Class Rules

These Class Rules were automatically translated from the paperback class rules and owners manual that came with the boat.
Apparently, the Omega 30 was designed as a One-Design Class, so strict regulations applied.

As to my knowledge, there are no class races being carried out any more, but the rules may still provide hints e.g. on the measurements of the sails.

Table of Contents

1 Purpose of the Rules

1.1

The Omega 30 is a one-design class. The boat is designed for family and long-distance purposes, but also to participate in course, offshore, and ocean racing.

1.2

The one-design rule shall ensure that boats and equipment are so similar that racing in this class becomes a test of the crew’s sailing skill.

2 Relations between the Class Association, the Swedish Sailing Federation, the Manufacturer and Individual Owners

2.1 Governing Bodies and Rules

2.1.1

The governing body for the class is the class association.

2.1.2

Class rules and amendments thereto must be approved by the class association and ratified by the Swedish Sailing Federation (SSF).

2.1.3

Amendment proposals from the manufacturer affecting the specifications listed below (section 3) must be submitted to the class association and SSF for approval before implementation.

2.1.4

The manufacturer’s molds for hull, deck, keel, and rudder must be made from plugs approved by the class association. Once completed, the manufacturer’s molds may not be altered without class association approval.

2.1.5

The construction form shall be checked according to the applicable drawings. For the finished hull, tolerances are allowed for minor manufacturing defects and form changes due to age. Intentional variations within these tolerances are not permitted.

2.1.6

The class association may order measurement control of hull, deck, keel, and rudder.

2.1.7

Interpretation of these rules shall be made by SSF after consultation with the class association.

2.2 Manufacturing Certificate, Class Certificate, and Sail Number

2.2.1

A boat meeting the requirements of these class rules according to section 3 – Standard Boat Specifications – shall receive a manufacturing certificate and class rule from the manufacturer. To obtain a class certificate, the owner shall sign the certificate confirming that the boat, its sails, equipment, and interior comply with the class rules. The certificate shall then be sent to the class association, which shall issue the class certificate. Normally, no individual measurement of the boat is conducted.

2.2.2

For a boat that has undergone extensive repairs, re-measurement to verify compliance with the class rules shall be conducted by an SSF-approved measurer.

2.2.3

The boat’s sail number is issued by the manufacturer.

2.3 Owner Responsibilities

2.3.1

The owner shall ensure that the principle of uniform construction is not deviated from and shall not do anything that could cause this principle to be violated.

2.3.2

A boat may not race in the one-design class without a valid class certificate issued in the owner’s name.

2.3.3

Change of ownership renders the class certificate invalid. The class association may issue a new certificate without measuring the boat, provided the declaration in accordance with 2.2.1 is given.

2.4 Control Measurement

2.4.1

Owners of boats with class certificates are obliged to allow the boat to be control-measured at any time according to the determination of the class association or racing committee.

3 Standard Boat Specifications

3.1 Hull and Deck

3.1.1

Hull and deck shall be manufactured from GRP.

3.2 Keel

3.2.1

The ballast keel shall be made of cast iron and bolted to the hull. Weight shall be 1,330 kg ± 15 kg. Manufacturing according to drawing specifications.

3.3 Rudder

3.3.1

The rudder shall be manufactured according to drawing specifications.

3.4 Interior Module and Reinforcements

3.4.1

The interior module and reinforcements shall be manufactured and installed according to drawing specifications.

3.5 Standard Interior

3.5.1

The standard interior delivered with the boat shall be installed in accordance with drawing specifications and manufacturer instructions.

3.6 Weight and Trim

3.6.1

Assembled hull, deck, interior module, wooden bulkheads, and reinforcements according to 3.1–3.5 shall weigh 1,210 kg ± 70 kg.

3.6.2

A standard-equipped boat with engine and complete interior shall weigh a minimum of 3,250 kg fully ready to sail.

3.6.3

A standard-equipped boat in racing trim, i.e., with equipment prescribed in this rule and with empty tanks, shall have the following freeboard:

  • Freeboard at bow max 1,075 mm (measured from the foremost point of the hull to the waterline).
  • Freeboard at stern max 90 mm (measured from the rearmost point of the hull to the waterline).

3.7 Deck Equipment

3.7.1

Deck equipment in standard configuration shall be dimensioned and installed in accordance with drawings unless otherwise stated in the class rules.

