SIST EN ISO 6185-4:2011

SLOVENSKI STANDARD
01-oktober-2011
1DSLKOMLYLþROQLGHOýROQLVFHORWQRGROåLQRRGGRP]PRWRUMHP]PRþMR
N:LQYHþ,62
Inflatable boats - Part 4: Boats with a hull length of between 8 m and 24 m with a motor
power rating of 15 kW and greater (ISO 6185-4:2011)
Aufblasbare Boote - Teil 4: Boote mit einer Gesamtlänge zwischen 8 m und 24 m mit
einer Motorleistung von 15 kW und mehr (ISO 6185-4:2011)
Bateaux pneumatiques - Partie 4: Bateaux d'une longueur de coque comprise entre 8 m
et 24 m et d'une puissance moteur nominale supérieure ou égale à 15 kW (ISO 6185-
4:2011)
Ta slovenski standard je istoveten z: EN ISO 6185-4:2011
ICS:
47.080 ýROQL Small craft
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 6185-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2011
ICS 47.080
English Version
Inflatable boats - Part 4: Boats with a hull length of between 8 m
and 24 m with a motor power rating of 15 kW and greater (ISO
6185-4:2011)
Bateaux pneumatiques - Partie 4: Bateaux d'une longueur Aufblasbare Boote - Teil 4: Boote mit einer Gesamtlänge
de coque comprise entre 8 m et 24 m et d'une puissance zwischen 8 m und 24 m mit einer Motorleistung von 15 kW
moteur nominale supérieure ou égale à 15 kW (ISO 6185- und mehr (ISO 6185-4:2011)
4:2011)
This European Standard was approved by CEN on 25 June 2011.

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, 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
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 6185-4:2011: E
worldwide for CEN national Members.

Contents Page
Foreword .3
Annex ZA (informative) Relationship between this International Standard and
the Essential Requirements of EU Directive 94/25/EC as amended by Directive 2003/44/EC .4

Foreword
The text of ISO 6185-4:2011 has been prepared by Technical Committee ISO/TC 188 “Small craft”.
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 January 2012, and conflicting national standards shall be withdrawn at
the latest by January 2012.
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 EU Directives.
For relationship with EU Directives, 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, 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 6185-4:2011 has been approved by CEN as a EN ISO 6185-4:2011 without any modification.
Annex ZA
(informative)
Relationship between this European Standard and
the Essential Requirements of EU Directive 94/25/EC as amended by
Directive 2003/44/EC
This European Standard has been prepared under a mandate given to CEN by the European Commission to
provide a means of conforming to Essential Requirements of the New Approach Directive 94/25/EC as
amended by Directive 2003/44/EC.
Once this standard is cited in the Official Journal of the European Union 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 product(s) falling
within the scope of this standard.

INTERNATIONAL ISO
STANDARD 6185-4
First edition
2011-07-01
Inflatable boats —
Part 4:
Boats with a hull length of between 8 m
and 24 m with a motor power rating of
15 kW and greater
Bateaux pneumatiques —
Partie 4: Bateaux d'une longueur de coque comprise entre 8 m et 24 m
et d'une puissance moteur nominale supérieure ou égale à 15 kW

Reference number
ISO 6185-4:2011(E)
©
ISO 2011
ISO 6185-4:2011(E)
©  ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
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Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
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Published in Switzerland
ii © ISO 2011 – All rights reserved

