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Graham Radford Yacht Design
RADFORD Sprint - DESIGN #22
RACING YACHT
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[ ...before "Sprint" ... there was "Race"
]
The
SPRINT is a light displacement harbour racing yacht with a long waterline,
narrow beam, 2.4m fixed bulb keel or 2.6m lifting bulb keel, spade rudder and a
large fractional rig. It is
designed for fast, fun harbour racing … from non-spinnaker twilight and
midweek races to the more serious weekend racing.
“Sprint
IV”
Manly Yacht Club,
|
L.O.A. |
10.83m |
35' 6" |
|
L.W.L. |
10.65m |
34'11" |
|
BEAM |
2.83m |
9' 3" |
|
DRAFT |
2.40m |
7' 10 1/2" |
|
DSPL |
2,650kg |
5,830lb |
|
SAIL AREA |
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40.30sq m |
434sq ft |
|
Jib |
31.50sq m |
339sq ft |
The
first “Sprints” launched had double spreader rigs with overlapping
genoas with the option of symmetrical or asymmetrical spinnakers. There was a retractable centreline pole
for the asymmetrical spinnakers.
“Trim” –
The
new rig has a larger main & foretriangle and non-overlapping
headsails. The option of
symmetrical or asymmetrical spinnakers remains … depending on the sailing
areas and conditions. Symmetrical
spinnakers are probably, on average, a better option in areas such as
The
cockpit is a simple trench. Various
approaches have been used when setting up the deck gear. “Valiant VII” has most
controls in a console back at the mainsheet trimmer. This requires numerous tackle systems
below deck for backstay, Cunningham, outhaul, vang and even the jib halyard
tension.
“Sprint
IV” has a simpler, more conventional layout with all control lines except
the backstay operated at deck winches adjacent to the companionway. There are four cockpit lockers for
control lines and deck gear stowage.
In
way of the traveller the side decks are angled inboard to give comfortable
sitting positions for the mainsheet trimmer and helmsman.
The
outboard and fuel tank are located in a locker aft of the cockpit under the
tiller. The outboard bracket pivots
to raise and lower the short shaft 8HP outboard. The hull “door” slides
athwartships to allow the motor to be lowered for use.
The
interior is very simple with quarter berth / stowage areas, settees with seat
back lockers for stowing lifejackets, safety gear and the other odds & ends
needed for harbour racing. Headroom
is limited to sitting headroom as dictated by the harbour racing this yacht is
designed for.
The
construction is GRP / foam sandwich using quadraxial & biaxial E-glass on a
20mm foam core with floors, frames and longitudinals for added strength. There is a heavy single skin laminate in
way of the keel and maststep. The
2.4m fixed keel foil is constructed from 2205 duplex S.S. and is attached to
the hull with 25mm 2205 S.S. keel bolts.
The rudder has a 2205 S.S. post and a GRP / foam blade.
Larger photos in the photo section of the “Sprint”
page….
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