Nr467partevol02 Si

Marine Division92571 Neuilly-sur-Seine Cedex- France

Tel: + 33 (0)1 55 24 70 00 - Fax: + 33 (0)1 55 24 70 25Marine Website: http://www.veristar.comEmail: [email protected]

2011 Bureau Veritas - All rights reserved

PART E Additional Class NotationsChapters 6 7 8 9 10

NR 467.E2 DT R05 E July 2011

Rules for the Classification ofSteel Ships

ARTICLE 1

1.1. - BUREAU VERITAS is a Society the purpose of whose Marine Division (the "Society") is the classi-fication (" Classification ") of any ship or vessel or structure of any type or part of it or system therein col-lectively hereinafter referred to as a "Unit" whether linked to shore, river bed or sea bed or not, whetheroperated or located at sea or in inland waters or partly on land, including submarines, hovercrafts, drillingrigs, offshore installations of any type and of any purpose, their related and ancillary equipment, subseaor not, such as well head and pipelines, mooring legs and mooring points or otherwise as decided by theSociety.

The Society: prepares and publishes Rules for classification, Guidance Notes and other documents (Rules); issues Certificates, Attestations and Reports following its interventions (Certificates); publishes Registers.

1.2. - The Society also participates in the application of National and International Regulations or Stand-ards, in particular by delegation from different Governments. Those activities are hereafter collectively re-ferred to as " Certification ".1.3. - The Society can also provide services related to Classification and Certification such as ship andcompany safety management certification; ship and port security certification, training activities; all activi-ties and duties incidental thereto such as documentation on any supporting means, software, instrumen-tation, measurements, tests and trials on board.

1.4. - The interventions mentioned in 1.1., 1.2. and 1.3. are referred to as " Services ". The party and/or itsrepresentative requesting the services is hereinafter referred to as the " Client ". The Services are pre-pared and carried out on the assumption that the Clients are aware of the International Maritimeand/or Offshore Industry (the "Industry") practices.1.5. - The Society is neither and may not be considered as an Underwriter, Broker in ship's sale or char-tering, Expert in Unit's valuation, Consulting Engineer, Controller, Naval Architect, Manufacturer, Ship-builder, Repair yard, Charterer or Shipowner who are not relieved of any of their expressed or impliedobligations by the interventions of the Society.

ARTICLE 22.1. - Classification is the appraisement given by the Society for its Client, at a certain date, following sur-veys by its Surveyors along the lines specified in Articles 3 and 4 hereafter on the level of compliance ofa Unit to its Rules or part of them. This appraisement is represented by a class entered on the Certificatesand periodically transcribed in the Society's Register.

2.2. - Certification is carried out by the Society along the same lines as set out in Articles 3 and 4 hereafterand with reference to the applicable National and International Regulations or Standards.

2.3. - It is incumbent upon the Client to maintain the condition of the Unit after surveys, to presentthe Unit for surveys and to inform the Society without delay of circumstances which may affect thegiven appraisement or cause to modify its scope.2.4. - The Client is to give to the Society all access and information necessary for the safe and efficientperformance of the requested Services. The Client is the sole responsible for the conditions of presenta-tion of the Unit for tests, trials and surveys and the conditions under which tests and trials are carried out.

ARTICLE 33.1. - The Rules, procedures and instructions of the Society take into account at the date of theirpreparation the state of currently available and proven technical knowledge of the Industry. Theyare not a standard or a code of construction neither a guide for maintenance, a safety handbookor a guide of professional practices, all of which are assumed to be known in detail and carefullyfollowed at all times by the Client.Committees consisting of personalities from the Industry contribute to the development of those docu-ments.3.2. - The Society only is qualified to apply its Rules and to interpret them. Any reference to themhas no effect unless it involves the Society's intervention.3.3. - The Services of the Society are carried out by professional Surveyors according to the applicableRules and to the Code of Ethics of the Society. Surveyors have authority to decide locally on matters re-lated to classification and certification of the Units, unless the Rules provide otherwise.

3.4. - The operations of the Society in providing its Services are exclusively conducted by way ofrandom inspections and do not in any circumstances involve monitoring or exhaustive verifica-tion.

ARTICLE 4

4.1. - The Society, acting by reference to its Rules: reviews the construction arrangements of the Units as shown on the documents presented by the Cli-

ent; conducts surveys at the place of their construction; classes Units and enters their class in its Register; surveys periodically the Units in service to note that the requirements for the maintenance of class are

met.

The Client is to inform the Society without delay of circumstances which may cause the date or theextent of the surveys to be changed.

ARTICLE 55.1. - The Society acts as a provider of services. This cannot be construed as an obligation bearingon the Society to obtain a result or as a warranty.5.2. - The certificates issued by the Society pursuant to 5.1. here above are a statement on the levelof compliance of the Unit to its Rules or to the documents of reference for the Services providedfor.In particular, the Society does not engage in any work relating to the design, building, productionor repair checks, neither in the operation of the Units or in their trade, neither in any advisory serv-ices, and cannot be held liable on those accounts. Its certificates cannot be construed as an im-plied or express warranty of safety, fitness for the purpose, seaworthiness of the Unit or of its valuefor sale, insurance or chartering.5.3. - The Society does not declare the acceptance or commissioning of a Unit, nor of its construc-tion in conformity with its design, that being the exclusive responsibility of its owner or builder,respectively.

5.4. - The Services of the Society cannot create any obligation bearing on the Society or constitute anywarranty of proper operation, beyond any representation set forth in the Rules, of any Unit, equipment ormachinery, computer software of any sort or other comparable concepts that has been subject to any sur-vey by the Society.

ARTICLE 66.1. - The Society accepts no responsibility for the use of information related to its Services which was notprovided for the purpose by the Society or with its assistance.

6.2. - If the Services of the Society cause to the Client a damage which is proved to be the directand reasonably foreseeable consequence of an error or omission of the Society, its liability to-wards the Client is limited to ten times the amount of fee paid for the Service having caused thedamage, provided however that this limit shall be subject to a minimum of eight thousand (8,000)Euro, and to a maximum which is the greater of eight hundred thousand (800,000) Euro and oneand a half times the above mentioned fee.The Society bears no liability for indirect or consequential loss such as e.g. loss of revenue, lossof profit, loss of production, loss relative to other contracts and indemnities for termination of oth-er agreements.6.3. - All claims are to be presented to the Society in writing within three months of the date when the Serv-ices were supplied or (if later) the date when the events which are relied on of were first known to the Client,and any claim which is not so presented shall be deemed waived and absolutely barred. Time is to be in-terrupted thereafter with the same periodicity.

ARTICLE 77.1. - Requests for Services are to be in writing.7.2. - Either the Client or the Society can terminate as of right the requested Services after givingthe other party thirty days' written notice, for convenience, and without prejudice to the provisionsin Article 8 hereunder. 7.3. - The class granted to the concerned Units and the previously issued certificates remain valid until thedate of effect of the notice issued according to 7.2. here above subject to compliance with 2.3. here aboveand Article 8 hereunder.

7.4. - The contract for classification and/or certification of a Unit cannot be transferred neither assigned.

ARTICLE 88.1. - The Services of the Society, whether completed or not, involve, for the part carried out, the paymentof fee upon receipt of the invoice and the reimbursement of the expenses incurred.

8.2. Overdue amounts are increased as of right by interest in accordance with the applicable leg-islation.8.3. - The class of a Unit may be suspended in the event of non-payment of fee after a first unfruitfulnotification to pay.

ARTICLE 9

9.1. - The documents and data provided to or prepared by the Society for its Services, and the informationavailable to the Society, are treated as confidential. However: clients have access to the data they have provided to the Society and, during the period of classifica-

tion of the Unit for them, to the classification file consisting of survey reports and certificates whichhave been prepared at any time by the Society for the classification of the Unit;

copy of the documents made available for the classification of the Unit and of available survey reportscan be handed over to another Classification Society, where appropriate, in case of the Unit's transferof class;

the data relative to the evolution of the Register, to the class suspension and to the survey status of theUnits, as well as general technical information related to hull and equipment damages, are passed onto IACS (International Association of Classification Societies) according to the association workingrules;

the certificates, documents and information relative to the Units classed with the Society may bereviewed during certificating bodies audits and are disclosed upon order of the concerned governmen-tal or inter-governmental authorities or of a Court having jurisdiction.

The documents and data are subject to a file management plan.

ARTICLE 1010.1. - Any delay or shortcoming in the performance of its Services by the Society arising from an eventnot reasonably foreseeable by or beyond the control of the Society shall be deemed not to be a breach ofcontract.

ARTICLE 1111.1. - In case of diverging opinions during surveys between the Client and the Society's surveyor, the So-ciety may designate another of its surveyors at the request of the Client.

11.2. - Disagreements of a technical nature between the Client and the Society can be submitted by theSociety to the advice of its Marine Advisory Committee.

ARTICLE 1212.1. - Disputes over the Services carried out by delegation of Governments are assessed within theframework of the applicable agreements with the States, international Conventions and national rules.

12.2. - Disputes arising out of the payment of the Society's invoices by the Client are submitted to the Courtof Nanterre, France.

12.3. - Other disputes over the present General Conditions or over the Services of the Society areexclusively submitted to arbitration, by three arbitrators, in London according to the ArbitrationAct 1996 or any statutory modification or re-enactment thereof. The contract between the Societyand the Client shall be governed by English law.

ARTICLE 1313.1. - These General Conditions constitute the sole contractual obligations binding together theSociety and the Client, to the exclusion of all other representation, statements, terms, conditionswhether express or implied. They may be varied in writing by mutual agreement.13.2. - The invalidity of one or more stipulations of the present General Conditions does not affect the va-lidity of the remaining provisions.

