Class and Statutory News

IMO SDC 2 OVERVIEW AND SUMMARY REPORT

Feb. 23 2015

IMO SDC 2 OVERVIEW AND SUMMARY REPORT

Report on SDC 2

Introduction

The Sub-Committee (SC) on Ship Design and Construction (SDC) had its second session from 16 to 20 February 2015, which took place in IMO headquarters in London. This report provides an overview on agenda items discussed.

Agenda of SDC 2

1 Adoption of the agenda 

2 Decisions of other IMO bodies 

3 Amendments to SOLAS chapter II-1 subdivision and damage stability regulations 

4 Guidelines on safe return to port for passenger ships 

5 Second-generation intact stability criteria 

6 Amendments to the criterion for maximum angle of heel in turns of the 2008 IS Code 

7 Amendments to part B of the 2008 IS Code on towing, lifting and anchor handling operations 

8 Guidelines addressing the carriage of more than 12 industrial personnel on board vessels engaged on international voyages 

9 Classification of offshore industry vessels and a review of the need for a non-mandatory code for offshore construction support vessels 

10 Amendments to SOLAS regulation II-1/11 and development of associated Guidelines to ensure the adequacy of testing arrangements for watertight compartments 

11 Provisions to ensure the integrity and uniform implementation of the 1969 TM Convention 

12 Guidelines for use of Fibre Reinforced Plastic (FRP) within ship structures 

13 Amendments to SOLAS chapter II-2, the FTP Code and MSC/Circ.1120 to clarify the requirements for plastic pipes on ships 

14 Amendments to SOLAS and FSS Code to make evacuation analysis mandatory for new passenger ships and review of the Recommendation on evacuation analysis for new and existing passenger ships 

15 Interpretation of SOLAS regulation II-2/13.6 on means of escape from ro-ro cargo spaces 

16 Review of conditions under which passenger ship watertight doors may be opened during navigation and development of amendments to SOLAS regulation II-1/22 and MSC.1/Circ.1380 

17 Amendments to SOLAS chapter II-1 and associated guidelines on damage control drills for passenger ships 

18 Guidelines for wing-in-ground craft 

19 Review of general cargo ship safety 

20 Amendments to the 2011 ESP Code 

21 Unified interpretation to provisions of IMO safety, security, and environment-related Conventions 

22 Biennial agenda and provisional agenda for SDC 3 

23 Election of Chairman and Vice-Chairman for 2016 

24 Any other business

25 Report to the Maritime Safety Committee 

SUBDIVISION AND DAMAGE STABILITY

AMENDMENTS TO SOLAS CHAPTER II-1 SUBDIVISION AND DAMAGE STABILITY REGULATIONS 

GUIDELINES ON SAFE RETURN TO PORT FOR PASSENGER SHIPS 

AMENDMENTS TO SOLAS CHAPTER II-1 AND ASSOCIATED GUIDELINES ON DAMAGE CONTROL DRILLS FOR PASSENGER SHIPS

ANY OTHER BUSINESS

(items 3, 4, 17 and 24)   ( WP 3)

SDC 2:

- Agreed to the proposed amendments to SOLAS chapter II-1, with a view of approval by MSC 95 and subsequent adoption; and 

- Noted the decisions taken by the working-group on matters related to the development of these draft amendments to SOLAS chapter II-1, as follows:

Having considered the need of amending SOLAS regulation II-1/8-1.3 (SDC 2/4), the group agreed that residual strength calculations need not to be included in the operational information and, therefore, no changes were made to the regulation.

Keeping in mind that there are no mandatory requirements on damage stability for cargo ships less than 80 m in length, no further changes to the proposed amendments to SOLAS regulation II-1/9 need to be made with regard to cargo ships of this size.

Regarding the requirements for watertightness of hatches which become immersed after damage, after extensive discussion, the proposed amendments were agreed to.

Considering the proposal in document SDC 2/3/9 (United States) regarding double hulls in way of main engine-rooms on passenger ships this could not be finalised, but could be further considered at SDC 3.

Regarding damage control drills for passenger ships, the group concluded that further consideration was necessary

Further, the Sub-Committee:

- agreed to finalise the draft amendments to the Explanatory Notes in 2016; 

- agreed that matters related to the survivability of passenger ships need to be further considered at SDC 3; 

- agreed to finalise the draft Revised Guidelines on operational information for masters of passenger ships for safe return to port by own power or under tow (MSC.1/Circ.1400) at SDC 3; 

- agreed on removing the linkage of LSA arrangements to the formula for the required subdivision index R and instruct the Secretariat to advise the SSE Sub-Committee accordingly so that they can consider the matter regarding any possible consequences for SOLAS regulation III/21.

