dnv ship rules pt.1 ch.1 - general regulations for classification of det norske veritas veritasveien...

RULES FORCLASSIFICATION OF

SHIPS

GENERAL REGULATIONS

PART 1 CHAPTER 1

GENERAL REGULATIONSJANUARY 2005This booklet includes the relevant amendments and corrections shown in the July 2005 version of Pt.0 Ch.1 Sec.3.

CONTENTS PAGE

Sec. 1 Classification Principles ............................................................................................................. 5Sec. 2 Scope of Rules and Class Notations........................................................................................... 8Sec. 3 Classification Procedure........................................................................................................... 15Sec. 4 Legal Provisions ....................................................................................................................... 21

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Veritasveien 1, NO-1322 Høvik, Norway Tel.: +47 67 57 99 00 Fax: +47 67 57 99 11

CHANGES IN THE RULES

General

The present edition of the rules includes amendments and additionsdecided by the Board as of November 2004 and supersedes the July2004 edition of the same chapter.

The rule changes come into force as described below.

This chapter is valid until superseded by a revised chapter. Supple-ments will not be issued except for an updated list of corrections pre-sented in Pt.0 Ch.1 Sec.3. Pt.0 Ch.1 is normally revised in January andJuly each year.

Revised chapters will be forwarded to all subscribers to the rules.Buyers of reprints are advised to check the updated list of rule chap-ters printed in Pt.0 Ch.1 Sec.1 to ensure that the chapter is current.

Main changes coming into force 1 July 2005

• Sec.2 Scope of Rules and Classification Notations

— Under sub-section element B600 Table B3, the new additionalnotations RC-1, RC-2, RC-3 and (X/Y) covering the carriage ofrefrigerated containers, have been added. The notations have

been introduced by the new Sec.10 of Pt.5 Ch.2 “Passenger andDry Cargo Ships”.

— Under sub-section element B700, Table B16 has been amendedto cover the new additional class notation DSV-SURFACE or -BOUNCE or -SAT (previous DSV-I SF or -II SF or -III SF), seeSec.4 of revised Pt.6 Ch.1 ”Miscellaneous Notations”.

— Under sub-section element B700, Table B26 has been amendedto cover the new additional class notation HMON (...) (previousHMON-1, HMON-2), see revised Pt.6 Ch.11”Hull MonitoringSystem”.

— Under sub-section element B700, Table B28 has been amendedas a consequence of the revision of Pt.6 Ch.13 “Gas Fuelled En-gine Installations”.

— Under sub-section element B700, a new Table B32 has been in-serted covering the new additional class notation NAUT-NAVYintroduced in the new chapter Pt.6 Ch.17 “Safety of Navigationfor Naval Vessels”.

Corrections and Clarifications

In addition to the above stated rule requirements, a number of correc-tions and clarifications have been made to the existing rule text.

Comments to the rules may be sent by e-mail to [email protected] subscription orders or information about subscription terms, please use [email protected] information about DNV and the Society's services is found at the Web site http://www.dnv.com

© Det Norske VeritasComputer Typesetting (FM+SGML) by Det Norske Veritas Printed in Norway

If any person suffers loss or damage which is proved to have been caused by any negligent act or omission of Det Norske Veritas, then Det Norske Veritas shall pay compensation to such personfor 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 compen-sation shall never exceed USD 2 million.In this provision "Det Norske Veritas" shall mean the Foundation Det Norske Veritas as well as all its subsidiaries, directors, officers, employees, agents and any other acting on behalf of DetNorske Veritas.

Amended, Rules for Ships, January 2005see Pt.0 Ch.1 Sec.3, July 2005 Pt.1 Ch.1 Contents –

CONTENTS

SEC. 1 CLASSIFICATION PRINCIPLES .................... 5

A. Definitions ..............................................................................5A 100 General ..............................................................................5A 200 Rules .................................................................................5A 300 Audits ................................................................................5

B. The Classification Concept...................................................5B 100 General ..............................................................................5B 200 Entering into force of the rules .........................................5B 300 Application of the rules.....................................................5B 400 Basis for assignment of class ............................................6B 500 Basis for maintenance of class ..........................................6B 600 Documentation ..................................................................6B 700 Disclosure of information .................................................7B 800 Limitation of the Society's responsibility .........................7B 900 Vertical contract audits and audits by

National Maritime Authorities ..........................................7

SEC. 2 SCOPE OF RULES AND CLASS NOTATIONS........................................... 8

A. Scope of Rules........................................................................8A 100 General .............................................................................8A 200 Application of the rules.....................................................8A 300 Rule particulars .................................................................8

B. Class Notations ......................................................................9B 100 General ..............................................................................9B 200 Construction symbols........................................................9B 300 Main character of class .....................................................9B 400 Service area notations .......................................................9B 500 Other service restrictions ..................................................9B 600 Additional class: Service and type notations ....................9B 700 Additional class: Equipment and systems notations .......12B 800 Additional class: Special features notations....................13B 900 National regulations ........................................................13B 1000 Additional class: NAUTICUS ........................................14

SEC. 3 CLASSIFICATION PROCEDURE ................. 15

A. Assignment of Class ............................................................15A 100 Request for classification................................................15A 200 Requirements for workshops and yards ..........................15

A 300 Requirements for manufacturers.....................................15A 400 Requirements for suppliers of services ...........................15A 500 Requirements for calibration of equipment ....................15A 600 Plan approval ..................................................................15A 700 Survey .............................................................................15A 800 Functional testing............................................................16A 900 Certification of materials, components and systems.......16A 1000 Manufacturing Survey Arrangement ..............................17A 1100 Type approval .................................................................17A 1200 Acceptance of control by National Authorities ..............17A 1300 Certificate of interim class ..............................................17A 1400 Classification certificate..................................................17A 1500 Appendix to the classification certificate........................17A 1600 Entry in the “Register of Vessels classed with DNV”....18A 1700 Decline of application for classification .........................18

B. Retention of Class............................................................... 18B 100 General ............................................................................18B 200 Periodical and renewal surveys.......................................18B 300 Survey of damage ...........................................................18B 400 Repairs ............................................................................18B 500 Procedures for maintenance............................................18B 600 Conversions and alterations ............................................18B 700 Change of ownership ......................................................19B 800 Conditions of Class and Memoranda..............................19B 900 Survey reports and survey status.....................................19B 1000 Rules for newbuildings applicable for ships in

operation .........................................................................19

C. Suspension and Withdrawal of Class ............................... 19C 100 General ............................................................................19C 200 Suspension of class .........................................................20C 300 Withdrawal of class.........................................................20C 400 Reclassification ...............................................................20

D. Appeals ................................................................................ 20D 100 Decisions taken by the Society .......................................20

SEC. 4 LEGAL PROVISIONS...................................... 21

A. Liability and Jurisdiction .................................................. 21A 100 Limited liability .............................................................21A 200 Governing law.................................................................21A 300 Venue ..............................................................................21

DET NORSKE VERITAS

Rules for Ships, January 2005 Amended,Pt.1 Ch.1 Contents – see Pt.0 Ch.1 Sec.3, July 2005

DET NORSKE VERITAS

Amended, Rules for Ships, January 2005see Pt.0 Ch.1 Sec.3, July 2005 Pt.1 Ch.1 Sec.1 –

SECTION 1 CLASSIFICATION PRINCIPLES

A. Definitions

A 100 General

101 For definition of general terms used in the rules, see Pt.0Ch.2 Sec.1 A200.

A 200 Rules

201 The Rules are to be understood as all those rule require-ments accepted by the Board as basis for classification, whichare developed by the Society or adopted from relevant Interna-tional Maritime Standards.

202 Tentative rules are rules applying to new fields to whichthe Society reserves the right to make adjustments during a pe-riod in order to obtain the intention reflected in the rules.

203 A Guidance note given in the rules is advice which is notmandatory for assignment of class, but with which the Society,in light of general experience, advises compliance, hence, it isfor the client to decide whether to apply the note or not.

204 Det Norske Veritas (DNV) is an autonomous and inde-pendent foundation with the object of safeguarding life, prop-erty and the environment.

DNV undertakes classification and certification and ensuresthe quality of ships, offshore units and installations, facilitiesand systems, and carries out research in connection with thesefunctions.

DNV operates a world wide network of survey stations and isauthorised by more than 120 national administrations to carryout surveys and, in most cases, issue certificates on their be-half.

205 The Society signifies DNV.

206 The Board signifies the Executive Board of DNVthrough its Chairman who is the President and CEO of DNV.

207 National authorities denotes the Administration of anycountry of registry.

208 Client means the party having requested classification orhaving assumed ownership of a classed ship. In cases whereowners have authorised another party to operate the ship ontheir behalf, such party is regarded as the client.

209 IMO is the International Maritime Organization.

210 IACS is the International Association of ClassificationSocieties.

211 A Recognised classification society means a classifica-tion society which is a full or associate member of IACS.

212 A Quality audit is a systematic and independent exami-nation to determine whether established work processes andquality systems are adhered to.

213 A Supplier or a Manufacturer, supplies materials, com-ponents, equipment and systems to newbuildings to be classed,or to classed ships in operation, whose production is subject todesign approval, surveys and testing in accordance with therules.

A 300 Audits

301 A vertical contract audit is an IACS audit which assess-es the correct application of the quality system through audit ofthe process for a specific contract.

