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Pt.1 Ch.1 General Regulations
Main Changes in the Ship Rules July 2007

Significant editorial changes entering into force with immediate effect·

Sec.2 Scope of Rules and Class Notations

  • In Table B8, the class notation Crane Barge has been added.

  • In Table B38, the class notation IB(+) has been replaced by IB-X.

  • In Table B40, the class notation PIMS (HULL) has been replaced by PIMS-HULL.

Main changes coming into force 1 January 2008.

Sec.2 Scope of Rules and Class Notations

  • A new class notation HC-M has been inserted in Table B3. The new HC-M notation is similar to the existing HC-A notation, but the requirements originating from IACS URS25 have been removed.

  • With a view to meet new demands for class services in connection with loading and discharging, two new special feature notations:

    • EC (easy cleaning) and

    • EL (easy loading)

have been added to Table B38.

Pt.2 Ch.1 General Requirements for Materials
Main changes coming into force 1 January 2008

Sec.2 Testing Procedures
This section has been revised to incorporate changes in the amended IACS UR W2 and to improve user-friendliness.

  • Sub-section element B100 has been amended with respect to the use of alternative tensile test pieces. Amendments are mainly editorial.

  • Sub-section element B300 has been editorially amended to clarify the procedure for impact testing. The requirement for subsize test pieces with width 2.5 mm has been deleted.

Pt.2 Ch.2 Metallic Materials
Main changes coming into force 1 January 2008

Section 1 – Rolled Steel for Structural Application

  • This section has been completely rewritten and restructured. Changes in IACS UR W11 (hull steels) have been incorporated. Lessons learned from quality incidents with cracked and brittle hull steel plates have also been incorporated, see A305, A404, A501, A507 with cracked and brittle hull steel plates.

Section 6 – Bars for Chain Cables
This section has been completely rewritten and restructured. Changes in IACS UR W18 (chain cables) have been incorporated.

Section 9 – Aluminium Alloys
Changes in IACS UR W25 (aluminium alloys) have been incorporated. Most importantly, requirements for corrosion testing have been added.

Pt.3 Ch.1 Hull Structural Design, Ships with Length 100 metres and above
Main changes coming into force 1 January 2008

Sec.6 Bottom Structure

  • Item H301 has been amended. The class notation has been changed to IB-X, where X denotes which areas (area 1, 2 or 3) are to be strengthened.

  • A new item H302 has been added to the effect that the requirements in H301 do not apply to vessels with CSR notation.

  • Previous item H302 has been re-numbered H303.

Pt.3 Ch.2 Hull Structural Design, Ships with Length less than 100 metres
Main changes coming into force 1 July 2007
Under Sec.5, sub-section element G400 has been amended by replacing the class notation IB(+) with IB-X and aligning with the related text in Pt.3 Ch.1 Sec.6 H300.

Pt.3 Ch.3 Hull Equipment and Safety
Significant editorial changes coming into force with immediate effect

Sec.6 Openings and Closing Appliances
Under item I304, the text related to the use of the wall thickness table for air pipes has been clarified to include pipes in stainless steel.

Main changes coming into force 1 January 2008
General
The changes have been made to align with amended IACS UR W18, re-structure contents to improve user-friendliness and provide clearer scope/requirements for certification of chain cables.

Sec.3 Anchoring and Mooring Equipment
Sub-section E has been completely revised:

  • Sub-section element E100 has been amended to cover all requirements applicable to design of chain cables and any conditions or restrictions for their use.

  • Sub-section elements E200 through E900 have been amended to cover all requirements applicable to the manufacture, testing and certification of chain cables.

Pt.4 Ch.3 Rotating Machinery, Drivers
Changes entering into force with immediate effect

Sec.1 Diesel Engines
Item E202 has been has been replaced by:

  • 202 When electronic speed governors of propulsion engines form part of a remote control system, they shall comply with Ch.1 Sec.4 A400 (rules for ships) and Ch.9.

  • Electronic speed governors and their actuators shall be type tested according to Standard for Certification No. 2.4.

Item E303 has been amended to:
303 The overspeed protective device shall be adjusted to ensure that the engine speed cannot exceed the maximum permissible speed as determined by the design, but not beyond 120% rated speed except for diesel engines driving generators where 115% of rated speed applies.

