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

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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

<None> 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


Pt.5 Ch.1



<None> 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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Bulk carrier

Mandatory:

yes


Pt.5 Ch.1



<None> 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


Pt.5 Ch.1



<None> 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


Pt.5 Ch.1



<None> 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


Pt.5 Ch.1



<None> 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


Container ship

Mandatory:

yes


Pt.5 Ch.2



<None> 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


RO/RO ship

Mandatory:

no


Pt.5 Ch.3



<None>Loading and unloading thecargo by Roll on/ Roll off(RO/RO)

Car carrier

Mandatory:

no


Pt.5 Ch.3



<None> Carriage of vehicles

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5 Passenger shipsTable 4 Ship type notations for passenger ships


Passenger ship

Mandatory:

yes


Pt.5 Ch.4


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

<None> Carriage of passenger More than 12 passengers

A Carriage of passengers andvehicles

More than 12 passengersand vehicles on encloseddecks

Ferry

Mandatory:

yes


Pt.5 Ch.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


Tanker for oil

Mandatory:

yes


Pt.5 Ch.5



<None> Carriage of oil in bulk For carriage of oil

Tanker for oil products

Mandatory:

yes


Pt.5 Ch.5



<None> Carriage of oil products inbulk

For carriage of all oilproducts except crude oil

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Barge for oil

Mandatory:

yes


Pt.5 Ch.5,

Pt.5 Ch.11



<None> Carriage of oil in bulk For carriage of oil

Barge for oil products

Mandatory:

yes


Pt.5 Ch.5,

Pt.5 Ch.11



<None> Carriage of oil products inbulk

For carriage of all oilproducts except crude oil

Bulk carrier or tanker for oil

Mandatory:

yes


Pt.5 Ch.1 Sec.3

Pt.5 Ch.5



<None>Carriage of dry bulk cargoalternating with carriage ofoil

Combination carrier

Tanker for oil products withflashpoint above 60°C

Mandatory:

yes


Pt.5 Ch.5



<None>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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Tanker for asphalt/bitumen

Mandatory:

yes


Pt.5 Ch.1 Sec.3

Pt.6 Ch.1 Sec.12



<None> Carriage of liquid asphalt/bitumen in bulk

For carriage of liquidasphalt/bitumen in bulk

Barge for oil products withflashpoint above 60°C

Mandatory:

yes


Pt.5 Ch.5,

Pt.5 Ch.11



<None>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


Pt.5 Ch.1 Sec.2

Pt.5 Ch.11

Pt.6 Ch.1 Sec.12



<None> Carriage of liquid asphalt/bitumen in bulk

For carriage of liquidasphalt/bitumen in bulk

Bulk carrier or Tanker foroil products

Mandatory:

yes


Pt.5 Ch.1 Sec.3

Pt.5 Ch.5



<None>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


Tanker for C

Mandatory:

yes


Pt.5 Ch.6



<None>

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


Pt.5 Ch.6



<None> 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


Pt.5 Ch.6

Pt.5 Ch.11



<None> 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


Pt.5 Ch.6

Pt.5 Ch.11



<None>

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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Tanker for chemicals withflashpoint above 60°C

Mandatory:

yes


Pt.5 Ch.6



<None>

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


Pt.5 Ch.6

Pt.5 Ch.11



<None>

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


Tanker for liquefied gas

Mandatory:

yes


Pt.5 Ch.7



<None> Carriage of liquefied gas

Tanker for C

Mandatory:

yes


Pt.5 Ch.7



<None>

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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Barge for liquefied gas

Mandatory:

yes


Pt.5 Ch.7

Pt.5 Ch.11



<None> Carriage of liquefied gas

Barge for C

Mandatory:

yes


Pt.5 Ch.7

Pt.5 Ch.11



<None>

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


Pt.5 Ch.7 Sec.25



<None>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


Pt.5 Ch.7 Sec.25



<None>

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


Tanker for compressednatural gas

Mandatory:

yes


Pt.5 Ch.8



<None> Carriage of compressednatural gas

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


<None>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


Pt.5 Ch.9


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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<None> Rescue operations andstandby services

Standby vessel

Mandatory:

no


Pt.5 Ch.9



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


Crane vessel

Mandatory:

no


Pt.5 Ch.10 Sec.2


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

<None> Crane operations

Cable laying vessel

Mandatory:

no


Pt.5 Ch.10 Sec.3



<None> Cable laying

Pipe laying vessel

Mandatory:

no


Pt.5 Ch.10 Sec.4



<None> Pipe laying

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Semi–submersible heavytransport vessel