A contract is the specific agreement between the Society andthe client. It defines the extent of services requested by the cli-ent, and is concerned with:

— the classification of ships, both newbuildings and in oper-ation

— statutory work carried out on behalf of National MaritimeAuthorities

— equipment and materials for ships.

The IACS QSCS (Quality System Certification Scheme) auditteam is responsible for carrying out these audits.

B. The Classification Concept

B 100 General101 The classification concept comprises the developmentof independent technical standards for ships, and the verifica-tion of compliance with these standards throughout the ships'life.

102 The rules are aimed at ensuring safety against hazards tothe ship, personnel, passengers and cargo, and against hazardsto the environment as a consequence of sea transport.

103 The classification of ships is performed in accordancewith the requirements of the rules and any other standards towhich reference is made.

104 Having assigned class, the society will issue a classifica-tion certificate and enter the main particulars and details ofclass for the ship in the “Register of Vessels classed withDNV”.

B 200 Entering into force of the rules201 Rules and amendments accepted by the Board will comeinto force when decided by the Board, normally six (6) monthsafter acceptance.

Guidance note:The date on which rule changes come into force is shown on theinside of the cover of new rule chapters (booklets) and revisedchapters if they are reprinted. The coming into force date for rule changes concerning chapterswhich are not reprinted, but where the changes are published inPt.0 Ch.1 Sec.3, is shown on the inside of the cover of Pt.0 Ch.1and is also explained and shown in Pt.0 Ch.1 Sec.3 B101.

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202 In exceptional cases, where unacceptable service expe-rience and or theoretical findings clearly show that safety haz-ards may arise in connection with items covered by the existingrules, the Board may decide to lay down at any time supple-mentary requirements concerning the assignment and retentionof class to maintain the overall safety standard reflected by therules.

203 If an amendment is made mandatory to ships under con-struction or which have already been assigned class, this willbe specially stated, see 201.

B 300 Application of the rules301 The applicable rules for assignment of class to a newship are those in force at the date (as given to the Society by theclient) when the contract between the owner and the shipyardis signed.

302 Subsequent amendments not made mandatory accordingto 203 may be made applicable to ships under construction pro-vided both builder and owner agree to such application.

303 Ships which undergo conversions or alterations shallcomply with Sec.3 B604.

DET NORSKE VERITAS

Rules for Ships, January 2005 Amended,Pt.1 Ch.1 Sec.1 – see Pt.0 Ch.1 Sec.3, July 2005

304 Ships in operation shall comply with the rules for new-buildings to the extent specified in Sec.3 B1000.

305 The Society will consider alternatives found to representan overall safety standard equivalent to that of the rules. Ap-proval may be revoked if subsequent information indicates thatthe chosen alternative is not satisfactory.

306 In cases where detailed requirements are not given in therules, specific solutions or decisions approved by the Societyand its surveyors are to be based on the principles of the rules,and are to give a safety standard equivalent to that of the rules.

307 In accordance with 305 the Society may consider the useof reliability methods as a means of documenting complianceto class requirements. For applications to hull structures, seePt.3 Ch.1 Sec.3 B1000.

308 Text adopted from International Maritime Standards isidentified by relevant reference.

B 400 Basis for assignment of class401 Having assigned a specific class implies that the Socie-ty:

— has been satisfied that the ship meets the rule requirementsfor the particular class

— will, through a system of surveys, verify that the require-ments stipulated for retention of class are complied with.

402 Prior to assigning class to an eligible, existing ship, it isin general to undergo all periodical surveys pertaining to theage and type of the ship. See Sec.3 A705.

403 When assigning class to a ship which has not been builtunder supervision of the Society, provided the ship has beenbuilt under supervision of another recognised classification so-ciety, the Society may on the basis of an overall safety consid-eration, in connection with a design review and survey, exemptit from rule requirements for the main class. See also 305.

404 When assigning class to a ship of a series under con-struction to the classification of, or a design previously accept-ed by, a recognised classification society, the Society may onthe basis of an overall safety consideration, in connection with

a design review, exempt it from the rule requirements for themain class, and base the survey on the design approval done bythe recognised society. A note to this effect may be included inthe Appendix to the classification certificate.

405 When assigning class to a ship for which the Adminis-tration of the flag state undertakes approval and surveys ofitems covered by the rules, the Society may accept their deci-sions as basis of assigning class.

406 For ships permanently moored on location and intendedfor production and storage of hydrocarbons, the Society mayalso accept decisions by the National Authority with jurisdic-tion over the waters in which the ship is to operate (shelf state)as basis for assigning class.

B 500 Basis for maintenance of class

501 The requirements for retention of class are found inSec.3 B. In addition, classification is based on the following:

Valid statutory certificates

The statutory certificates of the applicable international con-ventions shall be valid at all times, and the surveys prescribedin the conventions shall be carried out within the time windowsprescribed.

Maintenance of the ship and its equipment

It is assumed that the ship, machinery installations and equip-ment are to be maintained at a standard complying with the re-quirements of the rules.

Installed systems or equipment carried on board in excess ofthe rule requirements, but otherwise covered by the rules, areeither to be maintained in accordance with the rules, or be re-moved or be disconnected in such a way as to ensure that theinstalled system or equipment cannot be used.

Handling of the ship

It is assumed that the ship, machinery installations and equip-ment are to be adequately manned and competently handled.This includes also stowage of cargo, distribution of ballast andbunkers, and speed and navigation in heavy weather. Classconditions regarding the use of the ship are to be observed.

B 600 Documentation601 All information which may influence the judgement, de-cisions and requirements of the Society for the purpose of clas-sification, is to be made available to the Society. It is theclient's responsibility to ensure that such information is

brought to the attention of the Society in a timely manner. In-formation may be made available by submitting documents tothe Society or by surveys performed at the clients premises, theship or the premises of the client's sub-contractors.

Table B1 Disclosure of informationInformation in question: Owner Flag Administration Port State

AuthorityInsurance

Company *Yard or

suppliersNewbuildings:

a) Approved "as carried out" structure related drawings2) 1) 4)

b) Approved "as carried out" system and component drawings 2) 2) 2)

Ships in Operation:

a) Class and statutory certificates issued by the Society 4) 1) 1) 3)

b) Survey and certificate status including text of Conditions of Class 4) 4) 1) 1) **

c) Survey reports 4) + 1) 1) 2) + 5) 3)Other information: Correspondence with yard or owner 2) 2) 2) 2)1) Upon request

2) When accepted by owner or ship yard and copyright holder as applicable

3) When accepted by owner or through special clause in insurance contract

4) Automatically available

5) Upon request, with background information, reports pertinent to the inspection, and details of outstanding conditions of class and statutory items

* Insurance Company means P&I Clubs and Hull & Machinery Underwriters** Overdue Conditions of Class, only

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602 Documents for information or approval required in eachchapter of the rules are to be submitted to the Society.

603 The documentation forming the basis for classificationis, at all times, to reflect the true conditions. Revisions of doc-uments are therefore to be submitted to the Society to the ex-tent such revisions may influence decisions and requirementsof the Society.

B 700 Disclosure of information

701 The Society will not disclose any information receivedor reports made in connection with classification to any otherthan those entitled thereto or those having been given the rightto receive information by legislation, court decision or by writ-ten permission by the owner. The supply of information maytake place electronically and on a continual basis, e.g. by on-line access to the Society's databases.

Guidance note:Table B1 indicates which parties will be entitled to various kindsof information.


702 The Society will not disclose information that can beconsidered as the property of another party except when thisparty's permission is given in writing.

703 Internal communication, notes, calculations etc. pro-duced within the Society in connection with classification willnot be disclosed to other parties.

704 Notwithstanding 701 to 703, authorised representativesof the maritime Administration or of the audit team of IACSperforming quality audits, will have access to such informa-tion. These representatives are to confirm in writing that theyare not in any manner allowed to reproduce or communicatesuch information to other parties.

705 Notwithstanding 701 and 703 the Society may discloseany information to a police authority upon a written request bythe same.

706 The Society may release information on required classand statutory surveys and schedules, delegated statutory certi-fication, overdue surveys and overdue conditions and classsuspensions and deletions.

B 800 Limitation of the Society's responsibility801 The classification service is performed on the basic as-sumption that other parties involved (building yard, designers,manufacturers, sub-contractors, shipowners, etc.) fulfil theirindividual obligations. The classification service is not per-formed in substitution of other parties' role or obligations.Nothing contained herein or in any certificate, report or docu-ment issued in connection with or pursuant to these rules, shallrelieve any designer, engineer, builder, manufacturer, ship-yard, seller, supplier, owner, operator or other parties from anyobligations or consequences of default whatsoever. In particu-lar, compliance with the rules does not imply acceptance orcommissioning of a ship. This is the exclusive responsibility ofthe owner.

Any document issued by the Society in relation to surveys per-formed reflects the condition of the ship at the time of survey.It is the responsibility of the owner to maintain the conditionof the ship as required by the rules between surveys.

B 900 Vertical contract audits and audits by National Maritime Authorities901 For the purpose of conducting vertical audits performedby the audit team of IACS, and audits performed by the Na-tional Maritime Authorities of the flag state, access is to beprovided to the ship and/or to the premises of manufacturer orshipbuilder, as appropriate.

