2.3 Intact stability in the displacement mode
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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 A — GENERAL - 2.3 Intact stability in the displacement mode

2.3 Intact stability in the displacement mode

  2.3.1 Hydrofoil craft fitted with surface-piercing foils and/or fully submerged foils shall have sufficient stability under all permitted cases of loading to comply with the relevant provisions of annex 6 and specifically maintain a heel angle of less than 10° when subjected to the greater of the heeling moments in 1.1.2 and 1.1.4 of that annex.

  2.3.2 Subject to 2.3.4, multihull craft other than hydrofoil craft shall meet the relevant requirements of annex 7 in all permitted cases of loading.

  2.3.3 Subject to 2.3.4, monohull craft other than hydrofoil craft shall meet the relevant requirements of annex 8 in all permitted conditions of loading.

  2.3.4 Where the characteristics of multihull craft are inappropriate for application of annex 7 or the characteristics of monohull craft are inappropriate for application of annex 8, the Administration may accept alternative criteria equivalent to those stipulated, as appropriate to the type of craft and area of operation. The requirements of annexes 7 and 8 and may be applied as indicated in the table below.

Table 2.3.4 Application of annexes 7 and 8 to monohull and multihull craft footnote

GMT Angle of maximum GZ
≤ 25° > 25°
≤ 3 m annex 7 or annex 8 annex 8
> 3 m annex 7 annex 7 or annex 8
where:
GMT = transverse metacentric height in the loading condition corresponding to the design waterline, corrected for free surface effects (m)
GZ = righting lever
Parent topic: PART A — GENERAL
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