(IACS UR M3.1.2 and M3.2.5)

Pt.4 Ch.8 Electrical Installations
This chapter was substantially revised in January 2007. However, in view of a need to undertake a number of editorial improvements, mainly as a consequence of changes to common requirements in the DNV Offshore Standard DNV-OS-D201 “Electrical Installations”, this booklet has been re-printed

Pt.5 Ch.1 Ships for Navigation in Ice
Changes entering into force with immediate effect

Sec.2 Basic Ice Strengthening

Item B101 has been replaced by:
The requirements for the forward ice belt region, as defined in Sec.3 Fig.1, for sub-section elements 200 - 700, shall be in accordance with Sec.3 as follows:

  • In Table B1, the value of ho and h shall be as given for ICE-1C.

  • The ice pressure shall be determined in accordance with Sec.3 B200, where the factor c1, as given in Table B3, is taken as being equal to 0.55.

  • Vertical extension of the ice belt plating and framing shall be:

    • Plating: 0.5 m above UIWL and 0.5 m below LIWL

    • Framing: 0.62 m above UIWL and 1.0 m below LIWL.

  • Item B202, concerning ice plate shell plating, has been deleted.

  • In item B301, the bullet list has been replaced by:

    • Frames shall be effectively attached to all supporting structures. Transverse and longitudinal frames crossing support structures shall be connected to these with lugs. Alternatively, top stiffener in combination with lug may be used. The upper end of intermediate frames may be sniped at a stringer or deck provided the ice belt covers not more than 1/3 of the span.

    • Frames where the angle between the web and the shell is less than 75 degrees shall be supported against tripping by brackets, intercostals, stringers or similar at a distance preferably not exceeding 2.5 m. Transverse frames perpendicular to shell which are of unsymmetrical profiles shall have tripping preventions if the span is exceeding 4.0 m.

    • The web thickness of the frames shall be at least one half of the thickness of the shell plating. Where there is a deck, tank top, bulkhead, web frame or stringer in lieu of a frame, at least one half of the thickness of shell plating shall be kept to a depth of not less than 0.0025 L, minimum 0.2 m.

  • Item B401 has been amended with the following addition:

    • Web frames shall be as given in Sec.3 E200 - F200, given that the product p×h shall not be taken less than 200.

  • Item B601 has been amended to read:

    • The rudder and steering arrangement shall comply with Sec.3 I200, given that the maximum service speed of the vessel is not taken less than 14 knots.

  • Item B602, concerning scantlings of rudders, rudder stocks and rudder shafts, has been deleted.

  • A new sub-section element, B700 has been introduced, concerning stem plate thickness.

  • Item D101 has been replaced by:

    • The requirements for the forward ice belt region, as defined in Sec.3 Fig.1, shall, for sub-section elements 200 - 400, be in accordance with Sec.3 as follows:

  • In Table B1, the value of ho and h shall be as given for ICE-1C.

  • The ice pressure shall be determined in accordance with Sec.3 B200 where:

    • For determination of k, the machinery output, Ps need not be taken >750 kW.

    • The factor c1, as given in Table B3, shall be taken as equal to 0.3.

  • Item D201 has been replaced by:

    • In the forward ice belt region, as defined in 101, the shell plate thickness shall be as given in Sec.3 C.

  • Item D202 has been replaced by:

    • The vertical extension of the ice strengthening, as given in Sec.3 C100, shall be as given for notation ICE-C.

  • Item D203 has been deleted.

  • Item D302 has been replaced by:

    • The framing shall extend vertically not less than 0.62 m above the UIWL and 1.0 m below the LIWL.

  • In item D303, the reference has been replaced by: B301.

  • Item D401 has been replaced by:

    • The plate thickness of a shaped plate stem and any part of the bow which forms an angle of 60 degrees or more to the centreline in a horizontal plane shall comply with Sec.3 H102 up to 600 mm above UIWL.

Pt.5 Ch.2 Passenger and Dry Cargo Ships
Significant editorial changes entering into force with immediate effect

Sec.5 Dry Bulk Cargo Carriers

  • In item E101, the first line has been replaced by “Bulk carriers shall be fitted with water level detectors giving audible and visual alarms on the navigation bridge:” in order to align with SOLAS XII/12.2.

