1、BRITISH STANDARD BS ISO 17339:2002 Ships and marine technology Sea anchors for survival craft and rescue boats ICS 47.080 BS ISO 17339:2002 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 8 August 2003 BSI 8 August 2003 ISBN 0 580 42412 X Nat
2、ional foreword This British Standard reproduces verbatim ISO 17339:2002 and implements it as the UK national standard. The UK participation in its preparation was entrusted by Technical Committee SME/32, Ships and marine technology, to Subcommittee SME/32/1, Ships and marine technology Lifesaving an
3、d fire protection, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue u
4、nder the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct a
5、pplication. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed
6、; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii and iii, a blank page, page 1 to 5 and a back cover. The BSI copyright notice displayed in this documen
7、t indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsINTERNATIONAL STANDARD ISO 17339 First edition 2002-11-15 Reference number ISO 17339:2002(E) OSI 2002 Ships and marine technology Sea anchors for survival craft and rescue boats Navires et techno
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13、wwsi.oc.h BSISO17339:2002ISO 33712002:9)E( ISO 2002 r llAithgs reservde iii 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
14、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 clo
15、sely 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
16、 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
17、 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. BSISO17339:2002ANRETNIITOTS LANDNADRA ISO 33712002:9)E( ISO 2002 r llAithgs reser
18、vde 1 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
19、 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
20、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
21、 ISO and IEC maintain registers of currently valid International Standards. IMO International Life-Saving Appliance (LSA) Code 1) 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 red
22、uce 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 a
23、ccepted. 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 penetration of between and when tested in accordance with 5.4. 4.3 The
24、 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 long, not less than in diameter and have a breaking load including attachments and knots of not less than: for liferafts of capacity up to 10 p
25、ersons; for liferafts of capacity 11 persons to 25 persons; or for all other sea anchors, or have a safety factor of 3:1 based on a towing strain at , whichever is the greater. 1) Available from the International Maritime Organization. 100 l/s/m 2 120 l/s/m 2 30 m 8 mm 7,5 kN 10,0 kN 10,0 kN 6kn BSI
26、SO17339:2002ISO :93371(2002)E 2 ISO 2002 Ar llithgr seresvde 4.4 The shroud lines shall be designed to restrict the sea anchor from tumbling through itself. 4.5 The sea anchor shall be stable when towed through the water at speeds up to . 4.6 The sea-anchor mouth shall open immediately on deployment
27、 from its packed condition and shall remain open. 4.7 The sea-anchor mouth shall be reinforced by a corrosion-resistant ring that regains its ring form regardless of the packed shape. Key 1 Shroud lines 2 Shroud length 3 Slope length 4 Mouth diameter, Figure 1 Sea-anchor geometry (typical) Table 1 D
28、esign criteria (typical) Craft Sea anchor Minimum shroud length Minimum mouth diameter, Minimum slope length mm mm mm Liferafts of capacity up to 10 persons 400 600 600 Liferafts of capacity 11 persons up to 25 persons 500 670 670 Liferafts of capacity 26 persons up to 75 persons 600 780 780 Lifeboa
29、ts and rescue boats up to in length Liferafts of capacity 76 persons up to 150 persons 700 920 920 Lifeboats and rescue boats over 6 m and up to in length Lifeboats over in length 800 1 050 1 050 D D 6m 9m 9m 6kn BSISO17339:2002ISO 33712002:9)E( ISO 2002 r llAithgs reservde 3 5 Prototype testing 5.1
30、 Deployment test A sea anchor, in its packed condition, with its full length of line shall be thrown into water, for example a swimming pool, or from a jetty into the sea. The mouth of the sea anchor shall open up immediately, and remain open. 5.2 Towing test 5.2.1 A fully deployed sea anchor shall
