2.3.1 The stability of a craft in the displacement
mode should be such that when in still water conditions, the inclination
of the craft from the horizontal would not exceed 8° in any direction
under all permitted cases of loading and uncontrolled passenger movements
as may occur. A calculation of the dynamic stability should be made
with respect to critical design conditions.
2.3.2 For guidance of the Administration, methods
relating to the verification of the stability of hydrofoil boats fitted
with surface piercing foils and fully submerged foils are outlined
in Appendix II.