Main changes coming into force 1 July 2007

Sec.4 General Cargo Carriers
A new sub-section D has been introduced to cover SOLAS Ch. II-1 Reg.23-3 regarding detection of water ingress in single hold cargo ships other than bulk carriers.

Sec.5 Dry Bulk Cargo Carriers
In item F201, the text from IACS UR S28 has been included, saying that the aft bulkhead of the forecastle may be fitted forwarded of the forward bulkhead provided the forecastle length is not less than 7% of the ship length abaft the FP, where FP is as defined in International Convention on Load Line 1966 and its protocol 1988.

Sec.8 Enhanced Strength for Bulk Carriers

  • Table A1, concerning ES (D) class notations, has been deleted. This is done because after the amendments to SOLAS XII, these IACS Unified Requirements are no longer mandatory for single skin bulk carriers only, but also mandatory for double skin bulk carriers. The reason for introducing these additional notations was to "show" that even if it was a double skin bulk carrier it complied with the flooding requirements. However, the class notations ES(S) and ES(D), which are the only notations included in Pt.1 Ch.1 Sec.2, are still valid and are described in Sec.5. Hence, DNV are not removing any class notations, but amending an existing class notation to be in line with SOLAS XII.

  • In addition, sub-section element A500 has been deleted (the text was not longer correct and since this is a requirement covered by the stability approval, an amendment was not made).

  • In sub-section C, the formula for calculating the actual hull girder shear stress has been deleted and substituted by the text as given in latest revision of IACS UR S17, Rev.3. However, this will not change the result, since the deleted formula is the same as given in Pt.3 Ch.1 Sec.5 D (IACS UR's 11).

  • Sub-sections D and E have been amended, reflecting the latest revision of SOLAS XII (which is also reflected in IACS UR's S18 and S20), where flooding is made mandatory for double skin bulk carriers as well.

Main changes coming into force 1 January 2008

General
A complete set of requirements for a new class notation HC-M have been inserted, involving Sec.1, Sec.4 and Sec.5. The new HC-M notation is similar to the existing HC-A notation, but the requirements originating from IACS URS25 have been removed.

Sec.2 Passenger Ships
The requirements for hull arrangement and strength of passenger ships has been updated to align with current knowledge, experience and practices and to make them clearer and more transparent. The main changes are:

  • All existing text taken from SOLAS Ch.II-1, Part B has been removed. Instead, a general reference to the SOLAS requirements has been included.

  • The relevance of the “strength deck” definition has been explained for passenger ships.

  • The documentation requirements have been updated.

  • Reference has been made to the new classification note: CN 31.8.

  • "Direct strength analysis of hull structures in passenger ships".

  • Requirements for global envelope limit curves have been included.

  • Requirements for deck structure have been inserted, taking into account the special loads for passenger ships.

  • Also, requirements for the following have been included:

    • pillar analysis

    • buckling of diaphragm plates in cofferdam structure

    • glass roofs

    • fatigue.

Sec.5 Dry Bulk Cargo Carriers
With a view to meet new demands for class services in connection with loading and discharging, requirements for two new special feature notations:

  • EC (easy cleaning) and

  • EL (easy loading)

have been added. See items A126 - A127, items A306 – 308 and subsection H.

Pt.5 Ch.5 Liquefied Gas Carriers
Main changes coming into force 1 July 2007
Under Sec.5, item E202 and item 203 have been amended to remove inconsistencies in scantling requirements for stiffeners of Independent Tanks Type A, in relation to Pt.3 Ch.1 (1A1 rules).

Pt.5 Ch.7 Tugs, Supply Vessels and Other Offshore/Harbour Vessels
Main changes coming into force 1 July 2007

Sec.4 Additional Class Notation SF. Damage Stability for Offshore Service Vessels
The Guidelines for the Design and Construction of Offshore Supply Vessels has been amended by IMO Res. MSC.235(82), and this section has been adjusted accordingly.

Sec.7 Crane Vessels
A new item A103 has been added covering requirements for the class notation Crane Barge.