13.3. - The definitions herein take precedence over any definitions serving the same purpose which mayappear in other documents issued by the Society.

BV Mod. Ad. ME 545 k - 17 December 2008

MARINE DIVISION

GENERAL CONDITIONS

RULES FOR THE CLASSIFICATION OF SHIPS

Part EAdditional Class Notations

Chapters 1 2 3 4 5 6 7 8 9 10

Chapter 1 VeriSTAR SYSTEM (STAR) Chapter 2 AVAILABILITY OF MACHINERY (AVM) Chapter 3 AUTOMATION SYSTEMS (AUT) Chapter 4 INTEGRATED SHIP SYSTEMS (SYS) Chapter 5 MONITORING EQUIPMENT (MON) Chapter 6 COMFORT ON BOARD (COMF) Chapter 7 REFRIGERATING INSTALLATIONS (REF) Chapter 8 ICE CLASS (ICE) Chapter 9 POLLUTION PREVENTION (CLEANSHIP) Chapter 10 OTHER ADDITIONAL CLASS NOTATIONSJuly 2011

The English wording of these rules take precedence over editionsin other languages.

Unless otherwise specified, these rules apply to ships for which contracts aresigned after July 1st, 2011. The Society may refer to the contents hereofbefore July 1st, 2011, as and when deemed necessary or appropriate.

2 Bureau Veritas July 2011

CHAPTER 6COMFORT ON BOARD (COMF)

Section 1 General Requirements1 General 21

1.1 Application1.2 Basic principles1.3 Regulations, Standards1.4 Definitions1.5 Document to be submitted

2 Conditions of attribution 222.1 Measurements2.2 Determination of comfort rating number2.3 Measuring locations

3 Testing conditions 233.1 General3.2 Harbour test conditions3.3 Sea trial conditions

Section 2 Additional Requirements for Ships of Less than 65 m in Length1 General 25

1.1 Application

2 COMF-NOISE 252.1 Measurement procedure2.2 Noise levels2.3 Sound insulation measurements

3 COMF-VIB 263.1 Measurement procedure3.2 Vibration levels

Section 3 Additional Requirements for Cargo Ships Greater than or Equal to 65 m in Length

1 General 281.1 Application

2 COMF-NOISE 282.1 Measurement procedure2.2 Noise levels2.3 Sound insulation measurements

3 COMF-VIB 283.1 Measurement procedure3.2 Vibration levelsJuly 2011 Bureau Veritas 3

Section 4 Additional Requirements for Passenger Ships Greater than or Equal to 65 m in Length

1 General 311.1 Application

2 COMF-NOISE 312.1 Measurement procedure2.2 Noise levels2.3 Sound insulation measurements2.4 Impact measurements


Section 5 Additional Requirements for Yachts1 General 35

1.1 Application

2 COMF-NOISE 352.1 Measurement procedure2.2 Noise levels2.3 Sound insulation measurements2.4 Impact measurements


4 COMF + 374.1 Application4.2 Data processing - Analysis4.3 Measurement procedure4.4 COMF + Sound insulation index4.5 COMF + Impact index4.6 COMF + Emergence4.7 COMF + intermittent noise4.8 COMF + intelligibility4 Bureau Veritas July 2011

CHAPTER 7REFRIGERATING INSTALLATIONS (REF)

Section 1 General Requirements 1 General 41

1.1 Application1.2 Temperature conditions1.3 Definitions

2 Design criteria 422.1 Reference conditions

3 Documentation 423.1 Refrigerating installations3.2 Controlled atmosphere installations

4 General technical requirements 424.1 Refrigeration of chambers4.2 Defrosting4.3 Prime movers and sources of power4.4 Pumps4.5 Sea connections 4.6 Refrigerating machinery spaces4.7 Exemptions for small plants4.8 Personnel safety

5 Refrigerated chambers 445.1 Construction of refrigerated chambers 5.2 Penetrations5.3 Access to refrigerated spaces5.4 Insulation of refrigerated chambers 5.5 Protection of insulation5.6 Miscellaneous requirements 5.7 Installation of the insulation5.8 Drainage of refrigerated spaces

6 Refrigerants 466.1 General6.2 Rated working pressures

7 Refrigerating machinery and equipment 477.1 General requirements for prime movers7.2 Common requirements for compressors7.3 Reciprocating compressors7.4 Screw compressor bearings7.5 Pressure vessels7.6 General requirements for piping7.7 Accessories7.8 Refrigerating plant overpressure protection

8 Specific requirements for direct and indirect refrigerating systems 498.1 Specific requirements for refrigerating systems8.2 Specific requirements for air cooling systems and distribution and renewal of air

in cargo spacesJuly 2011 Bureau Veritas 5

9 Instrumentation, alarm, monitoring 509.1 General9.2 Instrumentation, alarm and monitoring arrangement

10 Material tests, inspection and testing, certification 5110.1 Material testing10.2 Shop tests10.3 Pressure tests at the workshop10.4 Thermometers and manometers10.5 Shipboard tests10.6 Defrosting system

Section 2 Additional Requirements for Notation REF-CARGO1 General 53

1.1 Application1.2 Refrigeration of cargo spaces1.3 Heating

2 Refrigerated cargo spaces 532.1 Insulation

3 Instrumentation 533.1 Thermometers in cargo spaces

4 Additional requirements for AIR-CONT notation 544.1 General4.2 Controlled atmosphere cargo spaces and adjacent spaces4.3 Gas systems4.4 Miscellaneous equipment4.5 Gas detection and monitoring equipment4.6 Instrumentation, alarm and monitoring arrangement4.7 Safety4.8 Tests and trials

5 Additional requirements for notations PRECOOLING and QUICKFREEZE 595.1 General5.2 Shipboard tests

Section 3 Additional Requirements for Notation REF-CONT1 General 60

1.1 Application

2 Refrigerating plants supplying refrigerated air to containers 602.1 Definitions2.2 Cold distribution2.3 Equipment and systems2.4 Thermometers2.5 Workshop and shipboard inspections and tests2.6 Temperature measuring and recording devices2.7 Shipboard tests6 Bureau Veritas July 2011

3 Ships supplying electrical power to self-refrigerated containers 633.1 Electrical equipment3.2 Installation of containers

Section 4 Additional Requirements for Notation REF-STORE1 General 64

1.1 ApplicationJuly 2011 Bureau Veritas 7

CHAPTER 8ICE CLASS (ICE)

Section 1 General1 General 67

1.1 Application1.2 Owners responsibility

2 Ice class draughts and ice thickness 672.1 Definitions2.2 Draught limitations in ice2.3 Ice thickness

3 Output of propulsion machinery 683.1 Required engine output for ICE CLASS IA SUPER, ICE CLASS IA,

ICE CLASS IB and ICE CLASS IC

Section 2 Hull and Stability1 General 71

1.1 Application1.2 Hull regions1.3 Ice strengthened area

2 Structure design principles 722.1 General framing arrangement2.2 Transverse framing arrangement2.3 Bilge keels

3 Design loads 733.1 General3.2 Ice loads

4 Hull scantlings 754.1 Plating4.2 Ordinary stiffeners4.3 Primary supporting members

5 Other structures 775.1 Application5.2 Fore part5.3 Aft part5.4 Deck strips and hatch covers5.5 Sidescuttles and freeing ports

6 Hull outfitting 786.1 Rudders and steering arrangements6.2 Bulwarks8 Bureau Veritas July 2011

Section 3 Machinery1 Requirements for propulsion machinery of the class notation

ICE CLASS IA SUPER, ICE CLASS IA, ICE CLASS IB and ICE CLASS IC 801.1 Scope1.2 Design ice conditions1.3 Materials1.4 Design loads1.5 Design1.6 Alternative design procedure

2 Requirements for propulsion machinery of ICE CLASS ID 892.1 Propulsion machinery performance2.2 Ice torque2.3 Propellers2.4 Shafting

3 Miscellaneous requirements 913.1 Sea inlets, ballast systems and cooling water systems of machinery3.2 Steering gear3.3 Fire pumps3.4 Transverse thrustersJuly 2011 Bureau Veritas 9

CHAPTER 9POLLUTION PREVENTION (CLEANSHIP)

Section 1 General Requirements1 Scope and application 95

1.1 General1.2 Applicable rules and regulations

2 Definitions and abbreviations 962.1 Definitions related to sea pollution2.2 Definitions related to air pollution2.3 Abbreviations

3 Documents to be submitted and applicable standards 973.1 Documents to be submitted3.2 Modifications and additions

Section 2 Design Requirements for the Notations CLEANSHIP and CLEANSHIP SUPER

1 General 1021.1 Application1.2 Documents to be submitted

2 Design requirements for the additional class notation CLEANSHIP 1022.1 Waste management2.2 Oily wastes2.3 Wastewaters2.4 Garbage and hazardous wastes2.5 Hull antifouling systems2.6 Prevention of pollution by oil spillage and leakage2.7 Refrigeration systems2.8 Fire-fighting systems2.9 Emission of nitrogen oxides (NOx)2.10 Emission of sulphur oxides (SOx)

3 Additional design requirements for the additional class notation CLEANSHIP SUPER 1083.1 Waste minimization and recycling program3.2 Protection against oil pollution in the event of collision or grounding3.3 Prevention of air pollution3.4 Monitoring and recording systems

Section 3 Design Requirements for the Pollution Prevention Notations other than CLEANSHIP and CLEANSHIP SUPER

