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RULES FOR CLASSIFICATIONShipsEdition January 2018Part 3 HullChapter 11 Hull equipment, supportingstructure and appendagesThe 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

FOREWORDDNV 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 January 2018Any comments may be sent by e-mail to [email protected] 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.

This document supersedes the January 2017 edition of DNVGL-RU-SHIP Pt.3 Ch.11.Changes in this document are highlighted in red colour. However, if the changes involve a whole chapter,section or sub-section, normally only the title will be in red colour.Changes January 2018, entering into force as from date ofpublicationTopicModifcations to rules forcrane foundationReferenceDescriptionSec.2 [4.1.8]Increased bending moment due to heel and trim addressed.Sec.2 [4.1]The application is clarified.Sec.2 [4.5.2]It's clarified for which equipment design load for life savingappliances shall apply.Sec.2 [4.6]The acceptance criteria are modified and made more detailed byadding Sec.2 [4.6.3] and Sec.2 [4.6.4].Changes January 2018, entering into force 1 July 2018TopicIACS UR A3 - Anchor andWindlass Design and Testing- ImplementationReferenceSec.1 [6]DescriptionNumbering of subsection Sec.1 [6] completely changed.The numbering is:— Sec.1 [6.1] General design (Sec.1 [6.1.1] to Sec.1 [6.1.3])— Sec.1 [6.2] Materials (Sec.1 [6.2.1] to Sec.1 [6.2.3])— Sec.1 [6.3] Mechanical design (Sec.1 [6.3.1] to Sec.1 [6.3.6])— Sec.1 [6.4] Hydraulic system— Sec.1 [6.5] Electrical— Sec.1 [6.6] Testing (Sec.1 [6.6.1] to Sec.1 [6.6.3])— Sec.1 [6.7] Marking.Additional requirementSec.1 [6.3.4]Additional requirements for power operated brakes and for manualoperation of brake.Implementation of IACS URA1Sec.1 [1.3.1]Guidance note updated with new environmental criteria.Sec.2 [2.2]Paragraph added to align with UR A1.Sec.1 [3.1.1]Definition of A updated and new figure for calculation of sideprojected area added.Sec.1 [3.1.2]Definition of A updated to align with UR A1.Sec.1 [4.1]New paragraphs to define H.H.P. and S.H.H.P. anchors added.Sec.1 [4.5.1]Paragraph modified to include anchors of all sizes for proof testing.Sec.1 [4.5]New paragraph added for additional testing of S.H.H.P. anchors.Sec.1 [4.6.7]Paragraph modified to align with IACS, applicable for testing ofH.H.P. and S.H.H.P. anchors.Rules for classification: Ships — DNVGL-RU-SHIP Pt.3 Ch.11. Edition January 2018Hull equipment, supporting structure and appendagesDNV GL ASPage 3Part 3 Chapter 11 Changes - currentCHANGES – CURRENT

