July+2010+%2D+Rules+for+Classification+of+Ships

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Contents:
New chapters
Deleted chapters
Revised chapters
Revised but not reprinted chapters

New chapters
The following rule chapters are new as of July 2010:

Pt.5 Ch.16 Diving Support Vessels and Diving Systems
General
The executive committee approved this new chapter in June 2010.
The rules come into force on 1 July 2010.

Pt.6 Ch.26 Dynamic Positioning System - Enhanced Reliability DYNPOS-ER
General
The executive committee approved this new chapter in June 2010.
The rules come into force on 1 July 2010.

Pt.6 Ch.27 Recycling
General
The executive committee approved this new chapter in June 2010.
The rules come into force on 1 July 2010.

Deleted chapters
The following rule chapter are deleted as of July 2010:

Pt.6 Ch.21 Dynamic Positioning Systems - Class Entry Options

Revised chapters
The following rule chapters have been revised as of July 2010:

Pt.0 Ch.3 Plan Approval Documentation Types – Definitions
Main changes coming into force 1 July 2010:

  • Sec.2 Documentation Types
    • New item I260 – Control and monitoring systems - periodical test procedure
    • New documentation types have been added as follows:
      • M085 – Hazardous materials documentation - appendix 2 substances
      • M100 – Material declaration
      • M110 – Declaration of conformity relating to use of hazardous materials
      • M120 – Hazardous materials location plan.
        In addition documentation types M081, M083 and M084 have been amended.

Main changes coming into force 1 January 2011:

  • Sec.2 Documentation Types
    • B200: Document type definition of Freeboard Plan is updated.
    • H190: Container stowage and securing manual is amended.

Pt.1 Ch.1 General Regulations
Main changes coming into force 1 July 2010

  • Sec.2 Assignment of Class
    • The first paragraph in item A502 regarding “survey carried out at the discretion of the Society” has been deleted.
  • Sec.3 Retention of Class
    • Item A104 has been updated with a reference to the new rule chapter Pt.5 Ch.16 “Diving Support Vessels and Diving Systems”.
    • Item B203 has been amended to clearly state that the requirement concerns more than one survey.

Main changes coming into force 1 January 2011:

  • Sec.1 Classification Principles
    • A new item B505 regarding the right to refuse or withdraw -classification has been added.
    • In sub-section D the text has been made more precise on what is actually the DNV task undertaking a statutory certification.

Pt.1 Ch.2 Class Notations
Main changes coming into force 1 July 2010:

  • Sec.1 Class Notations
    • Table C1 is updated due to introduction of new class notations: Great Lakes Bulk Carrier, Offshore Service Vessel, Anchor Handling, Towing and AHTS. New reference for survey requirements for notation Tug is also made.
    • In Table C3 a new qualifier “(for max draught x.x m)” has been added for the class notation ICE.
    • Table C5:
      • class notation BWM-TP is deleted
      • class notation DSV-BOUNCE is deleted, and as classification of diving systems is reintroduced, new notations Diving system-SURFACE and Diving system-SAT are added.
      • new notations: Fire Fighter I+, DPS 0, DPS 1, DPS 2, DPS 3, DYNPOS-ER and Recyclable are added.
        In addition, the “Description” for Fire Fighter I and the DYNPOS- qualifiers has been amended.
      • the Emergency propulsion notation (respectively EP-1(a%)(+), EP-2(a%)(+) and EP-3(a%)(+)) has been changed to Alternative Propulsion (respectively AP 1(a%)(+), AP-2(a%)(+) and AP-3(a%)(+)).
    • Table C6 is corrected. (S) is taken out of the table, as this is a “qualifier” related to Standby Vessel and not a notation.
  • Sec.2 Historical Class Notations
    • The title of Sub-section A and Table D1 (corrected to A1) has been amended to read: “Class Notations no longer used for newbuildings”.
    • In Table A1 “Class Notations no longer used for newbuildings”, the following class notations have been added:
      • BWM-TP
      • DSV-BOUNCE
      • Supply Vessel, Supply Vessel Basic
      • POS CLE-0(...), POS CLE-1(...), POS CLE-2(...) and POS CLE-3(...)
      • EP-1(a%)(+), EP-2(a%)(+) and EP-3(a%)(+).

Main changes coming into force 1 January 2011:

  • Sec.1 Class Notations
    • In Table B4 a new class notation “Semi-Submersible Heavy Transport Vessel” has been added.