ISO 6185-4:2011(E)
Contents Page
Foreword .v
Introduction.vi
1 Scope.1
2 Normative references.1
3 Terms and definitions .3
4 Symbols.4
5 Materials .5
5.1 General .5
5.2 Materials making up the buoyancy tube .5
5.3 Wood.7
5.4 Metal parts.7
5.5 Glass-reinforced plastics.8
5.6 Other materials .8
5.7 Buoyant material used in foam-filled buoyancy tubes.8
6 Functional components.9
6.1 Conditioning .9
6.2 Buoyancy tube and hull fittings (items bonded to the buoyancy tube) .9
6.3 Valves (if applicable).10
6.4 Transom.10
6.5 Hull interior drainage .10
6.6 Remote steering system (where offered as standard or optional equipment) .10
6.7 Towing, anchoring and mooring strong points.11
6.8 Seating and attachment systems (where offered as standard or optional equipment).11
6.9 Electrical installations (where offered as standard or optional equipment).11
6.10 Engine and engine spaces .11
6.11 Ventilation of petrol motor and petrol tank compartments (where applicable).11
6.12 Devices for lifting the boat (if applicable).12
6.13 Fire protection (if applicable) .12
6.14 Openings in hull, deck or superstructure.12
6.15 Gas systems .12
6.16 Navigation lights.12
6.17 Discharge prevention.12
6.18 Noise emissions (applicable to inboard engines installations without integral exhaust).12
7 Safety requirements of the completed boat .12
7.1 Maximum permissible number of persons (crew limit).12
7.2 Motor power calculation .13
7.3 Maximal manoeuvring speed (if applicable).13
7.4 Static stability of the boat.16
7.5 Maximum load capacity .17
7.6 Buoyancy requirements.17
7.7 Compartmentation (inflatable buoyancy tubes).18
7.8 Nominal pressures (inflatable buoyancy tubes) .18
7.9 Strength of the inflatable buoyancy tube.18
7.10 Man overboard prevention and recovery.19
7.11 Field of vision from the helm position .19
7.12 Provision for a liferaft or liferafts.19
7.13 Self-bailing .19
7.14 Buoyancy tube attachment strength test (type test only).20
ISO 6185-4:2011(E)
7.15 Strength of the rigid structure (type test only) .22
7.16 Strength of principal factory-fitted accessories.22
8 Builder's plate(s).24
9 Owner's manual .24
10 Standard equipment .25
Annex A (informative) Typical Type IX powered boat .26
Annex B (informative) Typical Type X powered boat .28
Bibliography .29

iv © ISO 2011 – All rights reserved

ISO 6185-4:2011(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.
ISO 6185-4 was prepared by Technical Committee ISO/TC 188, Small craft.
This first edition, together with ISO 6185-1, ISO 6185-2 and ISO 6185-3, cancels and replaces ISO 6185:1982,
which has been technically revised.
ISO 6185 consists of the following parts, under the general title Inflatable boats:
⎯ Part 1: Boats with a maximum motor power rating of 4,5 kW
⎯ Part 2: Boats with a maximum motor power rating of 4,5 kW to 15 kW inclusive
⎯ Part 3: Boats with a maximum motor power rating of 15 kW and greater
⎯ Part 4: Boats with a hull length of between 8 m and 24 m with a motor power rating of 15 kW and greater
ISO 6185-4:2011(E)
Introduction
ISO 6185 is subdivided into four parts as shown in Figure 1.
It excludes
a) single-chamber boats,
b) boats of less than 1 800 N buoyancy, and
c) boats made from unsupported materials of more than 12 kN inflated buoyancy and powered by motors of
power P > 4,5 kW.
It is not applicable to aquatic toys, nor to inflatable liferafts which are specified in ISO 9650.
ISO 6185-1:
⎯ Type I Boats with L < 8 m propelled exclusively by manual means.
H
⎯ Type II Powered boats with L < 8 m with a power P ≤ 4,5 kW.
H
⎯ Type III Canoes and kayaks with L < 8 m.
H
⎯ Type IV Sail boats with L < 8 m with a sail area less than or equal to 6 m .
H
ISO 6185-2:
⎯ Type V Powered boats with L < 8 m with a power 4,5 kW < P ≤ 15 kW.
H
⎯ Type VI Sail boats with L < 8 m with a sail area greater than 6 m .
H
ISO 6185-3:
⎯ Type Vll Powered boats with L < 8 m with a power P ≥ 15 kW.
H
⎯ Type Vlll Powered boats with L < 8 m with a power P ≥ 75 kW.
H
ISO 6185-4:
⎯ Type IX Powered boats (design categories C and D) with 8 m < L ≤ 24 m with power P ≥ 15 kW.
H
⎯ Type X Powered boats (design category B) with 8 m < L ≤ 24 m with power P ≥ 75 kW.
H
vi © ISO 2011 – All rights reserved

