RULES FOR CLASSIFICATION Ships Edition January 2017 Part 3 Hull Chapter 11 Hull equipment, supporting structure and appendages The content of this service document is the subject of intellectual property rights reserved by DNV GL AS ("DNV GL"). The user accepts that it is prohibited by anyone else but DNV GL and/or its licensees to offer and/or perform classification, certification and/or verification services, including the issuance of certificates and/or declarations of conformity, wholly or partly, on the basis of and/or pursuant to this document whether free of charge or chargeable, without DNV GL's prior written consent. DNV GL is not responsible for the consequences arising from any use of this document by others. The electronic pdf version of this document, available free of charge from http://www.dnvgl.com, is the officially binding version. DNV GL AS FOREWORD DNV GL rules for classification contain procedural and technical requirements related to obtaining and retaining a class certificate. The rules represent all requirements adopted by the Society as basis for classification. © DNV GL AS January 2017 Any comments may be sent by e-mail to [email protected] If any person suffers loss or damage which is proved to have been caused by any negligent act or omission of DNV GL, then DNV GL shall pay compensation to such person for his proved direct loss or damage. However, the compensation shall not exceed an amount equal to ten times the fee charged for the service in question, provided that the maximum compensation shall never exceed USD 2 million. In this provision "DNV GL" shall mean DNV GL AS, its direct and indirect owners as well as all its affiliates, subsidiaries, directors, officers, employees, agents and any other acting on behalf of DNV GL. CHANGES – CURRENT t n e r This document supersedes the July 2016 edition. r Changes in this document are highlighted in red colour. However, if the changes involve a whole chapter, u c section or sub-section, normally only the title will be in red colour. - s Main changes January 2017, entering into force as from date of e publication g n a • Sec.1 Anchoring and mooring equipment h C — Sec.1 [3.1.2]: Projected area calculation for EN of mooring. A difference from IACS had been noted and is now corrected 1 1 — Sec.1 Table 10: Calculation of continuous duty pull. The requirement is aligned with IACS. r e • Sec.2 Supporting structure for deck equipment and fittings t p — Sec.2 [4.3]: The difference between requirement to offshore cranes and other cranes is clarified. a h C • Sec.3 Bulwark and protection of crew 3 — Sec.3 [2.2.10]: The reference to every frame is not found appropriate for bulwark in the bow area. The t text is deleted and replaced with a reference to the bow impact requirements for bulwarks. r a P Editorial corrections In addition to the above stated changes, editorial corrections may have been made. Rules for classification: Ships — DNVGL-RU-SHIP Pt.3 Ch.11. Edition January 2017 Page 3 Hull equipment, supporting structure and appendages DNV GL AS CONTENTS s t n e Changes – current.................................................................................................. 3 t n o Section 1 Anchoring and mooring equipment......................................................... 7 C 1 General................................................................................................ 7 1 1 1.1 Introduction..................................................................................... 7 r 1.2 Documents and certificates to be submitted.........................................7 e t 1.3 Assumptions.....................................................................................7 p 2 Structural arrangement for anchoring equipment................................7 a h 2.1 General........................................................................................... 7 C 3 Equipment specification.......................................................................9 3 3.1 Equipment number........................................................................... 9 t r 3.2 Equipment tables............................................................................ 13 a P 4 Anchors..............................................................................................15 4.1 General..........................................................................................15 4.2 Materials........................................................................................ 16 4.3 Anchor shackle............................................................................... 16 4.4 Manufacturing.................................................................................16 4.5 Testing...........................................................................................17 4.6 Additional requirements for H.H.P. and S.H.H.P. anchors...................... 18 4.7 Identification.................................................................................. 19 5 Anchor chain cables...........................................................................20 5.1 General requirements...................................................................... 20 5.2 Materials and manufacture...............................................................23 5.3 Heat treatment...............................................................................23 5.4 Proof load testing........................................................................... 24 5.5 Breaking load testing...................................................................... 24 5.6 Mechanical testing.......................................................................... 28 5.7 Inspection and dimensional tolerances...............................................30 5.8 Identification.................................................................................. 31 6 Windlass and chain stoppers............................................................. 32 6.1 General design............................................................................... 32 6.2 Materials........................................................................................ 33 6.3 Testing...........................................................................................33 7 Towlines and mooring lines...............................................................34 7.1 General..........................................................................................34 7.2 Materials........................................................................................ 35 Rules for classification: Ships — DNVGL-RU-SHIP Pt.3 Ch.11. Edition January 2017 Page 4 Hull equipment, supporting structure and appendages DNV GL AS 7.3 Testing of steel wire ropes............................................................... 36 s 7.4 Testing of natural fibre ropes........................................................... 38 t n 7.5 Mooring winches............................................................................. 39 e t n Section 2 Supporting structure for deck equipment and fittings........................... 40 o C 1 General.............................................................................................. 40 1.1 Application..................................................................................... 40 1 1 1.2 Documents to be submitted............................................................. 40 r e 2 Anchoring windlass and chain stopper.............................................. 40 t 2.1 Application..................................................................................... 40 p a 2.2 General..........................................................................................40 h C 2.3 Design loads for anchoring operation................................................ 40 3 2.4 Design loads for fore deck windlass against green sea......................... 41 t 2.5 Acceptance criteria..........................................................................44 r a 3 Heavy equipment, winches others than those used for mooring and P towing and other pulling accessories................................................... 44 3.1 Application..................................................................................... 44 3.2 Materials........................................................................................ 44 3.3 Design loads.................................................................................. 45 3.4 Acceptance criteria..........................................................................45 4 Cranes, A-frames, derricks, lifting masts and life saving appliances.............................................................................................45 4.1 Application and definition.................................................................45 4.2 General..........................................................................................47 4.3 Materials........................................................................................ 47 4.4 Structural arrangement....................................................................48 4.5 Design loads.................................................................................. 50 4.6 Acceptance criteria..........................................................................50 5 Shipboard fittings and supporting hull structures associated with towing and mooring............................................................................. 51 5.1