Rules and Regulations for the Construction and Classification of Steel Ships. Part 1. Regulations. January 2011

Transcription

1 Rules and Regulations for the Construction and Classification of Steel Ships Part 1 January 2011 Regulations

2 Rules and Regulations for the Construction and Classification of Steel Ships-2011 Page 2 of 4 Section/ Clause Subject/amendment Part 2 Chapter 3 : Rolled Steel plates, strips, sections and bars Amendments in this chapter are applicable to vessels contracted for construction on or after 01 January 2011 and when the application for certification of steel plates is dated on or after 01 January /1.4.1, 1.4.2, Definition of minus and plus tolerances on nominal thickness are given. Under thickness tolerance is changed to minus tolerance. 1/1.4.5 Plus tolerance on nominal thickness to be as per recognized national or international standards or as specified. 1/ It is clarified that tolerance on nominal thickness are not applicable to areas repaired by grinding. 1/1.4.9, Responsibilities of manufacturer and the shipyard respectively, regarding production within tolerances and proper storage of delivered products are specified. 1/ It is clarified that requirements for average thickness and thickness measurements will not apply if zero minus tolerances are applied as per ISO / Requirement added for complying with average thickness, as defined. The existing clause is deleted in view of the new requirement for average thickness. 1/ , , Fig Requirement for thickness measurement and the locations for measurement are specified. Existing requirement in is deleted. Part 3 Chapter 13 : Ventilators, Airpipes and Discharges 4/4.1.7 Requirements for drainage of enclosed cargo spaces on the bulkhead deck of passenger ships or on the freeboard deck of cargo ships as per SOLAS II-1/Reg 35 are incorporated. This SOLAS regulation is already in force 4/4.1.8 Cross reference given to existing requirement for drainage of closed vehicle and ro-ro spaces and special category spaces in Part 6 Ch 7. Part 4 Chapter 1 : General requirements for the design and construction of machinery Amendments in this chapter are applicable from 01 January / Installation of materials which contain asbestos is prohibited. Part 4 Chapter 3 : Pumping and Piping 2/ Cross reference given to existing requirement for bilge pump capacity of closed vehicle and ro-ro spaces and special category spaces in Part 6 Ch 7.

3 Rules and Regulations for the Construction and Classification of Steel Ships-2011 Page 3 of 4 Section/ Subject/amendment Clause Part 5 Chapter 6 : Passenger vessels 2/2.5.1, SOLAS II-1 Reg. 8-1 regarding system capabilities for return to port after a flooding casualty is incorporated. This SOLAS requirement is applicable to vessels constructed on or after 01 July 2010 Part 5 Chapter 32 : Polar class All This chapter is effective from 01 July 2011 New chapter covering class notations and structural & machinery requirements for Polar Class ships is added to the Rules. Part 6 Chapter 1 : General 1/ Applicability dates of SOLAS requirements for carriage of dangerous goods to existing ships are indicated based on amendments to SOLAS II-2 Reg.1. Part 6 Chapter 5 : Operational requirements This SOLAS amendment is effective from 01 January 2011 Amendments in this chapter are effective from 01 January /3.2.1 Reference to BC Code is replaced by reference to IMSBC Code. Part 6 Chapter 7 : Special requirements 2/2.2.1 It is clarified that dangerous goods carried in excepted quantities as per chapter 3.5 of the IMDG Code need not comply with the requirements of section 2. 2/ , IR , 2.4 Effective from 01 January 2011 It is clarified that protective clothing is to be selected taking into account the hazards associated with the chemicals being transported. References to BC Code replaced by the IMDG Code. Effective from 01 January / Table 2.1 Note 1: It is clarified that for Solids of classes 4 (Flammable solids/ substances liable to spontaneous combustion etc) and 5.1 (oxidizing substances), the requirement of ventilation in (six air changes per hour) and (non sparking type fan) are not applicable when carried in closed containers. It is also clarified that for liquids of classes 4 and 5.1, when carried in closed freight containers, ventilation rate may be reduced to 2 air changes per hour. Effective from 01 January / Table 2.2 Reference to BC Code is replaced by reference to IMSBC Code. Effective from 01 January 2011

4 Rules and Regulations for the Construction and Classification of Steel Ships-2011 Page 4 of 4 Section/ Subject/amendment Clause 2/ Table 2.3 Class 4.3 (Substances which when in contact with water emit flammable gases) is subdivided into liquids and solids with separate requirements. Note 16: Class 5.2 dangerous goods (organic peroxides) is prohibited for storage under deck or in enclosed ro-ro spaces Note 17: For Miscellaneous dangerous goods of Class 9, Requirements in (safe type electrical equipment) and (non sparking type fans) apply on if they evolve flammable vapour. Note 18: Requirement for safe type electrical equipment (2.3.2) applies only to liquids having flash point less than 23 deg. Note 19: For Corrosive liquids (Class 8) of flash point 23 deg C and above, Bilge pumping related requirements in 2.3.5apply only for substances which are toxic. Note 20: Class 2.3 (toxic gases) which are flammable are prohibited for stowage under deck or in enclosed ro-ro spaces. Note 21: Stowage of class 4.3 liquids of flash point less than 23 deg C is prohibited under deck or in enclosed ro-ro spaces Effective from 01 January / IR Requirements added for qualitative failure analysis of propulsion and steering systems of passenger ships. Applies to passenger ships with return to port capability as per SOLAS, constructed on or after 01 July For other passenger ships, this requirement is to be applied when contracted on or after 01 January 2011

