Splines are still used in wooden boat
building, since most boats are drawn out full size or "lofted
" before construction begins. The most common type of spline used is a batten
, which is simply a very long strip of wood. The mechanical splines used by draftsmen are employed only for particularly tight curves that would break a batten.
During the construction of very large boats, large battens are used to make sure that all of the shapes being constructed are "fair
", that is, without any unwanted bumps or depressions.