dnvgl-ru-ship-pt5ch9 offshore service vessels 3 anchor handling and towing vessels ... rules for...

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  • The content of this service document is the subject of intellectual property rights reserved by DNV GL AS ("DNV GL"). The useraccepts that it is prohibited by anyone else but DNV GL and/or its licensees to offer and/or perform classification, certificationand/or verification services, including the issuance of certificates and/or declarations of conformity, wholly or partly, on thebasis 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 chargefrom http://www.dnvgl.com, is the officially binding version.

    DNV GL AS

    RULES FOR CLASSIFICATION

    ShipsEdition October 2015

    Part 5 Ship types

    Chapter 9 Offshore service vessels

  • FOREWORD

    DNV GL rules for classification contain procedural and technical requirements related to obtainingand retaining a class certificate. The rules represent all requirements adopted by the Society asbasis for classification.

    DNV GL AS October 2015

    Any comments may be sent by e-mail to rules@dnvgl.com

    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 shallpay compensation to such person for his proved direct loss or damage. However, the compensation shall not exceed an amount equal to tentimes 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.

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    Rules for classification: Ships DNVGL-RU-SHIP-Pt5Ch9. Edition October 2015 Page 3Offshore service vessels

    DNV GL AS

    CHANGES CURRENT

    This is a new document.

    The rules enter into force 1 January 2016.

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    Rules for classification: Ships DNVGL-RU-SHIP-Pt5Ch9. Edition October 2015 Page 4Offshore service vessels

    DNV GL AS

    CONTENTS

    Changes current...................................................................................................... 3

    Section 1 General....................................................................................................... 81 Introduction............................................................................................8

    1.1 Introduction.........................................................................................81.2 Scope................................................................................................. 81.3 Application.......................................................................................... 8

    2 Class notations....................................................................................... 82.1 Ship type notations.............................................................................. 82.2 Additional notations..............................................................................9

    3 Definitions............................................................................................ 103.1 Terms............................................................................................... 10

    4 Documentation......................................................................................114.1 Documentation requirements............................................................... 11

    5 Certification.......................................................................................... 145.1 Certification requirements....................................................................14

    6 Testing..................................................................................................166.1 Testing during newbuilding.................................................................. 16

    Section 2 Offshore service vessels........................................................................... 171 Introduction..........................................................................................17

    1.1 Introduction.......................................................................................171.2 Scope............................................................................................... 171.3 Application.........................................................................................17

    2 Hull....................................................................................................... 172.1 Loads................................................................................................172.2 Hull local scantling............................................................................. 182.3 Ships sides and stern.........................................................................182.4 Weather deck for cargo.......................................................................182.5 Stow racks........................................................................................ 192.6 Primary supporting members............................................................... 19

    3 Hull local scantling for ships assigned class notation Offshore servicevessel(+)..............................................................................................23

    3.1 Ship's sides and stern.........................................................................233.2 Bulwark.............................................................................................243.3 Support of heavy components............................................................. 24

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    3.4 Deckhouses and superstructures.......................................................... 253.5 Loading conditions..............................................................................26

    4 Systems and equipment....................................................................... 274.1 Steering gear.....................................................................................274.2 Exhaust outlets.................................................................................. 274.3 Anchoring equipment.......................................................................... 27

    5 Stability................................................................................................ 275.1 Stability manual................................................................................. 275.2 Loading conditions..............................................................................275.3 Icing................................................................................................. 285.4 Intact stability................................................................................... 28

    6 Openings and closing appliances.......................................................... 286.1 Weathertight doors............................................................................. 286.2 Freeing ports and scuppers................................................................. 286.3 Windows and side scuttles for ships assigned class notation Offshore

    service vessel(+).............................................................................. 29

    Section 3 Anchor handling and towing vessels........................................................ 321 Introduction..........................................................................................32

    1.1 Introduction.......................................................................................321.2 Scope............................................................................................... 321.3 Application.........................................................................................321.4 Testing requirements.......................................................................... 32

    2 Hull....................................................................................................... 332.1 Deck structure................................................................................... 332.2 Ships sides and stern.........................................................................34

    3 Systems and equipment....................................................................... 343.1 General............................................................................................. 343.2 Materials for equipment...................................................................... 343.3 Anchor handling and Towing winch....................................................... 353.4 Other equipment................................................................................ 363.5 Marking.............................................................................................36

    4 Stability................................................................................................ 364.1 General requirements......................................................................... 36

    Section 4 Platform supply vessels............................................................................371 Introduction..........................................................................................37

    1.1 Introduction.............................................................

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