5 Part 1 Regulations Contents Chapter 1 Chapter 2 General Periodical Surveys

6 Rules and Regulations for the Construction and Classification of Steel Ships Page 1 of 4 Contents Chapter 1 : General Section 1 : General Information Fees 1.3 Technical committee 1.4 Survey reports 1.5 Register of Ships 1.6 Liability 1.7 IACS QSCS audits 1.8 Access of Surveyor to ships, shipyards or works 1.9 Requirements for service suppliers 1.10 Responding to Port State Control Section 2 : Classification Regulations 2.1 General 2.2 Application of Rules 2.3 Scope of classification 2.4 Interpretations of the Rules 2.5 Definitions 2.6 Character of classification 2.7 Class notations - Hull 2.8 Class notations - Machinery 2.9 Materials 2.10 Request for surveys 2.11 Repairs 2.12 Alterations 2.13 Classification of new constructions 2.14 Date of contract for construction 2.15 Date of build 2.16 Appeal from Surveyors' recommendations 2.17 Certificates 2.18 Suspension, withdrawal and deletion of class 2.19 Reclassification of ships 2.20 Condition improvement program Section 3 : Classification of Ships not Built under the Survey of Indian Register of Shipping 3.1 General procedure for classification of ships not built under survey of IRS 3.2 Plans and data to be furnished as required in Appendix 1 : Table of characters of class and type notations of IRS, their expanded form and significance Chapter 2 : Periodical Surveys Section 1 : General Requirements 1.1 General 1.2 Definitions 1.3 Laid up vessels 1.4 Surveys by Chief Engineers 1.5 Surveys for damage or alteration 1.6 Unscheduled surveys 1.7 Provision for surveys 1.8 Surveys at sea or at anchorage 1.9 Repairs

7 Page 2 of Thickness measurements and close-up surveys 1.11 Extension of special surveys Section 2 : Surveys - Bulk Carriers and Ore Carriers 2.1 Scope 2.2 Annual surveys 2.3 Intermediate Surveys 2.4 Special Surveys - Hull 2.5 Special Surveys - Machinery Section 3 : Surveys - Oil Tankers, Ore or Oil Carriers, Oil or Bulk Carriers 3.1 Scope 3.2 Annual surveys 3.3 Intermediate Surveys 3.4 Special Surveys - Hull 3.5 Special Surveys - Machinery Section 4 : Surveys - Chemical Tankers 4.1 Scope 4.2 Annual surveys 4.3 Intermediate Surveys 4.4 Special Surveys - Hull 4.5 Special Surveys - Machinery Section 5 : Surveys - Liquefied Gas Carriers 5.1 Scope 5.2 Annual surveys 5.3 Intermediate Surveys 5.4 Special Surveys - Hull 5.5 Special Surveys - Machinery Section 6 : Surveys - Other Ship Types 6.1 Scope 6.2 Annual surveys 6.3 Intermediate surveys 6.4 Special Surveys - Hull 6.5 Special Surveys - Machinery Section 7 : Docking Surveys 7.1 General 7.2 In-water surveys 7.3 Machinery verification runs Section 8 : Machinery - Special Surveys 8.1 General 8.2 Continuous survey of machinery (CSM) 8.3 Survey requirements: Auxiliary engines Part 1 Contents 8.4 Survey requirements: Air compressors, receivers and starting air pipes 8.5 Survey requirements: Fresh water generators and evaporators 8.6 Survey requirements: Fuel tanks 8.7 Survey requirements: Pumps, heat exchangers, forced draught fans, etc. 8.8 Survey requirements: Pumping and piping system 8.9 Survey requirements: Reduction gears, flexible couplings and clutch arrangements 8.10 Survey requirements: Securing arrangements 8.11 Survey requirements: Shafting 8.12 Survey requirements: Sea connections 8.13 Survey requirements: Windlass and steering machinery 8.14 Survey requirements: Internal combustion engines for propulsion 8.15 Survey requirements: Steam turbines for propulsion

8 Rules and Regulations for the Construction and Classification of Steel Ships Page 3 of Survey requirements: Steam reciprocating engines for propulsion 8.17 Survey requirements: Gas turbines and free piston gas generators for propulsion 8.18 Survey requirements: Unattended machinery spaces/remote control systems 8.19 Survey requirements : Electrical equipment survey 8.20 Survey requirements : Electrical propelling machinery 8.21 In service testing of large permanently installed breathing gas containers onboard diving vessels - Special Requirements Section 9 : Boiler Surveys 9.1 General 9.2 Steam heated steam generator Section 10 : Steam Pipes Surveys 10.1 General 10.2 Cylindrical boilers having smoke tube superheaters 10.3 Copper pipes Section 11 : Surveys of Propeller Shafts, Tube Shafts and Propellers 11.1 General 11.2 Scope of survey 11.3 Modified survey 11.4 Partial survey 11.5 Tailshaft Condition Monitoring (TCM) Section 12 : Surveys of Inert Gas Systems 12.1 General 12.2 Annual surveys 12.3 Special surveys Section 13 : Surveys of Vessels with Refrigerated Cargo Installations 13.1 General 13.2 Periodical surveys 13.3 Continuous special survey of refrigerating installation 13.4 Annual survey requirements 13.5 Requirements of first special survey 13.6 Subsequent special surveys 13.7 Loading port surveys Section 14 : Planned Maintenance System 14.1 General 14.2 Machinery acceptable for survey by Chief Engineers under Planned Maintenance System 14.3 Machinery not acceptable for survey by Chief Engineers 14.4 System Administration 14.5 System implementation 14.6 System surveys 14.7 Damage and repairs 14.8 Guidelines for machinery items surveyed on the basis of condition monitoring Section 15 : Surveys Vapour Control Systems 15.1 For tankers and combination carriers with notation VCS For tankers and combination carriers with notation VCS2 Section 16 : Surveys of Thermal Oil Heating Systems 16.1 General 16.2 Oil fired thermal oil heater and economiser 16.3 Circulating pumps 16.4 Dump cooler

