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CLASS
RULES
PAPER TIGER ASSN CLASS RULES 010702.pdf
1-GENERAL
The
PAPER TIGER
catamaran is a one-design class. Boats shall
conform to the general requirements and outlines
shown on the plans except as modified by these
Class Rules.
In
accordance with the ISAF Equipment Rules of
Sailing, these Class Rules fall under the
definition of clause C.3.2 “Open Class Rules”
which state:
“Class rules where anything not specifically prohibited by the class
rules is permitted”
Interpretation
or clarification of the Class Rules shall be
requested in writing from the Chief Measurer.
Boats
that do not comply with the Class Rules shall be
liable for disqualification from class events, in
accordance with the ISAF Yacht Racing Rules.
For
the purpose of measurement, should the class rules
be silent on a measurement matter (including
measurement procedure), the ISAF measurement
procedures shall apply.
NOTE:
Details of fittings and method of construction on
the plans are typical only. Alternate fittings (eg
mast top pulley, mast base, mast spanner,
traveller track, etc.) may be used providing they
are not prohibited elsewhere in these Class Rules.
2-HULLS
1.
Hulls may be made of any material.
2.
Decks shall be straight in the athwartships
direction. All hull panels to be flat in section
profile allowing for natural
twist in hull material between frame sections.
3.
Hull length shall not exceed 4267mm excluding
gunwales measured parallel with the designed
waterline. This length shall be measured by
drawing a straight line which transits the top of
the main beam and a point 406mm above the keel at
the transom.
4.
Overall beam shall not exceed 2133mm excluding
gunwales.
5.
Gunwales (rubbing Strakes or Sheerguard)
a) Gunwales may be made of any resilient material.
b) Gunwales shall be mounted externally.
c) Maximum dimensions: Width: 25mm,
Height: 30mm.
d) Minimum dimensions: Width: 13mm,
Height: 18mm.
e) Maximum width between main and rear beams:
40mm.
f) Width measurements are to be taken from the
hull topsides.
g) Minimum radius at the bow: 14mm in plan view.
h) The underside of the gunwale may be flat,
convex, concave or tapered.
6.
Hull measurements shall be in accordance with the
plans and shall have a maximum tolerance of + or -
6mm on total width or depth. Maximum tolerance
shall be + or - 12mm on bow profile. Maximum
radius on keel and chine shall be 6mm except
forward of station 2 on the chines.
7.
Measuring templates will be used at stations 2, 6,
10 and 14 and on bow profile.
8.
Hulls, which do not measure, may be given
dispensation under the conditions set out in BY-LAW
7.
3-BEAMS AND TRAMPOLINE
1.
Main and rear beams to be 50mm x 50mm + or - 1.0mm
x 3.2mm + or - 0.3mm aluminium alloy square tube.
2.
All beams must be mounted flush on the deck.
3.
“L” brackets may be used to attach the beams at
the inner attachment points of each hull only.
Such “L” brackets shall have maximum
dimensions of 50mm x 50mm x 50mm, and be
constructed of aluminium alloy of a minimum of 4mm
and maximum of 6mm in thickness.
4.
Rear beam to be 686mm and main beam to be 2438mm
each + or - 12mm to centrelines from transom at
keel, measured parallel to waterline at deck
level. Beam ends shall be angled at 45 degrees +
or - 4 degrees.
5.
A
trampoline support of aluminium section shall be
securely fixed along the centreline of the boat.
6.
Trampoline material and attachment method to be
optional.
7.
Jumper strap shall be made from either stainless
steel or aluminium alloy flat section and be
within the following size limits.
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Minimum
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Maximum
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Stainless steel
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Width
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25mm
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50mm
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Thick
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3mm
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4mm
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Aluminium alloy
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Width
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30mm
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50mm
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Thick
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4mm
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6mm
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In
addition to the above, aluminium alloy jumper
straps shall have a minimum cross section of 160
square mm.