Mandatory:

yes


Pt.5 Ch.10 Sec.5



<None> 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


Pt.5 Ch.10 Sec.6



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

<None> Seismographic research Requirements to hullarrangement and strength

Seismic vessel

Mandatory:

no


Pt.5 Ch.10 Sec.7



A Seismographic research Requirements to systemsand equipment

Well stimulation vessel

Mandatory:

no


Pt.5 Ch.10 Sec.8



<None> Well stimulation

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<None> 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


Pt.5 Ch.10 Sec.9



Capability Fire fighting capability

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

Icebreaker

Mandatory:

no


Pt.5 Ch.10 Sec.10



<None> Ice breaking

Tug

Mandatory:

no


Pt.5 Ch.10 Sec.11



<None> Towing of other vessels bytowlines

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F

Steering and manoeuvringoperations of other vesselsby towlines

Escort rating numbers basedon full scale test

N


Escort rating numbers basedon numerical calculations

O


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


Pt.5 Ch.10 Sec.11



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

<None> DredgingDredger

Mandatory:

no


Pt.5 Ch.10 Sec.12



Suction Suction dredging

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Pusher

Mandatory:

no


Pt.5 Ch.10 Sec.13



<None> Pushing

Slop reception vessel

Mandatory:

no


Pt.5 Ch.10 Sec.14



<None>Floating facilities forreception and processing ofoily water and oil residue

Reefer

Mandatory:

no


Pt.5 Ch.10 Sec.15


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

<None>

Carriage of refrigerateddry cargo and fruit andvegetables under controlledatmosphere

Refrigerated fruit juicecarrier

Mandatory:

yes


Pt.5 Ch.10 Sec.15


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

<None>Carriage of refrigerated fruitjuices and similar liquidcargoes in bulk

Tanker for potable water

Mandatory:

no


Pt.5 Ch.10 Sec.15



<None> Carriage of potable water inbulk.

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


<None> Vessels with cargo hold

Hopper

Vessels for dredgingoperations with self-unloading through thebottom

Barge

Mandatory:

yes


Pt.5 Ch.11 Sec.2


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


Pt.5 Ch.11 Sec.3



<None> 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


<None> Fishing

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

Fishing vessel

Mandatory:

no


Pt.5 Ch.12



N

Fishing vessel complyingwith the requirements ofthe Norwegian MaritimeDirectorate (NMD)

<None> Fishing Stern trawling

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

Stern trawler

Mandatory:

no


Pt.5 Ch.12



N

Fishing vessel complyingwith the requirements ofthe Norwegian MaritimeDirectorate (NMD)

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


Naval

Mandatory:

yes


Pt.5 Ch.13



<None> Naval operationsNaval flagged vessels andadministered by a nationalnaval administration

Naval landing craft

Mandatory:

yes


DNVGL-RU-HSLC Pt.5 Ch.8



<None>

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


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


Pt.6 Ch.1 Sec.1


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


Pt.6 Ch.1 Sec.2


NAIB Inner bottom strengthened

for heavy cargo

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Hot

Mandatory:

yes


Pt.6 Ch.1 Sec.12


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


Pt.6 Ch.1 Sec.3


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


Pt.6 Ch.1 Sec.4


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


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


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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No MP

Mandatory:

no




NA

<None>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



FiS requirements:

NA

<None> 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


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


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


NA

<None>

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


Pt.6 Ch.1 Sec.6


NA

<None>Extended scope of fatiguestrength assessment for hullstructural details

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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


Pt.6 Ch.1 Sec.7

FiS requirements:

NA

FLS2

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

<None>

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


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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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


Pt.6 Ch.1 Sec.9


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


Pt.6 Ch.1 Sec.10


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


Pt.6 Ch.1 Sec.11


NA

<None>

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

Container ship

NAABSA

Mandatory:

no


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

FiS requirements:

No

<None>

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


CSR

Mandatory:

yes


DNVGL-RU-SHIP-CSR Sec.1



<None>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




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




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


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


Pt.6 Ch.2 Sec.1



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


Pt.6 Ch.2 Sec.2


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

<None> Unattended machinery space

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ECO

Mandatory:

no


Pt.6 Ch.2 Sec.2


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

<None>Centralised

Operated machinery

Power Fuel cell installations

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

FC

Mandatory:

yes


Pt.6 Ch.2 Sec.3



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


Pt.6 Ch.2 Sec.4


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


Pt.6 Ch.2 Sec.5



<None> LNG fuelled engineinstallations Mandatory when installed

Gas ready

Mandatory:

no


Pt.6 Ch.2 Sec.8


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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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


Pt.6 Ch.2 Sec.6



<None> Low flashpoint liquid fuelledengine installations Mandatory when installed

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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


