Effective: 01.12.2002
Issue 5.
Rules made in accordance with the ISAF
One-Design Class Rules Standards
A0 Objective of these Rules 4
A1 One-Design Clause 4
A2 Abbreviations 4
A3 Authority 4
A4 Language 5
A5 Class Rules and their
Interpretations 5
B1 Administration of the Class 5
B2 International Class Fee / Plaque and the
Licensed Builder’s Plague 5
B3 Sail Numbers 6
B4
B5
B6 Change of Ownership 6
B7 Amendments to Class Rules 7
C1 Equipment 7
1
General 7
2
3
Optional 7
4
Limitations 8
5
Additional
Rules 8
C2 Buoyancy 8
C3 Flotation 8
C4 All-Up Weight 8
C5 Setting of Sails 8
C6 Crew 8
C7 Advertising 8
C8 Certificate 9
C9
C10 Additional Rules 9
D1
D2 Builders 10
D3
1
2
Dimensions 11
3
Weights 11
D4 Deck 11
D5
1
Bulkheads,
Thwarts 11
2
Buoyancy 11
D6 Additional Rules 11
E1
E2 Builders 12
E3 Dagger Board, Rudder Blade, Rudder Head
and Tiller 12
1
2
Dimensions 12
E4 Rudder Head 12
E5 Tiller and Tiller Extension 13
13
F1
F2
F3
1
2
Fittings 14
3
Dimensions 14
F4 Boom 14
1
2
Fittings 15
3
Dimensions 15
F5 Spinnaker Boom 15
F6 Standing Rigging 15
F7 Running Rigging and Fittings 15
1
2
Dimensions 15
F8 Additional Rules
G1
G2 Sailmakers 16
G3
1
Construction 17
2
Dimensions 17
G4 Headsails 17
G5 Spinnakers 17
G6 Identification
ZOO
The Zoom 8 was designed in 1991 by
.
A.0.1 The Zoom 8 is a Strict One-Design Dinghy. The
intention of these Rules is that the boats shall be as alike as possible in all
respects affecting performance in order that the true test, when raced, is
between crews and not boat or equipment.
A.1.1 Anything
not specifically permitted by these Class Rules is PROHIBITED.
A.2.1 ISAF International Sailing Federation
IZCA Zoom 8 International Class Association
NCA National Zoom8 Class Association
ICF International Class Fee
OAR Owner of All Rights to the Design and Brand
name
RRS International Yacht Racing Rules (Racing
Rules of Sailing)
LBP Licensed Builders Plaque
ERS Equipment Rules of Sailing
A.3.1 The authority of the Class is IZCA, which will cooperate with ISAF
in all matters concerning these Class Rules. All final ruling concerning these
Class Rules, the
A.3.2 Neither the ISAF, an
A.4 Language
A.4.1 The official language of the Class is English
and in case of dispute over a translation the English text shall govern.
A.4.2 The word “shall” is mandatory and the word
“may” is permissive.
A.5.1 Whenever in these Rules the words “Class
Rules” are used, they shall be taken as including the
A.5.2 In case of discrepancy between these Rules,
the
A.5.3 Any interpretation of Class Rules required at
an event may be made by an International Jury, constituted in accordance with RRS.
In this case, the jury shall consult the event chief measurer. Such
interpretation shall only be valid during the event, and the organising
authority shall, as soon as practical after the event, inform the ISAF and IZCA
of such an interpretation.
A.5.4 All measurements have a tolerance of ± 5 mm
unless otherwise stated in these Rules.
SECTION B - ORGANISATION
B.1.1 The
B1.2 In countries where there is no
B.2.1 The ICF shall be paid by the Licensed Builder
to ISAF who shall, after having received the ICF, provide the builder with the
ISAF plaque.
