rules for classification ships part 1 general ......p a r t 1 c h a p t e r 2 c h a n g e s-c u r r...

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  • The content of this service document is the subject of intellectual property rights reserved by DNV GL AS ("DNV GL"). The useraccepts that it is prohibited by anyone else but DNV GL and/or its licensees to offer and/or perform classification, certificationand/or verification services, including the issuance of certificates and/or declarations of conformity, wholly or partly, on thebasis of and/or pursuant to this document whether free of charge or chargeable, without DNV GL's prior written consent.DNV GL is not responsible for the consequences arising from any use of this document by others.

    The electronic pdf version of this document, available free of chargefrom http://www.dnvgl.com, is the officially binding version.

    DNV GL AS

    RULES FOR CLASSIFICATION

    Ships

    Edition July 2019

    Part 1 General regulations

    Chapter 2 Class notations

  • FOREWORD

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

    © DNV GL AS July 2019

    Any comments may be sent by e-mail to [email protected]

    This service document has been prepared based on available knowledge, technology and/or information at the time of issuance of thisdocument. The use of this document by others than DNV GL is at the user's sole risk. Unless otherwise stated in an applicable contract,or following from mandatory law, the liability of DNV GL AS, its parent companies and subsidiaries as well as their officers, directors andemployees ("DNV GL") for proved loss or damage arising from or in connection with any act or omission of DNV GL, whether in contract or intort (including negligence), shall be limited to direct losses and under any circumstance be limited to 300,000 USD.

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    CHANGES – CURRENT

    This document supersedes the July 2018 edition of DNVGL-RU-SHIP Pt.1 Ch.2.Changes in this document are highlighted in red colour. However, if the changes involve a whole chapter,section or subsection, normally only the title will be in red colour.

    Changes July 2019, entering into force 1 January 2020Topic Reference Description

    New class notations Sec.3 and Sec.4 The following notations are new:

    — FSU for liquefied gas— FSU for C— Walk2workready— NAABSA— SRTP— REGAS ready— Gas fuelled LPG— ITC— WAPS— Platform supply— Polar— DAV— Quiet— ASP— ASP ready

    New qualifiers The following qualifiers are new

    — RSD(NAS, X)— VCS(L, X)— NAUT(INS+)— Winterized(BST)

    Deleted class notation Sec.4 The following class notation is deleted:

    — CHEM

    Deleted qualifiers Sec.3 and Sec.4 The following qualifiers are deleted:

    — Offshore service vessel(Supply)— Winterized(Basic, Cold, Polar)— NAUT(ICS)

    Editorial correctionsIn addition to the above stated changes, editorial corrections may have been made.

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    CONTENTS

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

    Section 1 Class notations........................................................................................61 General................................................................................................ 6

    1.1 Introduction..................................................................................... 6

    Section 2 Construction symbol and main class notation......................................... 81 Construction symbols.......................................................................... 8

    1.1 General........................................................................................... 82 Main class notation..............................................................................8

    2.1 General........................................................................................... 8

    Section 3 Ship type notations................................................................................. 91 Introduction.........................................................................................9

    1.1 General........................................................................................... 92 Dry cargo ships................................................................................... 93 Container ships..................................................................................114 RO/RO ships...................................................................................... 115 Passenger ships.................................................................................126 Oil tankers......................................................................................... 127 Chemical tankers............................................................................... 158 Liquefied gas tankers........................................................................ 169 Compressed gas tankers....................................................................1810 Offshore service vessels.................................................................. 1811 Vessels for special operations......................................................... 1912 Non-self-propelled vessels...............................................................2413 Fishing vessels.................................................................................2514 Naval vessels................................................................................... 25

    Section 4 Additional class notations..................................................................... 261 Introduction.......................................................................................26

    1.1 General..........................................................................................262 Structural strength and integrity.......................................................263 Propulsion, power generation and auxiliary systems.........................324 Navigation and manoeuvring.............................................................385 Cargo operations............................................................................... 406 Equipment and design features......................................................... 447 Cold climate.......................................................................................51

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    8 Environmental protection and pollution control.................................559 Living and working conditions...........................................................5810 Survey arrangements.......................................................................5811 Naval................................................................................................62

    11.1 General........................................................................................62

    Section 5 Service area.......................................................................................... 631 Service area notation.........................................................................63

    1.1 General..........................................................................................63

    Section 6 Descriptive notation.............................................................................. 641 General.............................................................................................. 64

    1.1 .................................................................................................... 641.2 .................................................................................................... 641.3 .................................................................................................... 641.4 .................................................................................................... 64

    Changes – historic................................................................................................65

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    SECTION 1 CLASS NOTATIONS

    1 General

    1.1 Introduction

    1.1.1 All vessels classed with the Society may be assigned

    — construction symbol— main class notation— ship type notation— additional class notation— service area notation— descriptive notation

    as applicable.

    1.1.2 Class notations are assigned in order to determine applicable rule requirements for assignment andretention of class. Applicable class notations are given in Sec.2 to Sec.6.

    1.1.3 Class notations are either mandatory or optional. The mandatory class notations are indicated in thetables given in Sec.2 to Sec.5.

    1.1.4 In accordance with Ch.1 Sec.1 [2.2.5] optional class notations from the Society's other rule booksmay, upon special consideration, be assigned to a vessel complying with those rules.

    1.1.5 Class notations may be given one or more qualifiers which are supplementary symbols used to identifyvariants of the class notation or a design parameter. Qualifiers typically denote differences in levels ofcomplexity and/or special requirements or limitations, and may be assigned additional requirements.Qualifiers follow immediately after a class notation and are indicated in parenthesis. Multiple qualifiers areseparated by comma and space.

    1.1.6 Class notations and qualifiers are shown in bold. See Table 1 for examples of class notations andqualifiers.

    1.1.7 The Tables in Sec.2 to Sec.5 include the following information:

    — name of class notation— indication of class notation being mandatory— reference to design requirements*— reference to survey requirements for fleet in service (FiS)*— qualifiers as relevant— purpose of class notation— application, giving additional information on when and/or where a class notation can be applied and/or

    under what condition a class notation is mandatory.

    * NA indicates no requirements.

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    1.1.8 Examples of typical class notations are shown in Table 1.

    Table 1 Examples of class notations

    Example 1 Example 2 Example 3

    Construction symbol (see Sec.2 [1]) ✠ ✠ ✠

    Main class notation (see Sec.2 [2]) 1A 1A 1A

    Ship type notations (see Sec.3) Container ship Tanker for oil Offshore servicevessel(AHTS)

    Additional class notations (see Sec.4):

    Related to structural strength and integrity CSR Strengthened(DK)

    Related to propulsion, power generation andauxiliary systems E0 E0 E0

    Related to navigation and manoeuvring NAUT(AW, INS+) NAUT(OSV)

    Related to cargo operation RSCS+ Bow loading

    Related to equipment and design features DG LFL HELDK(S, H) SF

    Related to cold climate Ice(E) Ice(1A) Winterized

    Related to environmental protection andpollution control Clean Clean(Design)

    Related to survey arrangement BIS TMON ESP TMON

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    SECTION 2 CONSTRUCTION SYMBOL AND MAIN CLASS NOTATION

    1 Construction symbols

    1.1 General

    1.1.1 The construction symbol ✠ will be assigned to vessels built under the supervision of the Society.

    1.1.2 The construction symbol will be assigned to vessels built under the supervision of a classificationsociety recognized by the Society and later assigned class with the Society. For such vessels the classnotations which the Society considers to have the equivalent intent will be assigned.