All
sharp edges of jumper strap to be removed or
protected (eg with electrical tape).
No
part of the jumper strap shall extend beyond the
inner gunwale.
8.
Straight traveller tracks may be used instead of
the hawse wire shown on the plans. Traveller
length shall not exceed the length of the top
surface of the rear beam.
9.
Use of a single aluminium alloy extrusion that
incorporates the rear beam, the traveller track,
and a trampoline attachment track is permitted as
long as it meets all other associated class rules.
4-WEIGHT
1.
Minimum hull weight to be 50kg with all fixed
fittings weighed in dry conditions excluding
rudderstocks, mainsheet, but including inspection
port covers and fixed compasses.
2.
For the purposes of weighing, each boat shall be
freely suspended in a sling from an approved scale
or spring balance.
3.
Weighing of each end separately is not allowed.
4.
Allowance shall be made for the weight of the
slings.
5.
Any weight required to bring a boat up to the
minimum weight shall be fixed inside the ends of
the beams as follows:
(a)
Boats
weighing more than 47.5kg - one half of weight in
each end of main beam
(b)
Boats
weighing 47.5kg or less - one quarter of weight in
each end of main and rear beams.
5-CHAINPLATES
1.
Chainplates must be positioned on the outer side of
each hull.
2.
No hole in the rear chainplate shall be within
410mm of the centreline of the main beam.
3.
No hole in the front chainplate shall be within
1160mm of the centreline of the main beam
6-CENTRECASES
1.
Centrecases: rear of slot to be 1390mm + or - 15mm
along the keel from outside of transom.
2.
Maximum dimensions of centrecase slot measured at
deck level shall be 25mm x 310mm and at keel level
25mm x 305mm. Recesses for centreboard stops are
permitted providing they do not exceed 40mm in
depth from deck level.
3.
Centrecase must not be fitted with any device or
means for angling centreboard to port or
starboard.
7-CENTREBOARDS AND
RUDDERS
1.
No restriction on centreboards and rudders shall
apply other than maximum centrecase dimensions as
in rule 6(2) above.
2.
The
centreplane of each hull, its centreboard case and
its rudderstocks (in the fore and aft position)
shall coincide.
8-SPARS
1.
Mast and
boom shall be of a parallel aluminium alloy extrusion of minimum
size 50mm x 64mm, maximum size 62mm x 80mm and minimum weight of
0.95kg/m. Tapering of mast extrusion is prohibited but internal
stiffening is allowed.
2.
Bolt rope
track must be continuous except for below the gooseneck and for bolt
rope entries. Separate boltrope tracks shall be considered part of
the extrusion for measurement purposes.
3.
Length of
mast with top and bottom fittings not to exceed 6780mm from top of
main beam to top of mast fitting.
4.
Boom shall
not exceed 2290mm in length including gooseneck plug.
5.
Hounds
attached to mast at 2590mm and 5180mm + or - 40mm measured from top
of beam to shackle pin position. Shackle pin position shall be no
greater than 25mm from the mast extrusion surface.
6.
Mast must be
sealed.
7.
Boom block
hangers - dimensions on plans are advisory only. There is no
restriction on exact location, but block locations shall not be
alterable while racing.
8.
Downhaul
control fittings shall be mounted on the mast and/or the spanner.
9.
The boom
vang shall be connected to one point only on the boom and may be
fixed to a saddle or the end of a spanner attached at or near the
base of the mast. Such spanner shall have a maximum length of 250mm
measured from the centre of the mast heel point to the point of vang
attachment. Movable spanners shall be measured when positioned at an
angle of 45 degrees from the mast.
10.
No connection other than those mentioned in 8 and 9 shall be
made between the mast and the boom.
11.
Devices to specifically control mast rotation are prohibited.
12.
Lever fittings to give greater boom vang purchase are
permitted but must comply with items 9, 10 and 11 above.