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SECTION 2 SCOPE OF RULES AND CLASS NOTATIONS

A. Scope of Rules

A 100 General 101 The rules define acceptance criteria for design, construc-tion, survey and testing of ships, their machinery installations,systems and equipment, applicable to the newbuilding and op-erational phases.

A 200 Application of the rules201 The present part of the rules, Pt.1, applies to all ships,newbuildings as well as ships in operation.

202 The rules for main class which apply to all newbuildingsare given in Pt.2, 3 and 4.

In addition to the main class requirements some special featureadditional class notations are also covered in these parts.

203 The rules for additional class notations applicable tonewbuildings, not covered by main class, are given in Pt.5 and6. Additional class notations apply to:

— ships which have been designed to carry special cargoes orperform a special service

— special equipment and systems not covered by the mainclass

— special features not covered by other notations.

204 The rules for ships in operation are given in Pt.7.

A 300 Rule particulars

301 The rules give requirements in the following areas:

Table A1 Areas covered by the rulesHull

— strength— structural fire protection— weathertight and watertight integrity— stability and floatability— tank arrangementMachinery installations and equipmentMachinery installations and equipment, including their related aux-iliary functions, with respect to strength and performance as appli-cable to the following main functions:

— power generation— propulsion— steering— fire safety— drainage and bilge pumping— ballasting— cargo handling, with the exception of lifting and dry cargo han-

dling appliances such as cranes and derricks (with sheaves, blocks, wire ropes, winches and loose lifting gear) and lifting gear for cargo ramps and hoistable decks. For ships with addi-tional class notation Crane Vessel or CRANE such applianc-es are subject to classification

— anchoring.

Certain machinery installations, regardless of their contribution to the main functions stated above:

— electric power plant— gravity tanks or pressure vessels and associated piping systems

for:

— toxic fluids— fluids with flash point below 100°C— fluids with temperatures above 220°C— boilers and steam piping systems— pressure vessels and associated piping systems for com-

pressed gases where pV ≥ 150 kNmp = design pressure in kN/m2

V = pressure vessel volume in m3

— firing and combustion installations— other installations stated in the rules.Life-saving appliances and arrangementsInternal communicationsCarriage of dangerous goods

— dangerous goods in packaged form or in solid form in bulk— construction and equipment of ships carrying dangerous liquid

chemicals in bulk— construction and equipment of ships carrying liquefied gases in

bulk.Pollution prevention

— by oil— by noxious substances in bulk— by harmful substances.Management of safety and environmental protection (SEP)

— safety management systems.

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B. Class Notations

B 100 General101 All ships will be given a main class notation consistingof a construction symbol, a main character of class, and whereapplicable, a service area restriction notation, e.g.:

1A1or

1A1 R2102 Ships also found to satisfy relevant requirements may begiven additional class notations related to special service andtype of ship, special systems and equipment or to special fea-tures.

The complete class notation will thus consist of (as exempli-fied):

1A1 R2 Tanker for Oil ESP E0 ETCMain class notations:

— Construction symbol1A1 — Main character of classR2 — Service area notation

Additional class notations:

B 200 Construction symbols201 The symbol will be given to ships built under the su-pervision of DNV.

202 The symbol will be given to ships built under the su-pervision of a recognised classification society and later as-signed class with DNV. See Sec.1 B403.

B 300 Main character of class301 The notation 1A1 will be given to ships with hull ma-chinery and equipment found to be in compliance with the rulerequirements stated in Pt.1, 2, 3 and 4.

B 400 Service area notations401 The notation R followed by a number or a letter will begiven to ships with certain modifications to arrangement,equipment or scantlings in relation to ships normally built forwinter weather conditions in the North Atlantic.

The service area restrictions given in nautical miles and repre-senting the maximum distance from nearest harbour or safe an-chorage are given in Table B1. For the various servicenotations the restrictions are related to the zones, areas and sea-sonal periods as defined in the International Convention onLoad Lines, 1966, Annex II.

The service notation RE is limited to enclosed waters such asfjords, harbours, rivers and smaller lakes.

The service area restrictions as related to the given service areanotation are to be included in the “Appendix to the classifica-tion certificate”.

402 Modified requirements related to the various servicearea notations are given in the relevant sections of the rules.The modifications will affect:

— design hull girder loads— design pressures on shell, weather decks, superstructures

and deckhouses— anchoring and mooring equipment— arrangement— stability.

B 500 Other service restrictions

501 Other service restrictions or operational limits includedin the design assumptions of a ship will be stated in the appen-dix to the classification certificate, and/or on special sign-boards.

502 Modified rule requirements are in addition given relatedto the size of the ship and its general arrangement in:

B 600 Additional class: Service and type notations

601 Ships arranged and or strengthened for a special serviceand found to be in accordance with relevant requirements inPt.5 will be given a corresponding additional class. Service andtype notations currently in use are given in Tables B2 to B15.

602 Only brackets in bold type are to be included in class no-tations.

603 The following type and service notations are defined asmandatory class notations:

Bulk Carrier ESPBulk Carrier ESP ES(..)Ore Carrier ESPOre Carrier ESP ES(O)Tanker for Oil ESPTanker for Oil Products ESPBulk Carrier or Tanker for Oil ESPOre Carrier or Tanker for Oil ESPTanker for Chemicals ESPTanker for C * ESPTanker for Liquefied GasTanker for Compressed Natural GasPassenger ShipCar Ferry A (or B)Train Ferry A (or B)Car and Train Ferry A (or B)

Tanker for Oil ESP — Service and type notationE0 — Equipment and systems notationETC — Special feature notation

✠

✠

✠

✠

✠

✠·

Table B1 Service area restrictionsService area

notationsSeasonal zones

Winter Summer TropicalR0 250 No restrictions No restrictionsR1 100 200 300R2 50 100 200R3 20 50 100R4 5 10 20RE Enclosed waters

Pt.3 Ch.1 Sec.1Pt.3 Ch.2 Sec.1 regarding definition of length (barge/push-tug)

Pt.3 Ch.1 Sec.3Pt.3 Ch.2 Sec.3 regarding subdivision

Pt.3 Ch.1 Sec.5Pt.3 Ch.2 Sec.5 regarding hull section modulus

Pt.3 Ch.1 Sec.13 regarding connection barge and push-tugPt.3 Ch.3 Sec.3 regarding anchoring and mooring equipment

Pt.4 Ch.6 Sec.4 regarding bilge pumping for vessels less than 100 gross tonnage

Pt.4 Ch.8 Sec.3 regarding electrical installations (outside tropical waters)

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The detailed specifications of these ship types are given in Pt.5.

Table B2 Ships arranged for navigation in ice (Pt.5 Ch.1):ICE-C basic ice ruleICE-1A* Baltic ice rulesICE-1A Baltic ice rulesICE-1B Baltic ice rulesICE-1C Baltic ice rulesICE-1A* F ice strengthening of high powered

ships for regular traffic in heavy iceICE-05 (or -10 or -15) Arctic ice rulesPOLAR-10 (or -20 or -30) Arctic ice rulesIcebreaker Arctic ice rulesSealer

Table B3 Passenger and dry cargo vessels (Pt.5 Ch.2):Passenger Ship non ro-ro passenger ships, mandatoryCar Ferry A (or B) ro-ro passenger ships, mandatoryTrain Ferry A (or B) ro-ro passenger ships, mandatoryCar and Train Ferry A (or B)

ro-ro passenger ships, mandatory

General Cargo Carrier dry cargo shipsBulk Carrier dry cargo shipsBulk Carrier ESP dry bulk cargoes, mandatoryOre Carrier ESP ore cargoes in centre holds,

mandatoryBulk Carrier ESP ES(..) dry bulk cargoes, mandatoryOre Carrier ESP ES(O) ore cargoes in centre holds,

mandatoryContainer Carrier dry cargo shipsCar Carrier dry cargo shipsX Carrier ships specialised for the carriage of a

single type of dry cargoA = vehicles on enclosed decksB = vehicles on weather deck onlyESP = enhanced survey programmeES(S) = single side skin bulk carriers with enhanced strengthES(D) = double side skin bulk carriers with enhanced strengthES(O) = ore carriers with enhanced strengthX = denotes the type of cargo to be carried, e. g. Alumina,

Cement, Sugar etc.

Additional notations:

RO/RO = roll on/roll off shipsCONTAINER = arranged for carriage of containersBC-C = designed to carry dry bulk cargoes of cargo den-

sity less than 1.0 t/m3

BC-B = designed to carry dry bulk cargoes of cargo den-sity 1.0 t/m3 and above with all cargo holds loaded in addition to BC-C conditions

BC-A = designed to carry dry bulk cargoes of cargo den-sity 1.0 t/m3 and above with specified holds empty, at maximum draught in addition to BC-B conditions.

BC-B* = designed to carry dry bulk cargoes of density 1.0 t/m3 and above with any hold empty at max-imum draught, applicable to double hull vessels and general cargo carriers

HC-A = designed to carry dry bulk cargoes of cargo den-sity 1.0 t/m3 and above with specified holds empty, at maximum draught in addition to HC-B conditions. Not applicable for bulk carriers with length more than 150 m.

HC-B = designed to carry dry bulk cargoes of cargo den-sity 1.0 t/m3 and above with all holds loaded in addition to HC-C conditions. Not applicable for bulk carriers with length more than 150 m.