Pt. 2 Ch.3 Fabrication and Testing of Structures
Main Changes coming into force 1 January 2011:

  • Sec.5 Welding Procedures
    • Updating on qualification of welding procedures in order to be in accordance with IACS UR W28.
  • Sec.8 Structural and Tightness Testing
    • References to SOLAS in Table B1 are replaced with text from IACS “Draft Guidelines for Procedures of Testing Tanks and Tight Boundaries”.

Pt.3 Ch.1 Hull Structural Design - Ships with Length 100 Metres and Above
Main changes coming into force 1 July 2010:

  • Sec.7 Side Structures
    • In item E104, the factor kal applied to the plate thickness requirement taking into account cylindrical and conical bow shape is changed, avoiding a rapid shift if the stiffener spacing is over a given fraction of the radius. The maximum value is reduced from 1.22 to 1.16.
    • In item E113, a Guidance Note is introduced.
  • Sec.15 Special Requirements - Additional Class
    • In Table F1, “AP(final = ACO)” has been deleted (two occurrences)
    • Item F302 has been amended.

Main changes coming into force 1 January 2011:

  • Sec.1 General Requirements
    • In items B216 and B217 new definitions for the terms Supporting structure and Foundation have been added.
  • Sec.4 Design Loads
    • In item C403, minimum value for K has been inserted.
  • Sec.6 Bottom Structures
    • In items G302 and G303, requirements to stiffeners on floors in aft peak have been updated.
  • Sec.12 Direct Strength Calculations
    • In item B311, minimum value for K has been inserted.

Pt.3 Ch.3 Hull Equipment and Safety
Main changes coming into force 1 July 2010:

  • Sec.6 Openings and Closing Appliances
    • The whole section has been updated to align with the latest amendment of the International Convention on Load Lines (ICLL).
    • P201 and 205: Bolt dimensions requirements were missing. The bolt and the watertight integrity of the connection is not covered by the certification of the box cooler itself.
  • Sec.8 Protection of the crew
    • A101: Amended to align with ICLL Reg. 25 (2)
    • A102: Amended to align with ICLL Reg. 25 (3)
    • A104: Amended to align with IACS UI LL47
    • A105: Added to include a reference to the scantlings DNV expect for the stanchions and rails of the guard rail
    • A202: Amended to align with ICLL Reg. 25-1.
  • Sec.9 Stability
    • D201: IMO weather criterion is made mandatory for all ships
    • Table D1: class notation DSV-BOUNCE has been deleted and for class notation DSV-SURFACE, -SAT a reference to the new rule chapter Pt.5 Ch.16 “Diving Support Vessels and Diving Systems” has been given.
    • F201: "Yard's checklist for planning and execution of lightweight survey and inclining test" is introduced
    • General update of references to new IMO requirements.

Pt.4 Ch.1 Machinery Systems, General
Main changes adopted July 2010:

Coming into force 1 July 2010:

  • Sec.3 Design Principles
    • A new item A604 concerning ballast water treatment system installations has been added.

Pt.4 Ch.6 Piping Systems
Main changes adopted July 2010:

Coming into force 1 July 2010:

  • Sec.4 Ship Piping Systems
    • A new sub-section I300 concerning ballast water treatment system has been added.

Pt.4 Ch.9 Control and Monitoring Systems
Main changes coming into force 1 January 2011:

  • Sec.1 General Requirements
    • Table C2, C3, C4: Clarification of certain documentation requirements, especially related to E0 and also functional failure analysis).
    • D504: Specification of sea-trial test requirements for remote control of propulsion machinery, as part of main class.
  • Sec.2 Design Principles
    • A205: Requirement for instrument accuracy added.
    • B202: Requirement for system response to failure in redundant systems added.
  • Sec.3 System Design
    • A103: Clarification of the requirement for independency between control systems and safety systems.
    • A205: Requirement for independent indication in closed loops added (the requirement was unintentionally removed some years ago).
  • Sec.5 Component Design and Installation
    • C301: Relaxation of requirement for IP degree (ingress protection) for equipment in control room / wheelhouse / accommodation

Pt.5 Ch.1 Ships for Navigation in Ice
Main changes coming into force 1 July 2010:

  • Sec.1 General Requirements
    • A201 Table A1 : the qualifier (for max draught x.x m) is introduced as a class notation.
    • D102 is amended to ensure correct implementation of the Finish-Swedish Ice Class Rules (FSICR).

Main changes coming into force 1 January 2011:

  • Sec.8 Polar Class
    This section is amended to implement UR I3 Rev.2, Polar Class – Machinery and harmonize the machinery rules with the structural rules:
    • Design loads for propulsion line (I600), design principles (J100), blade design (J200) have all been considerably changed.
    • The subsections: Fatigue design (J300), CP-mechanism (J400), shafts and components (J500), azimuthing main propulsion (J600) and Steering Systems (J700) have all been amended with detailed requirements replacing the phrase "to be evaluated according to DNV's current rule practice".