    1.1.3 Vessels other than those described in [1.1.1] and [1.1.2] will not be assigned a construction symbolwhen classed with the Society.

    2 Main class notation

    2.1 General

    2.1.1 The main class notation 1A will be assigned to vessels with hull, machinery, systems and equipmentfound to be in compliance with applicable rule requirements as given in Pt.2, Pt.3 and Pt.4. Requirementsgiven by ship type notations and additional class notations may supersede the requirements given in Pt.2,Pt.3 and Pt.4. In such cases the main class notation 1A will still be assigned.

    2.1.2 The main class notation 1A will also be assigned to vessels designed and constructed in accordancewith the rules of another classification society, and later assigned class with the Society.

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    SECTION 3 SHIP TYPE NOTATIONS

    1 Introduction

    1.1 General

    1.1.1 Vessels that comply with requirements defined in Pt.5 may be given a ship type notation as indicatedin Table 1 to Table 13 of this section.

    1.1.2 A vessel may be assigned more than one ship type notation provided that the respective requirementsare met.

    1.1.3 Certain ship type notations are mandatory based on e.g.:

    — type of cargo— number of passengers— the ability to execute special operations.

    2 Dry cargo shipsTable 1 Ship type notations for dry cargo ships

    Class notation Qualifier Purpose Application

    General dry cargo shipMandatory:

    yes

    Design requirements:

    Pt.5 Ch.1

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3, and Pt.7 Ch.1 Sec.4

    Carriage of unitized and drybulk cargo

    Mandatory for shipsoccasionally carryingdry cargo in bulk, unlessship type notation Multi-purpose dry cargo ship isassigned

    Multi-purpose dry cargoship

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.1

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3, and Pt.7 Ch.1 Sec.4

    Carriage of unitized and drybulk cargo

    Mandatory for shipsoccasionally carrying drycargo in bulk, unless shiptype notation General drycargo ship is assigned

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    Class notation Qualifier Purpose Application

    Bulk carrier

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.1

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3, and Pt.7 Ch.1 Sec.4

    Carriage of dry bulk cargo

    Mandatory for sea-goingsingle deck ships withcargo holds of singleand/or double side skinconstruction, with a doublebottom, hopper side tanksand top-wing tanks fittedbelow the upper deck, andintended for the carriage ofsolid bulk cargoes

    Ore carrier

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.1

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3, and Pt.7 Ch.1 Sec.4

    Carriage of ore cargo in drybulk

    Mandatory for sea-goingsingle deck ships havingtwo longitudinal bulkheadsand a double bottomthroughout the cargoregion, and intended forcarrying ore cargoes in thecentre hold only

    X carrier

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.1

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3, and Pt.7 Ch.1 Sec.4

    Specialised for the carriageof a single type of dry bulk

    Mandatory unless ship typenotation Bulk carrier is assigned. X denotestype of bulk cargo to becarried, limited to either,Woodchips, Cement, Flyash, or Sugar

    Great lakes bulk carrier

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.1

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3, and Pt.7 Ch.1 Sec.4

    Carriage of dry bulk cargo

    Designed to operate withinthe limits of the GreatLakes and St. Lawrenceriver to the seaward limitsdefined by the AnticostiIsland

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    3 Container shipsTable 2 Ship type notation for container ships

    Class notation Qualifier Purpose Application

    Container ship

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.2

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3, and Pt.7 Ch.1 Sec.4

    Carriage of containers

    Ships primarily intended forthe carriage of containers.Carriage of break bulkon inner bottom may beaccepted in special cases.

    4 RO/RO shipsTable 3 Ship type notations for RO/RO ships

    Class notation Qualifier Purpose Application

    RO/RO ship

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.3

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3, and Pt.7 Ch.1 Sec.4

    Loading and unloading thecargo by Roll on/ Roll off(RO/RO)

    Car carrier

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.3

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3, and Pt.7 Ch.1 Sec.4

    Carriage of vehicles

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    5 Passenger shipsTable 4 Ship type notations for passenger ships

    Class notation Qualifier Purpose Application

    Passenger ship

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.4

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of passenger More than 12 passengers

    A Carriage of passengers andvehicles

    More than 12 passengersand vehicles on encloseddecks

    Ferry

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.4

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    B Carriage of passengers andvehicles

    More than 12 passengersand vehicles on weatherdecks only. Requiresservice area restriction R2or stricter

    6 Oil tankersTable 5 Ship type notations for oil tankers

    Class notation Qualifier Purpose Application

    Tanker for oil

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.5

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of oil in bulk For carriage of oil

    Tanker for oil products

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.5

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of oil products inbulkFor carriage of all oilproducts except crude oil

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    Class notation Qualifier Purpose Application

    Barge for oil

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.5,

    Pt.5 Ch.11

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of oil in bulk For carriage of oil

    Barge for oil products

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.5,

    Pt.5 Ch.11

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of oil products inbulkFor carriage of all oilproducts except crude oil

    Bulk carrier or tanker for oil

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.1 Sec.3

    Pt.5 Ch.5

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of dry bulk cargoalternating with carriage ofoil

    Combination carrier

    Tanker for oil products withflashpoint above 60°C

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.5

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of all types of oilproducts with flashpointabove 60°C

    For carriage of all types ofoil products with flashpointabove 60°C

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    Class notation Qualifier Purpose Application

    Tanker for asphalt/bitumen

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.1 Sec.3

    Pt.6 Ch.1 Sec.12

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of liquid asphalt/bitumen in bulkFor carriage of liquidasphalt/bitumen in bulk

    Barge for oil products withflashpoint above 60°C

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.5,

    Pt.5 Ch.11

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of all types of oilproducts with flashpointabove 60°C

    For carriage of all types ofoil product with flashpointabove 60°C

    Barge for asphalt/bitumen

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.1 Sec.2

    Pt.5 Ch.11

    Pt.6 Ch.1 Sec.12

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of liquid asphalt/bitumen in bulkFor carriage of liquidasphalt/bitumen in bulk

    Bulk carrier or Tanker foroil products

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.1 Sec.3

    Pt.5 Ch.5

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of dry bulk cargoalternating with carriage ofoil products

    Combination carrier

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    7 Chemical tankersTable 6 Ship type notations for chemical tankers

    Class notation Qualifier Purpose Application

    Tanker for C

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.6

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of specific type ofliquid chemical. C denotesthe type of cargo for whichthe ship is classed.

    Chemical carriers accordingto the IBC or BHC code.Cargoes not requiring fullcompliance with Pt.5 Ch.6Sec.1 to Pt.5 Ch.6 Sec.17

    Tanker for chemicals

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.6

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of chemicals

    Chemical carriers withcargos listed in the IBCcode Ch.17 and Ch.18 withadditions given in IMOMEPC.2/Circ. XX List 1

    Barge for chemicals

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.6

    Pt.5 Ch.11

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of chemicals

    Barge for chemicals withcargos listed in the IBCcode Ch.17 and Ch.18 withadditions given in IMOMEPC.2/Circ. XX List 1

    Barge for C

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.6

    Pt.5 Ch.11

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of specific type ofliquid chemical. C denotesthe type of cargo for whichthe ship is classed.