ISO 6185-4:2011(E)
Figure 1 — Illustration of how ISO 6185 is subdivided
This part of ISO 6185 enables the boat to be assigned to a design category appropriate to its design and
maximum load. The categories used align with those in the Recreational Craft Directive of the European
Union, EU Directive 94/25/EC as amended by Directive 2003/44/EC.

INTERNATIONAL STANDARD ISO 6185-4:2011(E)

Inflatable boats —
Part 4:
Boats with a hull length of between 8 m and 24 m with a motor
power rating of 15 kW and greater
WARNING — Attention is drawn to the completion process whereby structural items, for example
steering consoles, seats and superstructures, are installed by parties other than the manufacturer of
the boat. These items should be installed to comply with the relevant clauses of this part of ISO 6185
so it can be ensured that any such installations do not invalidate the original assessment.
1 Scope
This part of ISO 6185 specifies the minimum safety characteristics required for the design, materials,
manufacture and testing of rigid inflatable boats (RIBs) with a hull length of between 8 m and 24 m and with a
motor power rating of 15 kW and greater.
This part of ISO 6185 is applicable to Type IX and Type X RIBs intended for use within the operating
temperatures of −20 °C to +60 °C.
⎯ Type IX: Powered boats, fitted with a buoyancy tube covering at least 85 % of the port and starboard
sides, suitable for navigation in inshore and sheltered waters, up to and including wind force 6 Beaufort
and significant wave heights up to 2 m (design categories C and D), with a hull length of between 8 m and
24 m and with a motor power rating of 15 kW and greater.
⎯ Type X: Powered boats, fitted with a buoyancy tube covering at least 85 % of the port and starboard sides,
suitable for navigation in waters, up to wind force 8 Beaufort and significant wave heights up to 4 m
(design category B), with a hull length of between 8 m and 24 m and with a motor power rating of 75 kW
and greater.
NOTE 1 General arrangements of typical boats of Types IX and X are given in Annexes A and B, respectively.
NOTE 2 For boats with power ratings of 4,5 kW and less, refer to ISO 6185-1. For boats with power ratings of 4,5 kW
to 15 kW inclusive, refer to ISO 6185-2. For boats with a hull length of less than 8 m and power rating of 15 kW and
greater, refer to ISO 6185-3.
Boats outside these types or outside of Type IX and Type X, as defined, are outside of the scope of ISO 6185.
NOTE 3 For inflatable boats with a hull length greater than 8 m, it is suggested to use the requirements of ISO 6185-3.
2 Normative references
The following referenced documents are indispensable for the application 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 1817, Rubber, vulcanized — Determination of the effect of liquids
ISO 6185-4:2011(E)
ISO 2411, Rubber- or plastics-coated fabrics — Determination of coating adhesion
ISO 3011, Rubber- or plastics-coated fabrics — Determination of resistance to ozone cracking under static
conditions
ISO 4674-1, Rubber- or plastics-coated fabrics — Determination of tear resistance — Part 1: Constant rate of
tear methods
ISO 4675, Rubber- or plastics-coated fabrics — Low-temperature bend test
ISO 6185-3:2001, Inflatable boats — Part 3: Boats with a maximum motor power rating of 15 kW and greater
ISO 7010:2011, Graphical symbols — Safety colours and safety signs — Registered safety signs
ISO 8099, Small craft — Toilet waste retention systems
ISO 8666, Small craft — Principal data
ISO 8847, Small craft — Steering gear — Cable and pulley systems
ISO 8848, Small craft — Remote steering systems
ISO 9093 (all parts), Small craft — Seacocks and through-hull fittings
1)
ISO 9094, Small craft — Fire protection
ISO 10087, Small craft — Craft identification — Coding system
ISO 10088, Small craft — Permanently installed fuel systems
ISO 10133, Small craft — Electrical systems — Extra-low-voltage d.c. installations
ISO 10239, Small craft — Liquefied petroleum gas (LPG) systems
ISO 10240, Small craft — Owner's manual
ISO 10592, Small craft — Hydraulic steering systems
ISO 11105, Small craft — Ventilation of petrol engine and/or petrol tank compartments
ISO 11591, Small craft, engine-driven — Field of vision from helm position
ISO 11812:2001, Small craft — Watertight cockpits and quick-draining cockpits
ISO 12215-3:2002, Small craft — Hull construction and scantlings — Part 3: Materials: Steel, aluminium alloys,
wood, other materials
ISO 12215-5, Small craft — Hull construction and scantlings — Part 5: Design pressures for monohulls,
design stresses, scantlings determination
ISO 12215-6, Small craft — Hull construction and scantlings — Part 6: Structural arrangements and details
ISO 12216, Small craft — Windows, portlights, hatches, deadlights and doors — Strength and watertightness
requirements
1) To be published. (Technical revision of ISO 9094-1:2003 and ISO 9094-2:2002.)
2 © ISO 2011 – All rights reserved