Pt.6 Ch.2 Sec.7


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


Pt.6 Ch.2 Sec.9


NA

MI

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

Mandatory, mutuallyexclusive qualifiers

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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


Pt.6 Ch.2 Sec.10


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


Pt.6 Ch.2 Sec.11


<None>

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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WAPSMandatory:

no


Pt.6 Ch.2 Sec.12


Pt.7 Ch.1 Sec.6

<None>Wind assisted propulsionsystems installed onseagoing ships

Gas fuelled LPGMandatory:

yes


Pt.6 Ch.2 Sec.13



<None> LPG fuelled engineinstallations Mandatory when installed

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


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




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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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


Pt.6 Ch.3 Sec.1


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


Pt.6 Ch.3


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


Bow loading

Mandatory:

yes


Pt.6 Ch.4 Sec.1


Pt.7 Ch.1 Sec.2

<None> Bow loading arrangement Mandatory for Tanker foroil when installed

CCO

Mandatory:

no


Pt.6 Ch.4 Sec.2


Pt.7 Ch.1 Sec.4

<None> Centralised cargo control forliquid cargoes

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

EL

Mandatory:

no


Pt.6 Ch.4 Sec.3


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

<None> Easy loading of cargo holds Ore carrier

ETC

Mandatory:

no


Pt.6 Ch.4 Sec.4


NA

<None> Effective tank cleaning

MCDK

Mandatory:

no


Pt.6 Ch.4 Sec.5


Pt.7 Ch.1 Sec.2

<None> Movable car decks

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<None> Loading computer system

Mandatory if a loadingcomputer calculatingstability and/or hullstrength is installed

LCS

Mandatory:

yes


Pt.6 Ch.4 Sec.6


Pt.7 Ch.1 Sec.6

DC

Loading computer systemto assist the master as adecision aid under damageconditions

Optional

<None> Regasification plant Mandatory for vessels fittedwith regasification plant.

REGAS

Mandatory:

yes


Pt.6 Ch.4 Sec.7


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

ESAdditional requirementsfor enhanced safety ofregasification plant.

Optional

RCP

Mandatory:

no


Pt.6 Ch.4 Sec.8


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


Pt.6 Ch.4 Sec.9


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


Pt.6 Ch.4 Sec.10



<None>

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

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STL

Mandatory:

yes


Pt.6 Ch.4 Sec.1



<None> 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


B Additional requirements tovapour balancing

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

VCS

Mandatory:

no


Pt.6 Ch.4 Sec.11


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

L, X%

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


May be combined withVCS(3).

<None>Carriage of fruits andvegetables under controlledatmosphere

CA

Mandatory:

no


Pt.6 Ch.4 Sec.12


Pt.7 Ch.1 Sec.6

port.

Carriage of fruits andvegetables under controlledatmosphere, using aportable device

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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


Pt.6 Ch.4 Sec.13


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

<None>

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


Pt.6 Ch.4 Sec.14


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


Container

Mandatory:

no


Pt.6 Ch.5 Sec.1


Pt.7 Ch.1 Sec.4

<None> Equipped for carriage ofcontainers

For vessels other thanContainer ship

Hatchcoverless

Mandatory:

yes


Pt.6 Ch.5 Sec.2


Pt.7 Ch.1 Sec.2

<None>

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


Pt.6 Ch.5 Sec.3


Pt.7 Ch.1 Sec.6

<None> 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


Pt.6 Ch.5 Sec.21


<None>

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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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


Pt.6 Ch.5 Sec.4


Pt.7 Ch.1 Sec.6

M-PAdditional measures formachinery spaces - fireprevention

<None> Helicopter deck

S Additional requirements tovessel safety

H Additional requirements tohelicopter safety

F Additional requirements tohelicopter facility

HELDK

Mandatory:

no


Pt.6 Ch.5 Sec.5


Pt.7 Ch.1 Sec.6

CAA-N

Helicopter facility has beenevaluated for additionalrequirements specified bythe Norwegian Civil AviationAuthorities

SF

Mandatory:

no


Pt.6 Ch.5 Sec.6


NA

<None>Compliance withrequirements to damagestability

Offshore service vessel

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SPS

Mandatory:

no


Pt.6 Ch.5 Sec.7


Pt.7 Ch.1 Sec.6

<None>

Ships carrying specialpersonnel who are neithercrew members norpassengers

Inert

Mandatory:

yes


Pt.6 Ch.5 Sec.8



<None> Inert gas systemMandatory if installed onTanker for oil DWT < 8000 ton

1Designed for carriage ofliquid with flashpoint lowerthan 60°C

LFL

Mandatory:

no


Pt.6 Ch.5 Sec.9


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


Pt.6 Ch.5 Sec.10


Pt.7 Ch.1 Sec.6

P

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

DBC

Mandatory:

no


Pt.6 Ch.5 Sec.10


Pt.7 Ch.1 Sec.6

<None>

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

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OILREC

Mandatory:

no


Pt.6 Ch.5 Sec.11


Pt.7 Ch.1 Sec.6

<None> Recovered oil reception andtransportation

All ships except Tanker foroil

SPM

Mandatory:

yes


Pt.6 Ch.5 Sec.12


NA

<None> 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


Pt.6 Ch.5 Sec.13


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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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

