Section 3(ii) in The Merchant Shipping (Equivalent Arrangements For Carriage Of Grain) Order, 1977
(ii)in the statical stability diagram, the net or residual area between the heeling arm curve and the righting arm curve up to the angle of heel of maximum difference between the ordinates of the two curves, or 40 degrees or the angle of flooding.* whichever is the least, should in all conditions of loading, be not less than 0.075 metreradians; and