1 General 1091.1 Application1.2 Documents to be submitted10 Bureau Veritas July 2011

2 Additional class notation AWT 1092.1 Scope2.2 Definitions and abbreviations2.3 Design of the AWT plant

3 Additional class notation BWE 1103.1 Scope3.2 Design requirements

4 Additional class notation BWT 1104.1 Scope4.2 Design and installation requirements

5 Additional class notation GWT 1105.1 Scope5.2 Design of the grey water treatment plant

6 Additional class notation NDO-x days 1116.1 Scope6.2 Design requirements

7 Additional class notation NOX-x% 1117.1 Scope7.2 Design requirements

8 Additional class notation OWS-x ppm 1128.1 Scope8.2 Design requirements

9 Additional class notation SOX-x% 1129.1 Scope9.2 Design requirements

Section 4 Onboard Surveys1 Application 113

1.1

2 Periodical tests and measurements done by the shipowner 1132.1 General2.2 Initial period2.3 Periodical tests after first year of service

3 Periodical surveys 1143.1 Initial survey3.2 Periodical surveyJuly 2011 Bureau Veritas 11

CHAPTER 10OTHER ADDITIONAL CLASS NOTATIONS

Section 1 Strengthened Bottom (STRENGTHBOTTOM)1 General 117

1.1 Application1.2 General bottom arrangement

2 Primary supporting members arrangement 1182.1 Ships with a longitudinally framed bottom2.2 Ships with a transversely framed bottom

3 Bottom scantlings 1183.1 Plating3.2 Ordinary stiffeners3.3 Primary supporting members

Section 2 Grab Loading (GRABLOADING)1 General 119

1.1 Application

2 Scantlings 1192.1 Inner bottom plating

Section 3 In-Water Survey Arrangements (INWATERSURVEY)1 General 120

1.1 Application1.2 Documentation to be submitted

2 Structure design principles 1202.1

3 Sea inlets and cooling water systems of machinery 1203.1

Section 4 Single Point Mooring (SPM)1 General 121

1.1 Application

2 Documentation 1212.1 Documentation for approval2.2 Documentation for information12 Bureau Veritas July 2011

3 General arrangement 1213.1 General provision3.2 Typical layout3.3 Equipment

4 Number and safe working load of chain stoppers 1224.1 General

5 Mooring components 1225.1 Bow chain stopper5.2 Bow fairleads5.3 Pedestal roller fairleads5.4 Winches or capstans

6 Supporting hull structures 1246.1 General

7 Strength criteria 1247.1 General

Section 5 Container Lashing Equipment (LASHING)1 General 125

1.1 Application1.2 Documents to be kept on board1.3 Materials

2 Arrangement of containers 1252.1 General2.2 Stowage in holds using removable cell guides2.3 Stowage under deck without cell guides2.4 Stowage on exposed deck 2.5 Uniform line load stowage on deck or hatch covers

3 Procedure for the assignment of the notation 1283.1 Approval of the mobile lashing equipment3.2 Type tests3.3 Inspection at works of the mobile lashing equipment3.4 Reception on board of the mobile lashing equipment

4 Forces applied to containers 1294.1 General4.2 Definitions4.3 Still water and inertial forces4.4 Wind forces4.5 Forces imposed by lashing and securing arrangements4.6 Buoyancy force

5 Determination of loads in lashing equipment and in container frames 1335.1 Calculation hypothesis5.2 Distribution of forces5.3 Containers only secured by locking devices5.4 Containers secured by means of lashings or buttresses5.5 StiffnessesJuly 2011 Bureau Veritas 13

6 Strength criteria 1346.1 Permissible loads on containers 6.2 Permissible loads induced by lashing on container corners 6.3 Permissible loads on lashing equipment 6.4 Permissible stresses on cell guides

Section 6 Dynamic Positioning (DYNAPOS)1 General 136

1.1 Application1.2 Definitions1.3 Dynamic positioning sub-systems1.4 Additional and optional class notation1.5 Installation survey during construction1.6 List of documents to be submitted

2 Performance analysis 1372.1 General2.2 Condition of analysis2.3 Modelling and simulations2.4 Risk analysis

3 Equipment class 1393.1 General3.2 Equipment class according to single failure

4 Functional requirements 1394.1 General4.2 Power system4.3 Monitoring of the electricity production and propulsion4.4 Thruster system4.5 Thruster control4.6 Thruster monitoring and protection4.7 DP Control system4.8 Computers

5 Position reference system 1435.1 General5.2 Arrangement and performance of reference systems5.3 Type of position reference system5.4 Other reference systems5.5 Vessel sensors

6 Installation requirements 1446.1 Cables and piping systems6.2 Thruster location

7 Operational requirements 1467.1 General

8 Tests and trials 1468.1 Inspection at works8.2 Trials14 Bureau Veritas July 2011

9 Environmental station keeping index ESKI 1469.1 Definition9.2 Environmental conditions9.3 Condition of ESKI estimation9.4 Documentation to be submitted and example

Section 7 Vapour Control System (VCS)1 General 148

1.1 Application1.2 Definitions1.3 Documentation to be submitted

2 Vapour system 1482.1 General2.2 Vapour manifold2.3 Vapour hoses2.4 Vapour overpressure and vacuum protection

3 Instrumentation 1513.1 Cargo tank gauging equipment3.2 Cargo tank high level alarms3.3 Cargo tank overfill alarms3.4 High and low vapour pressure alarms

4 Instruction manual 1514.1 General4.2 Content

5 Testing and trials 1525.1 5.2 Shipboard trials

6 Additional requirements for notation TRANSFER 1526.1 Application6.2 Equipment

Section 8 Cofferdam Ventilation (COVENT)1 General 153

1.1 Application1.2 Documents to be submitted

2 Design and construction 1532.1 Arrangement2.2 Other technical requirements

3 Inspection and testing 1543.1 Equipment and systems3.2 Testing on boardJuly 2011 Bureau Veritas 15

Section 9 Centralised Cargo and Ballast Water Handling Installations (CARGOCONTROL)

1 General 1551.1 Application1.2 Documents to be submitted

2 Design and construction requirements 1552.1 Control station2.2 Remote control, indication and alarm systems

3 Inspection and testing 1563.1 Equipment and systems3.2 Testing on board

Section 10 Ship Manoeuvrability (MANOVR)1 General 157

1.1 Application1.2 Manoeuvre evaluation

2 Definitions 1572.1 Geometry of the ship2.2 Standard manoeuvres and associated terminology

3 Requirements 1583.1 Foreword3.2 Conditions in which the requirements apply3.3 Criteria for manoeuvrability evaluation

4 Additional considerations 1584.1 Trials in different conditions4.2 Dynamic instability

Section 11 Cold Weather Conditions COLD (H tDH, E tDE)1 General 159

1.1 Application1.2 Documentation to be submitted1.3 Testing

2 Hull and stability 1602.1 Hull2.2 Stability

3 Machinery installations 1603.1 General3.2 Principles3.3 Design requirements

4 Electrical installations 1624.1 General4.2 System design4.3 Protection 16 Bureau Veritas July 2011

5 Additional requirements 1635.1 Special equipment

Section 12 Efficient Washing of Cargo Tanks (EWCT)1 General 164

1.1 Application1.2 Documents to be submitted

2 Design requirements 1642.1 Cargo tanks2.2 Cargo piping system2.3 Cargo tank cleaning system

Section 13 Protected FO Tanks (PROTECTED FO TANKS)1 General 165

1.1 Application1.2 Definitions

2 Design requirements 1652.1 Distance from the bottom shell plating2.2 Distance from the side shell plating2.3 Oil fuel piping lines2.4 Suction wells

Section 14 Increased Admissible cargo Tank Pressure (IATP)1 Application 167

1.1 Ships covered by this section1.2 Scope

2 Documentation to be submitted 1672.1 Drawings and documents to be submitted to the Society

3 Definitions 1673.1

4 General design requirements 1674.1 Ship design4.2 Cargo tanks pressure relieving system4.3 Boil-off gas management system

5 Control, monitoring and safety systems 1685.1 Cargo tanks pressure alarms5.2 Indication of the cargo tanks pressure setting

6 Other 1696.1 Shop and gas trials6.2 Ship to ship transferJuly 2011 Bureau Veritas 17

Section 15 Enhanced Fire Protection for Cargo Ships and Tankers (EFP-AMC)1 General 170

1.1 Application

2 Protection of accommodation spaces (EFP-A) 1702.1 Application2.2 Prevention of fire2.3 Detection and alarm2.4 Containment of fire2.5 Escape

3 Protection of machinery spaces (EFP-M) 1713.1 Application3.2 Machinery spaces general arrangement3.3 Detection and alarm3.4 Ventilation system3.5 Local application system3.6 Escape3.7 Centralized fire control station

4 Protection of cargo decks and cargo spaces (EFP-C) 1714.1 Cargo ships4.2 Ro-ro cargo ships4.3 Oil tankers, FLS tankers and chemical tankers4.4 Liquefied gas carriers