<None>

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


Pt.6 Ch.5 Sec.14


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


Pt.6 Ch.5 Sec.15


NA

T Ship designed for carriage oftoxic cargoes.

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

<None>

Vessel with permanentinstalled gangway where thegangway is certified by DNVGL

Walk2work

Mandatory:

no


Pt.6 Ch.5 Sec.16


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

Operability

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

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<None>

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

Walk2workready

Mandatory:

no


Pt.6 Ch.5 Sec.16


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

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

ADW

Mandatory:

no


Pt.6 Ch.5 Sec.17


NA

<None>Ships intended for anchoringin deep and unshelteredwater

Cat1Ships strengthened forliquefaction in designcategory 1 group A cargo

BCLIQ

Mandatory:

yes


Pt.6 Ch.5 Sec.18


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

<None>

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


Gas power plant

Mandatory:

yes


Pt.6 Ch.5 Sec.20


NA

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


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RO/RO

Mandatory:

no


Pt.6 Ch.5 Sec.19


NA

<None>

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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7 Cold climateTable 7 Additional class notations related to cold climate


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




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


Pt.6 Ch.6 Sec.4


NA

A

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

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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


Year-round operation inmoderate multi-year iceconditions


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


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


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


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

PC

Mandatory:

no


Pt.6 Ch.6 Sec.6


NA


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

<None><< Occasional operation in coldclimate for short periods

For ambient temperaturesdown to -20ºC

Winterized

Mandatory:

no


Pt.6 Ch.6 Sec.3


Pt.7 Ch.1 Sec.6

BST

Regular operation in coldclimate for an extendedperiod of time whereBST is the Baltic servicetemperature in °C

For ambient temperaturescolder than -20ºC

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DAT

Mandatory:

yes


Pt.6 Ch.6 Sec.5


NA

t

Design ambient airtemperature suitable forregular service during winterto polar waters, where tdenotes the lowest designambient temperature in °C

Mandatory for shipsintended to operatein areas with low airtemperatures, i.e. designtemperatures colder than-10°C

PC(1)

For ships intended tooperate with stern first in iceinfested polar waters withice class notation PC(1)

Year-round operation in allpolar waters

PC(2)


Year-round operation inmoderate multi-year iceconditions

PC(3)


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

PC(4)


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

PC(5)


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

PC(6)


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

PC(7)


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

Ice(1A*)

For ships intended tooperate with stern first in iceinfested waters with ice classnotation Ice(1A*)

Normally capable ofnavigating in difficult iceconditions without theassistance of icebreakers

DAV

Mandatory:

no


Pt.6 Ch.6 Sec.7


NA

Ice(1A)

For ships intended tooperate with stern first in iceinfested waters with ice classnotation Ice(1A)

Capable of navigating indifficult ice conditions,with the assistanceof icebreakers whennecessary

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Ice(1B)

For ships intended tooperate with stern first in iceinfested waters with ice classnotation Ice(1B)

Capable of navigating inmoderate ice conditions,with the assistanceof icebreakers whennecessary.

Ice(1C)

For ships intended tooperate with stern first in iceinfested waters with ice classnotation Ice(1C)

Capable of navigatingin light ice conditions,with the assistanceof icebreakers whennecessary.

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8 Environmental protection and pollution controlTable 8 Additional class notations related to environmental protection and pollution control


E[m] Ballast water exchange

m denotes method ofexchange as follows:

s - sequential method

f - flow-through method

d - dilution method

BWM

Mandatory:

no


Pt.6 Ch.7 Sec.1


Pt.7 Ch.1 Sec.6T Ballast water treatment

<None>Arrangements for controllingand limiting operationalemissions and discharges

Design

Additional designrequirements for protectionagainst accidents and forlimiting their consequences

Clean

Mandatory:

no


Pt.6 Ch.7 Sec.2


DNVGL-RU-HSLC Pt.7 Ch.1Sec.6 [4]

Tier III

Compliance with the NOxemission requirements ofTier III according to MARPOLAnnex VI, Regulation 13

SOx-ADesigned to operate allmachinery on marinedistillate fuel

ECA

Mandatory:

no


Pt.6 Ch.7 Sec.3


NA

SOx-P

Designed to operatemachinery componentsused while in port on marinedistillate fuel

Fuel and lubrication oilsystem and arrangementsfor meeting regulations inemission control areas

<None>Installations for thereduction of NOx or SOxemissions by novel means.