HC-C = designed to carry dry bulk cargoes of cargo den-sity less than 1.0 t/m3. Not applicable for bulk carriers with length more than 150 m.

HC-B* = designed to carry dry bulk cargoes of cargo den-sity 1.0 t/m3 and above with any holds empty at maximum draught, applicable for double hull vessels and general cargo carriers. Not applica-ble for bulk carriers with length more than 150 m.

MCDK = arranged with movable car decksPET = arranged for carriage of cars with fuel in their

tanksRC-1 = vessels for carriage of refrigerated container

containing mainly chilled cargoRC-2 = vessels for carriage of refrigerated containers

containing both frozen and chilled cargoRC-3 = vessels for carriage of refrigerated containers

containing mainly deep frozen cargoes(X/Y) = meaning that the vessel may carry X reefer con-

tainers on deck and Y in the holds

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Table B4 Oil carriers (Pt.5 Ch.3):Tanker for Oil ESP mandatoryTanker for Oil Products ESP mandatoryBulk Carrier or Tanker for Oil ESP

mandatory

Ore Carrier or Tanker for Oil ESP

mandatory

Tanker for C *Additional notations:

BOW LOADINGSTL= submerged turret loadingSPM = single point mooring

Table B5 Chemical carriers (Pt.5 Ch.4):Tanker for Chemicals ESP mandatoryTanker for C ESP ** mandatoryTanker for C ** C = specified cargo** The additional class notation ESP is mandatory for self pro-

pelled ships intended for carriage of liquid chemicals in bulk in accordance with IMO's International Code for the Construction and Equipment of Ships carrying Dangerous Chemicals in Bulk (IBC Code), or Code for the Construction and Equipment of Ships carrying Dangerous Chemicals in Bulk (BCH Code), as applicable.

Table B6 Liquefied gas carriers (Pt.5 Ch.5):Tanker for Liquefied Gas mandatoryTanker for C ** C = specified cargo

Table B7 Fishing vessels (Pt.5 Ch.6):Fishing Vessel (S)Stern Trawler (S)Fishing Vessel (S)(N)Stern Trawler (S)(N)S = arranged with shifting boards in cargo holds(N) = vessel also complying with the requirements of the Norwe-

gian Maritime Directorate

Table B8 Tugs, escort vessels, supply vessels, and other offshore or harbour vessels (Pt.5 Ch.7):TugEscort (n,V) or (n,8 n,10)Supply VesselSupply Vessel SFSupply Vessel BasicSupply Vessel Basic SFStandby VesselStandby Vessel (S)Fire Fighter I or Fire Fighter II or Fire Fighter III or Fire Fighter I and II or Fire Fighter I and IIIPipe Laying VesselCable Laying VesselCrane VesselDredgerWell Stimulation VesselWell Stimulation BargePusher or Pusher and Pusher/Barge UnitBargeBarge for OilBarge for Liquefied GasBarge for Deck Cargo(n,V) = escort rating numbern = transverse steering pull in tonnesV = the speed at which the pull may be attainedOILREC = recovered oil reception and transportationSF = controlled stability and floatabilityBasic = applicable to offshore supply vessels not strength-

ened to regularly operate in the North Sea but pri-marily operate in less severe offshore environments such as: South East Asia, Africa and Brazil.

LFL = low flashpoint (< 60°C) liquidLFL* = low flashpoint (< 43°C) liquid

Table B9 Slop reception and processing facilities (Pt.5 Ch.8):Slop Reception and Processing Facility

Table B10 Ships for carriage of refrigerated cargoes (Pt.5 Ch.10):Reefer(...°C/...°C sea) refrigerated cargoes main purposeRM(...°C/...°C sea) refrigeration plant, partial carriage and

fishing vesselsRM(Container) refrigerated containersCA controlled atmosphere in cargo cham-

bersCA(port.) controlled atmosphere in cargo cham-

bers with partly portable equipmentRefrigerated Fruit Juice Carrier

bulk transport in refrigerated tanks

Table B11 Ships arranged for carriage of dangerous goods (Pt.5 Ch.11):DG-B arranged for dangerous solid

bulk cargoesDG-P arranged for dangerous goods in

packaged form

Table B12 Ships with controlled environmental standards (Comfort Class) (Pt.5 Ch.12):COMF-V(crn) (or -C(crn) or -V(crn)C(crn))V = noise and vibrationC = indoor climatecrn = comfort rating number, 1, 2 or 3, where 1 is best.

Table B13 Ships for carriage of potable water (Pt.5 Ch.13)Tanker for Potable Water

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B 700 Additional class: Equipment and systems nota-tions701 Ships having special equipment or systems found to sat-isfy relevant requirements in Pt.6, will be given a correspond-ing additional class. Equipment and systems notationscurrently in use are given in Tables B16 to B34.

Table B14 Naval vessels (Pt.5 Ch.14):NavalNaval SupportNaval Support (....)hull = additional naval requirements for arrangements as

given in Pt.5 Ch.14 Sec.2, loads in Pt.5 Ch.14 Sec.3 and hull strength in Pt.5 Ch.14 Sec.4 have been ap-plied

stab = naval requirements for stability as given in Pt.5 Ch.14 Sec.5 have been applied

system = additional naval requirements for piping as given in Pt.5 Ch.14 Sec.6, machinery in Pt.5 Ch.14 Sec.7, electrical in Pt.5 Ch.14 Sec.8, control and monitor-ing in Pt.5 Ch.14 Sec.9 have been applied

fire = additional naval requirements for fire safety as given in Pt.5 Ch.14 Sec.10 or 11 have been applied

evac = naval requirements for safe evacuation as given in Pt.5 Ch.14 Sec.12 have been applied

radhaz = naval requirements for radiation hazards as given in Pt.5 Ch.14 Sec.13 have been applied

emc = naval requirements for electromagnetic compatibili-ty as given in Pt.5 Ch.14 Sec.14 have been applied

sam = naval requirements for storage rooms for ammuni-tion as given in Pt.5 Ch.14 Sec.15 have been applied

F-NAVAL additional fire protection requirements, as given in Pt.5 Ch.14 Sec.11 I, have been applied

Table B15 Compressed Natural Gas Carriers (Pt.5 Ch.15):Tanker for Compressed Natural Gas

compressed natural gas carriersmandatory

Table B16 Miscellaneous notations (Pt.6 Ch.1):HELDK(-S or -SH or -SHF) helicopter deckCRANE shipboard craneDEICE equipment with deicing or anti-

icing systemsDEICE-C equipment with deicing or anti-

icing systems including cargo deck area

DSV-SURFACE (or -BOUNCE or -SAT)

diving system

OPP-F oil pollution prevention - fuel systems

S = ship safety requirementsSH = ship and helicopter safety requirementsSHF = ship and helicopter safety requirements and on board

helicopter service facilitiesSF = intact and damage stability

Table B17 Redundant propulsion (Pt.6 Ch.2):RP redundant propulsionRPS separate redundant propulsion

Table B18 Periodically unattended machinery space (Pt.6 Ch.3):E0 unattended machinery spaceECO machinery centralised operated

Table B19 Additional fire protection (Pt.6 Ch.4):F-A for accommodation spaceF-M for machinery spaceF-C for cargo space

F-AM for accommodation and machin-ery space

F-AC for accommodation and cargo space

F-MC for machinery and cargo space

F-AMC for accommodation, machinery and cargo space

Table B20 Integrated computer systems (Pt.6 Ch.5):ICS

Table B21 Centralised cargo control for liquid cargoes (Pt.6 Ch.6):CCO

Table B22 Dynamic positioning systems (Pt.6 Ch.7):

DYNPOS-AUTS dynamic positioning system without redun-dancy

DYNPOS-AUTdynamic positioning system with an inde-pendent joystick back-up and a position ref-erence back-up

DYNPOS-AUTRdynamic positioning system with redundan-cy in technical design and with an independ-ent joystick back-up

DYNPOS-AUTRO

dynamic positioning system with redundan-cy in technical design and with an independ-ent joystick back-up. Plus a back-up dynamic positioning control system in an emergency dynamic positioning control centre, designed with physical separation for components that provide redundancy

Position mooring systems (see Offshore Standard DNV-OS-E301)POSMOOR passive position mooring system

POSMOOR-V mooring system designed for positioning in vicinity of other structures

POSMOOR-TA thruster assisted mooring system dependent on manual remote thrust control system

POSMOOR-ATA thruster assisted mooring system dependent on automatic remote thrust control system

V = mooring in vicinity of other structuresTA, ATA = mooring systems designed for thruster assisted

mooring.

Table B23 Nautical Safety (Pt.6 Ch.8):

NAUT-OCbridge design, workstation arrangement, range and location of equipment(ocean areas and coastal waters)

NAUT-AW

extended requirements for one-man workstation, grounding avoidance system and automation level. Data on manoeuvring characteristics(all waters)

NAUT-OC-Q Q denotes a successful audit of operational proce-dures and the qualifications of bridge personnelNAUT-AW-Q

Table B24 Loading Computer Systems (LCS) (Pt.6 Ch.9)

LCS-DCloading computer systems for damage control, ap-ply to integrated systems developed to assist the master as a decision aid under damage conditions

Table B25 Vapour control systems (Pt.6 Ch.10):VCS-1VCS-2VCS-3

systems for control of vapour emission from cargo tanks

additional notation for VCS-1 and VCS-2:B = vapour balancing

Table B26 Hull monitoring system (Pt.6 Ch.11):HMON (...) system for monitoring hull response, sea state and

operational parameters. Letters and numbers in the parenthesis will indicated type of sensors/features and number installed of each

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B 800 Additional class: Special features notations

801 Special features notations provide information regard-ing special design assumptions, arrangements or equipmentwhich are not covered by the main class requirements or theother additional class notations. (See also 802).