And also finalised the text of chapter 2 of the draft OSV Chemical Code on ship survival capability and location of cargo tanks, to be forwarded to the PPR Sub-Committee.

INTACT STABILITY

DEVELOPMENT OF SECOND GENERATION INTACT STABILITY CRITERIA 

DEVELOPMENT OF AMENDMENTS TO PART B OF THE 2008 IS CODE ON TOWING, LIFTING AND ANCHOR HANDLING OPERATIONS 

(items 5 & 7) (WP4)

The Sub-Committee:

- Agreed, in principle, to draft amendments to the 2008 IS Code regarding vulnerability criteria and the standards (levels 1 and 2) related to parametric roll, pure loss of stability and surf-riding / broaching; 

- Agreed, in principle, to draft amendments to chapter 6 of part B of the 2008 IS Code with regard to ice accretion in timber deck cargo; 

- Agreed to draft amendments to part B of the 2008 IS Code regarding vessels engaged in anchor handling operations.

GUIDELINES ADDRESSING THE CARRIAGE OF MORE THAN 12 INDUSTRIAL PERSONNEL ON BOARD VESSELS ENGAGED ON INTERNATIONAL VOYAGES 

CLASSIFICATION OF OFFSHORE INDUSTRY VESSELS AND CONSIDERATION OF THE NEED FOR A NON-MANDATORY CODE FOR OFFSHORE CONSTRUCTION SUPPORT VESSELS 

(Items 8 and 9) (WP 6)

The Sub-Committee: 

- agreed to a draft MSC circular on Definition of industrial personnel, for assisting Member Governments on developing and implementing regulations, not to specify the vessel types.

- agreed to the terms of reference for the correspondence group, to: 

.1 finalise the draft Guidelines for offshore service craft (OSC) used in windfarm service, based on the annex to, and taking account comments in documents SDC 2/9/1 and SDC 1/INF.14, also taking into account document SDC 2/9; and

.2 further develop with a view towards finalising the draft Guidelines for offshore construction vessels (OCV) used in windfarm service, based on annex 3 to document SDC 1/WP.6, incorporating amendments from, and taking into account document SDC 2/9, and taking into account document SDC 2/9/1, paragraph 13. 

AMENDMENTS TO SOLAS REGULATION II-1/11 AND DEVELOPMENT OF ASSOCIATED GUIDELINES TO ENSURE THE ADEQUACY OF TESTING ARRANGEMENTS FOR WATERTIGHT COMPARTMENTS 

(item 10)

the Sub-Committee could not agree to amend SOLAS regulation II-1/11 and, with regard to the draft Guidelines for procedures of testing tanks and tight boundaries and the draft Guidance on verification of the quality management systems, the Sub-Committee recognised that interested Member Governments and international organisations could submit comments to MSC 95 on the matter. 

PROVISIONS TO ENSURE THE INTEGRITY AND UNIFORM IMPLEMENTATION OF THE 1969 TM CONVENTION 

(item 11)

The SC decided to close this item, without taking any further action on proposals submitted at this session ( SDC 2/11, 11/1 and 11/2 ) until experience with the implementation of the Unified interpretations relating to the International Convention on Tonnage Measurement of Ships, 1969 (TM.5/Circ.6) is acquired. 

FIRE PROTECTION

GUIDELINES FOR USE OF FIBRE REINFORCED PLASTIC (FRP) WITHIN SHIP STRUCTURES 

AMENDMENTS TO SOLAS CHAPTER II-2, THE FTP CODE AND MSC/CIRC.1120 TO CLARIFY THE REQUIREMENTS FOR PLASTIC PIPES ON SHIPS 

AMENDMENTS TO SOLAS AND FSS CODE TO MAKE EVACUATION ANALYSIS MANDATORY FOR NEW PASSENGER SHIPS AND REVIEW OF THE RECOMMENDATION ON EVACUATION ANALYSIS FOR NEW AND EXISTING PASSENGER SHIPS 

INTERPRETATION OF SOLAS REGULATION II-2/13.6 ON MEANS OF ESCAPE FROM RO-RO CARGO SPACES 

ANY OTHER BUSINESS 

(Items 12, 13, 14, 15 and 24) (WP5)

The Sub-Committee: 

- Agreed to draft Interim Guidelines for use of Fibre Reinforced Plastic (FRP) elements within ship structures: Fire safety issues, and the associated MSC circular, for submission to MSC 95 for approval which should only be used as a supplement to the Guidelines for the approval of alternatives and equivalents as provided for in various IMO instruments (MSC.1/Circ.1455) and the Guidelines on alternative design and arrangements for fire safety (MSC.1/Circ.1002) when approving FRP elements in ship structures. 