9 Page 4 of Piping arrangement 16.6 Expansion tank 16.7 Alarms and safety devices 16.8 Thermal oil analysis 16.9 System operation test Part 1 Contents Section 17 : Surveys of external Fire Fighting Systems 17.1 General 17.2 Annual survey 17.3 Special survey Repairs End of Chapter

10 Rules and Regulations for the Construction and Classification of Steel Ships Page 1 of 22 Chapter 1 General Section Contents 1 General Information 2 Classification Regulations 3 Classification of Ships not built under the Survey of Section 1 General Information (hereinafter referred to as "IRS") was incorporated in 1975 as a Public Limited Company under Section 25 of the Indian Companies Act, 1956 for the purpose of providing amongst other things a faithful and accurate classification of mercantile shipping classed with it, to approve designs of, to survey and to issue reports on mercantile and non mercantile ships, hovercrafts, hydrofoils etc; all within the scope of classification described in the Rules. This Section contains General Regulations which have been adopted by IRS for its governance The management of the affairs of IRS are carried out under the direction and control of the Board of Directors (hereinafter referred to as the 'Board'), in accordance with the provisions of its Memorandum and Articles of Association The Board of Directors shall consist of representative of the interests of various members of the Company and those concerned with shipping in general as under: 3 Directors representing Indian Shipowners 2 Directors representing Indian Shipbuilders 1 Director representing General Insurance Corporation of India and other Indian underwriters 1 Director being the Director General of Shipping, Ministry of Surface Transport, Govt. of India 1 Director representing Ship Design Research and Development Institutions 1 Director representing Manufacturers of Marine Engines/General Engineering Goods 1 Director representing Indian Navy/Coast Guard 1 Director being a person of eminence from the field of Law 3 Directors being persons of eminence from any industry allied with maritime activities 1 Managing Director being full-time employee appointed by the Board of Directors. The composition of the Board as above is to be in accordance with the Articles of Association of IRS (as may be amended from time to time) The Board shall consist of not less than six and not more than fifteen Directors. The Board of Directors shall elect one of its members to be Chairman of the Board of Directors The Board is to appoint a Sub-Committee of Classification representing concerned interests.

11 Chapter 1 Part 1 Page 2 of 22 General The Board is to appoint the Chairman of the Sub-Committee of Classification and the Managing Director, IRS to be 'ex- officio' member of the Sub-Committee of Classification The employees of IRS are to be appointed by and be under the direction of the Board The Surveyors of IRS are not to be permitted without the special sanction of the Board of Directors to receive any fee, gratuity or reward whatsoever, for their own use or benefit, for any service performed by them in their capacity as Surveyors to IRS, except on pain of immediate dismissal The Funds and Accounts are to be under the authority and control of the Board of Directors. 1.2 Fees Fees will be charged for all surveys and for other services rendered by IRS or any of its publications in accordance with established scales. Traveling expenses incurred by the Surveyors in connection with such services are also chargeable. 1.3 Technical committee The Board is to appoint a Technical Committee whose function will be to consider:- a) Formulation of Technical Rules for Classification Surveys, building of ships, their machinery and equipment. b) Important alterations to Rules once framed as may be required from time to time All decisions of the Technical Committee including amendments and/or additions to the Rules for classification surveys and building of ships' hull, their machinery and equipment to be reported to the Board of Directors The Technical Committee to be constituted as follows: Number of Members Nominees/Representatives of 3 Board of Directors of IRS 1 Marine Engine Unit of M/s. Garden Reach Shipbuilders and Engineers Ltd. 1 Other Marine Engine Builders 6 Shipbuilders 1 Indian Institution of Naval Architects 1 Institution of Marine Technologists 1 Institute of Marine Engineers (India) 1 Company of Master Mariners 1 Directorate General of Shipping 1 National Ship Design & Research Centre 4 Indian National Shipowners Association 1 Institution of Engineers (India) 1 Ex-Officio - Managing Director of IRS In addition to the foregoing, the Technical Committee may co-opt to the main body other members of high managerial positions in Ship Building and Engineering, Naval Architecture, Marine Insurance, Steel Making, etc Nomination of all members to the Technical Committee to be subject to confirmation by the Board The Technical Committee can appoint panels from amongst its body to which representatives of any organisation or industry or individuals specialised in relevant disciplines could be co-opted for the purpose of considering any particular Technical problem or area of Rules.