ISO 6185-4:2011(E)
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
ISO 13297, Small craft — Electrical systems — Alternating current installations
ISO 14945, Small craft — Builder's plate
ISO 14946:2001, Small craft — Maximum load capacity
ISO 15084, Small craft — Anchoring, mooring and towing — Strong points
ISO 15085:2003, Small craft — Man-overboard prevention and recovery
ISO 21487, Small craft — Permanently installed petrol and diesel fuel tanks
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
rigid inflatable boat
RIB
buoyant structure comprising two essential parts: a lower hull formed by a rigid structure, achieving part of its
intended shape with a non-rigid buoyancy tube that is of either inflatable or foam-filled type and where the
buoyant volume of the buoyancy tube comprises not less than 50 % of the total required buoyant volume of
the boat (3.4)
NOTE Tubes made from rigid aluminium, rotomoulded polyethylene, glass-reinforced plastic or other rigid materials
are excluded.
3.2
inflatable buoyancy tube
multi-chambered inflatable buoyancy tube attached to the length of both port and starboard sides of the hull
when the boat is in use, and inflated with air
3.3
foam-filled buoyancy tube
buoyancy tube attached to the length of both port and starboard sides of the hull when the boat is in use, and
filled with resilient closed-cell type foam
NOTE For material requirements, see 5.7.
3.4
buoyancy of a RIB
buoyancy comprising the buoyant volumes of the buoyancy tube (3.2 and 3.3), added to the permanent
inherent buoyancy (3.5), added to the permanent sealed buoyancy (3.6), added to the inherent buoyancy of
the rigid parts of the boat (3.7)
3.5
permanent inherent buoyancy
buoyancy provided by non-intercellular (closed-cell) foam or other materials, contained within the hull and
cockpit, which are less dense than fresh water
NOTE For material requirements, see ISO 12217-1:—, Annex F.

