To improve the fairness of the hull, now would be a good time to adjust the stiffness of the surface. The stiffness of a surface can be controlled independently in the transverse and longitudinal directions.
The stiffness is analogous to the stiffness of the wooden battens used in traditional naval architecture. This helps you control how fair the surface is, and how much shape can be put into the surface. A more flexible surface will allow more shape, but may be less fair. A stiffer surface will help ensure fairness but will not allow you to put so much shape into the surface.
In this case we wish to make the design fairer in the longitudinal direction.
· Select Properties from the Surfaces menu and choose Default from the sub-menu
The Properties dialog box for this surface will appear.
· Choose 4 from the Longitudinal Stiffness menu
· Click OK
Note
You can only set the surface stiffness in longitudinal direction to 4 if you have at least 4 control point columns on that surface. See the Surface Stiffness section on page 95 for more information.
The resulting shape and net will be as shown below.
The sheer line plan may now be redefined by modifying the position of the control points. Similarly, in the Profile window, the sheer line and centreline control points may be repositioned.
Next: Removing Control Points