B.2.2 All dinghies shall to be equipped with a unique
LBP, provided by the OAR, stating the name of the builder and the
CE-certification or other needed safety organ in the country of production. No
dinghy not showing this plaque firmly attached to its cockpit may be measured
or accepted by an
B.3 Sail Numbers
B.3.1 The sail number shall be issued by the
B.3.2 The sail numbering is based on a national
sail numbering system starting from number 1. Alternatively, an owner may be
allotted a personal sail number by the
B.4.1 Fundamental measurement (measurement required
by the Class Rules) shall only be carried out at the Licensed Builder’s
premises by a measurer recognised by the
B.4.2 A measurer shall not measure any part owned,
designed, or built by him, or in which he is an interested party, or has a
vested interest, except where permitted by these Class Rules.
B.4.3 Each
B.4.4 If a measurer is in any doubt as to the
legality of any part he shall consult the
B.5.1 The owner shall present the
B.5.2 Upon receipt of a correctly completed
B.5.3 Notwithstanding anything contained herein,
the
B.5.4 The LBP, stated in B.2.3 shall be permanently
fixed, upon approval by the recognised measurer, on port side in the aft end of
the cockpit.
B.6.1. Change of ownership invalidates the
B.7 Amendments to Class Rules
B.7.1 Amendments to these Rules shall be approved
by each of:
a)
NCA
b)
IZCA
d) ISAF
who will have the final ruling
B.7.2 Amendments of these Rules shall be approved
by at least two thirds of the members in the NCA, replying in writing to the
IZCA in response to a postal or electronic ballot published by them. Only those
postal votes returned within two months from date of publication of the rule
change shall be presented to ISAF for a final ruling.
SECTION C – CONDITIONS FOR RACING
C.1.1 General
a) Only equipment endorsed in
accordance with these Class Rules shall be used.
b) Any safety equipment required by an
international, national or other governing authority for safety purposes may be
fitted or carried.
C.1.2
a) A towing line must be attached to
the bulls eye in the bow at all times when racing. The line shall of a floating
type and shall have a diameter of not less than 6 mm and length not less than 5
m unless otherwise prescribed by the Race Committee. The towing line shall have
a nominal braking strength of not less than 300 kg equal to 2940 N.
b) A shock cord arrangement of the type
and dead ends as supplied by the builder shall at all times while racing be
used in order to keep the dagger board in place when capsizing.
c) The mast shall at all times while
racing be fixed to the hull with the Cunningham in order to keep it in place if
capsizing.
d) The hiking straps shall at all times when racing be functional and fixed in both ends as
supplied by the builder.
e) A red protest flag shall be attached
between the deck and the aft side of the mast and a point on the bottom edge of
the boom in a distance not more 760 mm from the mast.
C.1.3 Optional
a) One compass is permitted mounted on
any part of the deck or in the cockpit provided that the hull cavity is not
pierced by anything other than the fasteners. The compass shall not be fitted
to the inspection ports.
b) No electronic equipment for
determination of speed, true course or position, or any alike
equipment, may be carried or added as a function to the compass.
c) Electronic timing devices are
allowed.
d) Wind indicators may be attached as
desired provided that the sail is not cut and the buoyancy of the hull and mast
are not impaired.
e) Clips, ties or bags to stow or
secure safety or other equipment may be used on the deck, at the inspection
ports, or in the cockpit.
f)
Non-slip
tape may be applied at the deck and in the cockpit.
g) The use of ropes, lines, plastic
flexible adhesive tape or similar is permitted to secure shackles, pins and
clips, to bind sheets, lines and rigging, except what is stated under
limitations.
h) The hiking straps may be substituted
with any type of non-stretch material and they may be padded.
i)
The
shock cord attachments to the hiking straps are free.
j)
The
outhaul line may be prolonged with a line going around the mast to enable
outhaul adjustment at all times.
k) The Cunningham may be run through a
double line fixed to the boom fitting to cease the force needed for tensioning
the luf.
l)
The
traveller adjustment line may have 1:1 or 1:2 ratio.
C.1.4 Limitations
a) Ropes, lines, flexible adhesive tape
or similar shall not be used to construct new fittings or modify the function
of the existing fittings.
b) In series of races no more than one
sail or item of equipment shall be used except when mentioned in the sailing
instructions or when a sail or item of equipment has been damaged beyond
repair. Such replacement may be made only with the approval of the Race
Committee.