    Chemical carriers accordingto the IBC or BHC code.Cargoes not requiring fullcompliance with Pt.5 Ch.6Sec.1 to Pt.5 Ch.6 Sec.17

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    Class notation Qualifier Purpose Application

    Tanker for chemicals withflashpoint above 60°C

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.6

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of non-flammableliquid chemicals or liquidchemicals with flashpointabove 60°C and which arenot heated to within 15°C ormore of its flashpoint

    Chemical carriers built incompliance with Pt.5 Ch.6Sec.1 [1.3.6] and Pt.5 Ch.6Sec.1 [1.3.7]

    Barge for chemicals withflashpoint above 60°C

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.6

    Pt.5 Ch.11

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of non-flammableliquid chemicals or liquidchemicals with flashpointabove 60°C and which arenot heated to within 15°C ormore of its flashpoint

    Barge for chemicals built incompliance with Pt.5 Ch.6Sec.1 [1.3.6] and Pt.5 Ch.6Sec.1 [1.3.7]

    8 Liquefied gas tankersTable 7 Ship type notation for liquefied gas tankers

    Class notation Qualifier Purpose Application

    Tanker for liquefied gas

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.7

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of liquefied gas

    Tanker for C

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.7

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of specific type ofliquified gas. C denotes thetype of cargo for which theship is classed

    Tanker for C will beconsidered in each case,depending on the nature ofthe cargo to be carried.Mandatory for shipsdedicated for transport ofspecific product(s) as inPt.5 Ch.7 Sec.19

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    Class notation Qualifier Purpose Application

    Barge for liquefied gas

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.7

    Pt.5 Ch.11

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of liquefied gas

    Barge for C

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.7

    Pt.5 Ch.11

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of specific type ofliquified gas. C denotes thetype of cargo for which theship is classed

    Barge for C will beconsidered in each case,depending on the nature ofthe cargo to be carried.Mandatory for shipsdedicated for transport ofspecific product(s) as inPt.5 Ch.7 Sec.19

    FSU for liquefied gas

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.7 Sec.25

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Floating storage unit forliquefied gas to be operatedat a fixed location.

    Mandatory for floatingstorage units dedicatedfor storage of productsgiven in Pt.5 Ch.7 Sec.19.Not applicable for unitsdesigned for transportationof liquefied gas.

    FSU for C

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.7 Sec.25

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Floating storage unit ofliquefied gas to be operatedat a fixed location, where Cindicates the name or groupof product(s) for which theFSU is classified for storage.

    Mandatory for floatingstorage units of specificproduct(s) as given in Pt.5Ch.7 Sec.19. Not applicablefor units designed fortransportation of liquefiedgas.

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    9 Compressed gas tankersTable 8 Ship type notation for compressed gas tankers

    Class notation Qualifier Purpose Application

    Tanker for compressednatural gas

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.8

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of compressednatural gas

    10 Offshore service vesselsTable 9 Ship type notations for offshore service vessels

    Class notation Qualifier Purpose Application

    For vessels providingservices for offshoreinstallations

    + For services in harshweather conditions

    Anchor handlingTowing of floating objectsand handling of anchoringequipment

    Towing Towing floating objects inopen waters

    AHTS

    Towing of floating objects,handling of anchoringequipment, and platformsupply services

    Compliance with qualifiersAnchor handling andTowing and the additionalclass notation Platformsupply

    Offshore service vessel

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.9

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3, Pt.7 Ch.1 Sec.4 and Pt.7Ch.1 Sec.6 [34]

    Windfarm maintenance Maintenance and service ofoffshore wind farms

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    Class notation Qualifier Purpose Application

    Rescue operations andstandby servicesStandby vessel

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.9

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    S

    Rescue operations andstandby services in harshweather conditions, e.g. theNorth Sea

    11 Vessels for special operationsTable 10 Ship type notations for vessels for special operations

    Class notation Qualifier Purpose Application

    Crane vessel

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.10 Sec.2

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3, Pt.7 Ch.1 Sec.4 and Pt.7Ch.1 Sec.6

    Crane operations

    Cable laying vessel

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.10 Sec.3

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Cable laying

    Pipe laying vessel

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.10 Sec.4

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Pipe laying

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    Class notation Qualifier Purpose Application

    Semi–submersible heavytransport vessel

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.10 Sec.5

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of heavy unitizeddry cargo

    Designed to load andunload deck cargo bytemporarily submerging itscargo deck through ballastoperations

    SAT

    Equipped with a saturationdiving system classified bythe Society in compliancewith DNVGL-RU-OU-0375Diving systems

    Surface

    Equipped with a surfacediving system classified bythe Society in compliancewith DNVGL-RU-OU-0375Diving systems

    Ready

    Vessel prepared forinstallation of divingsystem with the supportedinterfaces listed in theappendix of class

    DSV

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.10 Sec.6

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    OCSIACS classed saturationdiving system installed asper Pt.5 Ch.10 Sec.6 [1.8]

    Seismographic research Requirements to hullarrangement and strengthSeismic vessel

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.10 Sec.7

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    A Seismographic research Requirements to systemsand equipment

    Well stimulation vessel

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.10 Sec.8

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Well stimulation

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    Class notation Qualifier Purpose Application

    Fire fighting

    I

    Fire fighting with activeprotection, giving it thecapability to withstandhigher heat radiation loadsfrom external fires

    I+

    Fire fighting with active andpassive protection, giving itthe capability to withstandthe higher heat radiationloads also when the activeprotection fails. In addition,the vessel incorporates alonger throw length

    IIContinuous fire fighting oflarge fires and cooling ofstructures.

    May be assigned incombination with Firefighter (I)

    III

    Continuous fire fighting oflarge fires and cooling ofstructures with larger waterpumping capacity and morecomprehensive fire fightingequipment than for II.

    May be assigned incombination with Firefighter (I)

    Fire fighter

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.10 Sec.9

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Capability Fire fighting capability

    Vessels not specifically builtfor fire fighting purposesbut having fire fightingcapabilities in addition totheir regular service

    Icebreaker

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.10 Sec.10

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3, and Pt.7 Ch.1 Sec.4

    Ice breaking

    Tug

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.10 Sec.11

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3, Pt.7 Ch.1 Sec.4 and Pt.7Ch.1 Sec.6 [34]

    Towing of other vessels bytowlines

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    Class notation Qualifier Purpose Application

    F

    Steering and manoeuvringoperations of other vesselsby towlines

    Escort rating numbers basedon full scale test

    N

    Steering and manoeuvringoperations of other vesselsby towlines

    Escort rating numbers basedon numerical calculations

    O

    Steering and manoeuvringoperations of other vesselsby towlines

    Escort rating numbersestablished by anotherclassification society

    One of the qualifiers F, Nor O is mandatory

    Only one of the qualifiers F,N or O may be assigned

    Escort tug

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.10 Sec.11

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3, Pt.7 Ch.1 Sec.4 and Pt.7Ch.1 Sec.6 [34]

    FS, t, v

    FS, t, v are escort ratingnumbers, where:

    FS indicates maximumtransverse steering pull inton, exerted by the escorttug on the stern of theassisted vessel

    t is the time in secondsrequired for the change ofthe tug's position from oneside to the correspondingopposite side

    v is the speed in knotsat which this pull may beattained

    Mandatory qualifier

    Maximum two sets ofescort rating numbers maybe assigned

    DredgingDredger

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.10 Sec.12

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Suction Suction dredging

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    Class notation Qualifier Purpose Application

    Pusher

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.10 Sec.13

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Pushing

    Slop reception vessel

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.10 Sec.14

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Floating facilities forreception and processing ofoily water and oil residue

    Reefer

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.10 Sec.15

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6 [4]

    Carriage of refrigerateddry cargo and fruit andvegetables under controlledatmosphere

    Refrigerated fruit juicecarrier

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.10 Sec.15

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6 [4]

    Carriage of refrigerated fruitjuices and similar liquidcargoes in bulk

    Tanker for potable water

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.10 Sec.15

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Carriage of potable water inbulk.

