What is Waterline Radius and DS in the Cross Curves table?
The Waterline Radius is the distance measured perpendicular to the waterplane, to a point on the baseline (x-axis) midway between the Aft and Forward Perpendiculars (AP and FP). Waterline radius is used instead draft, as the latter can become very large for large angles of heel, whereas the WL radius is always a reasonable number. DS stands for Dynamic Stability and is the area in m-radians under the GZ (or KN) curve up to the particular angle of heel.