Section 16 SINGLEPASSLOADING1 General 174

1.1 Application1.2 Definitions

2 Documentation to be submitted 1742.1 Design loading rate2.2 Loading sequences2.3 Hold mass curves

3 Loading instrument and alternative loading 1753.1 Loading instrument3.2 Alternative loading

4 Hull requirements 1754.1 General4.2 Hull structure4.3 Control and monitoring

5 System requirements 1755.1 General5.2 Ballast piping5.3 Control and monitoring18 Bureau Veritas July 2011

Part EService Notations

Chapter 6

COMFORT ON BOARD (COMF)SECTION 1 GENERAL REQUIREMENTS

SECTION 2 ADDITIONAL REQUIREMENTS FOR SHIPS OF LESS THAN 65 M IN LENGTH

SECTION 3 ADDITIONAL REQUIREMENTS FOR CARGO SHIPS GREATER THAN OR EQUAL TO 65 M IN LENGTH

SECTION 4 ADDITIONAL REQUIREMENTS FOR PASSENGER SHIPS GREATER THAN OR EQUAL TO 65 M IN LENGTH

SECTION 5 ADDITIONAL REQUIREMENTS FOR YACHTS

Symbols used in this Chapter

NCR : Normal continuous rating of the propulsionMCR : Maximum continuous rating of the propulsiondB : Decibel, unit of sound pressure level compared

to the reference pressure level (2 10-5 Pa)dB(A) : (A) weighted global value of the sound pressure

leveloctave band: Frequency space limited by a given frequency

and twice this frequency. Third (1/3) octaveband corresponds to a frequency space of 1/3octave. Octave and thirds bands used in acous-tics are standard bands (IEC).20 Bureau Veritas July 2011

Pt E, Ch 6, Sec 1SECTION 1 GENERAL REQUIREMENTS

1 General

1.1 Application

1.1.1 The additional class notation COMF is assigned, inaccordance with Pt A, Ch 1, Sec 2, [6.7] to the followingships:

Ships of less than 65 m in length between perpendicu-lars (such as fishing ships, tugs, small passenger shipsexcluding yachts and pleasure crafts)

Cargo ships of 65 m in length between perpendicularsand upward (such as tankers, container ships, large fish-ing vessels...)

Passenger ships of 65 m in length between perpendicu-lars and upward (such as cruise ships, ferries of 65 m inlength and upward...)

Yachts.

The notation COMF is to be completed as follows:

COMF-NOISE x: Comfort with regard to noise criteriaapplicable to specified ship category

with x = 1, 2 or 3, "1" corresponding to the most com-fortable level for both passenger and crew spaces

COMF-VIB x: Comfort with regard to vibration criteriaapplicable to specified ship category

with x = 1, 2 or 3, the overall frequency weighted r.m.s.velocity criteria, "1" corresponding to the most comfort-able level for both passenger and crew spaces, or

with x = 1PK, 2PK or 3PK, for the single amplitude peakvelocity criteria, "1PK" corresponding to the most com-fortable level for both passenger and crew spaces.

The requirements corresponding to those additional classnotations are given in Ch 6, Sec 2 to Ch 6, Sec 5 for eachconcerned ship type.

The assignment of COMF-NOISE and COMF-VIB can bedone separately for passenger and crew spaces.

COMF Pax deals with passenger comfort:

COMF-NOISE-Pax x and COMF-VIB-Pax x may begranted accordingly with different grades

COMF Crew deals with crew comfort:

COMF-NOISE-Crew x and COMF-VIB-Crew x may begranted accordingly with different grades.

1.1.2 High speed crafts which do not have the same kind ofbehaviour in the concerned fields (vibrations and noise) arenot covered by these Rules.

1.2 Basic principles

1.2.1 Granting of the comfort grade is made on the basis ofmeasurements performed by, or under supervision of anacoustic and vibration specialist from the Society duringbuilding stage, sea trials or in service. However, measure-ments may be performed by another acoustic and vibrationspecialist from external company provided that this special-ist has duly obtained the relevant delegation from the Soci-ety.

1.2.2 These Rules take into account various InternationalStandards, and are deemed to preserve their general princi-ples.

1.3 Regulations, Standards

1.3.1 NoiseThe following standards refer to the edition in force for thenoise

IMO Resolution A.468 (XII), "Code on noise levelsonboard ships"

ISO 2923, "Acoustics - Measurements of noise on boardvessels"

ISO 31/VII, "Quantities and units of acoustics"

IEC Publication 61672, "Electroacoustics-Sound levelmeters"

IEC Publication 61260, "Octave, half-octave and thirdoctave band filters

IEC Publication 60942, "Electroacoustics - Sound cali-brators"

ISO 140, "Acoustics - Measurements of sound insulationin buildings and of building elements", namely:

- Part 4, "Field measurements of airborne sound insu-lation between rooms"

- Part 7, "Field measurements of airborne impact insu-lation of floors"

- Part 13, "Guidelines"

- Part 14, "Guidelines for special situation in the field"

ISO 717, "Acoustics - Rating of sound insulation inbuildings and of building elements", namely:

- Part 1, "Airborne sound insulation in buildings andinterior elements"

- Part 2, "Impact sound insulation"

IEC Publication 60268-16, "Sound system equipment -Part 16: Objective rating of speech intelligibility byspeech transmission index".July 2011 Bureau Veritas 21

Pt E, Ch 6, Sec 11.3.2 Vibration

The following standards refer to the edition in force for thevibration

ISO 2041, "Vibration and shock - Vocabulary"

ISO 6954:1984, "Mechanical vibration and shock -Guidelines for the overall evaluation of vibration in mer-chant ships"

ISO 6954:2000, "Mechanical vibration - Guidelines formeasurements, reporting and evaluation of vibrationwith regard to habitability on passenger and merchantships"

ISO 2631, "Mechanical vibration and shock- Evaluationof human exposure to whole-body vibration"

ISO 8041, "Human response to vibration - Measuringinstrumentation".

1.4 Definitions

1.4.1 In addition to the definitions given by IMO for crewspaces and SOLAS for passenger spaces, the following defi-nitions are used in the present Chapter for the concernedships:

Passenger public spaces

- Type A public space

closed rooms normally manned at sea or recrea-tional spaces where noise is generally high (disco-theques)

- Type B public space

closed rooms permanently manned at sea wherenoise may be moderately high (restaurants, bars,cinemas, casinos, lounges)

- Type C public space

closed rooms permanently manned at sea requiringrelatively low background noise (lecture rooms,libraries, theatres)

- Type D public space

closed rooms intermittently used at sea or passageswhich do not require very low background noise(halls, atriums, shops, corridors, staircases, sportrooms, gymnasiums)

Passenger cabins

- Cabins are dealt with separately. Distinctionbetween passenger cabins categories is to be madeon the basis of Owner's specifications.

1.5 Document to be submitted

1.5.1 Prior to any sea trials, documents are to be submittedin relation with ship categories listed in Tab 1.

Table 1 : Documents to be submitted

2 Conditions of attribution

2.1 Measurements

2.1.1 Measurements aiming at giving the comfort classnotation have to be performed under the conditions speci-fied in [3].

2.1.2 Instrumentationa) General

Measurement and calibration equipments are to complywith ISO 2923, IEC 61672, IEC 61260 and IEC 60942for noise, and ISO 6954 and ISO 8041 for vibration.

b) Noise measurements

The instrumentation has to be calibrated in situ, beforeand after the tests.

c) Vibration measurements

The instrumentation has to include at least a transducer(accelerometer or velocity transducer) with an appropri-ate amplifier, and a FFT analyser. The instrumentationhas to be calibrated in situ, before and after the tests.Should the vibration measurements be performed on asoft floor, the use of a tripod mount is recommended.

2.1.3 Data processing - Analysisa) For noise level

Results have to be given on a table in global values(dB(A)).

b) For vibration level

The criteria of vibration is to be expressed either interms of overall frequency-weighted r.m.s. velocity(mm/s) from 1 to 80Hz as defined by ISO 6954:2000, orsingle frequency amplitude peak velocity from 1Hz to100Hz as defined by ISO 6954:1984 with a conversionfactor CF = 1, wich leads to:

N0 A/I Document

1 I General arrangements

2 A List of measuring points: noise level at harbour conditions (yacht only) noise level at sea conditions vibration level at sea conditions insulation measurements impact measurements

3 A Measurement program: loading conditions propulsion operating conditions other equipment to be run weather conditions measuring instruments

A = to be submitted for approval I = to be submitted for information

crest factor CF 2=

Maximum repetitive value 2 rms value=22 Bureau Veritas July 2011

Pt E, Ch 6, Sec 1c) For sound insulation

Sound insulation measurement is to be carried outaccording to ISO 140-4, ISO 140-13 and ISO 140-14.

d) For impact noise

Impact measurement is to be carried out according toISO 140-7 and ISO 140-13.

2.1.4 When it is not possible for the Society to follow or todo all the required measurements, spot-check is to be per-formed by, or under the supervision of the Society. Thisspot-check consists of a cross-comparison between:

a sample of at least 10% of the measurements providedby the shipyard/external specialist (see [2.1.4], Note 1),

and the corresponding readings obtained during thespot-check measurements.

This procedure enables the validation of the entire set ofmeasurements provided by the shipyard/external specialist.

Note 1: The maximum deviations allowed during the cross-com-parison are 2 dB(A) for noise measurements and 0,5 mm/s for vibra-tion measurements for both single amplitude peak velocity andoverall frequency weighted rms readings.

2.2 Determination of comfort rating number

2.2.1 The notation is completed by a grade 1, 2 or 3 whichrepresents the comfort level achieved for the assignment ofthe notation, the grade 1 corresponding to the most com-fortable (highest) class notation.

Regarding vibration, the notation is completed either by agrade 1, 2 or 3 or by a grade 1PK, 2PK or 3PK according tothe vibration criteria used for the assessment.

2.2.2 Measurements are to be carried out by or undersupervision of the Society.

2.2.3 Levels are measured in several locations of eachspace of the ship. The granted comfort class grade is givenon condition that none of the measured levels exceeds thecorresponding requested limits.

