Regulation 25-1
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Statutory Documents - IMO Publications and Documents - Resolutions - Assembly - IMO Resolution A.684(17) – Explanatory Notes to the Solas Regulations on Subdivision and Damage Stability of Cargo Ships of 100 Metres In Length and Over – (Adopted on 6 November 1991) - Annex - Explanatory Notes to the SOLAS Regulations on Subdivision and Damage Stability of Cargo Ships of 100 Metres in Length and Over - Part B - Regulation 25-1

Regulation 25-1

 The purpose of .6 of the footnote to Regulation 25-1 is to exclude from the application of the regulations on subdivision and damage stability of cargo ships (part B-1) only those ships which must comply with the damage stability requirements of the 1966 Load Line Convention in order to obtain a type A or type B-60 through to type B-100 freeboard assignment.

 Part B-1 regulations were developed and intended as a separate required standard for all cargo ships. Equivalency between the part B-1 damage stability requirements and those of the Load Line Convention is neither implied nor suggested.

Parent topic: Part B

Paragraph 3

 The circumstances where this paragraph of the regulations might apply include, for example, the following:

  • .1 ships constructed in accordance with a standard of damage stability with a set of damage criteria agreed by the Administration;

  • .2 ships where the side shell has been significantly strengthened by the provision of a double skin where it may be agreed to use enhanced values of the reduction factor r (Regulation 25-5.2). In such a case, supporting calculations indicating the superior energy-absorbing characteristics of the structural arrangement are to be provided;

  • .3 vessels of a multi-hull design, where the subdivision arrangements would need to be evaluated against the basic principles of the probabilistic method since the regulations have been written specifically for mono-hulls.

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