Cross Curves

In order to produce cross curves of static righting levers, you can select the Form Calculations - Cross Curves icon. Cross curves can be calculated for the mainhull for either moulded or extreme drafts, for a given trim and assumed VCG, and over a range of drafts and heel angles. These results are then presented in both graphical form and in a KN table form. The righting levers are calculated from a given reference point which can be altered to be either the true centre of gravity (giving GZ) or the baseline (giving KN) or some other position (giving SZ). Either a free or a fixed trim condition can be specified.

This function can also be used in order to show immersion curves for deck edge points, and both protected and un-protected openings.

An Interpolation table, relating heel and draft, or displacement, data for the specified trim, is also automatically produced. Interpolation between the given heel angles is not possible.