802 For chemical carriers information related to ship type,type of tanks, liquid level gauging devices, tank vent systems,overflow control, cargo stripping efficiency, cofferdams andventilation systems outside cargo tanks may be providedwhere applicable, see Pt.5 Ch.4.

B 900 National regulations

901 A ship trading under its own flag in domestic waters, orbetween neighbour states, upon agreement between suchstates, may be assigned class based on the flag state require-ments for domestic service instead of those rule requirementspertaining to assigned class notations. The assigned class shallbe the class notations and service restrictions with the leastpossible deviation from the rule requirements.

Table B27 Environmental class (Pt.6 Ch.12):

CLEAN basic requirements for controlling and limit-ing operational emissions and discharges

CLEAN DESIGN

additional requirements for controlling and limiting operational emissions and discharg-es. In addition, this notation specifies design requirements for protection against accidents and for limiting their consequences

Table B28 Gas fuelled engine installations (Pt.6 Ch.13):

GAS FUELLEDmandatory for ships with gas fuelled engine installations, other than steam driven LNG carriers

Table B29 Fuel treatment and conditioning system (Pt.6 Ch.14)

FUEL (- cSt, - kg/m3, -°C)

vessels with a fuel system and equip-ment complying with the relevant rules may be given the additional class notation FUEL (- cSt, - kg/m3, -°C) The numbers in brackets indicate the maximum viscosity in cSt at 50°C, the maximum density in kg/m3 at 15°C of the fuel oil and the minimum outside air temperature for which the installations are approved.

Table B30 Vibration class (Pt.6 Ch.15)

VIBR

applicable to newbuildings and ships in operation that meet specified vibration level criteria measured at pre-defined positions for machinery, components, equipment and structure

Table B31 Bridge design on seagoing ships, bridge control console (Pt.6 Ch.16)

NAV-O

this class notation may be used to assign class to ships, constructed before 1 July 2002 and with an equivalent class notation, that are transferred to DNV from another classification society

Table B32 Safety of Navigation for naval vessels (Pt.6 Ch.17)

NAUT-NAVY

Requirements and guidelines on safety of naviga-tion for naval vessels to demonstrate compliance with SOLAS Ch. V and the HSC Code Ch. 13 and Ch. 15 as amended

Table B33 Management of safe ship operation and pollution prevention (Pt.7 Ch.5)

SBM management of safety and environment protection in ship operation

Table B34 Ballast Water Management (Pt.6 Ch.18)

BWM-E (d,s,f)

Applicable to vessels complying with requirements of the International Convention for the Control and Management of Ship’s Ballast Water and Sediments by use of ballast water exchange. The letters in the bracket denote the kind of method that has been ap-plied; d for dilution method, s for sequential method and f for flow-through method.

BWM-T

Applicable to vessels complying with requirements of the International Convention for the Control and Management of Ship’s Ballast Water and Sediments by means of system(s) for treatment of ballast water complying with the Guidelines for Approval of Bal-last Water Management Systems.

BWM-TP

Applicable to vessels complying with requirements of the International Convention for the Control and Management of Ship’s Ballast Water and Sediments by means of system(s) for treatment of ballast water complying with the Guidelines for Approval of Pro-totype Ballast Water Treatment Technologies.

Table B35 Special features notationsBIS Ships built for in-water survey of the ship's

bottom and related items (Pt.3 Ch.1 Sec.1 E)DAT( - x° C) lowest design ambient air temperature (Pt.3

Ch.1 Sec.2)DK(+) decks for heavy cargo (Pt.3 Ch.1 Sec.4)HA(+) hatches for heavy cargo (Pt.3 Ch.1 Sec.4)HL(ρ) tanks for heavy liquid (Pt.3 Ch.1 Sec.4)IB(+) inner bottom strengthened for grab loading

and discharging (Pt.3 Ch.1 Sec.6)HOT(... °C cargo tank no ...)

structures built for high temperature cargo (Pt.3 Ch.1 Sec.15)

CSA-2 structural scantlings based on extended calcu-lation procedure covering loads and structural response analysis. (Pt.3 Ch.1 Sec.16)

COAT-1 COAT-2

requirements to specifications of corrosion prevention in ballast tanks for newbuildings. Cargo tanks/holds are included depending on the type of vessel. (Pt.3 Ch.1 Sec.16)

PLUS-1 PLUS-2

structural scantlings and design of critical de-tails in cargo area based on enhanced proce-dures for fatigue calculations. Intended for vessels with a long target life or vessels oper-ating in especially harsh areas. (Pt.3 Ch.1 Sec.16)

ICM increased corrosion margin (Pt.3 Ch.1 Sec.2 D300 and Pt.3 Ch.2 Sec.2 D300)

PWDK decks strengthened for wheel loading (Pt.5 Ch.2 Sec.4)

HOLDS(a, b, ......) MAY BE EMPTY

combination of holds which may be empty on full draught (Pt.5 Ch.2 Sec.5)

No MP not strengthened for multiport loading, i. e. not designed to carry maximum allowable cargo hold design mass at reduced draught (Pt.5 Ch.2 Sec.5)

MAXIMUM CARGO DENSITY(x.y)

designed for a cargo density less than 3 t/m3 (Pt.5 Ch.2 Sec.5)

...TEU number of twenty-foot containers which may be carried (Pt.5 Ch.2 Sec.6)

ETC arranged for effective tank cleaning (Pt.5 Ch.3 Sec.1)

INERT oil carriers less than 20 000 dwt fitted with in-ert gas system (Pt.5 Ch.3 Sec.11)

Table B36 Tailshaft monitoring (Pt.7 Ch.2):TMON Tailshaft condition monitoring arrangement

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Guidance note:The rules apply primarily to ships on international voyages forwhich the SOLAS, MARPOL and Load Line Conventions apply.For ships designed to a national standard of a flag state or an EUstandard, DNV may consider such alternative standards as basisfor classification in accordance with 901.


902 Deviations from the rule requirements will only be ac-cepted when the national standard has been approved by theflag state as stated in 901. Deviations will not be accepted forthe structural strength, machinery installations including steer-ing appliances, and electrical systems and equipment coveredby the main class.

903 The flag state whose domestic requirements are beingaccepted (as per 901) shall be indicated, by using lower-caseletter codes in accordance with ISO standard 3166, in paren-theses after the service restriction notation (e.g. R2 (nor),should the flag state be Norway or usa should the flag state beU.S.A. etc.).

904 A memo for owners (MO), containing information aboutthe assumption for the service restriction notation, will be is-sued in addition to the class related information contained inthe "Appendix to the classification certificate".

B 1000 Additional class: NAUTICUS1001 NAUTICUS is an additional class notation. The nota-

tion describes, inter alia, a standard for information and infor-mation availability based on access to the Society's productmodel software technology.

1002 NAUTICUS will be assigned in combination with ad-ditional notations describing specific features relating to spe-cific documentation standards. Applicable notations aredescribed in separate sections under Pt.3 and Pt.7.

1003 Vessels assigned NAUTICUS with additional nota-tions will be given the notation NAUTICUS(notation 1, no-tation 2, etc.).

1004 Newbuildings may be ordered with NAUTICUS(Newbuilding) notation, see Pt.3 Ch.1. Upon delivery fromthe yard, the NAUTICUS(Newbuilding) notation is main-tained and relevant parts of the newbuilding product model aretransferred to a ships in operation product model.

1005 NAUTICUS notations currently in use.

Table B37 NAUTICUS notationsNewbuilding enhanced documentation standard to achieve im-

proved information availability for ship newbuild-ings, including FEM-modelling and extended fatigue calculations, see Pt.3 Ch.1

Operation enhanced exchange of information between the owner and the Society in the operational phase, see Pt.7 Ch.7

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SECTION 3 CLASSIFICATION PROCEDURE

A. Assignment of Class

A 100 Request for classification

101 A request for classification of a ship is to be submittedin writing by the client.

A 200 Requirements for workshops and yards

201 Builders unknown to the Society are to demonstratetheir capability to carry out fabrication of adequate quality inaccordance with the rules before construction is started.

202 Welding of important structures, machinery installationsand equipment is to be carried out by approved welders, withapproved welding consumables and at welding shops acceptedby the Society. Requirements for approval of welding shops,welders, manufacturers of welding consumables, welding con-sumables and welding procedures are given in the rules (seePt.2 Ch.3).

203 During fabrication and construction work, the Society'ssurveyors are to have safe access to the works at all reasonabletimes, insofar as the work affects classification. The client is toensure, through contracts with the parties concerned or other-wise, that such access is possible, and that the Society is noti-fied as to when and where the surveyor's attendance is needed.

204 The following general documentation from the builder(workshop and yard) and from subcontractors (as specified in301) is to be submitted when requested by the Society:

— outline specification for the ship— list of subcontractors to the building yard— list of subcontractors to the manufacturer of products to be

delivered, if applicable.