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    12 Non-self-propelled vesselsTable 11 Ship type notations for non-self-propelled vessels

    Class notation Qualifier Purpose Application

    Vessels with cargo hold

    Hopper

    Vessels for dredgingoperations with self-unloading through thebottom

    Barge

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.11 Sec.2

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2 and Pt.7 Ch.1Sec.4

    Concrete Vessels made of concreteand with cargo hold

    No means of self-propulsion for transit

    Pontoon

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.11 Sec.3

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2 and Pt.7 Ch.1Sec.4

    Vessels without cargo hold No means of self-propulsion for transit

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    13 Fishing vesselsTable 12 Ship type notations for fishing vessels

    Class notation Qualifier Purpose Application

    Fishing

    SArranged for carriage of fishin bulk, with shifting boardsin cargo holds

    Fishing vessel

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.12

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    N

    Fishing vessel complyingwith the requirements ofthe Norwegian MaritimeDirectorate (NMD)

    Fishing Stern trawling

    SArranged for carriage of fishin bulk, with shifting boardsin cargo holds

    Stern trawler

    Mandatory:

    no

    Design requirements:

    Pt.5 Ch.12

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    N

    Fishing vessel complyingwith the requirements ofthe Norwegian MaritimeDirectorate (NMD)

    14 Naval vesselsTable 13 Ship type notations for naval and naval support vessels

    Class notation Qualifier Purpose Application

    Naval

    Mandatory:

    yes

    Design requirements:

    Pt.5 Ch.13

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Naval operationsNaval flagged vessels andadministered by a nationalnaval administration

    Naval landing craft

    Mandatory:

    yes

    Design requirements:

    DNVGL-RU-HSLC Pt.5 Ch.8

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    For vessels intended tocarry troops, vehicles andequipment combined withbeach landing operations

    Naval flagged vessels andadministered by a nationalnaval administration

    Lpp < 40 m

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    SECTION 4 ADDITIONAL CLASS NOTATIONS

    1 Introduction

    1.1 General

    1.1.1 Vessels that comply with the requirements provided in Pt.6 may be assigned corresponding additionalclass notation as indicated in Table 1 to Table 11 of this section.

    1.1.2 Certain additional class notations are mandatory for certain types of installation, features, orequipment installed; (e.g. Bow loading, Battery(Power), Inert) where the Society has found that theseconstitute possible hazards to personnel and/or the vessel. Mandatory additional class notations are indicatedin the tables referred below.Additional class notations made mandatory for different ship types are also referred in Pt.5.

    2 Structural strength and integrityTable 1 Additional class notations related to structural strength and integrity

    Class notation Qualifier Purpose Application

    1-X

    Strengthened inner bottomfor grab loading andunloading with grab mass X≥ 20 t

    Mandatory for ships withclass notation HC(M), and

    Mandatory for ships withfreeboard length LLL >150 m and carrying solidbulk cargoes having adensity ≥ 1.0 t/m3, unlessGrab(2-X) or Grab(3-X)is assigned

    2-X

    Strengthened inner bottom,and lower part of transversebulkhead for grab loadingand unloading with grabmass X ≥ 20 t

    Grab

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.1 Sec.1

    FiS survey requirements:

    NA

    3-X

    Strengthened inner bottom,and lower part of transversebulkhead and longitudinalbulkhead for grab loadingand unloading with grabmass X ≥ 20 t

    Mandatory for Ore carrierwith class notation OC(M)or OC(H)

    Mandatory for ships withclass notation HC(A),HC(B)or HC(B*)

    HAWeather deck hatch coversstrengthened for heavycargo

    DK Weather deck strengthenedfor heavy cargo

    Strengthened

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.1 Sec.2

    FiS survey requirements:

    NAIB Inner bottom strengthenedfor heavy cargo

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    Class notation Qualifier Purpose Application

    Hot

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.1 Sec.12

    FiS survey requirements:

    NA

    TC

    Cargo tanks designed forhigh temperature cargo witha maximum design cargotemperature of TC in °C

    Mandatory for ships withnotation Tanker forasphalt/bitumen andother oil tankers intendedfor the carriage of liquidcargo at a temperaturehigher than 100°C atatmospheric pressure

    HL

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.1 Sec.3

    FiS survey requirements:

    NA

    ρ

    Tanks or holds strengthenedfor heavy liquid, whereρ denotes the maximumdensity in t/m3 in specifiedcargo tanks

    A

    Strengthened to carry drybulk cargoes of density ≥1.0 t/m3 with specified holdsempty at scantling draught,in addition to HC(B)

    B

    Strengthened to carry drybulk cargoes of density≥ 1.0 t/m3 with all holdsloaded, in addition to HC(C)

    B*

    Strengthened to carry drybulk cargoes of density≥ 1.0 t/m3 with any holdempty at scantling draught

    CStrengthened to carry drybulk cargoes of density <1.0 t/m3

    HC

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.1 Sec.4

    FiS survey requirements:

    NA

    MDesigned to carry dry bulkcargoes as described in theloading manual

    HC with one of thequalifiers A, B, B*, C or Mare mandatory for:

    — General dry cargoship designed forcarriage of solid bulkcargoes, with L ≥ 150m, having minimum fivecargo holds

    — Multi-purpose drycargo ship designedfor carriage of solid bulkcargoes, with L ≥ 150m, having minimum fivecargo holds

    — Bulk carrier withoutCSR notation, with L ≥150 m

    Maximum cargo density

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.1 Sec.4 and DNVGL-RU-SHIP-CSR Sec.1

    FiS survey requirements:

    NA

    ρ Designed for a maximumcargo density ρ in t/m3

    Mandatory for ships withclass notation BC(A),BC(B), HC(A), HC(B) orHC(B*) designed for amaximum cargo density <3.0 t/m3

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    Class notation Qualifier Purpose Application

    No MP

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.1 Sec.4 and DNVGL-RU-SHIP-CSR Sec.1

    FiS survey requirements:

    NA

    Ships not designed forloading and unloading inmultiple ports

    May be applied to shipswith class notation BC(A),BC(B), BC(C), HC(A),HC(B) or HC(C)

    Block loading

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.1 Sec.4 and DNVGL-RU-SHIP-CSR Sec.1

    FiS requirements:

    NA

    Ships intended to operate inalternate block condition

    May be applied to shipswith class notation BC(A)or HC(A)

    M

    Strengthened for loadingand unloading in multipleports, in addition to OC(H)notation

    Mandatory for ships withclass notation Ore carrierwith L ≥ 150 m, unlessOC(H) is assigned

    OC

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.1 Sec.5

    FiS requirements:

    NA

    H

    Designed to carry orecargoes in seagoinghomogeneous loadingconditions

    Mandatory for ships withclass notation Ore carrierwith L ≥ 150 m, unlessOC(M) is assigned

    Holds n may be empty

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.1 Sec.4, and DNVGL-RU-SHIP-CSR Sec.1

    FiS survey requirements:

    NA

    Holds may be empty atmaximum draught where nis the identification numberfor each hold that may beempty

    Mandatory for ships withclass notation BC(A),HC(A), HC(M), if alternateloading conditions areincluded in the loadingmanual

    Plus

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.1 Sec.6

    FiS survey requirements:

    NA

    Extended scope of fatiguestrength assessment for hullstructural details

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    Class notation Qualifier Purpose Application

    1

    Fatigue strength control inaccordance with CSA(FLS1)and ultimate strengthcheck based on direct loadcalculations

    2

    Fatigue strength control inaccordance with CSA(FLS2)and ultimate strengthcheck based on direct loadcalculations

    FLS1Fatigue strength controlbased on direct loadcalculations

    CSA

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.1 Sec.7

    FiS requirements:

    NA

    FLS2

    Additional fatigue strengthcontrol based on directload calculations withincreased scope compared toCSA(FLS1)

    Structural strengthverification by meansof global finite elementassessments (FEA) for 25years worldwide operation

    Mandatory for vessels withclass notation Containership having one of thefollowing characteristics:

    — novel design— complex structural

    arrangement— L ≥ 290m— B ≥ 47m— v ≥ 25kn— hatch coaming built of

    VL D47 or VL E47 steelgrades.