Pt.5 Ch.2 Passenger and Dry Cargo Ships
Main changes coming into force 1 July 2010:

  • Sec.5 Dry Bulk Cargo Carriers
    • A301: New paragraph which has been introduced to make single pass loading a mandatory requirement for Ore carriers above 200.000 DWT.
  • Sec.11 Great lakes bulk carriers
    • New section including newbuilding rules for the construction of 'Bulk carriers' purpose-built for navigation on the Great Lakes and the St. Lawrence waterway systems. The Rules are covering requirements to hull structural strength and closing appliances.

Main changes coming into force 1 January 2011:

  • Sec.6 Container Carriers
    • A500: The documentation requirements are formulated in accordance with the template for documentation requirements in accordance with DNV Rules.
    • A700: Requirements to certification of lashing computer systems are deleted with a link to Classification Note 32.2 Appendix A for procedures for certification of lashing computer systems.
    • B201: An opening to define the Stillwater shear forces, Qs, based on the envelope curve representing all relevant full- and part load cargo- and ballast conditions is included.
    • B202-208: A global ULS hull girder hogging bending moment criterion has been introduced for container ships in the Rules.
    • B404: Buckling requirements to wave breaker is more detailed described and updated in line with the probability level applied for the yield acceptance criteria.
    • C310: The connection area requirements for longitudinals are no longer regarded as "Tentative Rules". In addition, it is now clearly described that the requirements are now to be based on net scantlings.

Pt.5 Ch.7 Tugs, Supply Vessels and other Offshore/Harbour Vessels
Main changes coming into force 1 July 2010:

  • General update of references due to new IMO Code for Special Purpose Ships (SPS).
  • Sec.1 Introduction has been revised as follows:
    • Table A1 with class notations has been completely revised.
    • Item A104 has been introduced specifying prerequisites for the Anchor Handling, Towing, Supply and AHTS notation.
  • Sec.2 Offshore Service Vessels has been completely revised as follows:
    • Scope and objectives for offshore service vessels have been introduced.
    • Documentation requirements in Table A1 have been revised and moved to Sec.3, Sec.5 and Sec.12 depending of their respective purpose.
    • Table A2 has been moved to Sec.5 A.
    • A300 Towing Arrangement requirement has been moved to Sec.12 A.
    • B105 has been moved to Sec.3 B.
    • B205 has been moved to Sec.2 E.
    • B208 has been moved to Sec.3 B.
    • B301, 302 and 303 has been moved to Sec.2 E.
    • The whole subsection C has been moved to Sec.4.
    • D300 covering intact stability requirements have been completely revised.
    • Subsection E is covering the new Offshore Service Vessel+ notation for enhanced strength.
    • E401 has been revised and is now found under E601.
    • Fig.3 in subsection E has been revised.
  • Sec.3 Offshore Service Vessels for Anchor Handling and Towing
    The section is new covering vessels built for towing of floating objects in open waters and objects on sea bed in addition to subsurface deployment and lifting of anchoring equipment.
  • Sec.4 Offshore Service Vessels for Platform Supply
    The section is new covering the requirements to cargo handling arrangements for platform supply vessels.
  • Sec.7 Fire Fighters has been completely revised as follows:
    • Class notation Fire Fighter I has been changed and aligned with the market standard with respect to the exclusion of class A-0 windows requirements and a shorter length and height of the monitor throw. However, our originally additional requirements to pumps and piping, hydrant manifolds, hose connections and nozzles including testing still remains as a basis for all Fire Fighter class notations.
    • New Fire Fighter + is replacing the old Fire Fighter I encompassing both active and passive protection.
  • Sec.11 Special Purpose Ships
    • A new Guidance note is introduced in A103 in order to clarify how many persons the initial approval was done for in case of a future upgrading of a vessel.
    • New A106 item to make it clear that for flags which have not accepted the use of the SPS Code, the requirements in the SPS Code cannot prevail SOLAS requirements as a cargo ship.
  • Sec.12 Tugs has been completely revised as follows:
    • Scope and objectives for tug vessels have been introduced.
    • Documentation requirements in Table A2 have been revised.
    • A500 is covering testing requirements to equipment.
    • A500 (previous D400) is covering the bollard pull testing and parts of the content has been revised. Fig.1 has been deleted.
    • B101 scantling draught has been changed to 0.85D.
    • D300 (previous A300), the text has been partly revised.
    • Subsection D has been completely revised.
    • Subsection E covering stability has been completely revised.
  • Sec.17 Crane vessels
    • C101 has been amended to include an option to follow other recognized standard.

