2.13 Buoyancy and stability in the displacement mode following damage
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Statutory Documents - IMO Publications and Documents - International Codes - HSC 2000 Code - International Code of Safety for High-Speed Craft, 2000 – Resolution MSC.97(73) - Chapter 2 - Buoyancy, stability and subdivision - PART B - REQUIREMENTS FOR PASSENGER CRAFT - 2.13 Buoyancy and stability in the displacement mode following damage

2.13 Buoyancy and stability in the displacement mode following damage

  2.13.1 Following any of the postulated damages detailed in 2.6.6 to 2.6.11, in addition to satisfying the requirements of 2.6.12 and 2.6.13, the craft in still water shall have sufficient buoyancy and positive stability to simultaneously ensure that:

  • .1 the angle of inclination of the craft from the horizontal does not normally exceed 10° in any direction. However, where this is clearly impractical, angles of inclination up to 15° immediately after damage but reducing to 10° within 15 minutesfootnote shall be permitted provided that efficient non-slip deck surfaces and suitable holding points, e.g., holes, bars, etc., are provided; and

  • .2 any flooding of passenger compartments or escape routes which might occur will not significantly impede the evacuation of passengers.

  2.13.2 In addition to the requirements in 2.13.1, category B craft shall also satisfy the following criteria after sustaining raking damage of 100% of length L, having the girth and penetration given in 2.6.9.2.2, to any part of the surface of the hull(s) defined in 2.6.9.1:

  • .1 The angle of inclination of the craft from the horizontal shall not exceed 20° in the equilibrium condition;

  • .2 the range of positive righting lever shall be at least 15° in the equilibrium condition;

  • .3 the positive area under the righting lever curve shall be at least 0.015 m·rad in the equilibrium condition;

  • .4 the requirements of 2.6.12.3 and 2.13.1.2 are satisfied; and

  • .5 in intermediate stages of flooding, the maximum righting lever shall be at least 0.05 m and the range of positive righting lever shall be at least 7°.

In complying with the above, the righting lever curve shall be terminated at the angle of downflooding, and only one free surface need be assumed.

Parent topic: PART B - REQUIREMENTS FOR PASSENGER CRAFT
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