12 Rules and Regulations for the Construction and Classification of Steel Ships Page 3 of The Board of Directors to appoint biennially, the Chairman of the Technical Committee and the Technical Committee to appoint from their own body biennially a Vice- Chairman. The same members are not to be eligible to hold office of Chairman or Vice- Chairman, as the case may be, for more than two terms in succession unless on the occasion of the third term, the appointing body approves of their continuation by a majority of at least three-fourths of the members present. The appointment of Vice-Chairman to be confirmed by the Board of Directors The terms of office of all members to be not more than four years, one-fourth of all members (including those co-opted) to retire at the end of each calender year. The members so retiring being those who have been longest in office since their last nomination and such members to be eligible for re-nomination for a second term. Unless specially so authorised by the Board of Directors, no member other than Chairman and/or Vice- Chairman, who has served for two periods of nomination, to be eligible for re-nomination for a third term until after the expiration of at least one year. In the event of any vacancy occurring before the expiration of the normal term of office, a representative to be nominated to fill the vacancy from the same group/body/institution and for such nominee the date of his nomination by the respective body to be considered as date of his joining the Technical Committee for purposes of his retirement by rotation The meeting of the Technical Committee to be convened as often and at such time and place as may appear necessary, but there shall be at least two meetings in each year The members desiring to propose alterations in, or additions to the Rules for the classification, survey or building of ship (hull and machinery) shall give notice of such proposals to the Secretary. Every meeting to be convened by notice from the Secretary, if possible one month before the date of the meeting and the Secretary to send to each member an Agenda paper as soon as possible thereafter The Board of Directors reserves to themselves the right of altering, adding to or rescinding any/or all of the above terms of reference including the dissolution of the Technical Committee. 1.4 Survey reports All reports of survey are to be made by the Surveyors according to the form prescribed and submitted for consideration of the Board or the Sub-Committee of Classification, but the character assigned by the latter is to be reported to the Board. The Board may, in specified instances, vest in the Managing Director discretionary powers to act on its behalf, and all such actions being reported to the Board at its subsequent meeting The reports of the Surveyors shall, subject to the approval of the Managing Director, be open to inspection of the Owner and any other person authorised in writing by the Owner. Copies of the reports will, subject to the approval of the Managing Director, be supplied to Owners or their representatives. 1.5 Register of Ships A Register Of Ships to be printed annually for the use of subscribers contains the names of ships, character of class notations assigned together with other relevant useful information for ships classed with IRS or registered in India. 1.6 Liability Whilst (hereinafter referred to as IRS) and its Board/Committees use their best endeavours to ensure that the functions of IRS are properly carried out, in providing services, information or advice, neither IRS nor any of its servants or agents warrants the accuracy of any information or advice supplied. Except as set out herein, neither IRS nor any of its servants or agents (on behalf of each of whom IRS has agreed this clause) shall be liable for any loss damage or expense whatever sustained by any person due to any act or omission or error of whatsoever nature and howsoever caused of IRS, its servants or agents or due to any inaccuracy of whatsoever nature and howsoever caused in any information or advice given in any way whatsoever by or on behalf of IRS, even if held to amount to a breach of warranty. Nevertheless, if any person uses services of IRS, or relies on any information or advice given by or on behalf of IRS and suffers loss, damage or expenses thereby which is proved to have been due to any negligent act omission or error of IRS its servants or agents or any negligent inaccuracy in information or advice given by or on behalf of IRS then IRS will pay compensation to such person for his proved loss up to but not

13 Chapter 1 Part 1 Page 4 of 22 General exceeding the amount of the fee charged by IRS for that particular service, information or advice Any notice of claim for loss, damage or expense as referred to in shall be made in writing to IRS Head Office within six months of the date when the service, information or advice was first provided, failing which all the rights to any such claim shall be forfeited and IRS shall be relieved and discharged from all liabilities. 1.7 IACS QSCS audits The surveys required by the regulations, and conducted by IRS may be subject to Audit by IACS as per the requirements of Quality System Certification Scheme and for this purpose, IACS auditors are to be given the necessary access to the ship, shipyard or works when requested by IRS. 1.8 Access of Surveyor to ships, shipyards or works The Surveyors are to be given free access to ships classed with IRS as well as to shipyards, works, etc. so as to perform their duties, and are to receive adequate assistance for this purpose. 1.9 Requirements for service suppliers Firms providing following services on behalf of the Owner, the results of which are used by Surveyors in making decision affecting classification and/or affecting statutory certifications, are to be approved by IRS in accordance with the laid down procedures. a) Class services - Firms engaged in thickness measurements on ships - Firms engaged in tightness testing of hatches with ultrasonic equipment - Firms carrying out in-water survey of ships and mobile offshore units. - Firms engaged in the examination of bow, stern, side and inner doors. b) Statutory services - Firms engaged in surveys and maintenance of fire extinguishing equipment and systems - Firms engaged in service on inflatable liferafts, inflatable lifejackets, hydrostatic release units, etc. - Firms engaged in the servicing and testing of radio communication equipment - Firms engaged in inspection and testing of centralised gas welding and cutting equipment - Firms engaged in surveys and maintenance of self contained breathing apparatus - Firms engaged in the annual performance testing of voyage data recorder - Firms engaged in the surveys of low location lighting systems using photo luminescent materials - Firms engaged in sound pressure level measurements of public address and general alarm systems For statutory services, approvals done by the flag Administration itself or duly authorised organisations acting on behalf of the flag Administration or by other organisations that are acceptable to the flag Administration (e.g. other governments, etc.) may be accepted Responding to Port State Control When requested by Port State and upon concurrence by the vessel's owner/master IRS Surveyors would attend onboard a ship in order to assist in the rectification of reported deficiencies or other discrepancies that affect or may affect classification or the statutory certificates issued by IRS. The owner and the vessel's flag state will be notified of such attendance and survey. IRS Surveyors will also cooperate with Port States by providing inspectors with background information.