Main changes coming into force 1 January 2011:

  • Sec.21 Semi-Submersible Heavy Transport Vessels: new section
    • The new rules cover intact and damage stability and floatability in submerged and transit conditions, as well as load line requirements related to reserve freeboard and buoyancy, and watertight arrangements.
    • The new rules also address the issue of applying for an exemption from the Load Line convention due to submersion of the freeboard deck. Furthermore, the rules cover ship type-specific items related to structural strength, fire safety, lifesaving appliances and nautical safety.

Pt.5 Ch.11 Carriage of Dangerous Goods
Main changes coming into force on 1 July 2010:

  • Sec. 1 General Requirements
    • The BC Code (Code of Safe Practice for Solid Bulk Cargoes) name change to the IMSBC Code (International Maritime Solid Bulk Cargoes Code). This has been corrected wherever it's found necessary.
    • C100: Some orthographical discrepancies corrected.
  • Sec. 2 Requirements for carriage of dangerous goods in various types of cargo spaces
    • B305: Requirements for electrical equipment in extended hazardous areas second item has been changed to: - be suitable for zone 2, see Pt.4 Ch.8 Sec.11 C200.
    • B401: Has been amended where reference is now given to requirements in DNV Statutory Interpretations.
    • B703: Renamed as a “Guidance note” for medical oxygen.
    • B1104: Valid for ammonium nitrates only. Neither top wing tanks, deep tanks nor side tanks intended for oil are allowed adjacent to cargo holds intended for ammonium nitrates.
    • B1105: Changed to include all type of oil tanks adjacent to cargo holds.
    • Table D1: New entry: Direct reduced iron (C) (by-product, fines) added.
    • General: References to SOLAS Requirements, etc. made consistent throughout the section.

Pt.6 Ch.1 Miscellaneous Notations
Main changes coming into force 1 July 2010:

General

  • Sec.4 Diving Systems, has been deleted in its entirety and remaining sections have been renumbered accordingly. The elaborated requirement text has been placed in the new rule chapter Pt.5 Ch.16 Diving Support Vessels and Diving Systems, Sec.1 through 9.
  • Sec.1 General Requirements
    • As a consequent of the deletion of Sec.4, class notation DSV- has been deleted from Table A1.
  • Sec.3 Cranes
    • The title of the section has been renamed from “Shipboard Cranes” to “Cranes” because this chapter regards also offshore cranes.

Pt.6 Ch.3 Periodically Unattended Machinery Space
Main changes coming into force 1 January 2011:

  • Sec.1 General Requirements
    • Documentation requirements are clarified and standardized (-Table C1, C2), and aligned with the document types defined in Pt.0 Ch.3.
  • Sec.3 Class Notation E0
    • New requirements for monitoring of common rail engines as specified in IACS UR M35 and 36 (Table A1, A5).
    • Removed requirements for automatic starting of stand-by generator and auxiliaries as these requirements are given in main class Pt.4 Ch.8 (Sec.3 E102).
  • Sec.5 Survey
    • Specification / generalization of required tests of remote control systems, applicable for all kinds of propulsion systems (B103, B104). The requirements for testing of remote control systems have been amended and slightly rearranged. The general test requirement has been made mandatory also for main class as the paragraphs are referred to from Pt.4 Ch.9.

Pt.6 Ch.7 Dynamic Positioning Systems
Main changes coming into force 1 July 2010:

General

  • DPS- series notations: New notation series notations based on the principles in IMO MSC/Circ. 645 “Guidelines for vessels with dynamic positioning systems”.
  • Pt.6 Ch.21 Existing POS-CLE notations deleted, existing vessels assigned corresponding DPS- series notations.