    Optional for ships withclass notation Containership not having thecharacteristics above

    Optional for ships withclass notation Generaldry cargo ship or Multi-purpose dry cargo ship

    RSD

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.1 Sec.8

    FiS requirements:

    NA

    X

    Structural strengthverification by means ofglobal FEA for a designoperation time X in years >25 for worldwide operation

    Optional for ships withclass notation Containership

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    Class notation Qualifier Purpose Application

    NAS, X

    Structural strengthverification by means ofglobal FEA for specific NorthAtlantic service NAS and fora design operation time X inyears ≥ 25

    COAT-PSPC

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.1 Sec.9

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6X

    Additional requirementsfor corrosion prevention oftanks and spaces/areas fornewbuildings. The notationprovides compliance withSOLAS Ch.II-1 Pt.A-1,Reg. 3-2 and IMO Res.MSC.215(82), SOLASCh.II-1, Reg. 3-11 and IMORes. MSC.288(87)

    The X denotes:

    B requirements fordedicated seawater ballasttanks of all types of vessels

    C requirements for cargooil tanks of crude oiltankers

    D requirements for doubleside-skin spaces of bulkcarriers

    V requirements for voidspaces of bulk carriers andoil tankers

    COLL

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.1 Sec.10

    FiS survey requirements:

    NA

    XHull side structures speciallyevaluated for collisionimpacts

    The qualifier X shall be anintegral number between1 and 6 and denotes theamount of strengthening ofthe side structures againstcollisions

    WIV

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.1 Sec.11

    FiS survey requirements:

    NA

    Fatigue and ultimate hullgirder strength verifiedunder explicit considerationof wave induced vibrations(Whipping and Springing)

    Container ship

    NAABSA

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.1 Sec.13 [3]

    FiS requirements:

    No

    Structural strength ofbottom structure is verifiedto allow for NAABSAoperations.

    May be applied to shipswith L ≤ 90 m anddesigned with a flatbottom.

    Guidance note:L is the rule length as defined in Pt.3 Ch.1 Sec.4.

    ---e-n-d---o-f---g-u-i-d-a-n-c-e---n-o-t-e---

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    Table 2 Additional class notations related to vessels in accordance with IACS common structuralrules only

    Class notation Qualifier Purpose Application

    CSR

    Mandatory:

    yes

    Design requirements:

    DNVGL-RU-SHIP-CSR Sec.1

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Vessel designed and builtaccording to IACS commonstructural rules.

    Mandatory for:

    Bulk carrier with L ≥ 90m and cross section inaccordance with CSR Pt.1Ch.1 Sec.1 [1.2.1]

    Tanker for oil, Tankerfor oil products,

    with L ≥ 150 m

    A

    Strengthened to carry drybulk cargoes of density ≥1.0 t/m3 with specified holdsempty at scantling draught,in addition to BC(B)

    Mandatory for shipswith class notation Bulkcarrier with L ≥ 150 m,unless BC(B) or BC(C) isassigned

    B

    Strengthened to carry drybulk cargoes of density≥ 1.0 t/m3 with all holdsloaded, in addition to BC(C)

    Mandatory for shipswith class notation Bulkcarrier with L ≥ 150 m,unless BC(A) or BC(C) isassigned

    BC

    Mandatory:

    yes

    Design requirements:

    DNVGL-RU-SHIP-CSR Sec.1

    FiS survey requirements:

    NA

    CStrengthened to carry drybulk cargoes of density< 1.0t/m3

    Mandatory for shipswith class notation Bulkcarrier with L ≥ 150 m,unless BC(A) or BC(B) isassigned

    Grab

    Mandatory:

    yes

    Design requirements:

    DNVGL-RU-SHIP-CSR Sec.1

    FiS survey requirements:

    NA

    XStrengthened for grabloading and discharging withgrab mass X ≥ 20 t

    Mandatory for ships withclass notation BC(A) orBC(B)

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    3 Propulsion, power generation and auxiliary systemsTable 3 Additional class notations related to propulsion, power generation and auxiliary systems

    Class notation Qualifier Purpose Application

    PowerFor vessels where the EESpower is used for electricalpropulsion of the vessel.

    — All-electric vessel, i.e.all main sources ofpower are based onEES.

    — Hybrid vessel whereone of the main sourcesof power is based onEES.

    — Hybrid vessel having anoperational mode wherethe vessel is operatingon EES power only, withthe other main sourceof power in standby.

    — Hybrid vessel usingthe EES system as aredundant source ofpower for main and/or additional classnotations, e.g. dynamicpositioning.

    Battery

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.2 Sec.1

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Safety

    For vessels where theaggregated EES installationin one EES space has anrated capacity of 20 kWh orabove and not having theBattery(Power) notation.

    — Hybrid vessels not usingthe EES power as amain source of power.

    — Hybrid vessels usingthe EES power for onlypeak shaving and/orload levelling.

    — Vessels using EESpower solely whenmoored.

    E0

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.2 Sec.2

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6 [25]

    Unattended machinery space

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    Class notation Qualifier Purpose Application

    ECO

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.2 Sec.2

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6 [25]

    Centralised

    Operated machinery

    Power Fuel cell installations

    Mandatory where thefuel cell power is used foressential, important oremergency services

    FC

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.2 Sec.3

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Safety

    Fuel cell installations wherethe fuel cell power is notused for essential, importantor emergency users

    Mandatory where the fuelused is a gas or a liquidfuel with flash point below60°C

    Fuel

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.2 Sec.4

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6 [18]

    ⱱ, ρ, T

    Fuel treatment andconditioning system, whereⱱ is maximum viscosity incSt at 50°C, ρ is maximumdensity in kg/m3 of thefuel oil at 15°C, and Tis minimum outside airtemperature in °C forwhich the installations areapproved

    Gas fuelled LNG

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.2 Sec.5

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    LNG fuelled engineinstallations Mandatory when installed

    Gas ready

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.2 Sec.8

    FiS survey requirements:

    NA

    DShip is designed for futureconversion to liquefiednatural gas (LNG) fuel

    The qualifier D ismandatory for assigningthe class notation Gasready, and indicates thatthe design for the shipwith LNG as fuel is incompliance with the Gasfuelled notation applicablefor the newbuilding, seeCh.1 Sec.2 [1.3]

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    Class notation Qualifier Purpose Application

    S

    Installed structuralreinforcements to supportthe fuel containment system(LNG fuel tank(s)), andmaterials to support therelevant temperatures areused

    T Installed Fuel containmentsystem (LNG fuel tank(s))

    P

    Installed pipe routing,structural arrangements forbunkering station, and gasvalve unit space

    MEC Main engine(s) installed canbe converted to dual fuel

    The qualifier MEC ismandatory for assigningthe class notation Gasready. MEI can be used asan alternative

    MEI Main engine(s) installed canbe operated on gas fuel

    AEC Auxiliary engine(s) installedcan be converted to dual fuel

    The auxiliary enginecapacity after conversionshall be sufficient for theship power balance