Applicable for emissionreduction system forNOx and/or SOx by novelmeans which does not fallunder any of the definedadditional qualifiers. Suchsystems shall generallycomply with the principlesof these rules.

Additional qualifiers for NOx reduction systems

ER

Mandatory:

yes


Pt.6 Ch.7 Sec.7

FiS requirements:


SCR

Installations for thereduction of NOx emissionsby selective catalyticreduction systems

Applicable for all vesselswhere SCR systems areinstalled in one or moreexhaust lines

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EGRInstallations for thereduction of NOx emission byrecirculation of exhaust gas

Applicable for all vesselswhere EGR systems areinstalled in one or moreexhaust lines

TIER III

Installations for thereduction of NOx emissionscertified in compliancewith the NOx emissionrequirements of Tier IIIaccording to MARPOL AnnexVI, regulation 13

Additional qualifiers for SOx reduction systems

EGCS open

Installations for removalof SOx by use of seawaterspray without means forrecirculation (open loopscrubber system)

Applicable for all vesselswhere open loop scrubbersystems are installed

EGCS closed

Installations for removal ofSOx by use of water spray ina closed circulation system(closed loop system)

Applicable for all vesselswhere closed loop scrubbersystems are installed

EGCS hybrid

Installations for removalof SOx by use of sea- orfreshwater spray in open orclosed circulation (open andclosed loop system)

Applicable for all vesselswhere any configuration ofhybrid scrubber systemsare installed

EGCS dry

Installations for removal ofSOx by use of a dry mediumthrough which the exhauststream is passed

Applicable for all vesselswhere dry scrubbersystems are installed

Optional additional qualifiers

Enhanced Installations with enhancedavailability

Additional qualifier definingemission reduction systemsas a system supportingthe main functions of thevessel according to Pt.4Ch.1

Zero Discharge (x)Installations for removalof SOx with holding tankcapacity for (x) days

Additional qualifier forclosed and hybrid exhaustgas cleaning (EGC) systemswith holding tank designedfor 100% EGC system loadfor (x) days

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Recyclable

Mandatory:

no


Pt.6 Ch.7 Sec.4


Pt.7 Ch.1 Sec.6 [35]

<None> Inventory of hazardousmaterials

Shore power

Mandatory:

no


Pt.6 Ch.7 Sec.5


NA

<None> Electric shore connections

A Vessels using acousticalequipment

S Vessels conducting seismicsurveys

F Fishing vessel

R Research vessel

Silent

Mandatory:

no


Pt.6 Ch.7 Sec.6


Pt.7 Ch.1 Sec.6

E

Vessels complying withspecified maximumunderwater noise emission

Vessels demonstrating acontrolled environmentalnoise emission

I[Ls,Lp,d,h] Vessels berthed in port inidle condition.

Quiet

Mandatory:

no


Pt.6 Ch.7 Sec.8


Pt.7 Ch.1 Sec.6

W[Ls,Lp,d,h]

Measuring of airborne noiseemitted from vessels whenberthed.

Ls - maximum A-weightedsound pressure level indB(A) on starboard side on a100 m distance

Lp - maximum A-weightedsound pressure level indB(A) on port side on a 100m distance

d - maximum differencebetween C-weighted and A-weighted sound pressurelevel in dB on a 100 mdistance

h - height of funnel in m, ifany.

Vessels berthed in port inworking condition.

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9 Living and working conditionsTable 9 Additional class notations related to living and working conditions


C-crn

Vessels designed forenhanced comfort byimproved indoor climate.crn denotes comfort ratingnumber

COMF

Mandatory:

no


Pt.6 Ch.8 Sec.1


NA V-crn

Vessels designed forenhanced comfort byreducing noise and vibration.crn denotes comfort ratingnumber

VIBR

Mandatory:

no


Pt.6 Ch.8 Sec.2


Pt.7 Ch.1 Sec.6

<None> Limitations to vibrationlevels

SAFELASH

Mandatory:

no


Pt.6 Ch.8 Sec.3


NA

<None>

Increased safety levelfor crew members andstevedores engaged in thehandling and securing ofcontainers