A 300 Requirements for manufacturers

301 Manufacturers of materials, components and equipmentof categories not covered by 200 are to be considered for ap-proval according to criteria established by the Society, as ap-plicable.

302 Any required quality control of materials, componentsand equipment, is to be traceable and documented in writing.Further, quality control is to be carried out by qualified person-nel at facilities and with equipment suitable for that control.

A 400 Requirements for suppliers of services

401 Suppliers providing services on behalf of the owner,such as measurements, tests and maintenance of safety systemsand equipment, the result of which may form the basis for thesurveyor's decisions, are to be approved by the Society, ac-cording to criteria established by the Society.

Where surveyors use such services in making decisions affect-ing statutory certifications, the suppliers are subject to approv-al by the Society, where the Society is so authorised by therelevant flag Administration. For such services the Societymay accept approvals done by the flag Administration, or dulyauthorised organisations acting on behalf of the flag Adminis-tration.

A 500 Requirements for calibration of equipment

501 Measuring and test equipment used in services by man-ufacturers, builders, repairers or owners, the result of whichmay form the basis for the surveyor's decisions, is to have acalibration status or an appropriate accuracy to the surveyor'ssatisfaction.

Guidance note:For test equipment used for periodic maintenance and testing ofE0, see Pt.6 Ch.3.


A 600 Plan approval601 The builder or manufacturer shall submit the followingdocumentation, as specified in the applicable chapters of therules, and according to documentation lists supplied by the So-ciety upon receipt of class request, before production com-mences:

a) Plans and specifications required for approval, in tripli-cate, including one copy for each sister ship, as applicable.Moreover, the Society may specify alternative or addition-al requirements.

b) Corresponding technical descriptions, calculations and da-ta, including material specifications.

Any documents submitted for re-approval are to be especiallymarked to identify the revised parts.

The builder, with which the Society has the classification con-tract, is responsible for co-ordinating that plans and other doc-uments are submitted, and for distributing any approvalcomments that may have been given.

602 When a ship, which is not built under supervision of theSociety, is to be classified, the information required in 601 is,in general, to be submitted for approval. The extent of docu-mentation approval for a ship, which is classed, or which waspreviously classed, with another recognised classification so-ciety, will be decided upon in each case.

603 Plans that have been found to comply with the rule re-quirements will be provided with a statement of approval.Conditions and limitations of the approval may be stated on theplans returned with the statement of approval, or in the accom-panying letter of approval.

604 The approval may be revoked at any time if subsequentinformation indicates that the design solution was contrary tothe rule requirements or intentions.

605 The English language shall be used in plans and specifi-cations submitted for approval.

The possibility of using the local language shall be agreedupon in each case.

606 When plans and documents are submitted as electronicfiles, the format and transfer method shall be agreed upon ineach case.

A 700 Survey701 When a ship is built under the supervision of the Society,the Society will verify:

— that the construction and scantlings comply with the rulerequirements and the approved plans, and that the requiredmaterials are used

— that the materials, components and systems have been cer-tified in accordance with the rules

— that the work is carried out in compliance with the appli-cable rules and with good engineering practices. IACS"Shipbuilding and Repair Quality Standard - Part A" is re-garded as an example of a standard regarding hull struc-tures describing such good engineering practices.

— that satisfactory tests are carried out to the extent and in themanner prescribed by the rules.

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Supervision is to be carried out at the building yard and/or thesub-suppliers at the discretion of the Society, which also de-cides the extent and method of control.

702 The verification method applied by the Society at thebuilding yard or at the manufacturers' will normally be basedon visual inspections and tests.

The Society may base its verification on audits of an acceptedQuality System implemented at the yard or at the manufacturerin combination with an agreed manufacturing survey arrange-ment.

703 When a ship, which has not been built under the super-vision of the Society, is to be classified, the Society will carryout surveys to confirm:

— that the design and scantlings comply with the approvedplans

— that the material, components and systems are in accord-ance with the rules

— that the workmanship is in compliance with the applicablerules and with good engineering practice.

Functional tests are to be carried out as deemed necessary bythe Society.

704 For ships built under the supervision of another recog-nised society the requirements of 703 will normally be consid-ered as complied with for the main class.

705 When an existing ship is to be classified it is in generalto undergo all periodical surveys pertaining to the age and typeof ship. The extent of surveys will be decided by the Society ineach separate case. Ships previously classed by a recognisedsociety will, as a minimum, be subject to the surveys specifiedin IACS Procedural Requirements No. 1A.

A 800 Functional testing

801 A test programme is to be prepared by the builder to thesatisfaction of the surveyor. The programme is to specify sys-tems and components to be tested, and the testing procedure.The programme is to include sea trials of the ship with machin-ery and equipment installed.

802 The tests are to give evidence as to satisfactory operationin accordance with the rules. When testing the control andsafety system, failure modes are to be simulated as realisticallyas possible.

803 Unless otherwise agreed, the testing required by therules is to be carried out in the presence of a surveyor.

Data are to be recorded according to the test programs and asconsidered necessary by the surveyor.

A 900 Certification of materials, components and sys-tems

901 The scope of classification includes certification of ma-terials, components and systems intended for the ship. The ap-plicable chapters of the rules define the extent of thecertification that is needed for classification. The objective ofthe certification is to ensure that materials, components andsystems used in ships to be classed by the Society conform tothe rules and other standards within the framework of the rules.

The certification is a conformity assessment normally includ-ing both design and production assessment.

The production assessment includes inspection and testingduring production and/or of the final product.

902 The design assessment of the materials, components andsystems shall either be on a “case by case” basis or follow theprocedure for type approval.

903 When the “case by case” procedure is used, documenta-tion of the design shall be submitted for assessment for everyapplication as required in the applicable chapters of the rules.

A design assessment letter or design verification report shall beissued by the Society when compliance with the requirementsfor the design for the actual application is confirmed.

904 When the type approval procedure is used, documenta-tion of the design and the results of type testing as required intype approval programmes and the applicable chapters of therules, shall be submitted for assessment. A type approval cer-tificate shall be issued by the Society when compliance withthe requirements for the design is confirmed. The type approv-al certificate has a validity of 2 or 4 years depending on type ofmaterial, component and system.

905 The production assessment of materials, componentsand systems shall either be on a “case by case” basis or on thebasis of an agreed Manufacturing Survey Arrangement(MSA).

906 When the “case by case” procedure is used, the surveyand testing shall be performed on the basis of approved designdocumentation for the actual application and as required in theapplicable chapters of the rules. Compliance with the approveddesign documentation and the requirements shall be docu-mented through certificates as required in the applicable chap-ters of the rules.

907 When the production assessment is based on an MSA,the survey and testing shall be performed on the basis of ap-proved design documentation and in accordance with require-ments and procedures laid down in the MSA. Compliance withthe approved design documentation and the requirements shallbe documented through certificates as specified in the MSA oras required in the applicable chapters of the rules.

908 Certification of materials, components and systemsshall be documented by the following types of documents:

1) Det Norske Veritas Product Certificate (NV):A document signed by a surveyor of the Society stating:

— conformity with rule requirements— that tests are carried out on the certified product itself— that tests are made on samples taken from the certified

product itself— that tests are performed in presence of the surveyor or

in accordance with special agreements.

2) Works Certificate (W):A document signed by the manufacturer stating:

— conformity with rule requirements— that tests are carried out on the certified product itself— that tests are made on samples taken from the certified

product itself— that tests are witnessed and signed by a qualified de-

partment of the manufacturers.

3) Test Report (TR):A document signed by the manufacturer stating:

— conformity with rule requirements— that tests are carried out on samples from the current

production.

The applicable chapters and sections of the rules will specifywhich of the above mentioned documentation will be required.

Guidance note:For guidance regarding spare parts for ships in operation, see Pt.7Ch.1 Sec.3 C300.


909 Where the rules require Works Certificate (W) or TestReport (TR), the surveyor may at any time require tests to becarried out in his presence and/or check elements of the qualitycontrol in operation.

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910 For identification and traceability, certified products areto be stamped in accordance with the marking given in theproduct certificate and as specified by the applicable chaptersof the rules.

911 For certain components and systems as defined in theapplicable chapters of the rules, the certification may be basedon defined internationally recognised standards and certifica-tion schemes that cover the overall quality, safety and environ-mental standard of the rules. Compliance with therequirements of the standard shall be documented as requiredby the standard.

912 To ensure an efficient, cost effective and correct certifi-cation process, a General Certification Agreement is normallyto be established with manufacturers delivering NV certifiedproducts.

The General Certification Agreement may be part of a Manu-facturing Survey Arrangement.

The General Certification Agreement is to include informationon the procedures for design and production assessment and ontransfer of information and experience between the Manufac-turer and the Society.

A 1000 Manufacturing Survey Arrangement

1001 When the procedures and processes of a building yard'sor a manufacturer's quality system meet the quality, safety andenvironmental standard of the rules, a Manufacturing SurveyArrangement (MSA) may be established with the yard or themanufacturer as an alternative to the verification and produc-tion assessment described in the applicable rule chapters.

1002 The agreed MSA is to be described in a document stat-ing the requirements, scope, acceptance criteria, documenta-tion and the roles of the Society and the yard or themanufacturer in connection with the production assessment.