    AEI Auxiliary engines installedcan be operated on gas fuel

    B Boilers installed are capableof burning gas fuel

    MISC

    Additional systems andequipment are installed onboard from newbuildingstage

    LFL fuelled

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.2 Sec.6

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Low flashpoint liquid fuelledengine installations Mandatory when installed

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    Class notation Qualifier Purpose Application

    1

    Main and alternativepropulsion is provided by acommon propulsion system(one propeller, one shaftand one rudder/steeringgear) with redundant primemovers or two or morepropellers

    2

    Propulsion and steering areof a redundant design withtwo (or more) propellers inparallel operation

    3

    Propulsion and steering areof a redundant design withtwo (or more) propellersin parallel operation andseparated by watertightA-60 bulkheads

    x

    % of the propulsion powerand where relevant,associated steering system,can be restored andmaintained after singlefailure

    Mandatory for RP(1),RP(2), and RP(3)

    RP

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.2 Sec.7

    FiS survey requirements:

    NA

    +

    Propulsion power andsteering capacity ismaintained withoutdisruption upon any singlefailure

    D Ready for installation of adry scrubber system

    C Ready for installation of awet closed scrubber system

    H Ready for installation of awet hybrid scrubber system

    O Ready for installation of awet open scrubber system

    Mandatory, mutuallyexclusive qualifiers

    IL

    Ready for in-line installationof scrubber system with oneindividual linear scrubberunit per consumer

    Scrubber ready

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.2 Sec.9

    FiS survey requirements:

    NA

    MI

    Ready for installation ofscrubber system withmultiple inlets to one ormore scrubber units

    Mandatory, mutuallyexclusive qualifiers

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    Class notation Qualifier Purpose Application

    HS

    Structural supports and shipstructures are prepared forinstallation of a scrubbersystem at newbuilding stage

    R

    Review of the futurescrubber installation systemfor compliance according torelevant class rules

    Complete review accordingto main class rules.Includes piping andelectrical systems. Controland monitoring verificationis limited

    MISC

    An agreed number ofsystems and or componentsare included fromnewbuilding stage andfollowed up by the Societythroughout the new buildingprocess

    Certification and installationof parts of the scrubbersystems before deliverybased on agreementbetween owner and yard,with detailed list providedto Society for acceptance

    S

    The future scrubberinstallation complies withMarpol annex 6 regulation 4and 14, and MEPC.259(68)

    If the Society is authorizedby the Flag Administrationto issue the IAPPcertificate. Reviewaccording to IMO resolutionMEPC.259(68)

    1

    Intended for propulsionsystems installed on vesselswith conventional hull formsand incorporates enhancedaft bearing performanceduring normal and turningoperating conditions

    Shaft align

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.2 Sec.10

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6 [38]

    2

    Intended for propulsionsystems requiring additionalcalculations to estimatehydrodynamic propellerloads during turningconditions. Typicalinstallations are vessels withnon-conventional hull formssuch as asymmetric stern,twin skeg, etc.

    SRTPMandatory:

    yes

    Design requirements:

    Pt.6 Ch.2 Sec.11

    FiS survey requirements:

    Increased safety level ofpassenger ships throughmore redundant systemarrangements, providingincreased robustness andfault tolerance.

    Mandatory for passengersships, SPS ships and navalvessels in accordance withPt.6 Ch.2 Sec.11 [1.4]

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    Class notation Qualifier Purpose Application

    WAPSMandatory:

    no

    Design requirements:

    Pt.6 Ch.2 Sec.12

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6

    Wind assisted propulsionsystems installed onseagoing ships

    Gas fuelled LPGMandatory:

    yes

    Design requirements:

    Pt.6 Ch.2 Sec.13

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    LPG fuelled engineinstallations Mandatory when installed

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    4 Navigation and manoeuvringTable 4 Additional class notations related to navigation and manoeuvring

    Class notation Qualifier Purpose Application

    AUTS Dynamic positioning systemwith no redundancy

    Includes single DP controlsystem and manual leverscontrol back-up

    AUT

    Dynamic positioning systemwith no redundancy.Provides higher availabilityand robustness compared toDPS(1)

    Includes single DP controlsystem, single joystickcontrol system and manuallevers control back-up

    AUTR

    Dynamic positioning systemwith redundancy in technicaldesign. Provides higheravailability and robustnesscompared to DPS(2)

    Includes redundant DPcontrol system, singlejoystick control system andmanual levers control back-up

    AUTRO

    Dynamic positioning systemwith redundancy andseparation in technicaldesign. Provides higheravailability and robustnesscompared to DPS(3)

    Includes redundant DPcontrol system, singlejoystick control system andmanual levers control back-up. In addition a singleDP control system in aseparated back-up controlspace

    E

    Dynamic positioning systemwith enhanced reliability.Position and heading keepingability meets intentionscomparable to or exceedingDPS(2)

    Includes redundant DPcontrol system and singleindependent alternative DPcontrol system and manuallevers control back-up

    Provides flexibility andincreased availability ofpower and thrust by use ofconnected power systems,standby start and change-over of generator sets andthrusters

    ER

    Dynamic positioning systemwith enhanced reliability.Position and heading keepingability meets intentionscomparable to or DPS(2)and DPS(3) (depending onwhich failure mode beingevaluated)

    Includes, in addition to theproperties of qualifier E,fire resistant separationbetween redundancygroups, which in addition iswatertight below main deck

    DYNPOS

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.3 Sec.1 and Pt.6 Ch.3Sec.2

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6 [12]

    AAnnual survey to be carriedout in accordance with scopefor renewal survey

    In combination withqualifiers AUTR, AUTRO,E, ER

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    Class notation Qualifier Purpose Application

    1

    Dynamic positioningsystem with no redundancycorresponding to IMOguideline IMO MSC/Circ.645“Guidelines for vesselswith dynamic positioningsystems” DP equipmentclass 1

    Includes single DP controlsystem, single joystickcontrol system and manuallevers control back-up

    2

    Dynamic positioning systemwith redundancy in technicaldesign corresponding to IMOguideline IMO MSC/Circ.645“Guidelines for vesselswith dynamic positioningsystems” DP equipmentclass 2

    Includes redundant DPcontrol system, singlejoystick control system andmanual levers control back-up

    3

    Dynamic positioning systemwith redundancy andseparation in technicaldesign corresponding to IMOguideline IMO MSC/Circ.645“Guidelines for vesselswith dynamic positioningsystems” DP equipmentclass 3

    Includes redundant DPcontrol system, singlejoystick control system andmanual levers control back-up. In addition a singleDP control system in aseparated back-up controlspace

    DPS

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.3 Sec.1

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6 [12]

    AAnnual survey to be carriedout in accordance with scopefor renewal survey

    In combination withqualifiers 2 and 3

    NAV Basic requirements

    OCEnhanced requirementsfor vessels operating worldwide

    AWEnhanced requirements forvessels operating in coastaland narrow waters

    OSV

    Requirements withinbridge design, bridgeinstrumentation andworkstation arrangements.Vessels with NAUT willcomply with the principlesand aims of SOLAS V/15 andIMO MSC/Circ.982 Vessels operating as

    service vessels for offshoreindustry

    NAUT

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.3

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6 [13]

    INS+

    Enhanced multi functionalworkstation arrangementfor integrated navigationalsystems

    Vessels with class notationNAUT

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    5 Cargo operationsTable 5 Additional class notations related to cargo operations

    Class notation Qualifier Purpose Application

    Bow loading

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.4 Sec.1

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2

    Bow loading arrangement Mandatory for Tanker foroil when installed

    CCO

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.4 Sec.2

    FiS survey requirements:

    Pt.7 Ch.1 Sec.4

    Centralised cargo control forliquid cargoes

    For vessels with classnotation Tanker for oil orTanker for oil productsor Tanker for chemicals

    EL

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.4 Sec.3

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6 [30]

    Easy loading of cargo holds Ore carrier

    ETC

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.4 Sec.4

    FiS survey requirements:

    NA

    Effective tank cleaning

    MCDK

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.4 Sec.5

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2

    Movable car decks

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    Class notation Qualifier Purpose Application

    Loading computer system

    Mandatory if a loadingcomputer calculatingstability and/or hullstrength is installed

    LCS

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.4 Sec.6

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6

    DC

    Loading computer systemto assist the master as adecision aid under damageconditions

    Optional

    Regasification plant Mandatory for vessels fittedwith regasification plant.REGAS

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.4 Sec.7

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6 [39]

    ESAdditional requirementsfor enhanced safety ofregasification plant.