- Agreed to a draft Unified interpretation of the Guidelines for Safe Access to Tanker Bows (resolution MSC.62(87)), based on IACS UI SC 253 , on fire resistance of FRP gratings.  

- Agreed to draft amendments to the Guidelines for the application of plastic pipes in ships (resolution A.753(18)), as amended by resolution MSC.313(88), with  keeping the existing five groups of fire endurance levels for plastic pipes. 

- Agreed to draft amendments to SOLAS regulation II-2/13 on evacuation analysis; this requirement would also apply to passenger ships other than ro-ro passenger ships, carrying more than 36 passengers constructed on or after the date of entry into force of the amendments. 

REVIEW OF CONDITIONS UNDER WHICH PASSENGER SHIP WATERTIGHT DOORS MAY BE OPENED DURING NAVIGATION AND DEVELOPMENT OF AMENDMENTS TO SOLAS REGULATION II-1/22 AND MSC.1/CIRC.1380 

(item 16)

The SC decided, for new ships,: 

- Deletion of SOLAS regulation II-1/22.4 ; and

- Issuance of a new guidance replacing MSC.1/Circ.1380, in particular to reflect the deletion of regulation II-1/22.4 (i.e. removal of all provisions related to category A watertight doors) and that category B watertight doors must comply with the floatability assessment criteria in section 3 of appendix 1, to be applied when the amendment to Reg.II-1/22 comes into force.

- While MSC.1/Circ.1380 would remain for existing ships.

UNIFIED INTERPRETATION TO PROVISIONS OF IMO SAFETY, SECURITY, AND ENVIRONMENT-RELATED CONVENTIONS 

(item 21)   (WP 7)

The SC agreed (based on IACS submissions) to draft MSC Circulars  on interpretations:

- Regulation II-1/3-6, as amended, and the revised Technical Provisions for means of access for inspections (IACS UI SC191), (amendments to MSC.1/Circ.1464/Rev.1) 

- Continuous hatchways (regulation 36(6) of the Protocol of 1988 relating to the International Convention on Load Lines, 1966) (IACS UI LL79) 

- Clarifications relating to the Code on Noise Levels on Board Ships 

- Prevention of heat transmission by insulation and structural details for drainage 

- Means of escape from machinery spaces on passenger ships 

- Means of escape from machinery spaces on cargo ships

- Means of escape from accommodation spaces, service spaces and control stations on cargo ships 

- Means of escape from machinery control rooms and main workshops  

- Fire integrity of the boundaries of ro-ro/vehicle spaces on passenger and cargo ships

WORK PROGRAMME 

(item 22) (WP 2)

PROPOSED WORKING ARRANGEMENTS FOR SDC 3 (scheduled 18 to 22 January 2016)

The Sub-Committee will be invited to agree to establish, at SDC 3, working and/or drafting groups on subjects to be selected from the following list whereby the Chairman, taking into account the submissions received on the respective subjects, would advise the Sub-Committee well in time before SDC 3 on the final selection of such groups: 

1 Subdivision and Damage Stability (SDS) (agenda items 3, 4, 5 and 10)

2 Intact stability matters (agenda items 6 and 7) 

3 Fire Protection (agenda item 8) 

4 Classification of offshore industry vessels and a review of the need for a non-mandatory code for offshore construction support vessels (agenda item 12) 

5 Guidelines for wing-in-ground craft (agenda item 13) 

CORRESPONDENCE GROUPS ESTABLISHED BY SDC 2 reporting to SDC 3

CG 1 – Subdivision and Damage Stability (SDS) (agenda items 3, 4, 5 and 10) 

CG 2 – Intact stability (IS) (agenda items 6 and 7) 

CG 3 – Fire Protection (agenda item 8) 

CG 4 – Classification of offshore industry vessels and a review of the need for a non-mandatory code for offshore construction support vessels (agenda item 12) CG 5 – Guidelines for wing-in-ground craft (agenda item 13)