2) To be published. (Technical revision of ISO 12217-1:2002.)
ISO 6185-4:2011(E)
3.6
permanent sealed buoyancy
buoyancy provided by two or more sealed compartments, contained within the hull and cockpit, filled with air
NOTE For material requirements, see column “Air containers” in ISO 12217-1:—, Table F.1.
3.7
inherent buoyancy of the rigid parts of the boat
volume of the inherent buoyancy of the rigid parts of the boat calculated in accordance with ISO 12217-3:—,
Annex D
3.8
reinforced materials
materials which have a coated base cloth
3.9
inboard area
internal surface area defined by a vertical plane tangential to the innermost side of the buoyancy tube and
perpendicular to the cockpit sole
3.10
crew limit
CL
maximum number of persons to be carried when the boat is underway, as displayed on the builder's plate
3.11
design category
description of the sea and wind conditions for which a boat is assessed by this part of ISO 6185 to be suitable
NOTE The definitions of these design categories align with those used in the Recreational Craft Directive of the
European Union, EU Directive 94/25/EC as amended by Directive 2003/44/EC.
3.11.1
design category B “offshore”
category of boats considered suitable to operate in seas with significant wave heights up to 4 m and winds of
Beaufort force 8 or less
3.11.2
design category C “inshore”
category of boats considered suitable to operate in seas with significant wave heights up to 2 m and a typical
steady wind force of Beaufort force 6 or less
3.11.3
design category D “sheltered waters”
category of boats considered suitable to operate in waters with significant wave heights of up to and including
0,3 m with occasional waves of 0,5 m height, for example from passing boats, and a typical steady wind force
of Beaufort force 4 or less
4 Symbols
Unless specifically otherwise defined, the symbols and units used in this part of ISO 6185 are as given in
Table 1.
4 © ISO 2011 – All rights reserved

ISO 6185-4:2011(E)
Table 1 — Symbols and units
Symbol Designation Unit (Sub)clause
A windage area of hull in profile at the appropriate loading condition m 7.4
LV
maximum beam, measured in accordance with ISO 8666 with the inflatable
B m 7.2
max
buoyancy tubes inflated to nominal pressure
maximum buoyancy tube diameter, measured within the straight sections of
d m 5.2.2.5
the buoyancy tube
F tear resistance force N 5.2.2.5
t
F static load force N 5.2.2.7
s
length of the hull, measured in accordance with ISO 8666 with the inflatable
L m Introduction
H
buoyancy tubes inflated to nominal pressure
maximum length, measured in accordance with ISO 8666 with the inflatable
L m 7.2
max
buoyancy tubes inflated to nominal pressure
L length of the sample buoyancy tube section m 7.14.3
STS
L total length of the buoyancy tube on all sides of the boat m 7.14.3
T
m mass of test weights kg 7.14.3
t
m mass of boat when towed on a trailer, as defined in ISO 8666 kg 6.12
T
m mass of the boat in the light craft condition, as defined in ISO 12217-1:— kg 7.2
LC
m mass of the loaded boat, as defined in ISO 8666 kg 7.6.1 & 7.14.3
LDC
N number of buoyancy compartments unit 7.7
a
p nominal pressure at 20 °C bar 5.2.2.5
P motor power rating kW 7.2
calc
V total buoyant volume of the boat m 7.6.1

V volume of each compartment m 7.7
c
a
5 2
1 bar = 0,1 MPa = 10 Pa; 1 Mpa = 1 N/mm .

5 Materials
5.1 General
All materials shall be selected according to the stresses to which the boat is to be subjected (shape,
dimensions, maximum load, installed power, etc.) and also to the intended service conditions. Use under
normal seagoing conditions shall not materially impair their performance and they shall meet the requirements
of 5.2 to 5.7.
5.2 Materials making up the buoyancy tube
5.2.1 Requirements
All materials contributing to the integrity of the buoyancy tube shall meet the requirements of 5.2.2 and shall
retain their full serviceability within the operating temperature range of −20 °C to +60 °C.
ISO 6185-4:2011(E)
5.2.2 Test methods
5.2.2.1 Sampling
Carry out the test with test pieces taken from the constituent materials prior to making the buoyancy tube. If
the buoyancy tubes are vulcanized during manufacture, the test pieces shall also be vulcanized.
5.2.2.2 Resistance to liquids
Carry out the test on the external side, or the sides of the material in contact with the ambient environment, as
specified in ISO 1817 using IRM 901 oil (A) and salt water (B).
In both case A and case B, shown in Table 2, the change in mass per unit area shall not exceed 100 g/m
following the stipulated period of contact with the test fluid at a temperature of (70 ± 2) °C.
Table 2 — Duration of test
Parameter A B
a b
Test liquid IRM 901 oil Salt water
Period of contact (22 ± 0,25) h ≥ 336 h
a
IRM 901 oil has replaced ASTM oil No. 1.
b
Components of salt water: distilled water + 30 g of sodium chloride per litre.

