boats. However, accurate computer- generated shapes lead to much wider use of the method.
Many
builders in aluminium still use a "traditional" method of building. This
runs something like this:
-loft
the hull from the lines drawing and offsets table. -build
the frames and jig them in position, plumb, square and level. -add
longitudinals and fair everything up. -cut
the plating by lofting, templating or marking on the job. -weld
up. {For
round bottom craft, this is still the required procedure. }
For
chine boats of suitable design, the developed plate process is much simpler:
-copy
all templated shapes and fit-up marks to your plate stock. -cut
out the shapes. .-assemble
and tack-up skin plates for basic shape. -insert
your pre-cut frames and stringers on their marks. -weld
up. Since
all the shapes have been lofted by the computer, the builder needs only
these skills: -copy
shapes to the alloy sheet. -cut
on the marks. -fit
on the marks. -weld
up.
The
same process applies to all boats designed for this method. It is exactly
the same as kit -
lofting is eliminated. -square,
plumb and level are not required. -the
construction is self-jigging. -hull
plates are pre-cut on the floor. For
the builder, the advantages are: -a
quality job with lower skill levels. -superb
fit-up for better welding and a fairer finish. -faster
construction time. -a
saving in material, since all parts are cut at the start. -confidence
in costing; the process is the same for all the boats. As
many builders have discovered, this process gives them full benefit
of CAD / CAM without being This
building method is also known as "plate first" construction, "frameless
construction"