    Optional

    RCP

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.4 Sec.8

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6 [20]

    X/Y

    Refrigerated containerstowage positions, whereX represents total numberof certified refrigeratedstowage positions, andY is the percentage ofrefrigerated containerscarrying fruit/chilledcargoes. Y shall be at least20%

    RM

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.4 Sec.9

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6 [4]

    X°C/Y°C sea

    Cargo refrigeration plant,where X°C is lowestchamber temperature and Y°C sea maximum seawatertemperature

    RSCS+

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.4 Sec.10

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Route specific containerstowage on long haul as wellas costal voyages based onweather forecasts

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    Class notation Qualifier Purpose Application

    STL

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.4 Sec.1

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3 and Pt.7 Ch.1 Sec.4

    Submerged turret loadingsystem Mandatory when installed

    1

    Systems for control ofvapour emission from cargotanks and in compliance withIMO MSC/Circ. 585

    2

    Systems for control ofvapour emission from cargotanks and in compliancewith IMO MSC/Circ. 585 andUSCG CFR 46 Part 39

    3

    Systems for onboard vapourprocessing with a minimumrecovery rate of 78% of non-methane VOC

    For vessels with classnotation Tanker for oil orTanker for oil productsor Tanker for chemicals

    B Additional requirements tovapour balancing

    For vessels with classnotation VCS(1) orVCS(2)

    VCS

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.4 Sec.11

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6 [15]

    L, X%

    For installations used onladen voyages only, witha recovery rate of X% ofNMVOC.

    For vessels with classnotation Tanker for oil orTanker for oil productsor Tanker for chemicals

    May be combined withVCS(3).

    Carriage of fruits andvegetables under controlledatmosphere

    CA

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.4 Sec.12

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6

    port.

    Carriage of fruits andvegetables under controlledatmosphere, using aportable device

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    Class notation Qualifier Purpose Application

    C

    Designates the coverageof the washing machinesin %. The coverage shallnot be less than 80 %. Theinserted value shall be basedon the tank with the lowestcoverage.

    S

    Designates the strippingefficiency. I.e. the amount ofresidue left in a cargo tankand associated piping afterdischarge and stripping inm3. The amount shall notexceed 3 m3 per cargo tank.The inserted value shall bebased on the test resultsfor the tank with the loweststripping efficiency.

    ITC

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.4 Sec.13

    FiS survey requirements:

    NA

    A

    Designates the upwardfacing area of horizontalstructures and piping in m2

    where cargo and sludge mayaccumulate. The insertedvalue shall be based onthe tank with the largesthorizontal area.

    Tanker for oil

    Tanker for oil products

    The unit is preparedfor future regasificationoperation and installationof a regasification plantonboard based on generalprinciples of regasificationplant design. generalprinciples of regasificationplant design.

    C

    The unit is preparedfor future regasificationoperation and installationof a regasification plantonboard with an selectedregasification plant design.

    SC The unit has carried outsloshing calculations

    SREquipped with cargocontainment system ofreinforced configuration

    IP Increased pressure for cargotanks for REGAS operation

    REGAS ready

    Mandatory:

    No

    Design requirements:

    Pt.6 Ch.4 Sec.14

    FiS survey requirements:

    NA

    ES Enhanced safety review

    Gas carriers plannedand partly prepared forlater installation of aregasification plant incompliance with classnotation REGAS orREGAS(ES)

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    6 Equipment and design featuresTable 6 Additional class notations related to equipment and design features

    Class notation Qualifier Purpose Application

    Container

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.5 Sec.1

    FiS survey requirements:

    Pt.7 Ch.1 Sec.4

    Equipped for carriage ofcontainersFor vessels other thanContainer ship

    Hatchcoverless

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.5 Sec.2

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2

    For hatchcoverless containerships, multi-purpose drycargo ships and generalcargo ships equipped withthe appropriate facilities tooperate without or with openhatch covers

    Mandatory for vessels withclass notation Containership, General dry cargoship or Multi-purpose drycargo ship intended foroperating without or withopen hatch covers

    Crane

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.5 Sec.3

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6

    Onboard crane Onboard crane certified bythe Society

    +

    Selected and specifiedsystem(s) are covered andimplemented as requiredby Pt.6 Ch.5 Sec.21 [3]

    Cyber secure

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.5 Sec.21

    FiS survey requirements:

    Basic

    Establish barriers to prevent,mitigate and respond tocyber-attacks. Establishbarriers to prevent, mitigateand respond to cyber-attacks

    The requirements arebased on IEC 62443-3-3security level 1 withspecific adaptations forthe maritime industry.The requirements arebased on IEC 62443-3-3security level 1 withspecific adaptations for themaritime industry

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    Class notation Qualifier Purpose Application

    Advanced

    The requirements arebased on IEC 62443-3-3security level 3 withspecific adaptations forthe maritime industry.The requirements arebased on IEC 62443-3-3security level 3 withspecific adaptations for themaritime industry

    A Additional fire protection inaccommodation area

    C Additional fire protection incargo area

    M Additional fire protection formachinery spaces - general

    F

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.5 Sec.4

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6

    M-PAdditional measures formachinery spaces - fireprevention

    Helicopter deck

    S Additional requirements tovessel safety

    H Additional requirements tohelicopter safety

    F Additional requirements tohelicopter facility

    HELDK

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.5 Sec.5

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6

    CAA-N

    Helicopter facility has beenevaluated for additionalrequirements specified bythe Norwegian Civil AviationAuthorities

    SF

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.5 Sec.6

    FiS survey requirements:

    NA

    Compliance withrequirements to damagestability

    Offshore service vessel

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    Class notation Qualifier Purpose Application

    SPS

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.5 Sec.7

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6

    Ships carrying specialpersonnel who are neithercrew members norpassengers

    Inert

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.5 Sec.8

    FiS survey requirements:

    Pt.7 Ch.1 Sec.2 and Pt.7 Ch.1Sec.4

    Inert gas systemMandatory if installed onTanker for oil DWT < 8000 ton

    1Designed for carriage ofliquid with flashpoint lowerthan 60°C

    LFL

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.5 Sec.9

    FiS survey requirements:

    NA

    2Designed for carriage ofliquid with flashpoint lowerthan 43°C

    All ships except Tankerfor oil and Tanker forchemicals

    B

    Arranged for carriage of soliddangerous goods in bulkin compliance with SOLASReg.II-2/19

    DG

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.5 Sec.10

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6

    P

    Arranged for carriageof dangerous goods inpackaged form in compliancewith SOLAS Reg.II-2/19

    DBC

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.5 Sec.10

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6

    Arranged for carriage ofsolid dangerous goods inbulk in compliance with thetechnical provisions of theIMSBC code

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    Class notation Qualifier Purpose Application