5.2.2.3 Resistance to ozone
Carry out the test on the external face of the fabric in contact with the ambient environment as specified in
ISO 3011.
⎯ Exposure time: 72 h.
⎯ Temperature of test: (30 ± 2) °C.
−6
⎯ Concentration: a volume fraction of 0,5 ¥ 10 .
⎯ Mandrel diameter: 5 times the material thickness.
There shall be no signs of cracking on completion of the test when test samples are examined under 10 ¥
magnification.
5.2.2.4 Resistance to cold
All materials shall satisfy the requirements of ISO 4675 at a temperature of −20 °C.
5.2.2.5 Tear resistance
Carry out the test as specified in ISO 4674-1, method B.
The minimum value of tear resistance, F , is given by
t
Fd=+0,375()1,14p 0,14
t
In all cases, F shall be not less than 75 N.
t
6 © ISO 2011 – All rights reserved

ISO 6185-4:2011(E)
5.2.2.6 Coating adhesion
Carry out the test in accordance with ISO 2411 at room temperature and a machine rate of (100 ± 10) mm/min.
The minimum adhesion value shall be 40 N per 25 mm.
Alternatively to the preparation of test strips according to ISO 2411, it is permissible to cut a test strip 25 mm
wide by extending cuts A and B and ignoring cut C. In order for the test strips to be gripped, 50 mm shall be
left unbounded at one end. The test piece shall be “peeled” at (100 ± 10) mm/min and the surface coating cut
back to the fabric and allowed to run down the fabric/coating interface for at least 25 mm.
5.2.2.7 Seam strength testing of buoyancy tubes
Join two pieces of material together in the same manner as used in the buoyancy tube construction (method,
material and dimensions) to form a 50 mm wide test piece. Apply a static load, F , at 60 °C over a period of
s
4 h. Where more than one method of seam construction is used in the manufacture of the buoyancy tube,
carry out the test for each method.
The minimum value of F is given by
s
Fd=+0,375 1,14p 0,14
()
s
There shall be no slipping or other failure at any part of the seam.
5.3 Wood
5.3.1 General
The types of timber and plywood shall comply with ISO 12215-3.
All exposed timber and plywood shall be given weather-tight protection, such as paint, varnish or preservative,
suitable for a marine environment.
In the selection of protective coatings, national, regional and international regulations for the protection of the
environment shall be followed.
5.3.2 Plywood
Plywoods used may incorporate hardwoods or softwood plies and the bonding adhesive shall be waterproof
and boil-proof.
If the wood used for plies is not hardwood, the plies shall be treated to give protection against rot, fungal
decay and marine borers, and/or reinforced (laminate), where necessary.
All adjoining edges and/or surfaces, including any end grain, shall be effectively sealed.
Timber used shall be seasoned and free from sapwood, decay, insect attack, splits and other imperfections
likely to adversely affect the performance of the material. The timber shall be generally free from knots but an
occasional sound intergrown knot is acceptable.
5.3.3 Constructional timbers
Timber used in the construction shall be seasoned, and free from sapwood, shakes and other defects.
5.4 Metal parts
The types of metal shall comply with the requirements of ISO 12215-3:2002, Clause 4.
ISO 6185-4:2011(E)
5.5 Glass-reinforced plastics
Resins, reinforcements and laminates shall be arranged and protected against effects of the marine
environment to comply with the requirements of 7.15.
5.6 Other materials
Parts other than metal or wood shall comply with the requirements of ISO 12215-3:2002, Clause 6.
5.7 Buoyant material used in foam-filled buoyancy tubes
5.7.1 General
Buoyant materials used in foam-filled buoyancy tubes shall comply with the tests prescribed in 5.7.2
5.7.2 Tests
5.7.2.1 General
Ten samples of the buoyant material shall be subjected to the tests prescribed in 5.7.2.2 to 5.7.2.4. They shall
be at least 300 mm square and of the same thickness as used in the buoyancy tube.
The dimensions of the samples shall be recorded at the end of the 10 day cycle.
The samples shall be carefully examined at the end of the tests and shall not show any sign of external
change of structure or of mechanical properties. Furthermore, two of the samples shall be cut open and shall
not show any sign of internal change of structure.
Six of the samples shall be used for the water absorption test in 5.7.2.3, two of which shall be so tested after
they have been subjected to the fuel resistance test in 5.7.2.4.
The results shall state the mass in kilograms which each sample can support in the water after one and seven
days of immersion. (The selection of a test method suitable for obtaining this result directly or indirectly is left
to the discretion of the testing body.) The reduction of buoyancy shall not exceed 16 % for samples which
have been exposed to the diesel oil conditioning and shall not exceed 5 % for all other samples. The samples
shall show no sign of damage such as shrinking, cracking, swelling, dissolution or change of mechanical
qualities.
5.7.2.2 Tests for stability under temperature cycling
Six samples shall be alternately subjected for 8 h to surrounding temperatures of −30 °C and +65 °C. These
alternating cycles need not follow immediately after each other; the following procedure is acceptable.
a) On the first day, store the samples for 8 h at +65 °C.
b) Remove the samples from the warm chamber that same day and leave them exposed under ordinary
room conditions until the second day.
c) On the second day, store the samples in a cold chamber for 8 h at −30 °C.
d) Remove the samples from the cold chamber that same day and leave them exposed under ordinary room
conditions until the third day.
Repeat the procedure until the cycle (a,b,c,d) has been repeated 10 times.
8 © ISO 2011 – All rights reserved