14 Rules and Regulations for the Construction and Classification of Steel Ships Page 5 of 22 Section 2 Classification Regulations 2.1 General When a ship is assigned a specific Character of Class by Indian Register of Shipping, it implies that IRS has been satisfied that the said ship meets, for this particular class, with these Rules and Regulations or requirements equivalent thereto for both hull and machinery. The ship will continue to be classed with IRS so long as she is found, upon examination at the prescribed annual and periodical surveys, to be maintained in a fit and efficient condition and in accordance with the Periodical Survey requirements of these Rules. Classification will be conditional upon compliance with IRS requirements for both hull and machinery The Rules are framed on the understanding that ships will be properly loaded and handled; they do not, unless stated in the class notation, provide for special distributions or concentrations of loading and that ships will not be operated in environmental conditions more severe than those agreed for design basis and approval Compliance with the following requirements, as applicable, is a pre-requisite of classification: - International Convention on Loadlines (ILLC), International Convention for the Safety of Life at Sea (SOLAS) and International Convention for the Prevention of Pollution from Ships (MARPOL) International Convention on the Control of Harmful Antifouling Systems on Ships (AFS Convention) International Bulk Chemical Code (IBC Code) or Bulk Chemical Code (BCH Code) International Gas Carrier Code (IGC Code) or Gas Carrier Code (GC Code) Fire Test Procedures Code (FTP Code) of the International Maritime Organization (IMO) - Related Resolutions of the IMO Assembly, the Maritime Safety Committee (MSC) and the Marine Environment Protection Committee (MEPC) of IMO. In addition, the Unified Interpretations of IACS (International Association of Classification Societies) related to the above IMO Conventions and Codes are also to be complied with unless the flag Administration has provided its own interpretation Where a vessel holds dual classification with IRS and the periodical survey requirements of the corresponding Society differ from those of the Rules of IRS, IRS may permit the requirements of the corresponding Society being applied, in so far as they are equivalent in purpose or are no less stringent than the IRS rule requirement The classification of a ship with IRS does not exempt the owners from compliance with any additional and/or more stringent requirements issued by the Administration of the state whose flag the ship is entitled to fly and provision for their application It is the responsibility of the Owners to ensure that the operating and maintenance instructions/manuals for the ship machinery equipment essential to the safe operation of the ship are available in a language understandable by those officers and crew members who are required to understand such information/ instructions in the performance of their duties. 2.2 Application of Rules Unless directed otherwise by IRS, no new Regulations or amendments to the Rules relating to the character of classification or class notation is to be applied to the existing vessels Unless directed otherwise by IRS, no new Rules and Regulations or amendments to the existing Rules & Regulations become applicable within 6 months after the date of issue. 2.3 Scope of classification Classification covers ship's hull, appendages and machinery including electrical systems to the extent as specified in these Rules & Regulations On application by Builder or Owner, certain installation, e.g. refrigerating machinery may be classed by IRS.

15 Chapter 1 Part 1 Page 6 of 22 General 2.4 Interpretations of the Rules The correct interpretation of the requirements contained in the Rules and other Regulations is the sole responsibility and at the sole discretion of IRS. 2.5 Definitions Clear water : Water having sufficient depth to permit the normal development of wind generated waves Fetch : The extent of clear water across which a wind has blown before reaching the ship Sheltered water : Water where the fetch is six nautical miles or less Reasonable weather : Reasonable weather is assumed to exclude winds exceeding Beaufort force six associated with sea states resulting in green water being frequently taken on board the ship's deck. However it is realised that this is largely a matter of judgment and good seamanship and can vary for particular ships Type notation : A notation indicating that the ship has been designed and constructed with applicable Rules to that type of ship, e.g. "Bulk Carrier", "Oil Tanker", etc Cargo notation : A notation indicating that the ship has been designed, modified or arranged to carry one or more particular cargoes, e.g. "Phosphoric Acid". Ships with one or more particular cargo notations are not thereby prevented from carrying other cargoes for which they are suitable Special feature notation : A notation indicating that the ship incorporates special features which significantly affect the design, e.g. "movable decks" Service restriction notation : A notation indicating that a ship has been classed on the understanding that it will be operated only in suitable areas or conditions which have been agreed to by IRS e.g. "Sheltered Water Service". 2.6 Character of classification The following Characters and symbols are assigned by IRS to indicate classification of Steel Ships. (For explanation of abbreviations, see Appendix I) Character SUL assigned to sea-going vessels indicates that the ship, its machinery and equipment (i.e. anchors, chain cable and hawsers) meet the Rule requirements for assignment of this Character of Class Character SU- assigned to sea-going vessels indicates that the ship and its machinery meet the Rule requirements but equipment of ship is not supplied or maintained as per the relevant Rules but is considered by IRS to be acceptable for particular service Character SU assigned to sea-going vessels indicates that the ship and its machinery meet the Rule requirements but where special consideration has been given for reason of particular purpose of service and normal equipment may be unnecessary. In such cases letter 'L' is omitted from the Character SUL The distinguishing mark inserted before Characters of Class or Class Notation(s) is assigned to new ships constructed under special survey of IRS in compliance with the Rules to the satisfaction of IRS. 2.7 Class notations - Hull When requested by an Owner and agreed to by IRS or when considered necessary by IRS, a class notation will be appended to the character of classification. This class notation will consist of one of, or a combination of - a type notation, a cargo notation, a special duties notation, a special features notation and/or a service restriction notation, e.g. SUL CHEMICAL TANKER, "Sulphuric Acid", ESP, "Indian Coastal Service" Details of the ship types and additional class notations are given in Appendix 1 and applicable Chapters in Pt.5 of the Rules Service restriction notation will generally be assigned in one of the forms given below, but this does not preclude the Owners or Shipbuilders from requesting special consideration for other forms of restrictions. a) Sheltered Water Service : Service in sheltered water adjacent to sand banks, reefs, breakwaters or other coastal features, and in sheltered water between islands. The geographical limits will form part of the Class Notation. b) Restricted Water Service : Service in sheltered waters and also for short