1003 When it is agreed through an MSA that the majority ofthe required surveys and tests are being completed without thepresence of a surveyor, it is conditional upon the manufacturerthat he has in operation a quality system certified by an accred-ited certification body to ISO 9002, or equivalent.

1004 When establishing an MSA, an initial assessment of themanufacturer’s ability to control product quality and to complywith the scope, requirements and criteria laid down in the MSAshall be performed.

The extent and frequency of periodical assessments of themanufacturer shall be included in the MSA.

1005 An MSA is normally given a validity of 4 years. Whenthe MSA is based on a certified quality system, the MSA auto-matically becomes invalid if the quality system certification isno longer valid.

A 1100 Type approval

1101 Type approval is a procedure for design assessment.Type approval can be applied to a:

— product— group of products— system.

This procedure should normally be used for design assessmentof standard designs.

1102 The type approval procedure will normally consist ofthe following elements:

— design approval— type testing— issuance of type approval certificate.

The type approval procedure used by the Society is describedin Standard for Certification No. 1.2.

1103 For certain products and systems as defined in applica-ble chapters of the rules, type approval is sufficient for certifi-cation of product quality, i.e. production assessment is notrequired.

1104 For certain products and systems as defined in the ap-plicable chapters of the rules, type approval is a mandatoryprocedure for design assessment.

1105 For products and systems manufactured for stock, typeapproval is to be the normal procedure for assessment of de-sign.

1106 For type approved products, where the basis for ap-proval are the rules of the Society, plans and technical descrip-tions of the product need not be submitted for approval foreach ship unless otherwise stated as a condition on the type ap-proval certificate. In such cases only the arrangement or sys-tem plans, interface plans and those plans mentioned on thetype approval certificate are to be submitted for approval.

A 1200 Acceptance of control by National Authorities

1201 In cases where the Administration of a flag state re-views plans, carries out type approval and surveys the ship ac-cording to statutory regulations, DNV may acceptdocumentation from the flag Administration as proof of com-pliance with relevant class rules. Necessary documentation,such as copies of approved plans, reports and other particularsapproved by the flag Administration are to be submitted.

A 1300 Certificate of interim class

1301 When the surveyor is of the opinion that the require-ments corresponding to the class in question have been met, hewill document the completion of the building supervision byissuing the certificate of interim class, which is valid until theadministration of the Society has confirmed the class and is-sued the classification certificate.

1302 At the discretion of the surveyor the building supervi-sion may be considered to be completed with some minoritems unverified, provided Conditions of Class (see B800) areissued to the effect that the remaining work, surveys or othermeasures are to be completed within a specified time. At thesame time the surveyor will document the completion of thenewbuilding supervision by issuing the certificate of interimclass as indicated in 1301.

1303 In case of classification of an existing ship not built un-der the supervision of the Society, or classification of an exist-ing ship previously classed by the Society, the surveyor willissue the certificate of interim class when he is satisfied that theapplicable requirements have been met.

A 1400 Classification certificate

1401 When the administration of the Society has examinedthe surveyor's report and is satisfied that the requirements cor-responding to the class in question have been met, the classwill be assigned and a classification certificate will be issued.

Provided the requirements for maintenance of class will becomplied with, and unless the class has been withdrawn inwriting at an earlier stage, the classification certificate will bevalid for 5 years.

1402 Declarations confirming compliance with the rulesmay upon request be issued for propulsion machinery, mainboilers and specific additional class notations, provided the So-ciety's main class has been assigned.

A 1500 Appendix to the classification certificate

1501 An “Appendix to the classification certificate” will beissued stating assumptions for the assignment of class and con-ditions regarding the use of the vessel which were establishedor assumed at the time of assignment of class.

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A 1600 Entry in the “Register of Vessels classed with DNV”1601 When a ship has been assigned class, its main particu-lars and details of class will be entered in the Register. In addi-tion to the class notations, an appropriate type descriptive notemay be entered in the Register, indicating the type of the shipin greater detail than given in the class notations, and/or pro-viding additional information on the ship's functions, designand construction. This descriptive note is provided for infor-mation only and is not to be regarded as part of the ship's classnotations.

1602 For ships built under the supervision of the Society, theclass is entered with a statement of the year and month fromwhich the periodical surveys will be dated. For other ships anotation is made of the year and month of completion of thesurvey mentioned in 705.

1603 If the ship is not immediately commissioned uponcompletion of the building supervision, the ship is subject to acondition survey at the time when she enters service. Providedthe result of this survey is in all respects satisfactory, subse-quent periodical surveys will date from the time of the condi-tion survey.

A 1700 Decline of application for classification1701 The Society reserves the right to decline an applicationfor classification or reclassification where the prior history orcondition of the ship or prior experience with the owner indi-cates this to be appropriate.

B. Retention of Class

B 100 General101 In order to retain a ship's class with the Society, the own-er is to:

— submit complete and correct information on the ship andits use, which would be of significance to the Society forits assessment of the condition of the ship in relation to therules

— submit complete and correct information on the ownershipand management of the ship, addresses and correspondingadministrative information pertinent to the relations withthe Society

— submit correct information on the flag registry of the ship— subject the ship to prescribed periodical and renewal sur-

veys, surveys of damage, repairs, conversions and altera-tions

— subject the ship to unscheduled surveys when deemed nec-essary by the Society

— rectify deficiencies and carry out Conditions of Class (see800) specified by the Society in accordance with the ruleswithin the given time limit

— pay all fees and expenses due to the Society. The ownerhas, with his or her managers, charterers and operators, ajoint and several liability for any such fees and expenses.If a request for work is made by any other than the owner,that party will, in addition to the owner, be responsible forthe payment of the relevant fees.

102 It is the duty of the owner to request surveys from theSociety and to provide the assistance and safe access requiredto the extent necessary for completion of the surveys in accord-ance with the rules.

103 The statutory certificates shall be issued by the Societywhen so authorised by the Flag Administration itself.

The Society will not accept statutory certificates issued by athird party.

The Society may accept the Safety Management Certificate is-

sued by an authorised IACS member and the Cargo Ship Safe-ty Radio Certificate issued by an organisation authorised bythe Flag Administration.

Guidance note:In case of dually classed vessels, the Society may accept statuto-ry certification by the 'dual' class society, upon agreement.


B 200 Periodical and renewal surveys201 A ship shall be subjected to surveys with the frequencyand extent given in Pt.7 Ch.2.

B 300 Survey of damage301 If the hull, machinery installations or equipment coveredby classification sustain damage of such extent that it may bepresumed to lead to a Condition of Class (see 800), the Societyis to be informed without delay. The ship is to be surveyed inthe first port of call or according to further instructions fromthe Society. The survey is to be of the extent which the survey-or considers necessary for ascertaining the amount of damage.

B 400 Repairs401 When hull, machinery installations, systems or equip-ment is covered by classification and is to be subjected to re-pairs of any significance, then the work shall be carried out byqualified personnel and in compliance with the applicablerules, and with good engineering practices under the supervi-sion of a surveyor.

Guidance note:IACS "Shipbuilding and Repair Quality Standard - Part B" is re-garded as an example of a standard concerning hull structuresthat describe such good engineering practices. Guidelines forhull repairs can be found in Classification Note No. 72.1.


402 If repairs, (e.g. during voyage) stipulated in 401 are to becarried out without the attendance of a surveyor, a repair planshould be approved by the Society in advance.

Repairs shall only be carried out to an extent and by methodswhich at any time do not seriously affect the main functions ofthe ship and its watertight and structural integrity.

403 In cases where repairs are carried out without attendanceof a surveyor, documentation with respect to quality of materi-als used, and the qualification of personnel having carried outthe repairs, are to be available when the surveyor is called foracceptance.

B 500 Procedures for maintenance501 When referring to maintenance procedures in the rules,these are normally meant to be procedures recommended bythe supplier of the relevant equipment or systems or to otherapplicable recognised standards for the equipment or system inquestion.

B 600 Conversions and alterations601 If hull, machinery installations, equipment or systemscovered by classification are to be converted or altered, thechanges are to be documented and are to be approved by theSociety in advance.

602 Alterations to hull, machinery and equipment made pos-sible by amendments of the applicable rules may be undertak-en provided the general safety and performance standardrequired for retention of class will be maintained.

603 The conversion or the alteration is to take place underthe surveyor's supervision in the same manner as for new con-structions, see A701.

604 Ships which undergo conversions or alterations are tosatisfy the following:

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All ships which undergo repairs, alterations, modifications andoutfitting related thereto shall continue to comply with at leastthe requirements previously applicable to these ships. Suchships if constructed before the date the present rule standardcame into force shall, as a rule, comply with the requirementsfor ships constructed on or after that date to at least the sameextent as they did before undergoing such repairs, alterations,modifications or outfitting. Repairs, alterations and modifica-tions of a major character and outfitting related thereto shallmeet the requirements for ships constructed on or after the datethe present rule standard came into force in so far as the Soci-ety deems reasonable and practicable.

(SOLAS regulation II-1/1.3)

605 By modifications of a major character is to be under-stood major conversions defined as a conversion of an existingship:

i) which substantially alters the dimensions or carrying ca-pacity of the ship; or

ii) which changes the type of the ship; or

iii) the intent of which in the opinion of the Society is substan-tially to prolong its life.