ISO 6185-4:2011(E)
5.7.2.3 Tests for water absorption
The tests shall be carried out in fresh water and the sample shall be immersed for a period of seven days
under a 1,25 m head of water.
The tests shall be carried out
a) on two samples as supplied, and
b) on two samples which have been subjected to the temperature cycling as prescribed in 5.7.2.2, and
c) on six samples which have been subjected to the temperature cycling as prescribed in 5.7.2.2 followed by
the fuel resistance test prescribed in 5.7.2.4.
5.7.2.4 Fuel resistance test
The six samples to be tested shall be immersed horizontally for a period of 24 h at normal room temperature
under a 100 mm head of the following fuels:
⎯ two samples under diesel oil,
⎯ two samples under petrol, and
⎯ two samples under biofuel.
After this test, the samples shall show no sign of damage such as shrinking, cracking, swelling, dissolution or
change of mechanical qualities.
6 Functional components
6.1 Conditioning
All tests shall be performed at a temperature of (20 ± 3) °C unless stated otherwise in a cited International
Standard.
6.2 Buoyancy tube and hull fittings (items bonded to the buoyancy tube)
6.2.1 General
The materials and method of construction used shall be compatible with that of the buoyancy tube and hull
themselves. Any load-bearing fitting attached to the boat (see 3.1 and 3.2) shall not, when loaded as
described in 6.2.2, result in any impairment in airtightness or water integrity.
6.2.2 Test method
Any cordage used for test purposes shall have a diameter of 8 mm.
Gradually load the fittings in any direction up to the load specified in a) or b) and maintain this load for 1 min.
a) For strong points required by ISO 15084: in accordance with ISO 15084.
b) For all other attachments: 2 kN.
ISO 6185-4:2011(E)
6.3 Valves (if applicable)
6.3.1 Inflation
The assemblies shall be of corrosion-resistant materials and shall not be capable of damaging the boat
materials.
The type and arrangement of the inflation valves fitted to a RIB shall ensure the following:
a) the valves will be readily accessible for connection of the inflation device whether the boat is on land or in
the water;
b) the valves will not inconvenience the persons in their predetermined seating positions;
c) the valves will not interfere with the operation of the boat;
d) the valves will not interfere with loading and unloading of the boat;
e) the valves cannot be damaged or torn off by lines, safety ropes or movable components of the boat
construction or by normal movements of the passengers and load;
f) the valves are equipped with a cap that can independently seal the valve and the cap is connected to the
valve in a secure manner that prevents it from being accidentally lost;
g) a controlled reduction in buoyancy chamber pressure and of measuring that pressure is possible.
6.3.2 Deflation
Deflation of the buoyancy tube shall be by manual operation either by using the inflation valve or by using a
separate device.
Where separate devices are fitted, these shall be made of corrosion-resistant materials and shall not be
capable of damaging the boat material. The design and location of such devices shall meet the requirements
of 6.3.1 b) to e) inclusive.
The deflation of any one compartment shall not cause a loss of air or gas from any of the remaining
compartments.
6.4 Transom
The transom or motor mount and its attachment to the boat shall be designed to comply with ISO 12215-5 and
ISO 12215-6 and to withstand, under normal use, the maximum stresses arising from
⎯ the output power and torque of the motor(s), and
⎯ the mass of such motor(s).
6.5 Hull interior drainage
For boats fitted with an integral closed hull/cockpit assembly which is not filled with closed-cell foam or
equivalent, a drain plug shall be provided for draining water from the interior part of the hull (bilge). Means to
prevent the accidental discharge of oily waste shall be provided.
6.6 Remote steering system (where offered as standard or optional equipment)
Any remote steering system shall conform to at least one of the following International Standards: ISO 8847,
ISO 8848 and ISO 10592.
10 © ISO 2011 – All rights reserved