16 Rules and Regulations for the Construction and Classification of Steel Ships Page 7 of 22 distances (generally less than 15 nautical miles) beyond sheltered waters in 'reasonable weather'. The geographical limits will form part of the Class Notation. c) Specified Coastal Service : Service along a coast, during the course of which the vessel does not go more than 20 nautical miles from the nearest land and may cross gulfs or similar features recognised by the local Administration as a part of the coastal service. The geographical limits will form part of the Class Notation, e.g. "Indian Coastal Service". d) Specified Route Service : Service between two or more points or other geographical features which will form part of the Class Notation. e) Specified Operating Area Service : Service within one or more geographical area(s) which will form part of the Class Notation. 2.8 Class notations - Machinery The class notations that may be assigned by IRS are given in Appendix 1. IRS may prescribe additional notations as found necessary/ expedient from time to time. 2.9 Materials The materials used in the construction of hull and machinery intended for classification, or in the repair of ships already classed, are to be of good quality and free from defects and are to be tested in accordance with the relevant Rules. The steel is to be manufactured by an approved process at works recognized* by IRS. Alternatively, tests to the satisfaction of IRS will be required to demonstrate the suitability of the steel. * Consideration may be given by IRS at their sole discretion to recognize the works on the approved list of Classification Societies with whom IRS currently has Dual Class Agreements for this purpose. Such approval of works is intended for limited periods only and may call for such tests and/or examination to be carried out by the Surveyors of IRS as may be decided from time to time Request for surveys It is the responsibility of the Builders or Owners, as applicable, to inform the Surveyors of IRS in the port at which the surveys for supervision during new construction or ships in service are to be undertaken and to ensure that all surveys for issue of class certificate for new construction, and maintenance of class for ships in service are carried out Repairs Any repairs to the hull, machinery and equipment either as a result of damage or wear and tear which are required for the maintenance of ship's class are to be carried out under the inspection of and to the satisfaction of the Surveyors Where a vessel is damaged to an extent resulting in towage outside port limits, it shall be the Owners' responsibility to notify IRS at the first practicable opportunity Where such repairs are effected at a port where there is no Surveyor of IRS, the ship is to be surveyed by one of its Surveyors at the earliest opportunity Where repairs to hull, machinery or equipment, which affect or may affect classification, are to be carried out by a riding crew, they are to be planned in advance. A complete repair procedure including the extent of proposed repairs and the need for Surveyor's attendance during the voyage is to be submitted to and agreed upon by the Surveyor reasonably in advance. Failure to notify IRS, in advance of the repairs, may result in suspension of the vessel's class. Where in any emergency circumstance, emergency repairs are to be effected immediately, the repairs should be documented in the ship s log and submitted thereafter to IRS for use in determining further survey requirements Alterations Any alterations proposed to be carried out to approved scantlings and arrangements of the hull, machinery or equipment are to meet with the approval of IRS and for this purpose plans and technical particulars are to be submitted for approval in advance. Such approved alterations are to be carried out under the inspection of, and to the satisfaction of, the Surveyors Classification of new constructions The request for classification of new constructions is to be submitted to IRS by the shipyard or shipowner in the form provided by