A tolerance on noise levels may be accepted but shall notexceed the following maximum values:

3 dB(A) for 18% of all cabins and 5 dB(A) for 2% of allcabins (with a minimum of 1 cabin).

3 dB(A) for 25% of measuring points and 5 dB(A) for 5%of measuring points, in other spaces.

1 dB for 20% of apparent weighted sound reductionindexes R'w and impact noise indexes L'n,w and 2 dBfor 10% of apparent weighted sound reduction indexesR'w and impact noise indexes L'n,w (with a minimumof 1 partition or floor).

A tolerance on vibration levels may be accepted but shallnot exceed the following maximum values:

0,3 mm/s for 20% of measuring points in all passengerand crew spaces for overall frequency weighted r.m.s.velocity criteria

0,5 mm/s for 20% of measuring points in all passengerand crew spaces for single amplitude peak velocity cri-teria.

2.3 Measuring locations

2.3.1 The list of measuring points is to be prepared prior tothe tests (see [1.5.1]). This list is to be approved by the Soci-ety and may be adjusted during the tests. Measurementsmay be performed in locations such as corridors, sanitaryspaces, when noise and vibration levels subjectively seemexcessive.

3 Testing conditions

3.1 General

3.1.1 This Article gives the conditions to be fulfilled duringmeasurements. Additional details of these conditions maybe taken from International Standards, respectively:

IMO Resolution A.468 (XII), ISO 2923 for noise

ISO 6954 for vibrations.

3.1.2 Prior to the tests, possible divergence on the requiredconditions may be accepted by the Society. If any, it is to beclearly mentioned in the report.

3.1.3 The measurement program, has to be approvedbefore the trials (see [1.5.1]). During the tests, some addi-tional measurements may be decided upon request of theSociety.

3.1.4 During measurements, especially for noise, roomshave to be preferably fully completed (outfitting, furniture,covering...). Measurements may be performed even in anunfinished state, which generally suppose better final results.

3.2 Harbour test conditions

3.2.1 Part of the noise measurement tests may be con-ducted at quay or at anchorage (impact noises, determina-tion of insulation indexes between rooms). For thesespecific tests, no particular conditions concerning output,loading conditions, water depth, weather conditions arerequired.

3.3 Sea trial conditions

3.3.1 During the sea trials, propeller output has to corre-spond to the operating conditions specification of the ship.In particular, ships which are frequently operated by meanof a Dynamic Positioning system (DP system) may requireadditional measurements to be performed in DP mode.

3.3.2 Any other frequently used equipment (more than 1/3of the time at sea) is to be run at its normal operating condi-tions (If practicable). The list of machine and equipment tobe run during the tests is, at least, to include (if present) thefollowing:

generating sets

air conditioning and machinery ventilation

evaporators

anti rolling devices

compressors, chillers

cold roomsJuly 2011 Bureau Veritas 23

Pt E, Ch 6, Sec 1 waste treatment units

swimming pool with pumps

jacuzzi and thalassotherapy equipment

laundry with the entire equipment running: drying (spindryer or tumble dryer) and washing machines (for meas-urements inside laundry, equipment is to be stopped).

3.3.3 Standard test conditions correspond to the loadingcondition defined for sea trials. Nevertheless, for cargoships which are operated over a wide range of drafts, thereadings may significantly differ from test condition toanother loading condition. Should this particular caseoccur, additional measurements may be required.

3.3.4 Tests have to be conducted in sea and weather condi-tion 3 or less. Measurements carried out with worst weatherconditions may be accepted at the sight of the results.

3.3.5 The tests have to be performed in deep water, with awater depth greater than 5 times the mean draft. However,for ships usually operating in coastal waters, measurementsmay be taken with conditions corresponding to normalservice conditions.

3.3.6 Ship course has to be kept constant, with rudderangle less than 2 degrees portside or starboard, for the dura-tion of the measurement. If ship manoeuvring is needed,measurements must be stopped until recovery of heading.24 Bureau Veritas July 2011

Pt E, Ch 6, Sec 2SECTION 2 ADDITIONAL REQUIREMENTS FOR SHIPS OF LESS THAN 65 M IN LENGTH

1 General

1.1 Application

1.1.1 The requirements of this Section are applicable to theassignment of the additional requirements for ships of lessthan 65 m in length. They are additional to the applicablerequirements of Ch 6, Sec 1.

2 COMF-NOISE

2.1 Measurement procedure

2.1.1 Measuring conditions Tests have to be conducted in the conditions described inCh 6, Sec 1, [3.3]. Air conditioning is to be in normal oper-ation. Doors and windows have to be closed, unless theyhave to be kept open in normal use.

It may happen that the measurements cannot be performedwith machinery equipments, Hvac and machinery ventila-tion in normal operation (as defined in Ch 6, Sec 1, [3.3]).In such case, additional measurements should be done atquay and taken into account in the final results.

2.1.2 Measuring positionsa) Noise measurements

Measurements are to be taken at a height between 1,2and 1,6 m from the deck and at a distance above 1,0 mfrom any boundary surface of the room. In cabins andoffices, one measurement will be performed in the mid-dle of the space. Additional measurements should beperformed in other locations if appreciable sound leveldifferences inside the room occur.

On open deck, measurements are to be taken at 2 m atleast from the existing noise sources (e.g. inlet/outlet ofventilation).

Noise is to be measured in all accommodation spaces(cabins, mess rooms, offices) in the navigation bridgeand in the engine control room, if any. On passengerships having relatively large public rooms (salons or res-taurants), noise measurements are to be carried out indifferent locations (to get a representative description ofthe noise), each measuring points covering less than20 m2.

b) Sound insulation measurements

The selection of insulation measuring locations is to berepresentative of the different types of insulation pro-vided in Tab 2 and Tab 3 (a minimum of one measure-ment of each type is required).

2.2 Noise levels

2.2.1 Noise levels in standard spaces defined in Ch 6, Sec1, [1.4] and corresponding to the noise grade x are pro-vided in Tab 1.

Noise levels described in IMO Resolution A.468 (XII) areapplicable for all locations unlisted in Tab 1.

2.3 Sound insulation measurements

2.3.1 Between two adjacent accommodation spaces,acoustic insulation has to satisfy the requirements given inTab 2 and Tab 3. Measurements are to be performed in situ,ship at quay or at anchorage.

Table 1 : Noise levels

Noise levels, in dB (A)

Locations (1) grade = 1 grade = 2 grade = 3

Wheelhouse 63 64 65

Passenger Cabins 50 54 58

Crew Cabins 55 58 60

Public spaces (type B), mess rooms 60 63 65

Passages and type D spaces 65 68 72

Engine control room 74 77 80

Open public areas 70 73 75

Other workspaces IMO resolution A 468 (XII)

(1) For the meaning of public room type A to type D, refer to Ch 6, Sec 1, [1.3.1]July 2011 Bureau Veritas 25

Pt E, Ch 6, Sec 2Table 2 : Apparent weighted sound reduction indexes Rw in dB for passenger areas

Table 3 : Apparent weighted sound reduction indexes Rw in dB for crew areas

3 COMF-VIB


3.1.1 Measuring conditionsTests are to be conducted under the conditions described inCh 6, Sec 1, [3.3].

3.1.2 Measuring positionsMeasurements are to be taken in vertical direction. In cab-ins, offices or other small size rooms, measurements are tobe taken on the floor in the centre of the room. For largerrooms, several measuring points may be required and are tobe chosen according to the local structure (measurementsof the different existing types of stiffened panels).

Vibrations are to be measured in all accommodation spaces(cabins, mess rooms, offices) in the navigation bridge and inthe engine control room, if any. On passenger ships havingrelatively large public rooms (salons or restaurants), vibra-tion measurements are to be carried out in different loca-tions (to get a representative description of the vibration),each measuring points covering less than 20 m2.

In addition to vertical direction, measurements in transverseand longitudinal directions are to be performed on onepoint of each deck.

3.2 Vibration levels

3.2.1 Vibration levels corresponding to the grade x are pro-vided in Tab 4 in accordance to ISO 6954 - 2000 (the limitslisted below are applicable for any directions).

3.2.2 Vibration levels corresponding to the grade x are pro-vided in Tab 5 and Tab 6 in accordance to ISO 6954 - 1984(the limits listed below are applicable for any directions).

Table 4 : Overall frequency weighted r.m.s. vibration levels

Table 5 : Single amplitude peak vibration levels from 5 Hz to 100 Hz

Locations grade = 1 grade = 2 grade = 3

Cabin to cabin 40 38 36

Corridor to cabin 38 36 34

Stairs to cabin 50 50 50

Public spaces to cabin 53 50 48






Vibration velocity (mm/s) values from 1 Hz to 80 Hz


Wheelhouse 3,5 4 4,5

Passenger Cabins3 3,5 4

Crew Cabins

Public spaces (type B), mess rooms (1)3 4 5

Passages and type D spaces (1)



Other workspaces 4 6 6

(1) For the definition of type A to type D public spaces, refer to Ch 6, Sec 1, [1.4.1].