Container ships andvessels assigned theadditional class notationContainer

10 Survey arrangementsTable 10 Additional class notations related to survey arrangement


BIS

Mandatory:

no


Pt.6 Ch.9 Sec.1


Pt.7 Ch.1 Sec.6

<None>Built for in-water surveyof the vessel bottom andrelated items

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ESP

Mandatory:

yes


Pt.6 Ch.9 Sec.2


Pt.7 Ch.1 Sec.2, Pt.7 Ch.1Sec.3, Pt.7 Ch.1 Sec.4 and Pt.7Ch.1 Sec.5

<None> Vessels subject to anenhanced survey programme

Mandatory for vessels withclass notations:

Bulk carrier

Tanker for oil

Bulk carrier or tanker foroil

and

Tanker for chemicals

Tanker for C

having integral tanksintended for carriage ofliquid chemicals in bulk inaccordance with the IBCcode

HLP

Mandatory:

no


Pt.6 Ch.9 Sec.3



<None> Hull life cycle programme

An Sensor monitoringacceleration along one axis

BnStatistical back-up andtrigged time series to besent annually to the Society

Cn

Online link to loadingcomputer which iscontinuously updating theloading condition

Dn

Online data link betweenhull monitoring system onboard to office ashore. Thelink shall make it possibleto operate the systemfrom an onshore computer,perform maintenance andtransfer data

EnSensor monitoring thepropulsion shaft(s) output/rpm

HMON

Mandatory:

no


Pt.6 Ch.9 Sec.4


Pt.7 Ch.1 Sec.6

Gn

Hull monitoring at variouslocations to reduce the needfor internal survey throughincreased focus on hullstress warnings. n denotesnumber of sensors

Sensor monitoring globalhull strain

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HnSensor monitoring theliquid motion pressures intanks (sloshing)

In Sensors for ice thicknessmeasurement

IRM Ice response monitoring,further described by Ln

Ln Sensor monitoring local hullstrain

MnDevice for monitoring ofhull rigid body motions (sixdegrees of freedom)

On

Navigation sensors(position fixing system(e.g. GPS), speed log, gyrocompass, rudder angle,etc.)

Pn Sensor monitoring the seapressure acting on the hull

PRParametric roll sensorsbased on roll and pitchbased on Mn

Sn Device for monitoring thesea-state

Tn Sensor monitoring thetemperature

VDVnFree axial sensors forestimation of vibration dosevalue

Wn Wind sensor for wind speedand wind heading

Oil lubricated Oil lubricated tail-shaftstern tube bearing

Closed loop waterWater lubricated tail shaftstern tube bearing withclosed loop

TMON

Mandatory:

no


Pt.6 Ch.9 Sec.5


Pt.7 Ch.1 Sec.6 Open loop water

Tail shaft monitoring enablesoperators to continuouslyobserve and assess thecondition of the shaft(s)which may extend intervalbetween tail shaft surveys/tail shaft withdrawal

Water lubricated tail shaftstern tube bearing withopen loop

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BMON

Mandatory:

no


Pt.6 Ch.9 Sec.6


Pt.7 Ch.1 Sec.6

<None>

Boiler monitoring reducesthe need for internal surveyat every alternate surveythrough increased focus onwater management

CMON

Mandatory:

no


Pt.6 Ch.9 Sec.7


Pt.7 Ch.1 Sec.6

<None> Construction monitoring ofhull critical locations

UWILD

Mandatory:

no


Pt.6 Ch.9 Sec.8


Pt.7 Ch.1 Sec.5 [1.5]

Pt.7 Ch.1 Sec.5 [1.6.3]

<None> Underwater inspection in lieuof drydocking

For permanently mooredvessels

<None>Extended and flexiblescheduling of internal cargotank(s) survey

ASP

Mandatory:

no


Pt.6 Ch.9 Sec.9


Pt.7 Ch.1 Sec.6 [42]

MRU Motions reference unit(MRU) installed

Liquefied gas storage units(e.g. FSU and FSRU)

<None>Prepared for extendedand flexible scheduling ofinternal cargo tank(s) survey

ASP ready

Mandatory:

no


Pt.6 Ch.9 Sec.9


Pt.7 Ch.1 Sec.6 [42]

MRU Motions reference unit(MRU) installed

Liquefied gas storage units(e.g. FSU and FSRU)

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11 NavalTable 11 Additional class notations related to naval vessels


NAUT

Mandatory:

no


Pt.6 Ch.10 Sec.1


Pt.7 Ch.1 Sec.6

Navy

Basic requirements tobridge design, bridgeinstrumentation, andworkstation arrangement

All naval flagged vesselsand administeredby a national navaladministration, except:

— Vessel of less than 24metres LOA

— Submarines

<None> Naval operations and navalsupport operations

HullNaval requirements forarrangements, loads and hullstrength

STAB Naval requirements forstability

SystemNaval requirements forpiping, machinery, electrical,control and monitoring

Fire Naval requirements for firesafety

EVAC Naval requirements for safeevacuation

RADHAZ Naval requirements forradiation hazards

EMCNaval requirementsfor electromagneticcompatibility

Naval support

Mandatory:

yes


Pt.5 Ch.13 Sec.3



SAMNaval requirementsfor storage rooms forammunition

Naval flagged vessels andadministered by a nationalnaval administration

11.1 General

11.1.1 The class notation Naval support may be combined with ship type notations in Pt.5.

11.1.2 The qualifiers to Naval support are optional.

11.1.3 Any combination of qualifiers for Naval support are allowed. For example Naval support(Hull,STAB, Fire).

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SECTION 5 SERVICE AREA

1 Service area notation

1.1 General

1.1.1 The service area notation R followed by a number or a letter will be assigned to vessels with modifiedrequirements to arrangement, equipment or scantlings, in relation to vessels built for unrestricted trade.The service area restrictions, given in nautical miles and representing the maximum distance from nearestport or safe anchorage, are given in Table 1 of this section. For the various service area notations therestrictions are related to the zones, areas and seasonal periods as defined in the International Conventionon Load Lines, 1966, Annex II.The service area notation RE is limited to enclosed waters such as fjords, ports, rivers and lakes.The service area restrictions as related to the assigned service area notation will be included in the appendixto the class certificate.

Table 1 Service area restrictions

Seasonal zones (nautical miles)Service areanotations Winter Summer Tropical

Correspondingsignificant wave

height HS 1) in meters

R0 250 No restrictions No restrictions Not applicable

R1 100 200 300 0.9Cw

R2 50 100 200 0.8Cw

R3 20 50 100 0.6Cw

R4 5 10 20 0.5Cw

RE Enclosed waters 0.4Cw

1) Cw is the wave coefficient as defined in Pt.3 Ch.4 Sec.4. The significant wave height (HS) assumes reduced speed inhead sea and that heading is changed when necessary to avoid resonance and extreme rolling.

1.1.2 Modified requirements related to the various service area notations are given in the relevant sectionsof the rules. The modifications may affect:

— design hull girder loads— design pressures on shell, weather decks, superstructures and deckhouses— anchoring and mooring equipment— stability.

1.1.3 The flag administration, the domestic requirements of which are being applied under the provision ofCh.1 Sec.2 [1.3.5] (local trade), shall be indicated in parentheses after the service area notation, by usinglower-case country codes in accordance with ISO 3166, (e.g. R2(nor), should the flag administration beNorway or R2(usa) should the flag administration be U.S.A. etc.).1.1.5 Other service restrictions or operational limits included in the design assumptions for a vessel will bestated in the appendix to the class certificate and/or on special signboards.

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SECTION 6 DESCRIPTIVE NOTATION

1 General

1.1 For a vessel with purpose, function or feature not covered by existing notations, this may be recognized byassignment of a descriptive notation.

1.2 The descriptive notation may be assigned upon request to the Society.

1.3 There are no class requirements associated with a descriptive notation.

1.4 The descriptive notation will be identified by use of square brackets, e.g. [Research vessel].

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CHANGES – HISTORIC

July 2018 edition


Update of name and qualifiersof a ship type notation forvessels for special operations

Sec.3 [11] Diving support vessel class notation is changed to DSV. Newqualifiers Ready and OCS are introduced.

Cyber security Sec.4 [6] Introducing new additional class notation Cyber secure relatedto mitigation of cyber risks.

New class notation for SOxand NOx cleaning systems(Scrubbers and selectivecatalytic reduction systems(SCR))

Sec.4 [8] New additional class notation ER (emission reduction) relatedto environmental protection and pollution control.

Survey requirements forfleet in service (FiS) for classnotation Walk2work

Sec.4 [4] Added reference to requirements for fleet in service.

Maintenance of rules for orecarriers

Sec.4 Table 1 The additional class notation Holds n may be empty isremoved for ships with the additional class notation OC(M) .

Underwater inspection in lieuof dry docking

Sec.4 Table 10 New additional class notation UWILD for permanently mooredvessels is introduced.

Revision of requirements fornotation REGAS

Sec.4 Table 5 New qualifier ES (enhanced safety) for the REGAS classnotation is introduced, focusing on enhanced safety features.

Revision of individual routecalculation

Sec.4 Table 5 Updated and enhanced additional class notation RSCS+ forroute specific container stowage on long haul as well as costalvoyages based on weather forecasts. The sign + is added todifferentiate the enhanced notation.

January 2018 edition

Changes January 2018, entering into force 1 July 2018Topic Reference Description

Sec.1 [1.1.1] Descriptive notation added to list of content of class notationstring.