ISO 6185-4:2011(E)
For boats fitted with a single inboard engine and remote steering systems, a manual means of emergency
steering at reduced speed shall be provided.
Type X boats shall be fitted with a remote steering system approved by the boat manufacturer.
If remote steering and control consoles are fitted, these structures shall meet the strength requirements
of 7.16.
6.7 Towing, anchoring and mooring strong points
All boats shall have towing, anchoring and mooring devices in accordance with ISO 15084.
6.8 Seating and attachment systems (where offered as standard or optional equipment)
Seating shall be as defined in ISO 14946:2001, 3.2.
Where a seat structure or seat structures is/are supplied and permanently fitted to the boat by means of an
attachment system, the seat and the attachment system shall meet the strength requirements of 7.16. Seating
and handholds shall provide support for spinal neutral alignment and postural stability for each person up to
the crew limit and also to prevent them from falling or being thrown on deck or overboard (see also 7.10).
Buoyancy tubes shall not be used for seating areas.
Particular attention is also drawn to ISO 15085:2003, Clause 15.
6.9 Electrical installations (where offered as standard or optional equipment)
Any electrical installations shall conform to ISO 10133 or ISO 13297, as applicable.
6.10 Engine and engine spaces
6.10.1 Inboard engines
For boats fitted with an inboard engine or engines, these shall be installed in an enclosure separated from
living quarters in a manner to minimize the risk of fires and spread of fires as well as the hazards from toxic
fumes, heat, noise or vibration.
Parts of the engine that need frequent inspection and/or servicing shall be readily accessible.
The material used for sound insulation inside engine spaces shall present a non-fuel-absorbent surface
towards the engine, and shall not sustain combustion as specified in ISO 9094.
6.10.2 Fuel systems
Permanently-installed fuel systems and fixed fuel tanks shall conform to ISO 10088 and ISO 21487.
Type X boats shall be fitted with a permanent fuel system
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