Pt.6 Ch.8 Nautical Safety
Main changes coming into force 1 January 2011:

  • Sec.1 General
    • the introduction has been reduced and the scope of the class notations has been clarified
    • an opening for waiver for “non-world-wide-traders” is included.
  • Sec.2 Design of Workplace
    • the requirements for vertical field-of-vision outside the SOLAS-sector dead ahead has been clarified
    • the requirements for vertical field-of-vision from docking WS on NAUT-AW has been enhanced
    • the requirements for configuration of wind deflectors and bridge wing bulwark height has been clarified
    • the requirements for equipment arrangement of the navigation and manoeuvring workstations has been revised (no chart table) and strengthened.
  • Sec.3 Workplace Environment
    • the requirements for working environment have been revised and enhanced in accordance with prevailing ergonomic philosophy.
  • Sec.4 Bridge Equipment - Carriage Requirements
    • enhanced carriage requirements including dual ECDIS, weather information system, personnel surveillance system and alarm management system.
  • Sec.5 Bridge Equipment - General Requirements
    • relevant parts of existing section 7 concerning human-machine interfaces (HMI) have been relocated to this section.
    • general requirements for interface and network have been included.
    • power supplies have been revised in accordance with IACS.
    • sub-section E was outdated and has been replaced with a few general requirements about software.
  • Sec.6 Bridge Equipment - Specific Requirements
    • This section is re-written to take in both technological changes and additional equipment required by the rule revision and encompasses only additional requirements aiming towards the installation an integration of bridge equipment being distinctive for the two NAUT-class notations.
  • Sec.7 Network Based Integration of Navigation Systems (ICS)
    • This section is new, setting the requirements for the qualifier (ICS) applicable for integration of navigational equipment employing network platforms.
  • Sec.8 Ship Manoeuvring Characteristics
    • The revision is putting more weight on IMO Res.137(76), recognising that modelling of ship performance is improved in recent years (mainly due to DGPS and the provision of more true feedback data from full-scale trials) the rules is also accepting such modelling as a substitute of full-scale trials to a larger extent than before.
    • Additionally the revised rules put forward a minimum requirement for the ship’s course stability in line with the recommendation of the IMO sub-committee on Ship design and to be coherent with the track control system requirements.
  • Sec.9 Qualifications and Operational Procedures
    • The status of this section is made informative only in anticipation of a larger project determining what to do with the former class quotation: qualifier Q.
  • Sec.10 Bridge Equipment - On-board Tests
    • Some technical aspects of carrying out testing have been updated to recognize modern technology. Additionally the new equipment required is included.

Pt.6 Ch.13 Gas Fuelled Engine Installations
Main changes coming into force 1 July 2010:

  • General
    • Interim Guidelines on Safety for Natural Gas-fuelled Engine Installations in Ships have been approved by IMO MSC.285(86) in June 2009. The Rules are aligned with these guidelines.
  • Sec.1 General Requirements
    • A documentation requirement for an overall design philosophy is added.
    • Documentation requirements changed to new format.
    • Some definitions updated in line with Interim Guidelines, changes later in document or general improvement.
    • The product certification requirements for valves are updated to be stricter and in line with Rules for Classification of Ships, Pt.5 Ch.5 for low temperature gas or high pressure gas.
  • Sec.2 Materials
    • Some material requirements are updated to better accommodate materials for CNG tanks, and to make the requirements less strict for low pressure and piping with working temperature above zero.
  • Sec.3 Arrangement and System Design
    • The requirements with regard to entrance to and location of compressor rooms are changed to be in line with Interim Guidelines. Compressor rooms can now be accepted below open deck if arranged as tank rooms, and with entrance directly from open deck or through air locks.
    • D100 General has got new content, and now contains a new requirement to give a better overall control with the design of redundant fuel supply and machinery installations due to shut down actions after gas leakages. The previous D100 General is moved to D200 and renamed Engine room configuration options.
    • A new subsection “E Gas Supply System General” is added, collecting requirements from Sec.3 and Sec.6 regarding fuel supply system arrangement.
    • The requirement for excess flow shut down in Sec.6 D is re-written for better clarity and to make the different alternative solutions clearer, and moved to Sec.3 together with the rest of D101 to D106.
    • The design requirement for pipe duct is slightly revised to allow for an alternative calculation method for design pressure.
    • New requirements for emptying, inerting and gas freeing of gas tanks added in line with Interim Guidelines.
    • The wording for location of tanks is changed from “above” and “below deck” to “on open deck” and “in enclosed spaces”.
    • The requirement for location of tanks on open deck away from ship side is updated to be in line with the requirements for tanks located in enclosed spaces, hence opening for a location closer to the ship side for some ship types. Left out by mistake in previous revisions.
    • The requirements for location of CNG tanks and other gas tanks with pressure above 10 bar in enclosed spaces are updated in line with the Interim Guidelines. Now CNG can be located in enclosed spaces on certain conditions outlined in the rules.
    • The tank room arrangement requirement is slightly updated better accommodate the arrangement with a tank room arranged as a “cold box” welded to the outer shell of a double tank. In line with Interim Guidelines.
    • The bunkering station requirements are updated to better include CNG systems in addition to LNG systems, in line with Interim Guidelines.
    • The ventilation requirement for tank room is modified to allow for other alternative means for explosion prevention as an alternative to ventilation, in line with Interim Guidelines.
    • The ventilation requirement for ESD protected engine rooms is modified to allow for a lower rate in normal operation, in line with already enforced practice, and with Interim Guidelines.
    • Redundancy requirement for ventilation of pump and compressor room is added, in line with Interim Guidelines.
    • A new requirement containing safety requirements for spaces containing nitrogen generators or storage tanks is added. This is in line with similar requirements for chemical carriers and supply ships where nitrogen installations are common.
    • We have rearranged some of the requirements, by adding a new Sub-section, and moving requirements from Sec.3 G and Sec.6 D for better clarity of the rules.
  • Sec.4 Fire Safety
    • Some updates are done to bring the rules in line with similar requirements in the Interim Guidelines. Some requirements are moved to Sec.6.
  • Sec.5 Electrical Systems
    • Some updates are done to align with similar requirements in the Interim Guidelines. The main reason for these updates is to better include also CNG tank systems.
  • Sec.6 Control, Monitoring and Safety Systems
    • Some minor changes are done to align with the Interim Guidelines.
    • Some requirements are moved to Sec.3, and some are moved from Sec.3 and 4 to this section. Figures 1 and 2 are moved to Sec.3 and Table D1 is moved to B3.
    • The structure of the section is improved.