17 Chapter 1 Part 1 Page 8 of 22 General IRS. The request is to include complete details regarding class notation and statutory certificates required, where applicable. The IRS Rules in force on the date of contract for construction of the vessel (See 2.14) will be applicable for classification, in general. However, statutory requirements coming into force after the date of contract for construction may have to be complied with if they become applicable based on any other criteria such as the date on which vessel is constructed (keel laid) Where orders for major machinery and equipment are placed on manufacturer or suppliers, IRS will have to be informed. Responsibility for compliance with IRS Rules and Regulations shall be with the manufacturers/suppliers. Where relevant, the date of application for certification of specific major machinery will also be considered in addition to the date of contract for construction of the vessel, for determining the applicable rules for such machinery Plans and particulars as specified in the Rules will have to be submitted to IRS in triplicate sufficiently in advance of commencement of construction. One copy with stamp of approval will be returned. Any deviation from approved drawings will require to be approved by IRS prior to execution of work. IRS reserves the right to request for additional plans, information or particulars to be submitted. Where it is proposed to use existing previously approved plans for a new contract, written application is to be made to IRS. Approval of plans and calculations by IRS does not relieve the Builders of their responsibility for the design, construction and installation of the various parts, nor does it absolve the Builders from their duty of carrying out any alterations or additions to the various parts on board deemed necessary by IRS during construction or installation on board or trials IRS will assess the production facilities and procedures of the shipyard and other manufacturers as to whether they meet the requirements of the construction Rules. Review of the construction facilities prior to any steel work or construction shall be carried out under the following circumstances: a) Where IRS has none or no recent experience of the construction facilities typically after a one year lapse or when significant new infrastructure has been added. b) Where there has been a significant management or personnel re-structuring having an impact on the ship construction process, or c) Where the shipbuilder contracts to construct a vessel of a different type or substantially different in design During construction of a vessel, IRS will ensure by surveys that parts of hull and machinery requiring approval have been constructed in compliance with approved drawings, all required tests and trials are performed satisfactorily, workmanship is in compliance with current engineering practices and welded parts are produced by qualified welders All hull, machinery and electrical installations will be subjected to operational trials in the presence of IRS Surveyor On completion of the ship copies of as fitted plans showing the ship as built, essential certificates and records, loading manual etc. are to be submitted by the Builder generally prior to issuance of the Interim Certificate of Class For each new construction the shipbuilder is required to prepare and deliver a ship construction file containing documents / plans / manuals etc. for facilitating the future inspection of survey, repair and maintenance as detailed in Pt.3, Ch.1, Sec.3. Some of these documents may be directly supplied by other parties e.g. shipowner, for inclusion in the ship construction file. The ship construction file is to be maintained onboard each ship Date of contract for construction The date of contract for construction of a vessel is the date on which the contract to build the vessel is signed between the prospective owner and the shipbuilder. This date and the construction numbers (i.e. hull numbers) of all the vessels included in the contract are to be declared to IRS by the party applying for the assignment of class to a new building The date of contract for construction of a series of vessels, including specified optional vessels for which the option is ultimately exercised, is the date on which the contract to

18 Rules and Regulations for the Construction and Classification of Steel Ships Page 9 of 22 build the series is signed between the prospective owner and the shipbuilder. For the purpose of this requirement, vessels built under a single contract for construction are considered a series of vessels if they are built to the same approved plans for classification purposes. However, vessels within a series may have design alterations from the original design provided: a) Such alterations do not affect matters related to classification, or b) If the alterations are subject to classification requirements, these alterations are to comply with the classification requirements in effect on the date on which the alterations are contracted between the prospective owner and the shipbuilder or, in the absence of the alteration contract, comply with the classification requirements in effect on the date on which the alterations are submitted to IRS for approval. The optional vessels will be considered part of the same series of vessels if the option is exercised not later than 1 year after the contract to build the series was signed If a contract for construction is later amended to include additional vessels or additional options, the date of contract for construction for such vessels is the date on which the amendment to the contract, is signed between the prospective owner and the shipbuilder. The amendment to the contract is to be considered as a new contract to which and above apply If a contract for construction is amended to change the ship type, the date of contract for construction of this modified vessel, or vessels, is the date on which revised contract or new contract is signed between the Owner, or Owners, and the shipbuilder Date of build The date of completion of the special survey inspection will normally be taken as the date of build to be entered in the Register Book. Where there is a substantial delay between completion of construction survey and the ship commencing service, the date of commissioning may be specified on the classification certificate. When modifications are carried out on a ship, the initial date of build remains assigned to the ship When a complete replacement or addition of a major portion of the ship (e.g. fwd.section, midship section or aft section) is involved, the following applies: - Date of build assigned to each portion of the ship will be indicated on the classification certificate, and the date of modification will be indicated in the Register Book. - Survey requirements shall be based on the date of build associated with each major portion of the ship Appeal from Surveyors' recommendations If the recommendations of the Surveyors are considered in any case to be unnecessary or unreasonable, appeal may be made to IRS, who may direct a special examination to be held Certificates Certificates of Class will be issued to Builders or Owners when the required reports on completion of Special Surveys of new ships or of existing ships submitted for classification have been received from the Surveyors and approved by IRS Certificates of class maintenance in respect of completed periodical special surveys of hull and machinery will also be issued to Owners The Surveyors are permitted to issue Interim Certificates to enable a ship, classed with IRS, to proceed on her voyage provided that, in their opinion, she is in a fit and efficient condition. Such Certificates will contain Surveyors' recommendations for continuance of Class, but in all cases are subject to confirmation by IRS Individual Certificates can also be issued for propelling machinery, boilers, equipments and fittings which have been manufactured under IRS Survey and in accordance with these Regulations.