Implementation IACS UR A2Implementation IACS UR A3ReferenceDescriptionSec.1 [5.1.7]Additional requirement for use of wire rope included.Sec.2 [5.1.5]Modified paragraphs to include "other" towing, in line with UR A2.Sec.2 [5.1.8]Added new paragraph to define requirements for supportingstructure and shipboard fittings.Sec.2 [5.1]Added new paragraphs to define applicability of the subsection inline with UR A2.Sec.2 [5.3.1]Modified paragraph to include new requirements for shipboardfittings selected from an industry standard and to include "other"towing.Sec.2 [5.3.2]Modified paragraph to include new requirements for shipboardfittings not selected from an industry standard.Sec.2 [5.4.1]Modified text to align with UR A2.Sec.2 [5.4.3]Added figure showing sample arrangement, added text aboutalignment.Sec.2 [5.4.4]Added minimum requirement for the attachment point height andcorresponding figures.Sec.2 [5.4]Added paragraph referring to design loads.Sec.2 [5.5.1]Modified requirement for design load for mooring operations,"other" towing included.Sec.2 [5.5.2]Modified paragraph to define maximum brake holding load.Sec.2 [5.5.3]Modified text to align with UR A2, added new figure.Sec.2 [5.5.4]New paragraph added for requested higher SWL/TOW.Sec.2 [5.6]Subsection modified to be applicable for assessment with beamtheory or grillage analysis. New paragraph inserted to include FEanalysis.Sec.2 [5.7.3]Added new paragraph to include additional requirements for towingand mooring arrangement.Sec.2 [5.7]Title changed to include TOW, paragraph added about TOW.Sec.2 [5.8]New sub-section on corrosion addition and wear allowance added toalign with UR A2.Sec.1 [6.2.3]New paragraph regarding welding, welding procedures and welders.Sec.1 [6.3.1]Former paragraph [6.1.5]. Requirements regarding stresses intorque-transmitting components added.Sec.1 [6.3.1]Additional requirement regarding anchorage depth deeper than82.5 m.Sec.1 [6.3.1]"Guidance note" regarding anchor masses, normal lifting forces andhawse pipe efficiency added.Sec.1 [6.3.2]Former paragraph [6.1.5]. Requirements regarding dynamic effectsof sudden stopping and starting of the prime mover added.Rules for classification: Ships — DNVGL-RU-SHIP Pt.3 Ch.11. Edition January 2018Hull equipment, supporting structure and appendagesDNV GL ASPage 4Part 3 Chapter 11 Changes - currentTopic

Implementation of IACSRec.10Special consideration forbulwarks.ReferenceDescriptionSec.1 [6.3.3]Requirements regarding protection of mechanical parts added, i.e.overload protection. Also protection system to limit speed of primemover required.Sec.1 [6.3.3]Requirements regarding means to contain debris added.Sec.1 [6.4]Subsection regarding hydraulic systems added.Sec.1 [6.5]New subsection regarding "electrical" added.Sec.1 [6.6.2]Former subsection [6.3.2]. Requirements regarding acceptancetests added.Sec.1 [6.6.3]Former subsection [6.3.3]. Requirements regarding testing added.Sec.1 [6.7]Subsection regarding "marking" added.Sec.1 [2.1.1]Guidance note added for securing of stowed anchors.Sec.1 [1.3.3]New subsection describing guidance for mooring lines for ships EN 2000 added.Sec.1 [5.1.7]Additional requirement for use of wire rope included.Sec.1 [7]Deleted subsection.Sec.1 Table 1Sec.1 Table 1 modified for ships with EN up to 2000 with respectto mooring lines minimum breaking strength, new notes added tothe table regarding mooring lines. Values for mooring lines for shipswith EN 2000 deleted from Table 1.Sec.1 Table 2Sec.1 Table 2 modified with respect to mooring lines, to align withIACS Rec.10.Sec.3 [2.2.5]The requirement w.r.t. maximum distance between bulwark stay of2 m is not required by Load Line. Alternative solutions with largerdistance may be accepted based on special consideration.Editorial correctionsIn 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 2018Hull equipment, supporting structure and appendagesDNV GL ASPage 5Part 3 Chapter 11 Changes - currentTopic

Changes – current. 3Section 1 Anchoring, mooring and towing equipment.91 General. 91.1 Introduction. 91.2 Documents and certificates to be submitted.91.3 Assumptions for anchoring equipment. 92 Structural arrangement for anchoring equipment.102.1 General.103 Equipment specification. 113.1 Equipment number.113.2 Equipment tables. 163.3 Mooring lines for ships with EN 2000.184 Anchors.214.1 General.214.2 Materials. 214.3 Anchor shackle. 224.4 Manufacturing.224.5 Testing.224.6 Additional requirements for H.H.P. and S.H.H.P. anchors. 244.7 Identification. 255 Anchor chain cables.265.1 General requirements. 265.2 Materials and manufacture.295.3 Heat treatment. 295.4 Proof load testing. 305.5 Breaking load testing. 305.6 Mechanical testing. 345.7 Inspection and dimensional tolerances.365.8 Identification. 376 Windlass and chain stoppers. 386.1 General design. 386.2 Materials. 386.3 Mechanical design. 396.4 Hydraulic systems. 406.5 Electrical. 40Rules for classification: Ships — DNVGL-RU-SHIP Pt.3 Ch.11. Edition January 2018Hull equipment, supporting structure and appendagesDNV GL ASPage 6Part 3 Chapter 11 ContentsCONTENTS