    OILREC

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.5 Sec.11

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6

    Recovered oil reception andtransportationAll ships except Tanker foroil

    SPM

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.5 Sec.12

    FiS survey requirements:

    NA

    Single point mooring Mandatory for Tanker foroil when installed

    DP Enhanced verification ofdynamic positioning

    TAM

    Enhanced verification ofthruster assisted mooring orautomatic thruster assistedmooring systems

    PMS Enhanced verification ofpower management system

    SPTEnhanced verification ofsteering, propulsion andthruster system

    ICSEnhanced verification ofintegrated control andmonitoring system

    DRILL Enhanced verification ofdrilling control system

    BOP Enhanced verification ofblow out prevention system

    Crane Enhanced verification ofcrane control system

    ESV

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.5 Sec.13

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6

    HIL-IS

    “Hardware-In-the-Loop” (HIL) Testing whereHIL test package is providedby independent HIL supplier

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    Class notation Qualifier Purpose Application

    HIL-DS

    “Hardware-In-the-Loop” (HIL) Testing whereHIL test program packageand HIL test package reportare provided by independentHIL supplier and HIL testsimulator package isprovided by the organizationdelivering the HIL targetsystem

    Equipped with dedicatedgas fuel transfer equipmentfor supply of bunker to gasfuelled ships on a regularbasis

    VR-x

    Equipped for handling ofexcess vapour return fromthe receiving ship withvapour recovery capacity ofx kW

    EPC Equipped with enhancedpositioning control system

    Gas bunker

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.5 Sec.14

    FiS survey requirements:

    NA

    TC Equipped with enhancedtransfer control system

    Tanker for liquefiedgas or Tanker for C andbarges specifically intendedfor carriage of liquefied gas

    AA

    Ship designed for carriageof either oil cargoes, liquidcarbon dioxide- and liquidnitrogen and/or dry mud-and cement

    P Ship designed for carriage ofpollution hazards cargoes.

    S Ship designed for carriage ofsafety hazardous cargoes.

    Platform supply

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.5 Sec.15

    FiS survey requirements:

    NA

    T Ship designed for carriage oftoxic cargoes.

    Mandatory for vesselsintended to carry cargoescovered by Pt.6 Ch.5Sec.15

    Vessel with permanentinstalled gangway where thegangway is certified by DNVGL

    Walk2work

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.5 Sec.16

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6 [40]

    Operability

    Denotes the maximum seaconditions in which theoffshore gangway systemmay be safely operated.

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    Class notation Qualifier Purpose Application

    Vessel intended to havegangway system installedonboard. The gangway isoutside the scope of thenotation.

    Walk2workready

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.5 Sec.16

    FiS survey requirements:

    Pt.7 Ch.1 Sec.6 [40]Operability

    Denotes the maximum seaconditions in which theoffshore gangway systemmay be safely operated.

    ADW

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.5 Sec.17

    FiS survey requirements:

    NA

    Ships intended for anchoringin deep and unshelteredwater

    Cat1Ships strengthened forliquefaction in designcategory 1 group A cargo

    BCLIQ

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.5 Sec.18

    FiS survey requirements:

    NA

    Cat2Ships strengthened forliquefaction in designcategory 2 group A cargo

    BCLIQ with one ofqualifiers, either Cat1 orCat2, is mandatory forships intended for thecarriage of solid bulk cargoshipped at a moisturecontent in excess of itstransportable moisture limitwhich may liquefy during avoyage

    Vessels arranged with a gasfired power plant for theproduction and export ofelectrical energy

    Performance

    Additional performancerequirements related tothe rated electrical powerdelivered from the powerplant

    Optional qualifier for Gaspower plant

    PRated electrical power, P,[MW] delivered from thepower plant

    Optional qualifier whenPerformance is assigned

    VSupply voltage, V [kV]delivered from the powerplant

    Optional qualifier whenPerformance is assigned

    Gas power plant

    Mandatory:

    yes

    Design requirements:

    Pt.6 Ch.5 Sec.20

    FiS survey requirements:

    NA

    fSupply frequency, f, [Hz]delivered from the powerplant

    Optional qualifier whenPerformance is assigned

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    Rules for classification: Ships — DNVGL-RU-SHIP Pt.1 Ch.2. Edition July 2019 Page 50Class notations

    DNV GL AS

    Class notation Qualifier Purpose Application

    RO/RO

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.5 Sec.19

    FiS survey requirements:

    NA

    Designed and arranged forroll-on and roll-of cargohandling and transportationof rolling vehicles

    For ships other than RO/RO ship and Car carrier

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    Rules for classification: Ships — DNVGL-RU-SHIP Pt.1 Ch.2. Edition July 2019 Page 51Class notations

    DNV GL AS

    7 Cold climateTable 7 Additional class notations related to cold climate

    Class notation Qualifier Purpose Application

    1A*FHigh powered vessels forregular traffic in heavy Balticice

    Vessels constructedaccording to Finnish-Swedish ice rules

    1A*Vessels intended fornavigation in ice-infestedwaters

    Constructed according toFinnish- Swedish ice rules(1A Super). Ice thickness1.0 m

    1AVessels intended fornavigation in ice-infestedwaters

    Constructed according toFinnish- Swedish ice rules(1A). Ice thickness 0.8 m

    1BVessels intended fornavigation in ice-infestedwaters

    Constructed according toFinnish- Swedish ice rules(1B). Ice thickness 0.6 m

    1CVessels intended fornavigation in ice-infestedwaters

    Constructed according toFinnish- Swedish ice rules(1C). Ice thickness 0.4 m

    CVessels intended fornavigation in light iceconditions

    Ice

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.6 Sec.1 and Pt.6 Ch.6Sec.2

    FiS survey requirements:

    NA

    EVessels intended fornavigation in light localiseddrift ice

    C

    Operation in ice free waterswithin polar waters

    Operation in open waterswithin polar waters

    Operation in ice conditionsless severe than thoseincluded in categories A andB within polar waters

    B

    Operation in other iceconditions within polarwaters as listed in Pt.6 Ch.6Sec.4 Table 6

    Polar

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.6 Sec.4

    FiS survey requirements:

    NA

    A

    Operation in other iceconditions within polarwaters as listed in Pt.6 Ch.6Sec.4 Table 6

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    Rules for classification: Ships — DNVGL-RU-SHIP Pt.1 Ch.2. Edition July 2019 Page 52Class notations

    DNV GL AS

    Class notation Qualifier Purpose Application

    PST Polar service temperature,PST, in °C

    Mandatory when the shipis intended to operatein low air temperaturewhere mean daily lowtemperature (MDLT) isbelow -10°C

    1Vessels intended fornavigation in ice-infestedpolar waters

    Year-round operation in allpolar waters

    2Vessels intended fornavigation in ice-infestedpolar waters

    Year-round operation inmoderate multi-year iceconditions

    3Vessels intended fornavigation in ice-infestedpolar waters

    Year-round operation insecond-year ice whichmay include multi-year iceinclusions

    4Vessels intended fornavigation in ice-infestedpolar waters

    Year-round operationin thick first-year icewhich may include old iceinclusions

    5Vessels intended fornavigation in ice-infestedpolar waters

    Year-round operation inmedium first-year icewhich may include old iceinclusions

    6Vessels intended fornavigation in ice-infestedpolar waters

    Summer/autumn operationin medium first-year icewhich may include old iceinclusions

    PC

    Mandatory:

    no

    Design requirements:

    Pt.6 Ch.6 Sec.6

    FiS survey requirements:

    NA

    7Vessels intended fornavigation in ice-infestedpolar waters

    Summer/autumn operationin thin first-year icewhich may include old iceinclusions

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