19 Chapter 1 Part 1 Page 10 of 22 General 2.18 Suspension, withdrawal and deletion of class Suspension The class of a vessel will be automatically suspended from the expiry date of the Certificate of Class if the special survey has not been completed by the due date and an extension (See Ch.2, 1.11) has not been agreed to, or the vessel is not under attendance by the Surveyor with a view to complete the surveys prior to resuming service The class of a vessel will also be automatically suspended if the annual, intermediate survey become overdue. (See Pt.1 Ch.2, Table for due dates and window period) When the surveys relating to specific additional notations of hull or equipment or machinery have not been complied with and thereby the ship is not entitled to retain that notation, then the specific notation will be suspended till the related surveys are completed The class of a vessel will be subject to a suspension procedure if an item of continuous survey is overdue at the time of annual survey, unless the item is dealt with or postponed by agreement The class of the vessel will also be subject to a suspension procedure if recommendations and/or conditions of class are not dealt with by the due date or postponed by agreement, by the due date The class of a ship is liable to be withheld or, if already granted, may be withdrawn in case of any non-payment of fees or expenses chargeable for the service rendered Where any ship proceeds to sea with less freeboard than that approved by IRS or when the freeboard marks are placed higher on the ship's sides than the position assigned or approved by IRS, the ship's class will be suspended When it is found that a ship is being operated in a manner contrary to that agreed at the time of classification, or is being operated in conditions or in areas more onerous than those agreed, the class will be suspended The class of a vessel will be liable to be suspended if the Owner fails to notify IRS of any damage to the ship s hull, machinery or equipment, which may adversely affect classification of the vessel or subsequently fails to arrange for the survey as may be advised by IRS The class of a vessel will be suspended after a major casualty to the ship, such as grounding, sinking or breaking up, if the Owner is unable to arrange for the ship s survey by IRS and commence repairs within a reasonable period of the occurrence of the casualty, unless otherwise agreed to with IRS Vessels laid up in accordance with the Rules prior to surveys becoming overdue will not be suspended when surveys addressed above become overdue When a vessel is intended for a demolition voyage with any periodical survey overdue, the vessel s class will not be suspended till completion of a single direct ballast voyage from the lay up or final discharge port to the demolition yard Ships which are laid up after being suspended as a result of surveys becoming overdue, will remain suspended until the overdue surveys are completed Classification will be reinstated upon satisfactory completion of overdue survey. Such surveys will be credited from the date originally due. However, the vessel will remain disclassed from the date of suspension until the date class is reinstated The Owners and the Flag State, where applicable, would be informed in writing, of the suspension and reinstatement of Classification Withdrawal Ship s class will be withdrawn, at the end of six months of suspension, if the Owner has not commenced any action to reinstate the ship s class. A longer suspension period may be granted when the vessel is not trading or in cases of lay-up awaiting attendance for reinstatement or disposition, in the event of a casualty When the class of a ship holding IRS class, is withdrawn by IRS in consequence of a request from the Owners, the notation "Class withdrawn at Owners' request" (with date) will be made in the subsequent reprints of the Register

20 Rules and Regulations for the Construction and Classification of Steel Ships Page 11 of 22 Of Ships. This entry will continue till the ship s class is reinstated or deleted When the Regulations as regards surveys on the hull or equipment or machinery have not been complied with and the ship thereby is not entitled to retain her class, the class will be withdrawn and the notation "Class withdrawn" (with date) will be made in the subsequent reprints of the Register Of Ships. This entry will continue till the ship s class is reinstated or deleted The withdrawal of a vessel will be confirmed in writing to the Owner and the Flag State, where applicable Deletion of Class A ship will be considered to cease to exist when it is destroyed by scrapping or by sinking to unsalvageable depths or abandoned by the owner A ship can also be considered to cease to exist when it is broken up either by grounding or due to structural failure or due to actions of war or sabotage Ship s class will be deleted when it ceases to exist Reclassification of ships When Owners request for reclassification of a ship for which the class previously assigned has been withdrawn, IRS will require a Special Survey for Reclassification to be held by the Surveyors. The extent of the survey will depend upon the age of the ship and the circumstances of each case If the ship is found or placed in good and efficient condition in accordance with the requirements of the Rules and Regulations at the Special Survey for Reclassification, IRS may decide to reinstate her original class or assign such other class as considered appropriate The date of reclassification will appear in the supplement to the Register Of Ships and the subsequent issue of Register Of Ships Condition improvement program The Condition Improvement Program (CIP) of IRS classed ships is aimed at improving fleet quality and safety and reducing the risk of Port State Control detentions. Under this program vessels requiring special attention are identified based on multiple risk criteria and study of the recent history of the vessel such as survey status, conditions of class, recommendations, detentions etc. and the shipowner so informed Vessels identified for condition improvement would be subject to additional surveys over and above the normal classification surveys. Surveyors are to be given necessary access to the ship for the purpose of identification of deficiencies and recommendation of repairs. Deficiencies requiring immediate attention as indicated by the Surveyor are to be repaired promptly and thoroughly. Section 3 Classification of Ships not Built under the Survey of 3.1 General procedure for classification of ships not built under survey of IRS Plans of hull and machinery in duplicate, together with torsional vibration calculations, where applicable, as specified in are to be submitted for approval. It is preferable to have the plans approved before the classification survey is commenced Full special classification surveys would require to be carried out by IRS Surveyors in order to satisfy themselves regarding the workmanship and condition of the ship and to verify the approved scantlings and arrangements. The scope of these surveys may, however, be modified in the case of vessels built under the Special Survey and holding valid certificates of class of established classification societies or equivalent, if prior to commencement of survey by IRS, documentary evidence of all hull and machinery classification surveys held by the other society subsequent to last special survey carried out by them could be produced. In such cases, a special survey notation will not be assigned in conjunction with