Vibration velocity (mm/s peak) values from 5 Hz to 100 Hz

Locations grade = 1PK grade = 2PK grade = 3PK

Wheelhouse 3 4 5

Passenger Cabins2 2,5 3

Crew Cabins

Public spaces (type B) , mess rooms (1)3 3,5 4





(1) For the definition of type A to type D public spaces, refer to Ch 6, Sec 1, [1.4.1].26 Bureau Veritas July 2011

Pt E, Ch 6, Sec 2Table 6 : Single amplitude peak vibration levels from 1 Hz to 5 Hz

Acceleration (mm/s2 peak) values from 1 Hz to 5 Hz


Wheelhouse 96 125 157

Passenger Cabins64 80 96

Crew Cabins

Public spaces (type B), mess rooms (1)96 111 125





(1) For the definition of type A to type D public spaces, refer to Ch 6, Sec 1, [1.4.1].July 2011 Bureau Veritas 27

Pt E, Ch 6, Sec 3SECTION 3 ADDITIONAL REQUIREMENTS FOR CARGO SHIPS GREATER THAN OR EQUAL TO 65 M IN LENGTH

1 General

1.1 Application

1.1.1 The requirements of this Section are applicable to theassignment of the additional requirements for cargo shipsgreater than or equal to 65 m in length. They are additionalto the applicable requirements of Ch 6, Sec 1.

2 COMF-NOISE


2.1.1 Measuring conditions

Tests are to be conducted in the conditions described in Ch6, Sec 1, [3.3]. Air conditioning is to be in normal opera-tion. Doors and windows are to be closed, unless they areto be kept open in normal use.


2.1.2 Measuring positions

a) Noise measurements

Measurement are to be taken at a height between 1,2and 1,6 m from the deck and at a distance above 1,0 mfrom any boundary surface of the room. In cabins andoffices, one measurement will be performed in the mid-dle of the space. Additional measurements should beperformed in other locations if appreciable sound leveldifferences inside the room occur.


In the areas corresponding to Navigation spaces, Ser-vice spaces and Work spaces as described in IMOResolution A.468 (XII), measurements are to be taken oneach deck, with three measuring points in the naviga-tion bridge deck (centre line and both sides). In addi-tion, measurements are to be carried out in a minimumof 60% of the rooms on each cabins deck (includinghospital). When the engine casing is integrated in the

accommodation area, noise levels are to be measuredin each adjacent room. For large rooms exceeding20 m2 (mess rooms, recreation rooms...), noise measure-ments are to be performed every 20 m2.


The selection of insulation measuring locations is to berepresentative of the different types of insulation pro-vided in Tab 1 (a minimum of one measurement of eachtype is required).

2.2 Noise levels




2.3.1 Between two adjacent accommodation spaces,acoustic insulation is to satisfy the requirements given inTab 1. Measurements are to be performed in situ, ship atquay or at anchorage.


3 COMF-VIB


3.1.1 Measuring conditions

Tests are to be conducted under the conditions described inCh 6, Sec 1, [3.3].





Public spaces to cabin 45 45 4528 Bureau Veritas July 2011

Pt E, Ch 6, Sec 3Table 2 : Noise levels

3.1.2 Measuring positions

Measurements are to be taken in vertical direction. In cab-ins, offices or other small size rooms, measurements are tobe taken on the floor in the centre of the room. For largerrooms, several measuring points may be required and are tobe chosen according to the local structure (measurementsof the different existing types of stiffened panels).

In the areas corresponding to Navigation spaces, Servicespaces and Work spaces, measurements are to be takenon each deck, with three measuring points in the navigationbridge deck (centre line and both sides). In addition, mea-surements are to be carried out in a minimum of 60% of therooms on each cabins deck (including hospital).

In addition to vertical direction, measurements in transverseand longitudinal directions are to be performed on onepoint on each deck.


3.2.1 Vibration levels corresponding to the vibration gradex are provided in Tab 3 in accordance to ISO 6954 - 2000(the limits listed below are applicable for any directions).

3.2.2 Vibration levels corresponding to the vibration gradex are provided in Tab 4 and Tab 5 in accordance to ISO6954 - 1984 (the limits listed below are applicable for anydirections).

Table 3 : Overall frequency weighted r.m.s vibration levels



Wheelhouse 60 63 65

Radio room (1) 55 57 60

Cabins 52 55 60

Offices 57 60 65

Public spaces, mess rooms 57 60 65

Hospital 55 58 60

Engine control room (2) 70 73 75

Open recreation areas (3) 70 73 75

Galleys (2) 70 73 76

Workshops (2) 85 85 85

Alleyways, staircases and passages in crew areas 70 73 75

(1) Equipment switched on but not emitting.(2) Equipment switched on but not processing.(3) Measurement carried out with 3 Beaufort or less, with a windscreen microphone protection



Wheelhouse3,0 3,3 3,5

Radio room

Cabins 2,8 3,0 3,2

Offices 3,0 3,5 4,0

Public spaces, mess rooms 3,0 3,5 4,0

Hospital 2,8 3,0 3,2

Engine control room 4,0 5,0 6,0

Open recreation areas

Galleys5,0 5,5 6,0

Workspaces

Alleyways, staircases and passages in crew areas 5,0 5,5 6,0July 2011 Bureau Veritas 29






Radio room

Cabins 3,0 3,5 4,0

Offices 3,0 4,0 5,0

Public spaces, mess rooms 3,0 3,5 4,0




Galleys5,0 5,5 6,0

Workspaces

Alleyways, staircases and passages in crew areas 5,0 5,5 6,0



Wheelhouse64 96 125

Radio room

Cabins 96 111 125

Offices 96 125 157

Public spaces, mess rooms 96 111 125

Hospital 64 96 125



Galleys157 172 188

Workspaces

Alleyways, staircases and passages in crew areas 157 172 18830 Bureau Veritas July 2011

Pt E, Ch 6, Sec 4SECTION 4 ADDITIONAL REQUIREMENTS FOR PASSENGER SHIPS GREATER THAN OR EQUAL TO 65 M IN LENGTH

1 General

1.1 Application

1.1.1 The requirements of this Section are applicable to theassignment of the additional requirements for passengerships greater than or equal to 65 m in length. They are addi-tional to the applicable requirements of Ch 6, Sec 1.

2 COMF-NOISE


2.1.1 Measuring conditionsTests have to be conducted in the conditions described inCh 6, Sec 1, [3.3]. Air conditioning is to be in normal oper-ation. Doors and windows have to be closed, unless theyhave to be kept open in normal use.




On open decks, measurements are to be taken at 2 m atleast from the existing noise sources (e.g. inlet/outlet ofventilation).

In cabins, measurements are to be carried out at thecentre of the cabin.

In order to define the location and number of measuringpoints, the length of the ship is divided in two parts:

From the aft part of the ship to the front bulkhead ofthe casing:

- minimum of 35% of cabins,

- all public spaces and open decks.

For large public rooms (lounges, restaurants) mea-surements are to be carried out in different loca-tions, each measuring point covering less than 50m2.

From the front bulkhead of the casing to the fore endof the ship:



For large public rooms (lounges, restaurants) mea-surements are to be carried out in different loca-tions, each measuring point covering less than100m2.

Note 1: The Society may accept a lower number of measuringpoints or a modification of the points distribution for specificcases.


The selection of insulation measuring locations is to berepresentative of the different types of insulation pro-vided in Tab 1 and Tab 2 (a minimum of two measure-ments of each type is required).

c) Impact measurements

The selection of impact measuring locations is to be rep-resentative of the different deck coverings implementedon the ship (a minimum of two measurements of eachdeck covering is required).

2.2 Noise levels




2.3.1 Between two adjacent accommodation spaces,acoustic insulation has to satisfy the requirements given inTab 1 and Tab 2. Measurements are to be performed in situ,ship at quay or at anchorage.

2.4 Impact measurements

2.4.1 A weighted normalised impact sound pressure levelLn,w is to be kept below 50 dB for the cabins. It is to beincreased to 60 dB for cabins below decks covered withhard materials (wood, marble, tiles, etc). For cabins locatedbelow sport rooms or dance floors, this value is to be keptbelow 45 dB.July 2011 Bureau Veritas 31

Pt E, Ch 6, Sec 4Table 1 : Apparent weighted sound reduction indexes Rw in dB for passenger areas


Table 3 : Noise levels


Cabin to cabin (top level) 45 42 40

Cabin to cabin (standard) 41 38 36

Cabin to cabin with communication door (standard) 40 37 35

Corridor to cabin (top level) 42 40 37




Discotheques and show rooms to cabin 64 62 60





Public spaces, mess to cabin 45 45 45


Locations (1) grade = 1 grade = 2 grade = 3

Passenger top level cabins 45 47 50

Passenger standard cabins 49 53 56

Restaurants, cafeterias and type B spaces (1) 55 58 62

Public shop, passages (type D) (1) 60 63 65

Passenger spaces (type A) (1) 65 68 72

Passenger spaces (type C) (1) 53 56 59

Outside installations (swimming pools, sport decks...) (2) (4) 65 70 75

Wheelhouse 60 63 65

Radio room (3) 55 57 60


Offices 57 60 63

Crew public spaces, mess rooms 57 60 63

Hospital 55 57 60

Engine control room (3) 70 73 75

Crew open recreation areas (2) 70 73 75

Galleys (2) 70 73 76

Workshops (2) 85 85 85


(1) For the definition of type A to type D public spaces, refer to Ch 6, Sec 1, [1.3.1].(2) A tolerance of 5 dB (A) may be accepted for measurements at less than 3 m from ventilation inlet/outlet. (3) Equipment switched on but not processing.(4) Measurement carried out with 3 Beaufort or less, with a windscreen microphone protection.32 Bureau Veritas July 2011

Pt E, Ch 6, Sec 43 COMF-VIB



3.1.2 Measuring positionsMeasurements are to be taken in vertical direction. In cab-ins, offices or other small size rooms, measurements are tobe taken on the floor in the centre of the room. For largerrooms, several measuring points may be required and are tobe chosen according to the local structure (measurementsof the different existing types of stiffened panels).