Pt.6 Ch.18 Ballast Water Management
Main changes coming into force 1 July 2010:

  • General
    • The structure of this chapter has been totally revised.
    • Reference to the safety requirements in machinery system rules - design principles, Pt.4 Ch.1 Sec.3 has been included
    • Reference to the performance and safety requirements in piping system rules – ship piping systems, Pt.4 Ch.6 Sec.4 has been included.
    • Update of content of the treatment requirements for the voluntary BWM-T class notation to bring these in line with the convention/ IMO guidelines texts.
    • The BWM-TP notation has been deleted.

Pt.6 Ch.19 Alternative Propulsion
Main changes coming into force 1 July 2010:

  • General
    • The name of the notation is changed from Emergency propulsion (respectively EP-1(a%)(+), EP-2(a%)(+) and EP-3(a%)(+)) to Alternative Propulsion (respectively AP-1(a%)(+), AP-2(a%)(+) and AP-3(a%)(+)).
    • Time limitations for engaging the alternative propulsion system is defined:
    • AP-1(a%)(+): it shall be possible to engage alternative propulsion system within maximum 30 minutes after failure to the main propulsion prime mover (may include mechanical work)
    • AP-2(a%)(+): it shall be possible to engage alternative propulsion system within maximum 5 minutes after failure to the main propulsion system (shall be possible from bridge)
    • AP-3(a%)(+): it shall be possible to engage alternative propulsion system within maximum 5 minutes after failure to the main propulsion system (shall be possible from bridge).
    • Redundancy requirements for auxiliary systems serving main and alternative propulsion systems are reduced for AP-1(a%)(+) and AP-2(a%)(+), so that both systems may be served by one set of auxiliaries in compliance with 1A1 main class requirements.

Pt.7 Ch.1 Survey Requirements
Main changes coming into force 1 July 2010:

  • Sec.1 General Requirements
    • In Table A1:
    • Class notation DSV-BOUNCE is deleted, and as classification of diving systems is reintroduced, new notations -Diving system-SURFACE and Diving system-SAT are added.
    • The E0 / ECO notations are moved from Table A2 to A1, thereby specifying that the E0 / ECO notation entail survey requirements beyond main class.
    • The name of the Emergency propulsion notation (respectively EP-1(a%)(+), EP-2(a%)(+) and EP-3(a%)(+)) has been changed to Alternative Propulsion (respectively AP 1(a%)(+), AP-2(a%)(+) and AP-3(a%)(+)).
    • New class notations DPS 0, DPS 1, DPS 2, DPS 3, -DYNPOS-ER, Anchor Handling, Towing, AHTS and Tug are added.
  • Sec.2 Annual Surveys Extent – Main Class
    • In item C105, test of automatic start of stand-by diesel generator is included as part of main class annual survey.
  • Sec.5 Miscellaneous Main Class Surveys
    • DYNPOS has been replaced by “dynamic positioning systems” throughout the Section.
  • Sec.6 Optional Class Notation Surveys
    • Item I101 is updated to include new class notations Diving system-SURFACE and Diving system-SAT.
    • Sub-section L has been amended with new DPS notations based on the principles in IMO MSC/Circ. 645 “Guidelines for vessels with dynamic positioning systems”.
    • Sub-section X has been amended and renamed from Emergency Propulsion to Alternative Propulsion.
  • Sec.7 Optional Class Notation Surveys - Continued
    • A new sub-section J has been added with periodical survey requirements for winch and other mandatory equipment under notations Tug, Towing, Anchor Handling, AHTS.
    • A new sub-section K. “Recycling” has been added giving requirements for class notation Recyclable.
    • A new sub-section L. “Dynamic Positioning Systems – Enhanced Reliability, DYNPOS-ER” has been added.