Implementation of newdescriptive notation

Sec.6 [1.1] to Sec.6[1.4]

New requirements offering the option of assigning a descriptivenotation to a vessel.

New ship type notation -Tanker for potable water

Sec.3 Table 10 For vessels intended to carry potable water in bulk.

New additional class notation -RO/RO

Sec.4 Table 6 Designed and arranged for roll-on and roll-of cargo handlingand transportation of rolling vehicles.

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Topic Reference Description

New additional class notation -Gas power plant

Sec.4 Table 6 For vessels arranged with a gas fired power plant for theproduction and export of electrical energy.

New additional class notation -ADW

Sec.4 Table 6 For anchoring in deep and unsheltered water.

New additional class notation -BCLIQ

Sec.4 Table 6 For vessel intended to carry solid bulk cargo that may liquefyduring a voyage if shipped at a moisture level exceeding thetransportable moisture limit of the cargo.

New additional class notation -RO/RO

Sec.4 Table 6 Designed and arranged for roll-on and roll-of cargo handlingand transportation of rolling vehicles.

New additional class notation -Shaft align

Sec.4 Table 3 For enhanced design, installation and operating margins of thepropulsion shaft bearings beyond the main class requirementsfor shaft alignment.

July 2017 edition


Sec.5 Table 1 Inserted column with corresponding limiting significant waveheight Hs for each R notation.

Notations for Service arearestrictions (R notations)and corresponding limitingsignificant wave height, Hs Sec.5 Table 1 Inserted footnote related to operational assumptions.

Clarification of requirements forship type and additional classnotations

Sec.2 [2.1.1] Inserted text clarifying that requirements for ship typeand additional class notations may superseed main classrequirements.

Correct reference Sec.3 Table 10 Inserted correct reference to Fleet in Service requirements.

Update Table 10 according toPt.5 Ch.10 Sec.11

Sec.3 Table 10 Inserted class notation Escort tug with new qualifiers.


Sec.4 Table 10 Inserted four new qualifiers according to the introduction in therules.


Sec.4 Table 10 Inserted new class notation CMON.


Main changes January 2017, entering into force 1 July 2017

• Sec.3 - Ship type notations— Sec.3 Table 5: added class notation Barge for oil products with flashpoint above 60°C— Sec.3 Table 5: added class notation Barge for asphalt/bitumen— Sec.3 Table 6: added application for class notation Tanker for chemicals with flashpoint above 60°C

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— Sec.3 Table 6: added class notation Barge for chemicals with flashpoint above 60°C

• Sec.4 - Additional class notations— Sec.4 Table 6: added class notation Walk2work

July 2016 edition

Main changes July 2016, entering into force 1 January 2017

• Sec.3 Ship type notations— Sec.3 Table 5: Added class notation Barge for oil.— Sec.3 Table 5: Added class notation Barge for oil products.— Sec.3 Table 6: Added class notation Barge for chemicals.— Sec.3 Table 6: Added class notation Barge for C.— Sec.3 Table 7: Added class notation Tanker for c.— Sec.3 Table 7: Added class notation Barge for liquefied gas.— Sec.3 Table 7: Added class notation Barge for c.— Sec.3 Table 10: Added class notation Slop Reception Vessel.— Sec.3 Table 10: Added class notation Reefer.— Sec.3 Table 10: Added class notation Refrigerated fruit juice carrier.

• Sec.4 Additional class notations— Sec.4 Table 5: Class notation REGAS changed from optional to mandatory.— Sec.4 Table 5: Additional class notation CA.


Main changes January 2016, entering into force 1 July 2016

• Sec.3 Ship type notations— Table 5: Added class notations:

— Tanker for oil products with flashpoint above 60°C— Tanker for asphalt/bitumen.

— Table 6: Added class notation Tanker for chemicals with flashpoint above 60°C.

• Sec.4 Additional class notations— Table 1: Added class notations:

— Hot— Block loading.

— Table 3: Added class notation Scrubber ready

— Table 6: Added class notation CHEM

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— Table 10: Added qualifiers for class notation TMON:

— Closed loop water— Open loop water.

October 2015 editionThis is a new document.The rules enter into force 1 January 2016.

About DNV GLDNV GL is a global quality assurance and risk management company. Driven by our purpose ofsafeguarding life, property and the environment, we enable our customers to advance the safetyand sustainability of their business. We provide classification, technical assurance, software andindependent expert advisory services to the maritime, oil & gas, power and renewables industries.We also provide certification, supply chain and data management services to customers across awide range of industries. Operating in more than 100 countries, our experts are dedicated to helpingcustomers make the world safer, smarter and greener.

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