) cos φ (N⋅m), where B is the maximum
C C
transverse distance between the outboard extremities of any parts of the crew area as defined in B.3.1.7, and
© ISO 2009 – All rights reserved 5

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SIST EN ISO 12217-1:2002/A1:2009
ISO 12217-1:2002/Amd.1:2009(E)
φ is the heel angle. Where the crew area includes side decks less than 0,4 m wide, the moment used shall be
480 CL B cos φ (N⋅m). Ledges less than 0,05 m wide may be excluded from the crew area.
C
B.3.2.5 The boat satisfies the test if:
⎯ the minimum freeboard margin before downflooding (see Annex C) is not less than required in Table 4,
whether obvious to the crew (e.g. over the gunwale) or not obvious (e.g. through openings in the
topsides), and
3
24− L
()
H
⎯ the heel angle (degrees) does not exceed 11,5 + , see also Table 3, and
520
⎯ the maximum righting moment occurring up to the downflooding angle is greater than the heeling moment
at the resulting heel angle.
B.3.3 Full procedure for offset-load test
B.3.3.1 This method may be applied by either physical test or by calculation. Calculation should replicate
the physical test method described below.
B.3.3.2 Prepare a set of test weights totalling 85 kg for each person up to the desired crew limit. Then test
the boat according to B.3.3.3. Where the crew limit is expected to exceed seven persons, up to 25 % of the
crew limit may be added at each of the first two stages in B.3.3.3 a) and c). Increments for the following
stages shall not exceed one person.
NOTE 1 The use of water containers instead of metallic test weights will give a less advantageous result. The use of
persons might give a less advantageous result but be more convenient to test.
NOTE 2 85 kg includes a margin of 13 % to allow for the probability that a group of persons can weigh on average
more than 75 kg each.
B.3.3.3 The following procedure shall be followed.
a) With the boat at loaded displacement mass except that the tanks are to be filled as in B.3.1.3, place the
first set of test weights to one side of the crew area, but not less than 200 mm from the outboard edge of
the crew area, in the position that results in the maximum heel angle, investigating positioning test
weights on various deck levels within the crew area and at various longitudinal locations to ensure that
the worst case is found. Measure the heel angle and freeboard margin (see Annex C). Where the crew
area includes side decks less than 0,4 m wide, test weights shall be placed at mid-width of such decks.
b) If necessary, repeat in the opposite direction of heel. Where both directions are tested, the most adverse
of the two measurements made of each parameter shall be recorded.
c) Place the next set of test weights to one side of the crew area, in the position that results in the maximum
heel angle, investigating positioning test weights on various deck levels within the crew area and at
various longitudinal locations to ensure that the worst case is found. The centre of gravity of the sets of
test weights shall be positioned as far to one side as practicable, provided that adjacent sets of test
weights are not placed with their centres of gravity less than 500 mm apart in any direction, or less than
200 mm from the outboard edge of the crew area. Where the crew area includes side decks less than
0,4 m wide, test weights shall be placed at mid-width of such decks.
d) Measure the heel angle and least freeboard margin. If necessary, repeat in the opposite direction of heel.
Where both directions are tested, the most adverse of the two measurements made shall be recorded.
6 © ISO 2009 – All rights reserved

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SIST EN ISO 12217-1:2002/A1:2009
ISO 12217-1:2002/Amd.1:2009(E)
e) Repeat c) and d) for further increments of not more than one set of test weights at a time, whilst
observing the manufacturer’s definition of crew area according to B.3.1.7. Stop the test when the first of
the following events happens:
1) the minimum freeboard margin before downflooding is reached (see Annex C) according to Table 4,
whether obvious to the crew (e.g. over the gunwale) or not obvious to the crew (e.g. through
downflooding openings in the topsides);
3
24− L
()
H
2) the heel angle (degrees) is about to exceed 11,5 + (see also Table 3);
520
3) the total mass of test weights on board reaches 98 kg per person for the desired crew limit;
NOTE 98 kg per person is used here to ensure that a safety margin is achieved against sudden loss of
stability.
4) the heel angle suddenly increases a large amount for a small increase in heeling moment. This is
when the boat is close to a complete loss of residual stability and consequent capsize.
CAUTION — Take great care when doing this test because some boats can capsize suddenly. Increase
heeling moments carefully, especially when approaching the expected crew limit. As this point is
approached, use smaller increments of test weights. In smaller boats it is helpful to attach a capsize-
preventer rope (e.g. from the depressed gunwale to a strong point ashore) provided that this is kept
slack enough not to interfere with the test. For larger boats, to give warning of loss of stability, use a
continuously plotted graph of heel angle against heeling moment (mass of test weights multiplied by
the distance off the centreline measured parallel to the design waterline).
CAUTION — Because of the risk of capsize, persons should not be used instead of sets of test
weights in any locations from which escape would become hazardous.
f) Of the measurements made according to a), b), d) or e), the maximum heel angle recorded shall be less
than that required in e) above, and the minimum measured freeboard margin recorded shall exceed the
requirement for the appropriate option as given in Table 4.
g) If the test is limited by downflooding that is obvious to the crew (eg: over the gunwale), the crew limit
corresponds to the maximum mass of test weights divided by 85 kg, and rounded downward to the
nearest whole number.
h) If the test is limited by maximum heel angle, loss of stability or downflooding that is not obvious to the
crew (e.g. through openings in the topsides), the crew limit corresponds to the maximum mass of test
weights divided by 98 kg and rounded downward to the nearest whole number.
NOTE 98 kg per person is used here to ensure that a safety margin is achieved against sudden loss of stability.
i) After completion of testing according to a) to h), the sets of test weights are to be moved to the positions
[using the criteria of c) above] that result in the least freeboard margin. If the measured freeboard does
not satisfy Table 4, sets of test weights shall be removed until this is achieved, whilst maintaining the
most adverse positioning of the remainder.
j) The final crew limit shall be that which complies with both the procedure described in a) to h), and that
given in i) above.
B.3.4 Additions of top-weight
Because additions of weight high above the waterline can dramatically affect the heel angle during this test, it
is important that the test and/or calculations be undertaken for any boat that deviates substantially from the
standard outfit. In particular, masts, radar antennae, lifting equipment and flybridges can significantly affect
stability. The effects of such equipment variations from a boat on which a test has been performed can be
determined by calculation using the mass and co-ordinates of the equipment variations.
© ISO 2009 – All rights reserved 7

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SIST EN ISO 12217-1:2002/A1:2009
ISO 12217-1:2002/Amd.1:2009(E)
A significant deviation from the standard outfit shall be assumed to have occurred if
Σ(m,h) > 0,02B m
H LDC
where
Σ(m,h) is the sum for all variations from the standard outfit of the product of the mass of the component
and its height above the waterline.
B.4 Assessment by physical test
Test weights or persons may be used to represent the mass of the crew. Where persons are used, the
moment applied shall be calculated using their actual masses. If standing, they should stand with feet together
and maintain their balance without using handholds unless this is essential for their safety.
When applying the heeling moments according to B.3.3.3, the vertical position of the crew may either be
represented by persons or by test weights placed on top of seats, or on the deck where the people are
assumed to be standing.
When recording the heel angle of the boat, people engaged in measuring this shall return to the same position
on board each time that measurements are recorded. Heeled freeboard margin shall be measured by a
person not on board the boat being tested.
CAUTION — Take great care during the test to avoid capsize or sinking. Refer to
...