C.1.5 Additional Rules
a) The rudder blade shall be maintained
in the full down i.e. vertical position except when exceptions to this rule is
prescribed by the Race Committee for racing in shallow waters.
b) All inspection port covers and the
drainage plug shall be in place and tight while racing.
C.2.1 All three buoyancy bags inside the hull shall
be filled with air at all times when racing.
C.3 Flotation
No restrictions.
C.4 All-Up Weight
C.4.1 The all-up weight of the dinghy in racing
condition, excluding all optional equipment, shall not be less than 48 kg.
C.5 Setting of Sails
C.5.1 The sail shall be set so that the highest
visible point of the sail at the head does not exceed the top of the mast.
C.6 Crew
C.6.1 The Zoom 8 shall be raced with either one or
two persons aboard.
C.7 Advertising
C.7.1 Advertising is permitted in accordance with
ISAF Regulation 26 as Category C.
C.8 Certificate
C.8.1 The dinghy shall have been granted an
C.8.2 Any dinghy owned by a
C.9
C.9.1 No person is permitted to race a Zoom 8 in
any fleet, inter-fleet, district or other sanctioned event unless at least one
member of the crew is a member of the NCA.
C.9.2 The NCA may issue a temporary membership to
such a sailor who is appointed a Wild Card (a dinghy free of charge for one
specific event) by the organisers of a national or international event.
C.9.3 If a sailor does not have a NCA in his own
country, his/her membership application will be appointed to the IZCA, who will
adopt the sailor as a temporary member until such a time when the NCA in the
country in question has been formed.
C.10 Additional Rules
C.10.1 See section 1 Appendix
C.10.2 One watertight inspection port not exceeding
152 mm internal diameter may be installed on the foredeck for access to the
hull cavity.
C.10.3 Cushions or similar which are attached to the
shell of the dinghy are prohibited.
C.10.4 Regarding clothing, R.R.S. shall apply except
that
a) Fabric weight jackets and water
pockets, compartments or containers in or attached to clothing or equipment are
not permitted.
b) The total weight of clothing and
equipment worn by a competitor, excluding footwear, shall not be capable of
exceeding 11,o kg when soaked with water and weighed
as provided in the R.R.S.
SECTION
D –
D.1
D.1.1 The hull and deck shall be joined and conform to the Class Rules in force at the time of fundamental measurement. Alternations or repairs shall be in accordance with the current Class Rules.
D.1.2 The fundamental measurement procedure is
presented in the Builders
D.1.3 If IZCA has forwarded Fundamental
D.1.4 The hull and deck shall be fundamentally
measured and measurer is to issue a
D.1.5 Repairs and preventive maintenance to the
hull, deck or any fittings and fixings may be carried out without violation of
these Rules provided such repairs are made in such a way that the essential
shape characteristics or function of the original are not affected.
D.2.1
D.2.2 The Licensed builder shall, at his own
expense, correct or replace any dinghy that does not comply with the Class
Rules as a result of an omission or error by the builder.
D.2.3 The Zoom 8 shall display a LBP obtained from
the OAR fixed in the rear port side of the cockpit as stated in B.2.3.
D.2.4 All dinghies shall be produced from moulds
taken from the
D.3
D.3.1
a)
The
hull and deck shall be built in accordance with the Builders
b)
Construction
shall be of approved glass reinforced polyester resin, GRP. Where distance
material is used, it shall be of Coremat-type or equal. The use of fibres other
than glass is prohibited. The use of epoxy or vinylester in the hull or deck is
prohibited.
c)
The
deck shall be assembled with the hull in an approved hull mould.
D.3.2 Dimensions
The hull and deck dimensions shall
be in accordance with the Appendix,
D.3.3 Weights
a)
The
complete Zoom 8 hull, including deck and fixed fittings shall be weighted. The
weight shall be minimum 38 kg.
b)
Corrector
weight of lead with a maximum weight of 4 kg may be permanently fixed to the
inside of the main bulkhead at the centreline above the centreboard case.