31、be towed over a distance of at least at a speed of to . The sea anchor shall be observed throughout the towing test and shall remain stable, not breaking through the surface of the water. On completion, the sea anchor and attachments shall be examined and shall not show any signs of deterioration or
32、 damage. 5.2.2 With a tension tester (e.g., load cell or spring balance) fitted in the tow line, the sea anchor shall again be towed over a distance of at least and the tensile force in the line recorded at speeds of , and . If there is a current running, the force shall be recorded in each directio
33、n and the mean taken. The drag force measured in the tow line shall comply with Ta b l e 2. 5.2.3 With a tension tester (e.g., load cell or spring balance) fitted in the tow line, the sea anchor shall be towed atfor at least or until a steady drag-force reading is obtained, whichever is longer. The
34、drag force measured in the tow line shall be not less than that specified in Ta b l e 2. The power to the boat shall then be cut. After the power shall be reapplied until the sea anchor is again being towed at or until a steady drag-force reading is obtained, whichever is longer. During the second a
35、nd subsequent test cycles, the drag-force measured in the tow line shall be not less than that specified in Ta b l e 2. This procedure shall be repeated until 20 cycles have been completed. At the end of 20 cycles, the sea anchor shall be examined. The sea anchor shall not be tangled in its shroud l
36、ines or turned inside out. 5.3 Strength test To demonstrate the strength of the sea anchor and its attachments to the shroud and towing line, the anchor shall be uniformly loaded internally with weight as indicated in Ta b l e 3. The sea anchor shall then be suspended by at leastof towing line for a
37、 period of . On completion, the anchor, shroud lines and all attachments shall be carefully examined and there shall not be any visible signs of any damage. 5.4 Porosity test The material used in the manufacture of the sea anchor shall be tested for porosity by attaching it to the open end of a pipe
38、 with internal diameter as shown in Figure 2. Water shall be supplied to the apparatus at a rate of . The test shall be carried out over at least and repeated five times using a different sample of material each time, the average value being taken as the flow rate. An accuracy of shall be considered
39、 acceptable. Table 2 Required drag force by craft type and size Craft Minimum required drag force at indicated speed Liferafts of capacity up to 10 persons Liferafts of capacity 11 persons up to 25 persons Liferafts of capacity 26 persons up to 75 persons Lifeboats and rescue boats up to in length L
40、iferafts of capacity 76 persons up to 150 persons Lifeboats and rescue boats over and up to in length Lifeboats over in length 1,5 kn 3 kn 6 kn 135 N 350 N 900 N 210 N 545 N 1,40 kN 303 N 785 N 2,00 kN 6m 410 N 1,07 kN 2,75 kN 6m 9m 9 m 540 N 1,40 kN 3,60 kN 500 m 1 kn 6 kn 500 m 1,5 kn 3 kn 6 kn 6k
41、n 20s 20 s 6kn 2m 6h 50 m 0,24 L/s 10 s 10 % BSISO17339:2002ISO :93371(2002)E 4 ISO 2002 Ar llithgr seresvde Table 3 Strength test by size Sea anchor for craft of indicated size Weight for strength test Liferafts of capacity up to 10 persons Liferafts of capacity 11 persons up to 25 persons Liferaft
42、s of capacity 26 persons up to 75 persons Lifeboats and rescue boats up to in length Liferafts of capacity 76 persons up to 150 persons Lifeboats and rescue boats over and up to in length Lifeboats over in length 900 N 1,4 kN 2,0 kN 6m 2,75 kN 6m 9m 9 m 3,6 kN BSISO17339:2002ISO 33712002:9)E( ISO 20
43、02 r llAithgs reservde 5 Dimensions in millimetres Key 1 Water-supply pipe 2 Hose clamp 3 Material under test 4 Calibrated 2,2 L container a Water flow b Surplus water discharge c Head of water equivalent to a speed of Figure 2 Test set-up to determine the porosity of the sea-anchor material 2kn BSI
44、SO17339:2002BS ISO 17339:2002 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charte
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