ISO INTERNATIONAL STANDARD 21130 First edition 2019-04 Ships and marine technology Major components of emergency towing arrangements Navires et technologie maritime - Principaux éléments des dispositifs de remorquage d'urgence Reference number IS0 21130:2019(E) ISO @ IS0 2019 IS0 21130:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ ISO 2019 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: +4122 749 0111 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2019 - All rights reserved IS0 21130:2019(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references .1 3 Terms and definitions 4 Technical requirements. .2 4.1 Major components of ETA .2 4.2 Design arrangement of ETA .2 4.3 Design and manufacturing requirements for major components 3 4.3.1 MinimumstrengthreuirementforETAcomponents .3 4.3.2 Strength requirement for other parts. 3 4.3.3 BowETA .3 4.3.4 SternETA .5 5 Test method .7 5.1 Bow ETA .7 5.1.1 Prototype strength test for the bow ETA .7 5.1.2 Fairlead .7 5.1.3 Chain stopper .7 5.1.4 Chafing chain 8 5.1.5 Pedestal roller .8 5.2 Stern ETA. .8 5.2.1 Strength test forthe stern ETA .8 5.2.2 Fairlead 8 5.2.3 Towing rope .8 5.2.4 Stopper ring .9 5.2.5 Strong point .9 5.2.6 Storage container for the pick-up gear .9 5.2.7 Storage winch .9 5.3 Functiontest .9 Annex A (informative) Type and dimensions of a fairlead ..10 Annex B (informative) Chemical composition and mechanical properties of steel barsfor ship anchor chains .11 Annex C (informative) Types and dimensions of chafing chains ..12 Annex D (informative) Types and dimensions of chain stoppers .14 Annex E (informative) Type and dimensions of a towing rope ..17 Annex F (informative) Types and dimensions of fairleads/strong points ..18 Bibliography .19 @ IS0 2019 - All rights reserved iii