ISO 17339:2002
(Main)Ships and marine technology — Sea anchors for survival craft and rescue boats
Ships and marine technology — Sea anchors for survival craft and rescue boats
ISO 17339:2002 specifies requirements for the design, performance and prototype testing of sea anchors fitted to survival craft (lifeboats and liferafts) and rescue boats in accordance with the IMO International Life-Saving Appliance Code.
Navires et technologie maritime — Ancres flottantes pour embarcations de sauvetage et canots de secours
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 17339
First edition
2002-11-15
Ships and marine technology — Sea
anchors for survival craft and rescue boats
Navires et technologie maritime — Ancres flottantes pour embarcations de
sauvetage et canots de secours
Reference number
ISO 17339:2002(E)
© ISO 2002
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ISO 17339:2002(E)
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ISO 17339:2002(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 3.
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 International Standard may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO 17339 was prepared by Technical Committee ISO/TC 8, Ships and marine technology,
Subcommittee SC 1, Lifesaving and fire protection.
©
ISO 2002 – All rights reserved iii
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INTERNATIONAL STANDARD ISO 17339:2002(E)
Ships and marine technology — Sea anchors for survival craft and
rescue boats
1 Scope
This International Standard specifies requirements for the design, performance and prototype testing of sea anchors
fitted to survival craft (lifeboats and liferafts) and rescue boats in accordance with the IMO International Life-Saving
Appliance Code.
2 Normative reference
The following normative document contains provisions which, through reference in this text, constitute provisions of
this International Standard. For dated references, subsequent amendments to, or revisions of, this publication do not
apply. However, parties to agreements based on this International Standard are encouraged to investigate the
possibility of applying the most recent edition of the normative document indicated below. For undated references,
the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of
currently valid International Standards.
1)
IMO International Life-Saving Appliance (LSA) Code
3 Term and definition
For the purposes of this International Standard, the following term and definition applies.
3.1
sea anchor
device to stabilize the motion and to reduce wind-driven drift of a waterborne craft
4 Design and performance criteria
4.1 A sea anchor shall generally be in the form of a cone or a truncated cone, as specified in Figure 1 and Table 1.
Alternative designs that meet all of the performance requirements of this International Standard may be accepted. A
sea anchor shall develop the minimum drag forces specified in Table 2, when tested in accordance with 5.2.
4.2 The fabric used in the construction of the sea anchor shall be porous and rotproof, and shall allow a water
2 2
penetration of between 100 l/s/m and 120 l/s/m when tested in accordance with 5.4.
4.3 The towing line used to secure the sea anchor to a survival craft or rescue boat shall be inherently rotproof and
of braided construction. It shall be at least 30 m long, not less than 8 mm in diameter and have a breaking load
including attachments and knots of not less than:
— 7,5 kN for liferafts of capacity up to 10 persons;
— 10,0 kN for liferafts of capacity 11 persons to 25 persons; or
— 10,0 kN for all other sea anchors, or have a safety factor of 3:1 based on a towing strain at 6kn, whichever is the
greater.
1) Available from the International Maritime Organization.
©
ISO 2002 – All rights reserved
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