(MARPOL 73/78, Annex I, Regulation 1(8)(a))

606 Repairs, alterations and modifications are not to impairthe safety standard of the ship. See Classification Note No. 8.

B 700 Change of ownership701 A ship retains class when transferred to another owner,with the exception of class notations and survey arrangementsbased on certification of management of operations, which willbe deleted automatically. In the case of such transfer the previ-ous owner is to give the Society a written notice immediately.Until this has been done communication with binding effectwill be sent to the previous owner.

B 800 Conditions of Class and Memoranda801 If it is found that the ship's hull, machinery and or equip-ment have sustained damage, become defective or deficientrelative to the applicable requirements, the Society will issue awritten statement in the form of a condition.

802 A condition of class (abbreviated CC) will be issued ifthe condition is related to requirements set by the rules. A CCis subject to specified rectification (e.g. repairs) or operation(e.g. survey) and shall be carried out within a given time limit,in order that the ship retain class. If the defect or deficiency isof a nature that requires immediate rectification, then this willbe specifically communicated to the owner or his representa-tive.

803 A condition on behalf of the administration (abbreviatedCA) will be issued if the condition is related to statutory sur-veys where DNV has been authorised.

804 If the Society deems it necessary to carry out examina-tions in order to ascertain whether damage defect or insuffi-ciency has been sustained or is imminent, a condition (CC orCA) will be issued.

805 A Memorandum to owner (abbreviated MO) is informa-tion related to the ship, its machinery and equipment or to rulerequirements. An MO will be issued in relation to items thatare considered to be of no immediate material significance re-garding safety. An MO may supplement information givenotherwise, e.g. in the Appendix to the classification certificate(see A1500) or the Register of vessels classed with DNV (seeA1601).

An MO may, for example, be used in the following cases:

— exemptions from rule requirements— limitations on the use of the ship or its equipment— deficient or lack of documentation

— defects or deficiencies of no concern to class— technical measurements or examinations required— suspended voluntary class notations— equipment in excess of class requirements taken out of

use.

A written MO that is no longer valid will be deleted.

806 A time limit may be given if an action is required by theowner under the MO. If the required action is not carried outwithin the given time limit, the MO will be replaced by a CC.

807 Conditions and memoranda are given in writing to theowners. Conditions may be made verbally, provided that therepresentative of the owner(s) accepts the condition and thesurveyor ensures that the condition has been rectified beforethe survey has been completed.

808 The Society may at any time alter a condition, memoran-dum or information if this is considered appropriate.

B 900 Survey reports and survey status901 The surveyor will prepare and submit to the owner re-ports on all surveys which have been carried out.

902 The Society will make available survey and certificatestatus reports, to owners, via the DNV Internet website. It is theowner’s responsibility to obtain this information from theDNV Internet website. Survey and certificate status reports, onpaper, will be distributed by special request, only.

B 1000 Rules for newbuildings applicable for ships in operation1001 Previous and current chapters of rules for newbuild-ings, Pt.2 to Pt.6, are applicable to ships in operation as fol-lows:

Ships for which the initial newbuilding survey has been carriedout by DNV or another recognised classification society

— Chapters in force at the date of the signing of the new-building class request for the ship in question, see alsoSec.1 B301.

Other ships

— Chapters in force at the date of entry into class of the shipin question, see also Sec.1 B303.

In special cases, amendments to the current newbuilding re-quirements may be made mandatory to ships in operation. Ifso, this will be especially stated.

Irrespective of these general regulations, requirements adoptedfrom the International Maritime Standards need not exceedthose in force at the time of building of the ship, including laterretroactive amendments.

1002 When applying the relevant chapters mentioned in1001 to ships in operation, some reduction in the requirementsmay be accepted for normal wear, tear and corrosion.

1003 For hull items, such reductions or corrosion allowanc-es may be established at the time of the renewal survey, ac-cording to Classification Note No. 72.1.

1004 When components are renewed, such componentsshould in general be delivered with documentation as per validrules at the time of newbuilding. However, if present rules areless stringent, they may replace the old rules. This applies toboth design approval and survey of such components.

C. Suspension and Withdrawal of Class

C 100 General101 The Society may suspend or withdraw a ship's class in

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cases where the assumptions as the basis for classification, orthe provisions for retention of class, have been violated.

102 The decision to suspend or withdraw a ship's main and,if applicable, mandatory class notations is made by the admin-istration of the Society. However, in cases of automatic sus-pension, see 201 and 202, no individual decision is made.Suspension or withdrawal of class may take effect immediate-ly or after a specified period of time.

103 If the owner's default only affects conditions related tonon-mandatory class notations, the suspension or withdrawalmay be limited to these class notations only. Such suspensionor withdrawal may be made by the surveyor in connection withcertificate endorsement.

104 When it is considered that an owner’s failure to complywith the rule requirements is sufficiently serious or fraudulentthe suspension or withdrawal of class may, at the discretion ofthe Society, be extended to include other ships controlled bythe same owner.

C 200 Suspension of class201 If the renewal surveys for hull, machinery installationsand equipment related to main and mandatory class notations,as defined in Sec.2 B, are not completed before the expiry dateof the classification certificate, and if no postponement hasbeen granted as given in Pt.7 Ch.1 Sec.2 B700, the class willbe automatically suspended with immediate effect (see also302), unless the surveys are under completion.

202 If the annual or intermediate surveys are not completedwithin 3 months from the anniversary date of the classificationcertificate the class is automatically suspended with immediateeffect, unless the surveys are under completion.

203 The Society may further decide to suspend a ship' s classif the ship is not submitted to the required periodical surveysalso when this is due to force majeure cases, e.g. a major cas-ualty.

204 In addition to the conditions laid down in 201, 202 and203, a ship's class or additional class notations may also be sus-pended with immediate effect by the administration of the So-ciety in cases where repair of deficiencies are not carried out tothe surveyor's satisfaction or otherwise dealt with in an appro-priate manner within the time limits given by the surveyor.

205 Where a suspension of class has come into effect the So-ciety will:

— notify the owner in writing— notify the proper authorities in the country where the ship

is registered— make an entry to this effect in the "Register of vessels

classed with DNV".

C 300 Withdrawal of class301 The class will be withdrawn at the owner's request.

302 If the outstanding surveys specified in 201, 202 and 203or required repairs as given in 204 are not carried out within aspecified time after the class suspension, the Society may de-cide to withdraw the ship's class.

303 When any ship proceeds to sea without having rectified

a condition of class which was required to be dealt with beforeleaving port, the class will be withdrawn with immediate ef-fect.

304 If the outstanding debt owed to the Society is not paidwithin a fixed date, the Society may withdraw the ship's classwith one month's written notice. This also applies when the ob-ligation to pay rests with a yard or with the ship's previousowners. In special cases a shorter notice may be given.

305 If the owner makes a general assignment for the benefitof his creditors or if any proceedings are commenced in courtor any order or judgement is given by any court for a liquida-tion, winding up of the owner, the Society may withdraw theclass with immediate effect.

306 Where a withdrawal of class has come into effect the So-ciety will:

— notify the owner in writing— notify the proper authorities in the country where the ship

is registered— make an entry to this effect in the "Register of vessels

classed with DNV".

C 400 Reclassification

401 If the outstanding surveys leading to class suspension asgiven in 201, 202 and 203 or required repairs as given in 204are carried out within a specified time, and the result of thissurvey is such that no condition of class is given and further-more that there is no overdue periodical surveys or conditionsof class at that time, the class will be reinstated and the existingclassification certificate retains its validity.

402 In all other cases than that given in 401, and if the cir-cumstances leading to withdrawal of class no longer exist, aship's class may only be reinstated based upon a written re-quest from the owner. The survey extent will in such instancesbe dependent upon the ship's classification status at the time ofwithdrawal.

403 When the surveyor is satisfied that the applicable re-quirements given in 402 have been met, he will issue a certifi-cate of interim class which will remain valid until theadministration of the Society has confirmed the class and is-sued the classification certificate.

404 When the class is reinstated, the Society will confirm thereinstatement in writing to the owners and to the Authorities inthe country where the ship is registered and make the informa-tion available to any third party upon request.

D. Appeals

D 100 Decisions taken by the Society

101 The client may request that a decision by the Society isto be taken up for reconsideration by one or more surveyorsspecially appointed by the Society. The expenses incurred areto be paid by the party making the appeal, however, if the ear-lier decision is revoked, the expenses will be covered by theSociety.

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SECTION 4 LEGAL PROVISIONS

A. Liability and Jurisdiction

A 100 Limited liability 101 If any person suffers loss or damage which is proved tohave been caused by any negligent act or omission of Det Nor-ske Veritas, then Det Norske Veritas shall pay compensation tosuch person for his proved direct loss or damage. However, thecompensation shall not exceed an amount equal to ten timesthe fee charged for the service in question, provided that themaximum compensation shall never exceed USD 2 million.

In this provision "Det Norske Veritas" shall mean the Founda-tion Det Norske Veritas as well as all its subsidiaries, directors,

officers, employees, agents and any other acting on behalf ofDet Norske Veritas.

A 200 Governing law

201 These Rules, the classification of the ship or unit and therelationship between the Society and other parties shall be gov-erned by Norwegian law.

A 300 Venue

301 Any dispute arising in relation to or as a consequence ofthese Rules shall only be resolved by the courts of Norway, theMunicipal Court of Oslo being the proper venue.

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