D.4 Deck
D.4.1 Rules as in D.3.
D.5
D.5.1 Additional
bulkheads and thwarts are not permitted.
D.5.2 Buoyancy
The hull and deck mouldings comprise
one large buoyancy compartment. No additional holes, but for a 5 mm breathing
hole placed in upper back part of the outer drum case and what is stated in
C.10.2 is permitted.
D.6 Additional
Rules
D.6.1 Polishing
and painting is permitted.
SECTION
E –
E.1
E.1.1 All hull appendages shall conform to the Class Rules in force at the time of fundamental measurement. Alternations or repairs shall be in accordance with the current Class Rules.
E.1.2 An
E.1.3
E.1.4 The rudder blade and the dagger board made of epoxy coated Abache or heavier wood shall carry an official sticker showing the Licensed Producers name and running number of the product.
E.1.5 Repairs and preventive maintenance to hull appendages or any fittings and fixings may be carried out without violation to these Rules provided such repairs are made in such a way that the essential shape characteristics or function of the original are not affected.
E.2 Builders
E.2.1 The OAR shall license
E.2.2 The Licensed builder shall, at his own expense, correct or replace any hull appendage that do not comply with the Class Rules as a result of an omission or error by the builder.
E.2.3 The builder of plywood dagger board and rudder blade is free.
E.3 Dagger Board and Rudder Blade
As the dagger board and rudder blade strength and bending abilities strongly affects the performance of the dinghy, all producers of the same in epoxy laminated wood have to be licensed by the OAR and approved by ISAF in order to guaranty equal bending and strength abilities. The measurement tolerances are intended to allow for necessary manufacturing tolerances and shall not be used to alter the design.
E.3.1
The dagger
board and rudder blade shall be manufactured of water resistant plywood or of
epoxy coated Abache or heavier wood with a thickness of 13 ± 1 mm in accordance
with the
E.3.2 Dimensions
The
dimensions shall be in accordance with the
E.4 Rudder Head
The rudder
head and the placing of its fittings and equipment shall conform to the
a)
The rudder head shall be of epoxy-laminated wood or of a composite type as provided by the Licensed Builder.
b) Additional Fittings
A line or pintle may be fitted to the rudder head to prevent the rudder blade to pivot from its desired position. (i.e. vertical and horizontal).
E.5 Tiller and Tiller
Extension
a)
The tiller shall be of epoxy-laminated wood or of a composite type as provided by the Licensed Builder.
b) The tiller has to be fixed to the rudder head in a sturdy manner.
c) The tiller extension is free.
SECTION F – RIG
F.1
F.1.1 A spar and its rigging shall conform to the Class Rules in force at the time of fundamental measurement. Alternation or repairs shall be made in accordance with the current Class Rules.
F.1.2
F.1.3 The rig dimensions,
the placing of fittings and equipment shall conform to the
F.2
F.2.1 A rig builder is any manufacturer licensed by the OAR and approved by ISAF to build and supply the Zoom 8 rig in accordance with the Zoom 8 Design Specifications.
F2.2 The IZCA
may, after consulting with the ISAF/
F 2.3 The Licensed rig builder shall at his own expense, correct or replace any rig items that do not comply with the Class Rules as a result of an omission or error by the builder.
F.3
a) The mast shall only be supplied by an OAR Licensed Builder.
b) The mast is a one-piece mast of sailboard type, specifically designed for the Zoom 8 with needed material strengthening for strength and correct bending curve.
c) Each produced mast shall be fitted with an engraved manufacturers identification code and/or a running serial number to be able to be recognised as a Zoom 8 Strict-One-Design mast.
F.3.1
The mast shall be of rolled GRP as manufactured by an OAR and ISAF Licensed Builder.
F.3.2 Fittings
a) The Boom fitting specially designed for the Zoom 8 dinghy has to be provided by a Licensed Builder.
b) To prevent abrasion at the deck flange and the mast foot, a tube or tape collar of uniform thickness not exceeding 1 mm may be placed around the entire circumference of the mast. The height shall not exceed 60 mm.
c) A disc of uniform thickness not exceeding 1 mm in thickness may be placed under the mast foot in the hull.
d) The mast shall be sealed to prevent water from entering into the mast when capsizing. The seal shall not, however, influence the bending properties of the mast.