Main changes coming into force 1 January 2011:

  • Sec.1 General Requirements
    • A new item A404 concerning postponement of Renewal survey up to 12 months has been added.
    • In Table A1, class notations ESV-DP[HIL] and ESV-TAM[HIL] have been added.
  • Sec.4 Renewal Surveys Extent – Main Class
    • A new item B128 (replacing old B133) is added, amending requirements for examination of shipboard fittings used for mooring and normal towing operations and their supporting structures.
  • Sec.5 Miscellaneous Main Class Surveys
    • In item A102 at alternate bottom surveys in dry dock, new requirement has been given for the withdrawal of box coolers, if fitted, with examination of the box cooler space, water cover and top plate, mounting flange with weld connection to the hull, connection bolts and gaskets.
  • Sec.6 Optional Class Notation Surveys
    • A new sub-section Z which defines the survey scope related to E0 / ECO has been added.
  • Sec.7 Optional Class Notation Surveys - Continued
    • Editorial changes to the requirements for the class notation -Naval Support (….) have been made, to achieve harmonisation between the Classification Rules for HS, LC & NSC and that for Ships.
    • A new sub-section I. “Enhanced System Verification - SiO” has been added giving requirements for class notation ESV.

Pt.8 Ch.1 Common Structural Rules for Double Hull Oil Tankers with Length 150 Metres and above
Main changes July 2010:
(Rule Change Notice 2)

Coming into force 1 July 2010 :

  • Sec.2 Rule Principles
    • In items 2.1.2.1 and 2.1.3.1(b) the role and responsibilities of Classification societies have been clarified.
    • Item 3.1.7.4 is aligned with IACS UR S6 regarding lowest mean daily average design air temperature of -10°C.
  • Sec.4 Basic Information
    • In Table 4.1.1 the definitions of “superstructure” and “deck house” have been amended to be in line with ICLL.
    • A new item 3.2.3.4 bis regarding provisions for brackets with different arm lengths has been added.
    • Figure 4.3.4 and item 3.4.2.1 has been amended to clarify the requirements for cut-outs.
  • Sec.6 Materials and Welding
    • Item 1.2.3.1 is aligned with IACS UR S6 regarding lowest mean daily average design air temperature of -10°C.
    • In Table 6.1.3 rudder provisions have been deleted since rudder is not part of the scope of CSR Tankers.
    • Item 2.1.2.2 has been clarified and aligned with IACS UR F1.2.
    • Item 3.3.4.3 has been updated to include proportion (slenderness) requirements.
    • In item 5.4.1.3 it is clarified that “thickness” is to be taken as the “gross” thickness.
    • In item 5.7.4.1 the weld factor has been clarified.
    • In Table 6.5.4, Note 3 is also applicable to the weld factor for “primary support member of gross face area greater than 130.0 at ends” to “face plate in tanks” of “0.59”.
  • Sec.8 Scantling Requirements
    • Item 1.1.2.2(a) is amended, specifying that if the design has the lower tank designated as void space and the upper is designated as ballast tank then only the upper tank is required to be full and lower void space is empty and vice versa.
    • In Item 1.4.2.5 two new notes have been added clarifying that the thickness is to be calculated considering shear force correction.
    • Items 2.5.7.6, 2.5.7.9 and Table 8.2.3 have been amended for the Rules to have prescriptive requirements for bulkheads without lower stools.
    • In items 2.6.1.1, 2.6.1.2 and 2.6.1.8 the requirements applicable to the 1st primary support member adjacent to the transverse bulkhead have been clarified.
    • It is clarified that the requirements in items 6.2.3 and 6.2.4 are also applicable to wash bulkhead.
    • In item 6.2.2.5 (C), a misprint has been corrected.
    • A new item 6.2.5.4 bis is added specifying the effective breadth of the attached plate (web of the primary support member) for the calculation of the actual section modulus.
    • In Table 8.6.2 the definition of Msw-perm-sea has been clarified and updated.
    • In item 6.4.7.5, in the definition of Cs, the text “for acceptance criteria set AC3” has been deleted.
  • Sec.9 Design Verification
    • In Table 9.2.1 a new note 4) has been added.
  • Sec.11 General Requirements
    • Missing requirement from IACS UR S26 regarding hinges location has been added as a new item 1.1.6.15.
    • In item 3.1.3.7 “gross scantlings” has been changed to “net scantlings” to be in line with IACS UR A2
    • Items 3.1.2.15, 3.1.2.18, 3.1.4.21, 3.1.5.12 and 3.1.6.13 have been amended in order to clarify the allowable stress.
    • In Table 11.5.1, Row “8” has been deleted, as rudder is not part of the scope of CSR Tankers.
  • App.A Hull Girder Ultimate Strength
    • In item 2.1.1.1 the definition of syd has been clarified.
  • App.B Structural Strength Assessment
    • Item 2.3.1.7 has been clarified regarding un-symmetrical loading.
    • In Table B.2.4, Note 7), a clarification for the gale ballast/emergency ballast condition loading pattern B7 has been made.
    • In Table B.3.1 Notes 1 and 2 have been amended to clarify Note 3.
    • Item 4.3.1.2 has been amended for clarification.
  • App.C Fatigue Strength Assessment
    • Items 1.4.4.6, 1.4.4.8, 1.4.5.11 and 2.4.2.6 have been amended for clarification.
    • Figures C.2.2 and C.2.3 have been amended for clarification.