Testing. 406.7 Marking. 41Section 2 Supporting structure for deck equipment and fittings. 421 General. 421.1 Application. 421.2 Documents to be submitted. 422 Anchoring windlass and chain stopper. 422.1 Application. 422.2 General.422.3 Design loads for anchoring operation. 432.4 Design loads for fore deck windlass against green sea. 432.5 Acceptance criteria.463 Heavy equipment, winches others than those used for mooring andtowing and other pulling accessories. 463.1 Application. 463.2 Materials. 463.3 Design loads. 473.4 Acceptance criteria.474 Cranes, A-frames, derricks, lifting masts and life savingappliances.474.1 Application and definition.474.2 General.494.3 Materials. 494.4 Structural arrangement.504.5 Design loads. 514.6 Acceptance criteria.525 Shipboard fittings and supporting hull structures associated withtowing and mooring. 535.1 Application and definitions. 535.2 Material. 545.3 Shipboard fittings. 545.4 Supporting hull structures.555.5 Design loads. 565.6 Acceptance criteria.575.7 Safe towing load (TOW) and safe working load (SWL). 585.8 Corrosion addition and wear allowance. 596 Miscellaneous deck fittings. 596.1 Support and attachment. 59Rules for classification: Ships — DNVGL-RU-SHIP Pt.3 Ch.11. Edition January 2018Hull equipment, supporting structure and appendagesDNV GL ASPage 7Part 3 Chapter 11 Contents6.6

1 General requirements. 601.1 Application. 601.2 Minimum height.602 Bulwarks. 602.1 General.602.2 Construction of bulwarks. 603 Protection of the crew. 623.1 Guard rails. 623.2 Gangways, walkways and passageways. 63Section 4 Appendages. 671 General. 671.1 Documents to be submitted. 672 Bilge keel. 672.1 Material, design and structural details. 673 Propeller nozzles. 703.1 General.703.2 Plating. 703.3 Nozzle ring stiffness. 713.4 Supports. 724 Propeller shaft brackets. 724.1 General.724.2 Arrangement. 724.3 Struts. 725 Elastic stern tube.735.1 General.735.2 Strength analysis. 73Changes – historic. 74Rules for classification: Ships — DNVGL-RU-SHIP Pt.3 Ch.11. Edition January 2018Hull equipment, supporting structure and appendagesDNV GL ASPage 8Part 3 Chapter 11 ContentsSection 3 Bulwark and protection of crew. 60

SymbolsFor symbols not defined in this section, see Ch.1 Sec.4.1 General1.1 Introduction1.1.1 The requirements given in this section apply to equipment and installation for anchoring, mooring andtowing.1.1.2 Towlines and mooring lines are not subject to classification. Lengths, breaking strength and number ofmooring lines are, however, given in the equipment tables as guidance.1.2 Documents and certificates to be submittedThe documents and certificates to be submitted are specified in Ch.1 Sec.3.1.3 Assumptions for anchoring equipment1.3.1 The anchoring equipment required is the minimum considered necessary for temporary mooring of avessel in moderate sea conditions when the vessel is awaiting berth, tide, etc. The equipment is thereforenot designed to hold a vessel off fully exposed coasts in rough weather or for frequent anchoring operationsin open sea. In such conditions the loads on the anchoring equipment will increase to such a degree thatits components may be damaged or lost owing to the high energy forces generated. The class notationDWA provides additional requirements for ships intended for regular anchoring at deep water, see Pt.6 Ch.5Sec.17.Guidance note:If the intended service of the vessel is such that frequent anchoring in open sea is expected, it is advised that the size of anchorsand chains is increased above the rule requirements, taking into account the dynamic forces imposed by the vessel moving inheavy seas. The equipment number (EN) formulae for anchoring equipment are based on an assumed m