intact stability of any ship is the minimum stability requirement to be considered safe for sea going,you can read the full intact stability criteria for all vessel here
The angle of repose or, more precisely, the critical angle of repose,[1] of a granular material is the steepest angle of descent or dip of the slope relative to the horizontal plane when material on the slope face is on the verge of sliding. This angle is given by the number (0°–90°).
