2
The hollow keel is glassed to the inside of the hull. Ring
beam stiffening is added at the front and centre of the
cockpit together with the base for the mast step. The forward
beam will take the loads of the shrouds, the central beam also
has a small keel floor added at its base to help take the side
loads of the keel. A similar smaller keel floor has been added
towards the aft end of the keel. Areas of high stress have woven
flax cloth added to the epoxy fillets for extra strength.3
The mast gate, rudder
pedals, control cleat
console and the all-important
polystyrene foam buoyancy
are added prior to fitting the ply deck. Class rules require the
boat to be able to support 35kg when completely swamped.
5
The cockpit coaming
is laminated out of
thinly sliced timber veneers
over a temporary mould
before being glued into the
cockpit aperture. Spring
clamps hold it in place
while the adhesive sets.
4
A one-piece 4mm ply deck is added and covered with a
layer of 160gsm woven cloth/epoxy.1
The remainder
of the
bulkheads and the
rudder tube can now
be added and epoxy
filleted and
laminated in place.
BUILD A 2.4MR CLASS RACER AT HOME
The International 2.4mR Class is one of the several metre
boat classes running up to the ex-America’s Cup 12mRs.
All metre boats measure to a formula, which in our case
comes out at 2.4.
Popular around the world,
it attracts sailors of all ages
including past Olympic
champions. Many come from
the OK, Finn and Dragon
classes looking for the close
racing the 2.4mR boats offer.
The class is fully integrated
and welcomes sailors of
all abilities.
For more details visit
http://www.inter24metre.org and
http://www.ukassociation2-4mr.co.ukThe International 2.4mR Class
Interior fitout