F.3.3 Dimensions
a) As supplied by a Licensed Builder.
b) The mast shall be hollow, except what is stated in F.3.2.c.
F.4 Boom
A Licensed Builder shall supply the boom.
F.4.1
The boom shall be constructed of black anodised aluminium alloy .
F.4.2 Fittings
The length of
the mainsheet wire or line, fixed at the boom, shall not when tensioned by the
sheet get further at its deepest point between boom and upper side line than
100 mm. The mainsheet block shall be placed directly on the line or with a
shackle or a snap-hook. Centre of the block sheave may not be more than 230 mm
below lower edge of the boom. All fittings as stated in the
F.4.3 Dimensions
The boom shall have a uniform round section with an outer diameter of 38 ± 0,5 mm and a wall thickness of 2 ± 0,2 mm .
F.5 Spinnaker
Boom
No spinnaker or spinnaker boom is allowed.
F.6 Standing Rigging
No standing rigging is allowed.
F.7 Running Rigging and Fittings
a)
The running rigging, fittings
and the placing of fittings shall conform to the
b) Any sheets or lines supplied by the builder may be substituted with sheets or lines of the same standard diameter of any length or material except that:
i. each sheet or line shall be of one continuous length of uniform diameter but for the outhaul line as stated in C.1.3.i.
ii. Wire is permitted only for supporting the mainsheet single block with becket at the boom and the kicking strap, as supplied by the builder.
c) The blocks, swivel jammer or main sheet jammer, jamming blocks and blocks, cam cleats and the clam cleat may be replaced by any type of similar fitting of the same principal design and same standard dimension as supplied by the builder. Type of block bearings is not restricted.
d) The shackles may be replaced by other type of shackles or by quick-release hooks.
F.7.1
As supplied by the builder or of a similar kind.
F.7.2 Dimensions
a) The standard diameter of the main sheet is 8 - 10 mm.
b) The standard diameters of all other lines is 5 – 6 mm.
SECTION G – SAILS
G.1
G.1.1 The sail shall conform to the Class Rules in force at the time when it was first measured. Alternations or repairs shall be in accordance with the current Class Rules.
G.1.2 An
G.1.3 Sails shall be made and
measured in accordance with the ISAF Sail
G.1.4 Sails shall carry an official measurement stamp or sticker near the tack.
G.1.5 Substantially altered or repaired sails shall be re-measured and the measurer shall attach a new official measurement stamp or sticker showing the new date of measurement.
G.2 Sailmaker
G.2.1 A sailmaker is a manufacturer licensed by the OAR and accepted by ISAF to build and supply the Zoom 8 sail in accordance with the Zoom 8 Design Specifications.
G.2.2 All sails produced by a Licensed Sailmaker have to be cut using templates and / or computer based cutting programs for laser cutting provided by the OAR and no alternations to these are allowed.
G.2.3 All reinforcements produced by a Licensed Sailmaker for use in the Zoom 8 sail, both primary and secondary, have to be cut using templates and / or computer based cutting programs for laser cutting provided by the OAR and no alternations to these are allowed.
G.2.4 Primary reinforcements have to be cut using the Zoom 8 sailcloth specifically produced for the Zoom 8 sail and provided by the OAR.
G.2.5 The Licensed Sailmaker shall, at his own expense, correct or replace any sail that does not comply with the Class Rules as a result of an omission or error by the sailmaker.
G.3
The sail, battens and the placing, size and form of fittings
shall conform to the measurement Diagrams. The
G.3.1 Construction
a)
The construction shall be:
b) The body of the sail shall throughout consist of a specifically for the Zoom 8 dinghy produced woven ply of polyester provided by the OAR.
c) The sail shall have three batten pockets of even length.
d) The following is permitted: Stitching, gluing, tapes, corner eyes, cunningham eye, corner pulleys, one window, sailmaker label, royalty label, measurement stamp or button, tell tales.