Main changes coming into force 1 January 2008

Sec.3 Supply Vessels

  • Under item C101, the rule reference to the piping system rules has been corrected. Further, a paragraph has been added to clarify that redundancy of cargo pumps is not required.

  • Under item C102, the piping requirements have been deleted, moved to Pt.4 Ch.6 and replaced by a new requirement for remote stop of cargo pumps.

  • Under sub-section element C400, the requirements for certification of cargo pumps for non-flammable liquid and hydraulic pumps used to drive cargo pumps have been deleted.

Sec.5 Fire Fighters

  • Under item A602, the test requirements have been split in two parts in order to harmonize with a realistic fire fighter situation.

  • Under item F305, F404 and F405, a new and better requirement (net positive suction head) have been introduced in order to ensure good working conditions for the pump. The modification has been based on experience feedback.

Sec.10 Offshore Service Vessels for Transportation of Low Flashpoint Liquids

  • Under item A202, the assumptions related to simultaneous carriage of dry cargo and low flashpoint liquid have been revised and clarified.

  • Under item A301, the definition of hazardous areas has been revised to be in line with IEC standard publication 60092-502 (1999 issue).

  • Under item A303, a definition of cargo area in line with IMO Res. A.673(16) has been introduced.

  • Under item A403, text has been revised to be in accordance with Sec.11.

  • Under item A406, documentation requirements have been revised to be in accordance with Ch.4.

  • Under item B108, a requirement related to cargo segregation in line with IMO Res. A.673(16) has been introduced.

  • Under sub-section element B200, the requirements related to ventilation openings for non-hazardous spaces have been revised and clarified.

  • Under sub-section element B300, requirement related to entrance to pump room made less strict.

  • Under item C103, a requirement related to cargo segregation in line with IMO Res. A.673(16) has been introduced.

  • Under item C105, the requirement for separate drainage system for spaces in the cargo area has been clarified in line with IMO Res. A.673(16).

  • Under item C106, a requirement related to drive water for bilge ejectors in the cargo area has been introduced.

  • Under sub-section element D100, the requirements related to inert gas system have been deleted and moved to sub-section element D200.

  • Under sub-section element D200, all relevant requirements related to inert gas system on supply vessels have been included to improve user-friendliness.

  • Under sub-section element D300, a requirement related to cargo segregation in line with IMO Res. A.673(16) has been introduced.

  • Under item E101, the requirement for ventilation system within the cargo area has been revised to be in line with IMO Res. A.673(16).

  • Under sub-section element G100, the requirements related to electrical installations have been revised to be in line with IEC standard publication 60092-502 (1999 issue).

  • Under item H201, the requirements related to tank level gauging have been revised and clarified.

  • Under item H301, the requirement for portable gas measuring equipment has been revised and clarified to be in line with IMO Res. A.673(16).

  • Under item I103, the requirements related to the instruction manual has been revised and clarified.

Sec.11 Recovered Oil Reception and Transportation

  • Under items A401, A402 and A403 (new item), documentation requirements have been revised to be in accordance with Ch.3.

  • Under item B204, the requirement is revised as A-0 window are now available in the marked.

  • Under item B205, the equipment is now compatible with the requirements for class notation LFL, Sec.10 F302.

  • Under sub-section element C100, the definition of hazardous areas has been revised to correspond with the terminology in the IEC standard publication 60092-502 (1999 issue).

  • Under sub-section element D200, the requirements related to ventilation systems have been revised to be in line with IEC standard publication 60092-502 (1999 issue).

  • Under sub-section element D500, the requirements related to electrical equipment have been revised to be in line with IEC standard publication 60092-502 (1999 issue).

Pt.5 Ch.10 Ships for Carriage o Refrigerated Cargoes ad Containers
This booklet is a reprint of the previous edition and apart from clarifications of text and the inclusion of amendments and corrections, published in the January 2007 edition of Pt.0 Ch.1 Sec.3, no other changes have been made. The booklet supersedes the January 2003 edition of the same chapter.

Pt.5 Ch.14 Naval ad Naval Support Vessels
Main changes coming into force 1 January 2008

General
Experience with verification of shock resistance of equipment and foundations for naval craft have shown that shock requirements should not be a mandatory requirement for all naval craft. This is so because shock is a "performance requirement" set by the owner, not a minimum safety requirement, and the rules do not specify any minimum limits.