DNV specific changes July 2010:

  • Structure and layout have been aligned with IACS common structural rules to avoid confusion.

Pt.8 Ch.2 Common Structural Rules for Bulk Carriers with Length 90 metres and above
Main changes July 2010:
(Rule Change Notice 2)

Coming into force 1 July 2010:

  • Chapter 1 Sec.3 Functional Requirements
    • Item 2.5.1 is aligned with SOLAS II-1/3-6, the requirement is to be applied to bulk carriers of 20 000 gross tonnage and above.
  • Chapter 1 Sec.4 Symbols and Definitions
    • In item 3.7.1 the definition of lightweight is aligned with the definition in the Reg.3.22 Chapter II-1 of SOLAS.
  • Chapter 2 Sec.3 Access Arrangement
    • A new Sub-section 1.0 Application has been added, stating that the requirements in whole Sec.3 shall be applied to bulk carriers of 20 000 gross tonnage and above.
  • Chapter 3 Sec.1 Material
    • Item 2.3.1 has been aligned with IACS UR Rev.5.
    • Item 2.3.4 has been deleted as the requirement is not applicable to bulk carriers.
    • In item 2.3.9 the applicable role products welded attachment is clarified to that with length more than 0.15L and fitted to outside of hull plating.
  • Chapter 3 Sec.6 Structural Arrangements Principles
    • The application of 9.5.4 is added, referring to those ships having the additional class notation GRAB[X].
  • Chapter 4 Sec.5 External Pressures
    • Table 4 is aligned with the text in the amended ILLC and IACS UR S21. The definition of the distance “x” is modified and replaced by the new distance “xLL” which is measured from the aft end of freeboard length LLL.
    • In Table 5 pressure on forecastle deck is adjusted by a reduction factor of 0.75.
  • Chapter 4 App.1 Hold Mass Curves
    • The Appendix is revised to clarify the requirements corresponding to each class notation.
  • Chapter 9 Sec.4 Superstructures and Deckhouses
    • In item 3.2.1 the pressure for non-exposed decks of superstructures and deckhouses is introduced with a value of 5 kN/m2.
  • Chapter 9 Sec.5 Hatch Covers
    • In item 7.3.5 “Gross cross area” of securing devices is corrected to “net cross area”.
  • Chapter 10 Sec.1 Rudder and Manoeuvring Arrangement
    • Item 1.3 and the first sentence of item 1.1.1 are deleted to avoid any misleading use of the Area Recommendation formula.
  • Chapter 11 Sec.1 Construction
    • Item 1.2.1 and Table 1 are amended to be in line with the Revision 4 of IACS Recommendation No.47.
  • Chapter 11 Sec.2 Welding
    • Tables 1 and 2 have been amended for clarification.
  • DNV specific changes July 2010:
    • Structure and layout have been aligned with IACS common structural rules to avoid confusion.

Revised but not reprinted chapters
The following rule chapters have been revised as of July 2010, but not reprinted:

Pt.4 Ch.1 Machinery Systems, General
Pt.4 Ch.6 Piping Systems

See above for info regarding main changes.

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