13.
Outhaul control fittings shall be located on or within the
boom only.
14.
The tails of control lines may be lead to positions of
convenience and the slack taken up as long as the primary control
load is taken by fittings positioned in accordance with the relevant
class rule.
9-RIGGING
1.
The rigging
to be in accordance with the plans except configuration of the lower
forestays is optional. The lower forestays may be adjusted while
racing. Rigging dimensions quoted are advisory.
10-SAIL
1.
To be measured in accordance with the ISAF
measurement procedures, to meet the following restrictions and table
of dimensions as represented by the drawing.
Note: Sail measurement
dimensions and restrictions outlined herein supersede those on sheet
five of the plans when in conflict
2.
Leech measurement is taken in a straight line from
head measuring point to clew measuring point.
3.
7 full length battens only.
4.
There is no restriction on batten material.
5.
Top and bottom batten positions are restricted. The
dimensions restricting their location is measured to the inside edge
of the stitching that form the bottom of the batten pocket.
6.
Leech profile shall be a fair curve.
7.
Leech cord can be internal, external or
non-existent.
8.
Leech cords shall be adjustable on the sail or boom
only, and control line tails not lead to another place.
9.
Sail Numbers shall be positioned in accordance with
ISAF rules.
10.
Reef points may be fitted if desirable.
11.
The sail measurement dimensions are as per the
following table and the drawing.
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Sail
measurement position
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Dimensionsisions
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Maximum
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Minimum
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Area
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9.29m2
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Luff
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6,096mm
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Leech
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6,325mm
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Top
width
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125mm
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Upper
leech point
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762mm
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Upper
width
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570mm
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Three
quarter width
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1,080mm
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Half
width
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1,695mm
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Quarter
width
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2,030mm
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Foot
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2,134mm
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Head
point to top batten @ luff
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940mm+/-25mm
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Head
point to top batten @ leach
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750mm+/-25mm
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Tack
point to bottom batten @ luff
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356mm
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Clew
point to bottom batten @ Leech
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270mm
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Tack
reef point
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750mm
up luff
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Clew
reef point
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800mm
up leech
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11-RACING
1.
The craft
may be raced single-handed or with a crew but the number must remain
constant throughout any sanctioned event.
2.
Boats shall
comply with the safety regulations of the National Yachting
Authority of their own country.
3.
At
sanctioned events, only in the event of major damage can a mast, a
sail, a hull assembly, a single hull, a main beam or a rear beam be
changed and such change shall have the approval of the sailing
committee.
4.
Only fully
paid members of the Paper Tiger Association shall be eligible to
race in sanctioned events.
12-THE FOLLOWING ARE
PROHIBITED
1.
Any device for adjustment of the bend in the mast
while racing except for lower forestay, mainsheet system, downhaul
and boom vang.
2.
Trapeze or sliding seat.
3.
Pocket luff or loose foot sails.
4.
Curved travellers
5.
Fairing of streamlining of beams or masts.
6.
Downhaul adjustment using drum winches, geared
winches or levers.
7.
Any device for altering batten tensions, excluding
leech cords, while racing.
8.
Electronic or mechanical devices for measuring
speed of wind or yacht.
13-AMENDMENTS
1. Amendments
to these Rules shall be by at least two thirds majority of all
ballot papers returned by financial Paper Tiger Catamaran
Association members.
2. A
ballot paper may be handed out or sent by mail, fax or electronic
media to all members. Only
one vote per member shall be returned in the allowed time.
3. A
ballot paper must contain at least two arguments for and against the
proposed change.
4. A
maximum of sixty days from date of posting the ballot paper must be
allowed for return mail.
5. All
ballot papers must first be reviewed and approved by all national
measurers before being sent to members.
6. Any
approved rule change shall apply from the first day of the next July
or such date as may be determined by the World Council.
7. This By-Law comes into force on the 1st of
November 1999. |