In cabins, the measurements are to be carried out at thecentre of the cabin.

In order to define the location and number of measuringpoints, the length of the ship is divided in two parts:

From the aft part of the ship to the front bulkhead of thecasing:



For large public rooms (lounges, restaurants) mea-surements are to be carried out in different locations,each measuring point covering less than 50 m2.

From the front bulkhead of the casing to the fore end ofthe ship:



For large public rooms (lounges, restaurants) mea-surements are to be carried out in different locations,each measuring point covering less than 100 m2.

Note 1: The Society may accept a lower number of measuringpoints or a modification of the points distribution for specific cases.

In addition to vertical direction, measurements in transverseand longitudinal directions are to be performed every 3decks, with one measuring point in the fore part of the ship,one in the middle part and one in the aft part.



3.2.2 Vibration levels corresponding to the vibration gradex are provided in Tab 5 and Tab 6 in accordance to ISO6954 -1984 (the limits listed below are applicable for anydirections).

Table 4 : Overall frequency weighted r.m.s. vibration levels



Passenger top level cabins 1,7 2 2,2

Passenger standard cabins 2,0 2,5 3,0

Restaurants, cafeterias and type B spaces (1) 2,2 2,5 3,0

Public shops, passages (type D) (1)4,0 4,5 5,0

Passenger spaces (type A) (1)

Passenger spaces (type C) (1) 2,0 2,5 3,0

Outside installations (swimming pools, sport decks ...) 3,0 3,5 4,0


Radio room

Crew Cabins 2,8 3,0 3,2

Offices 3,0 3,5 4,0

Crew public spaces, mess rooms 3,0 3,5 4,0



Crew open recreation areas

Galleys5,0 5,5 6,0

Workspaces


(1) For the definition of type A to type D public spaces, refer to Ch 6, Sec 1, [1.3.1].July 2011 Bureau Veritas 33





Passenger top level cabins 1,5 2,0 2,5

Passenger standard cabins 2,0 2,5 3,0

Restaurants, cafeterias and type B spaces (1) 2,5 3,0 3,5

Public shops, passages (type D) (1)4,0 4,0 4,0


Passenger spaces (type C) (1) 2,0 2,5 3,0

Outside installations (swimming pools, sport decks ...) 3,0 4,0 4,0


Radio room

Crew Cabins 3,0 3,5 4,0

Offices 3,0 4,0 5,0

Crew public spaces, mess rooms 3,0 3,5 4,0




Galleys5,0 5,5 6,0

Workspaces


(1) For the definition of type A to type D public spaces, refer to Ch 6, Sec 1, [1.3.1].



Passenger top level cabins 48 64 80

Passenger standard cabins 64 80 96

Restaurants, cafeterias and type B spaces (1) 80 96 111

Public shops, passages (type D) (1)125 125 125


Passenger spaces (type C) (1) 64 80 96

Outside installations (swimming pools, sport decks ...) 96 125 125

Wheelhouse96 103 111

Radio room


Offices 96 111 125

Crew public spaces, mess rooms 96 111 125

Hospital 89 96 96



Galleys157 172 188

Workspaces


(1) xxFor the definition of type A to type D public spaces, refer to Ch 6, Sec 1, [1.3.1].34 Bureau Veritas July 2011

Pt E, Ch 6, Sec 5SECTION 5 ADDITIONAL REQUIREMENTS FOR YACHTS

1 General

1.1 Application

1.1.1 The requirements of this Section are applicable to theassignment of the additional requirements for yachts. Theyare additional to the applicable requirements of Ch 6, Sec 1.

2 COMF-NOISE


2.1.1 Measuring conditionsFor noise level measurements in harbour conditions,machinery and chiller should be run under normal harbourcondition. Hvac and machinery ventilation must be in oper-ation and at nominal rate all over the ship.

Tests in sea trial conditions are to be conducted in the con-ditions described in Ch 6, Sec 1, [3.3]. Air conditioning is tobe in normal operation. Doors and windows are to beclosed, unless they are to be kept open in normal use.





The noise measurements are to be performed in all pas-senger spaces, each measuring point covering less than15 m2.

b) Sound insulation measurements The selection of insulation measuring locations is to berepresentative of the different types of insulation pro-vided in Tab 1 (a minimum of two measurements ofeach type is required).

c) Impact measurementsThe selection of impact measuring locations is to be rep-resentative of the different deck coverings implementedon the ship (a minimum of two measurements of eachdeck covering is required).

2.2 Noise levels

2.2.1 Noise levels in standard spaces defined in Ch 6, Sec 1,[1.3] and corresponding to the noise grade x are provided inTab 2.Noise levels described in IMO Resolution A.468 (XII) areapplicable for all locations unlisted in Tab 2.

2.3 Sound insulation measurements2.3.1 Between two adjacent accommodation spaces,acoustic insulation has to satisfy the requirements given inTab 1. Measurements are to be performed in situ, ship atquay or at anchorage. Table 1 : Apparent weighted sound reduction indexes

Rw in dB

Table 2 : Owner and guest area






Public spaces designed for loud music to cabin

63 60 58


LocationsHarbour Sea

grade = 1 grade = 2 grade = 3 grade = 1 grade = 2 grade = 3

Wheelhouse 65 65 65

Cabins 40 45 50 50 55 60

Lounges 45 50 55 55 58 62

Open recreation areas (1) 55 60 65 75 80 85

(1) Measurement carried out with 3 Beaufort or less, with a windscreen microphone protectionJuly 2011 Bureau Veritas 35

Pt E, Ch 6, Sec 52.4 Impact measurements

2.4.1 A weighted normalised impact sound pressure levelLn,w is to be kept below 50 dB for the cabins. It is to beincreased to 60 dB for cabins below decks covered withhard materials (wood, marble, tiles, etc). For cabins locatedbelow sport rooms or dance floors, this value is to be keptbelow 45 dB.

3 COMF-VIB



3.1.2 Measuring positionsMeasurements are to be taken in vertical direction. In cab-ins, offices or other small size rooms, measurements are tobe taken on the floor in the centre of the room. For larger

rooms, several measuring points may be required and are tobe chosen according to the local structure (measurementsof the different existing types of stiffened panels).

Measurements are to be performed in all passenger spaces,each measuring point covering less than 15 m2.

In addition to vertical direction, measurements in transverseand longitudinal directions are to be performed on onepoint on each deck.



3.2.2 Vibration levels corresponding to the vibration gradex are provided in Tab 4 and Tab 5 in accordance to ISO6954 - 1984 (the limits listed below are applicable for anydirections).

Table 3 : Overall frequency weighted r.m.s vibration levels





grade = 1 grade = 2 grade = 3 grade = 1 grade = 2 grade = 3

Wheelhouse 2,5 3,5 4,5

Cabins 1,0 1,5 2,0 2,0 2,5 3,0

Lounges 1,0 1,5 2,0 2,0 2,5 3,0

Open recreation areas 2,0 3,0 3,5 3,0 4,0 4,5



grade = 1PK grade = 2PK grade = 3PK grade = 1PK grade = 2PK grade = 3PK

Wheelhouse 2,5 3,5 5

Cabins 1,0 1,5 2,5 3,0 3,5 4,0

Lounges 1,0 1,5 2,5 3,0 3,5 4,0

Open recreation areas 2,0 3,0 4,0 3,5 4,5 5,0



grade = 1PK grade = 2PK grade = 3PK grade = 1PK grade = 2PK grade = 3PK

Wheelhouse 80 111 157

Cabins 32 48 78 64 96 125

Lounges 32 48 78 64 80 125

Open recreation areas 64 48 125 80 125 15736 Bureau Veritas July 2011

Pt E, Ch 6, Sec 54 COMF +

4.1 Application

4.1.1 Optional COMF + notation represents an advancedcomfort rating with additional performance index require-ments.

Note 1: The present Article may also be applied, after special study,to passenger ships.

4.1.2 Prior to the COMF+ notation assessment, COMF-NOISE notation is to be granted.

4.1.3 The following COMF+ performance indexes can begranted separately:

COMF+ Sound insulation index

COMF+ Impact index

COMF+ Emergence

COMF+ Intermittent noise

COMF+ Intelligibility.

4.2 Data processing - Analysis

4.2.1 Results are to be given on a table in global values(dB(A) or dB for insulation measurements).


4.3.1 Measuring conditionsTests are to be conducted in the conditions described in Ch 6,Sec 1, [3.3] and [2.1.1].

Specific additional conditions are described in the relevantCOMF+ index requirements.

4.3.2 Measuring positionsThe location of the measuring positions is selected in accor-dance with [2.1.2] for the following indexes:

COMF+ Sound insulation index

COMF+ Impact index

COMF+ Emergence.

4.4 COMF + Sound insulation index

4.4.1 Sound insulation between discotheques, show lounge and passenger cabins

Due to the potential low frequency noise, transmittedthrough floors or bulkheads, the sound insulation indexrequirement is to be considered as the sum of the R'w index+ the adaptation term C as described in ISO 717-1.

The adaptation term C added to the R'w index is to beabove the insulation level given in Tab 6.

Table 6 : Sound insulation indexes R'w+C

4.5 COMF + Impact index

4.5.1 Due to the potential low frequency noise, transmittedthrough the floor, the impact noise index requirement is tobe considered as the sum of the L'n,w index + the adapta-tion term CI as described in ISO 717-2.

The adaptation term CI added to the L'n,w index is to bebelow any impact comfort class requirements listed in [2.4.1].

4.6 COMF + Emergence

4.6.1 When the noise level contains subjectively annoyinglow frequency or tonal components, the noise rating (NR)number should be used.