Sec.4 Structural Strength
Shock requirements for equipment foundations have been removed.

Sec.6 Piping Systems

  • Shock requirements for equipment have been removed.

  • Changes in requirements for sea water cooling system. Removal of requirements covering temporary jumper connections and arrangement of fire main as a ring main line.

Sec.7 Machinery, Propulsion and Positioning
Shock requirements for equipment have been removed.

Sec.8 Electric Power Generation and Transfer
Shock requirements for equipment have been removed.

Sec.9 Control and Monitoring
Shock requirements for equipment have been removed.

Sec.10 Fire Safety

  • Shock requirements for equipment have been removed.

  • Introducing requirements covering horizontal fire boundaries.

Sec.15 Storage Rooms of Explosives
Requirements for blast routes for explosions have been removed.

Pt.6 Ch.8 Nautical Safety
Changes entering into force with immediate effect

Under Sec.6, item I201 an editorial correction has been made to the second list by including the list item “heading and/or track control”.

Pt.7 Ch.1 Survey requirements
Main changes coming into force 1 July 2007

General
Sec.2, Sec.4 and Sec.8 have been modified to cover survey requirements as a consequence of SOLAS Ch. II-1 Reg.23-3 regarding detection of water ingress in single hold cargo ships other than bulk carriers.

Sec.1 General Requirements
In Table A1, in the last row the class notation PIMS (HULL) has been changed to PIMS-HULL.

Sec.6 Optional Class Notation Surveys
In item Y102, the last sentence has been replaced by:
This is considered complied with upon survey of main class and optional notations E0, ECO, NAUT, NAUT-AW, NAUT-OC, CCO or POSMOOR-ATA, whichever is applicable.

  • In item Y201, the class notation POSMOOR has been replaced by POSMOOR-ATA.

  • Item Y202 has been changed to: “No additional scope beyond the scope for the applicable notation.” and item Y203 has been deleted.

Sec.7 Optional Class Notation Surveys - Continued

  • In sub-section D, the class notation PIMS (HULL) has been replaced by PIMS-HULL.

  • Item D301 has been amended to read: Prior to the implementation of PIMS-HULL, a ship specific Hull Inspection Manual shall be submitted to DNV.

  • Sub-section element D400 has been amended as follows:

    • D 400 Annual audits

    • 401 The retention of PIMS-HULL is subject to annual audits by DNV.

  • In item D501, PIMS (HULL) has been changed to PIMS-HULL.

Main changes coming into force 1 January 2008

General
The requirements concerning the inspection of the “propeller connection” have been removed from the "Bottom Survey" requirements. Instead a newly created survey named the "Propeller Connection Survey" has been introduced.

This booklet has further been aligned with current IMO updates, MSC197(80) regarding amendments to Resolution A.744(18) which entered into force 1 January 2007. This update covers also an alignment with IACS UR Z10.2 rev.21 and UR Z6. The following items can be mentioned:

  • Annual thorough survey of cargo hatch covers and coamings with examination in the open as well as closed positions and including verification of proper opening and closing operation has been introduced for bulk carriers.

  • Scope for close-up examination of shell frames for Cape Size bulk carriers has been increased at renewal survey.

  • Survey of the outside of the ship's hull as part of renewal survey has been introduced in connection with survey arrangement hull continuous.

Sec.7 Optional Class Notation Surveys – Continued

  • A new sub-section E has been introduced, covering two new special feature notations:

    • EC (easy cleaning) and

    • EL (easy loading).

Pt.7 Ch.2 Retroactive requirements
Main changes coming into force 1 July 2007

Sec.2 Miscellaneous Requirements

  • A new sub-section D has been included to cover survey requirements as a consequence of SOLAS Ch. II-1 Reg.23-3 regarding detection of water ingress in single hold cargo ships other than bulk carriers.

  • A new sub-section E has been introduced regarding marking on ships with any ice class notation built before 1 July 2007.
    The reason for the amendment is that the Finnish Maritime Authorities (FMA) Ice Rule changes become effective for a small number of existing ships from the first scheduled dry-docking after 1 July 2007. FMA rule changes entered into force 1 January 2007.

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