The area under GZ curve should not be less than 0.08m-r up to an angle of heel of 40 degrees or angle of flooding (angle at which the lower edges of any openings in the hull, superstructures or deck houses, being openings which cannot be closed water tight are immersed) whichever is lower. | |
The righting lever GZ shall be at least 0.25m at an angle of heal equal to or greater than 30 degrees. | |
The maximum righting lever shall occur at an angle of heel of not less than 30 degrees. | |
The initial transverse metacentric height (GM) shall not be less than 0.05m. | |
At all times during the voyage the GM should be positive after correcting FSC for the tanks, absorption of water by deck cargo, ice accretion on the exposed surfaces. |