International ISO Standard IS015016 Ships and marine technology - Third edition 2025-02 Specifications for the assessment of speed and power performance by analysis of speed trial data Referencenumber Is015016:2025(en) @ISO2025 IS015016:2025(en) COPYRIGHTPROTECTEDDOCUMENT IS02025 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may the internet or an intranet, without prior written permission. Permission can be requested from either IsO at the address below orIso'smemberbody inthecountryoftherequester. ISO copyright office CP40i.Ch.deBlandonnet8 CH-1214 Vernier, Geneva Phone:+41227490111 Email:copyright@iso.org Website:www.iso.org Published in Switzerland @IS02025-All rights reserved ii IS015016:2025(en) Contents Page Foreword. V Introduction. .vi 1 Scope. 1 2 Normativereferences .1 3 Termsand definitions .1 4 Symbols and abbreviated terms. 4 4.1 Symbols. 4 4.2 Abbreviatedterms 8 5 Responsibilities. 9 5.1 Shipbuilder's responsibilities 5.2 Trial team. 10 6 Trial preparations 10 6.1 General .10 6.2 Step1:Installationandcalibration .10 6.3 Step 2: S/Ptrial agenda and pre-trial meeting .11 7 Ship conditions 11 7.1 Trim. 11 7.2 Displacementvolume 12 7.3 Hull, propeller, and shaft 12 8 Trial boundary conditions 13 8.1 General 13 8.2 Location 13 8.3 Wind. 13 8.4 Sea state. 15 8.5 Waterdepth .16 8.6 Current. .17 9 Trial procedure 17 9.1 General .17 9.2 Tank test information .18 9.3 Scope and conduct ofthe measurements 19 9.3.1 Shiptrack and speed overground .19 9.3.2 Torque 19 9.3.3 Wind .19 9.3.4 Waterdepth .19 9.3.5 Waves. .19 9.3.6 Water and air properties 20 9.3.7 Current 20 10 Conduct of the trial 20 10.1 General 20 10.2 Initiation. 20 10.3 Trajectory of ship during trial 20 10.4 Run duration and timing 21 10.5 Trial direction 21 10.6 Steering 22 10.7 Approach. 22 10.8 Power settings. 22 10.9 Number of speed runs 22 10.9.1 General 22 "Iterative"method. 22 10.9.2 10.9.3 "Mean of means"method 22 10.9.4 Sister ships 23 IS02025-All rights reserved ili

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