|
Building
the
boat,
Chapter 3: The keel
This
page
shows:
The keel
foil
The
keel foil is made out of a massive block
of good oak wood. The surface
is
planed so that a router can be used to
prepare the profile.
Before
the 16
timbers of best oak wood are cut out of
the planks, the whole trunk has
to be checked: Which parts are clean,
i.e. have no knotholes?
The
profile is made using the router.
Afterwards the steps a planed and
sanded.
The
shape
of the keel is almost
ready.
The
shape
of all parts of the keel has to be
checked an precisely corrected.
Shaping the
keel is finished. Now the
"wing" will be glassed and
coloured to
protect it against uv-attack.
The
backbone/beam
The
beam
is made out of several parts:
The middle part is made out of
two
oak planks of 15cm width.
The
beam
(middle part) before being
shaped in the way the shown in
the next
pictures. The beam has an
overall thickness of 3cm.
Left: The lower part of the beam
is shaped. Right: The beam near
the
bow: A rope is used to
bring it in the right shape wich
is
derived
from the drawings.
Detail of the beam: The lines
indicate the position of a
bulkhead.
The
beam:
The middle part is 27cm width,
at the bow 10cm, at the transom
15cm. The overall thickness is
3cm.
The keel has the shape of an
I-beam. Due to this complex
shape the
whole boat gains a better
strength.
The bow
The inner part of the bow is made
of an oak timber. To provide good
connection with the back bone
(beam), a special part is made out
of
eight thin layers of oak, shaped
exactly along bow and backbone.
A
special part out
of eight thin layers of oak wood
is shaped along backbone and
bow. It
is covered with plastic foil to
prevent it from being glued
against the
bow or the backbone. Thus, it
can be removed and sanded before
finally
being glued.
The afore mentioned part is
sanded and glued against the
keel and the
bow.
The
bow
and bulkead A. Bulkhead A is
closed now for security
reasons. In
case of a collision the
water may remain in the fore
part of the boat.
The bow is reinforced by two
pieces of wood. They will be
shaped in a
way to fit to the hull.
The
bow and the stringers on
both sides are shown. The
wooden timbers for
reinforcement of the bow
have their final
shape, incorporating
the ends of the stringers.
The
keel box
The
picture shows some details
of the keel box.
Completing
the keel box:
Left: One
side oft the box,
covered with glass and
resin. The other side of the
box and all other
parts are already fixed.
Before being brushed with
resin, it must be
sanded to provide good
bonding.
Right: The box is completed
now. For the necessity of
the timbers, see
the next picture.
To provide sufficient
pressure, screws are used
to widen the two
timbers.
|
|