To establish the NR number, the linear third octave bandlevels should be plotted on the NR curve graph (See ISO1996). The NR numbers correspond to the highest NR curveto which the linear levels are tangent.

Getting a NR number below the mesured A-weighted valueinduces to consider the specified criterion satisfied.

4.7 COMF + intermittent noise

4.7.1 Machinery and systems having an intermittent opera-tion are not to increase the noise level in cabins, withregard to ambient noise, by more than 5 dB(A) during day-time (from 7 am to 10 pm) and 3 dB(A) during night time(from 10 pm to 7 am).

4.7.2 The shipyard is to propose an intermittent noise mea-suring program including:

the complete procedure of measurements

the exhaustive list of system which includes, whenapplicable:

- swimming pool/Jacuzzi equipments and piping dur-ing filling/emptying/re-circulating

- dishwasher/pulper

- high pressure deck washing piping systems

- hydraulic power pack

- evaporators

- stabiliser systems

- steam dump valve

- laundry/garbage equipments

the ambient noise considered for each system (i.e. noiseat quay or at sea conditions).

Anchoring, mooring, thrusters, safety alarms, emergencyequipments are excluded from the list of machinery systemsconcerned by this paragraph.

This program is to be submitted to the Society prior to thetrials.

4.8 COMF + intelligibility

4.8.1 In public spaces like theatres, dancing rooms, cine-mas, conference rooms, restaurants, the architectural designis to take into account the speech or music intelligibility. Inorder to maintain a sufficient quality, the RASTI index is tobe above 0,60 (for each public space, measurements are to

Locations Ng = 1 Ng = 2 Ng = 3

Discotheques and show rooms to Cabin

64 62 59July 2011 Bureau Veritas 37

Pt E, Ch 6, Sec 5be carried out in different locations, each measuring pointcovering less than 40 m2).

The Society may accept a lower number of measuringpoints or a modification of the point distribution for specificcases.

Note 1: The evaluation of the Rapid Speech Transmission Index(RASTI) has been standardised in IEC 60268-16.

4.8.2 An Intelligibility noise measuring program is to besubmitted to the Society, prior to measurement test.38 Bureau Veritas July 2011

Part EAdditional Class Notations

Chapter 7

REFRIGERATING INSTALLATIONS (REF)

SECTION 1 GENERAL REQUIREMENTS

SECTION 2 ADDITIONAL REQUIREMENTS FOR NOTATION REF-CARGO

SECTION 3 ADDITIONAL REQUIREMENTS FOR NOTATION REF-CONT

SECTION 4 ADDITIONAL REQUIREMENTS FOR NOTATION REF-STOREJuly 2011 Bureau Veritas 39

40 Bureau Veritas July 2011

Pt E, Ch 7, Sec 1SECTION 1 GENERAL REQUIREMENTS

1 General

1.1 Application

1.1.1 The notations given in [1.1.1] may be completed bythe following:

PRECOOLING for refrigerating plants designed forensuring within a suitable time interval the coolingdown of a complete cargo of fruit or vegetables to therequired temperature of transportation

QUICKFREEZE for refrigerating plants of fishing vesselsand fish factory ships where the design and equipmentof such plants have been recognised as suitable to per-mit quick-freezing of fish in specified conditions.

The notations REF-CARGO and REF-CONT may be com-pleted by AIRCONT for ships fitted with a controlled atmo-sphere plant on board.

1.1.2 The requirements of this Chapter apply to refrigerat-ing installations on ships, and include the fixed plants forrefrigerating holds of cargo ships, fishing and factory ships,fruit and juice carrier ships, etc., refrigerated containers,various ships services, such as air conditioning, galleys, etc.These requirements are specific to permanently installedrefrigerating installations and associated arrangements andare to be considered additional to those specified in Pt C,Ch 1, Sec 13, which are mandatory for all ships with refrig-erating installations.

1.1.3 The notations given in [1.1.1] may be completed bythe following:

PRECOOLING for refrigerating plants designed forensuring within a suitable time interval the coolingdown of a complete cargo of fruit or vegetables to therequired temperature of transportation

QUICKFREEZE for refrigerating plants of fishing vesselsand fish factory ships where the design and equipmentof such plants have been recognised as suitable to per-mit quick-freezing of fish in specified conditions.

The notations REF-CARGO and REF-CONT may be com-pleted by AIRCONT for ships fitted with a controlled atmo-sphere plant on board.

1.1.4 The notations REF-CONT may be completed by (A)or (E) as defined in Ch 7, Sec 3, [1.1.2].

1.2 Temperature conditions

1.2.1 Cargo space conditionsThe minimum internal temperature or the temperaturerange for which the notation is granted is to be mentioned

in the notation. For design temperatures to be consideredfor designing the plant, see [2.1.1] and [2.1.2].

This indication is to be completed by the mention of anyoperational restriction such as maximum sea water temper-ature, geographical or seasonal limitations, etc., as applica-ble.

1.2.2 Container conditionsFor refrigerating plants on board container ships complyingwith the provisions of Ch 7, Sec 3, in addition to the datalisted in [1.2.1], the notation is to specify the maximumnumber of containers liable to be served, and the value oftheir heat transfer coefficient

k : in W/(m2 C), or

U : k S, in W/C,

where S is the surface through which the heat is transferred,in m2, as determined by type tests.

1.3 Definitions

1.3.1 Direct cooling systemDirect cooling system is the system by which the refrigera-tion is obtained by direct expansion of the refrigerant incoils fitted on the walls and ceilings of the refrigeratedchambers.

1.3.2 Indirect cooling systemIndirect cooling system is the system by which the refrigera-tion is obtained by brine or other secondary refrigerant,which is refrigerated by a primary refrigerant, circulatedthrough pipe grids or coils fitted on the walls and ceilings ofthe refrigerated chambers.

1.3.3 Air cooling systemDirect air cooling system is the system by which the refrig-eration is obtained by circulation of air refrigerated by an aircooler.

1.3.4 RefrigerantRefrigerant is a cooling medium which is used to transmitand maintain the cool in the refrigerated chamber.

1.3.5 BrineBrine is a refrigerant constituted by a solution of industrialsalts, which is normally used to cool the chambers in theindirect cooling systems, as secondary refrigerant. In gen-eral, in this Chapter, the word brine is also used to coverother types of secondary refrigerants, as for instance refrig-erants based on glycol.

1.3.6 Refrigerating unitA refrigerating unit includes one or more compressorsdriven by one or more prime movers, one condenser and allthe associated ancillary equipment necessary to form anJuly 2011 Bureau Veritas 41

Pt E, Ch 7, Sec 1independent gas-liquid system capable of cooling refriger-ated chambers.

When the installation includes a secondary refrigerant(brine), the refrigerating unit is also to include a brine cooler(evaporator) and a pump.

1.3.7 Refrigerated chamber

A chamber is any space which is refrigerated by a refrigerat-ing unit. A chamber may be a cargo space or any other shipservice space, such as for instance the galley.

2 Design criteria

2.1 Reference conditions

2.1.1 Design temperature

Unless otherwise indicated in the specification, refrigeratingplants are to be designed for the following design tempera-tures:

Frozen cargo: minus 20C

Fish: minus 20C

Fruit: 0C

Bananas: 12C.

2.1.2 Environmental conditions

Unless otherwise indicated in the ship specification, the fol-lowing environmental conditions are to be considered forthe heat transfer and balance calculations and for the run-ning rate of the refrigerating machinery:

Sea water temperature: 32C

Outside air temperature: 35C

Relative humidity of air at 35C: 80%.

For the determination of heat transfer through outside wallsliable to be exposed to sun radiation, the outside air tem-perature is to be taken as equal to 45C.

2.1.3 Operating conditions

The refrigerating plant inclusive of all machinery, equip-ment and accessories is to operate satisfactorily under theconditions indicated in Tab 1.

Table 1 : Operating conditions

3 Documentation

3.1 Refrigerating installations

3.1.1 Plans to be submittedThe plans listed in Tab 2 are to be submitted as applicable.

The listed plans are to be constructional plans completewith all dimensions and are to contain full indication oftypes of materials employed.

Plans of equipment which are type approved by the Societyneed not be submitted, provided the types and model num-bers are made available.

3.1.2 Calculations to be submittedThe calculations listed in Tab 3 are to be carried out inaccordance with criteria agreed with the Society and are tobe submitted.

3.2 Controlled atmosphere installations

3.2.1 The plans listed in Tab 4 are to be submitted.

4 General technical requirements

4.1 Refrigeration of chambers

4.1.1 Refrigerating systemsRefrigeration of the chambers may be achieved by one ofthe following systems:

direct cooling system

indirect cooling system

air cooling system.

4.1.2 Cold distributiona) The chambers may be refrigerated either by means of

grids distributed on their walls or by means of air circu-lation on air coolers.

b) Grids and/or air coolers may be supplied either by brineor by a direct expansion system depending on the typeof refrigerating system.

4.2 Defrosting

4.2.1 Availabilitya) Means are to be provided for defrosting air cooler coils,

even when the refrigerated chambers are loaded to theirmaximum. Air coolers are to be fitted with trays and gut-terways for gathering condensed water.

b) The defrosting system is to be designed so that defrost-ing remains possible even in the case of failure of anessential component such as a compressor, a circulationpump, a brine heater or a heating resistance.

4.2.2 DrainingArrangements are to be made to drain away the condensateeven when the refrigerated chambers are loaded to theirmaximum. See [5.8] for specific requirements.

Length of ship (m) < 100 < 200 300 > 300

Permanent list 15 1