G.3.2 Dimensions
a)
Dimensions according to the
b) Sail ply as stated in G.3.1.b. of 140 g/m˛ ± 10 g/m˛.
G.4 Headsails
No headsails are allowed
G.5 Spinnakers
No
spinnakers are allowed
G.6 Identification
G.6.1 The Class insignia and the sail numbers and letters shall be in accordance with the RRS except where varied herein.
G.6.2 The numbers shall be of the following minimum dimensions:
Height 230 mm
Space between adjoining numbers 40 mm
G.6.3 The Class insignia
shall conform to the dimensions and requirements as detailed in the
G.6.4 The Class insignia may be displayed on only starboard side of the sail, and when displayed on the port side show a mirror face of the insignia placed at same place as on the starboard side.
Effective: 01.12.2002
Issue 5.
SECTION 1 –
Appendix,
In the case
of a measurement dispute on the hull, spars, sails, dagger board and rudder
blade, rigging, type of fittings and equipment and the placing of same not
explicitly covered by these Rules,
A sample of 5 other dinghies shall
be taken and measured using identical techniques. The dimensions of the
disputed dinghy shall be equal to, or between the maximum and minimum
dimensions obtained from these 5 dinghies. If the dinghy in question is outside
these dimensions the matter, together with any relevant information, shall be
referred to the measurer recognised by the
All dimensions
shown in millimetre.
1.
If a protest is lodged against a yacht alleging that there has been
alternations or additions thereto not permitted by the Rules of the Class, and
the Race Committee, on investigation, is in doubt as to whether a violation of
the Rules has occurred, it shall measure the part of yacht subject to protest
in accordance with paragraph 2.
2. (a)
The
part of the hull on the yacht subject to protest shall be measured in
accordance with the measurement directions attached and the same part of not
less than five (5) other dinghies, chosen by the Race Committee as random
samples, shall be measured in the same manner. The Race Committee shall select,
if possible, Zoom 8 dinghies, which show no evidence of having been repaired or
altered.
The arithmetic mean of the
measurements of the dinghies chosen, as the sample shall be calculated, and the
protested dinghy shall be disqualified if the difference between the mean value
so determined and the measurement on the dinghy subject to protest shall exceed
the following values for the measurements indicated:
any point along the keel line (rocker) 4 mm
any other area of the hull 5
mm
2.
(b) Equipment
If any mast, boom, fitting, dagger
board or rudder blade is subject of a protest as to size, shape or location,
measurement thereof shall be governed by the drawings and tolerances set forth
in the
3.
See drawing “template and example of measuring”
4.
Turn the dinghy upside down.
Starting at the transom, measure out along the keel line and establish point A,
which will fall roughly athwart ship of point X, the area under protest.
Lay a straight edge across the
transom as shown in the sketch and measure out a distance along the vertical
surface of the gunwale and establish point B, which will fall approximately in
line with the measured point on the keel line (A) and the area under protest
(X). Distances shown are as example only.
See drawing “template and example of
measuring”
The centre line of the dinghy must
then be established at point A.
Place the centre of the measurement
template on point A, line up the vertical arms with points B and equalise
exactly the distance from the horizontal bar to the inside of the gunwale on
each side of the dinghy.
See drawing “template and example of
measuring”
This procedure should now be
repeated using all the distances established above and a similar reading
obtained for the distances from the hull to the horizontal cross bar on the
other five sample dinghies.
Example:
90
94
93
91
460
mm
Arithmetic
mean 460/5 92 mm
Difference 4
mm
This does not exceed the mean value
by more than 5 mm therefore protest is disallowed.
Turn the dinghy upside down.
Set up a taught string over the
centre line of the dinghy exactly 150 mm above the keel at the transom and 130
mm above the keel at 2360 mm from the transom.
Calculate arithmetic mean of the
measurements from five sample dinghies. Point under protest (X) should not
deviate by more than 4 mm.
See drawing “template and example of
measuring”