3.8 Engine and Propeller Installation

3.8.1

The engine’s placement and arrangement with through-propeller shaft are shown in drawing specifications. Engine service weight shall be at least 70 kg. A heavier engine than standard is allowed. The boat is standard-equipped with a folding propeller with a diameter of 38 cm. Only a propeller with higher flow resistance than this may replace the standard propeller.

3.9 Mast and Rig

3.9.1

The mast is continuous, and the mast foot shall be placed on the designated beam along the boat’s centerline. Mast penetration on deck shall be of standard type. Nothing on the deck or in the boat’s interior may be changed from standard configuration to affect mast position or trim.

3.9.2

The forestay shall meet the deck (J-measure) max 3,500 mm for the mast’s leading edge in its rearmost position in the deck ring. The forestay shall be mounted in the designated recess in the deck and attached in a standard-model fitting.

3.9.3

The mast shall be made of light metal with a minimum sectional weight of 3.4 kg per meter. The mast cross-section shall be uniform along its entire length and have at least the following dimensions: Length 155 mm, Width 104 mm. Only standard mast is allowed.

3.9.4

The mast must not be permanently bent.

3.9.5

Spreaders, fittings, standing and running rig, and mast fittings shall be dimensioned and placed according to drawings. The standing rigging shall be made of 19-strand stainless steel wire with the following dimensions: Upper shroud 6 mm, lower shroud 6 mm, forestay 6 mm, backstay 4 mm.

3.9.6

Coatings on the mast that affect release or alter friction are not allowed. The mast shall not be altered from standard configuration regarding fittings or design.

3.9.7

The mast shall be fitted with two bands of a color contrasting with the mast. The bands shall have a width of at least 20 mm. The lower band’s top edge shall be 1,100 ± 10 mm above deck at the mast ring, the upper band’s bottom edge no more than 11,500 mm above the upper edge of the lower band.

3.9.8

The spinnaker pole may be hoisted no higher than 2,700 mm above deck.

3.10 Boom

3.10.1

The boom shall be made of light metal with a permanent boom foot and shall be of standard type.

3.10.2

The boom must not be permanently bent.

3.10.3

The boom shall be fitted with a band of color contrasting with the boom. The band shall have a width of at least 20 mm with its forward edge no more than 4,150 mm from the aft edge of the mast.

3.11 Spinnaker Pole

3.11.1

The spinnaker pole length is measured when mounted in its mast fitting, pointing straight forward, extended to its outermost point from the centerline at the mast leading edge to the spinnaker pole’s outermost point. The length shall not exceed 3,500 mm.

4 Sails

4.1 General

4.1.1

Where nothing else is stated, the IYRU rules and instructions for sails and sail measurement apply.

4.1.2

Reinforcements according to IYRU regulations, i.e., size + 3% of the luff length (standing leech on spinnaker). Deviations from IYRU: the radius is measured from the sail’s aft edge where the perpendicular intersects. For the jib, the perpendicular intersects with the clewboard’s outer edge.

4.1.3

Mainsail, jib, heavy-weather jib, and spinnaker shall be made of woven cloth (mylar or similar is not allowed).

4.1.4

Sails shall be control-measured and stamped by a measurer approved by the class association or SSF.

4.1.5

Only a sail set consisting of one mainsail, one spinnaker, one jib, one heavy-weather jib, and one light-wind sail (reacher) may be onboard during racing. For long-distance or ocean racing, according to the class association, a storm jib in accordance with IOR and a spare spinnaker may be carried. This shall be stated in the notice of race.

4.1.6

Only one sail set may be shown for measurement and used in a series of races, and no other sails may be used unless expressly permitted by the race committee.

4.2 Mainsail

4.2.1

Sailcloth weight in the mainsail shall be at least 310 g (7.25 oz).

4.2.2

Length of luff and foot is not measured. Stretch of the leech is limited by the bands on mast and boom according to 3.9.7 and 3.10.4.

4.2.3

Distance between the midpoint of the leech and the nearest point on the mast luff shall be max 2,500 mm. The measurement is to the forward edge of the leech rope.

4.2.4

The leech shall follow a smooth curve. Concavity at the measurement station shall be bridged. The top batten stiffening shall be max 135 mm. Its outermost point shall not exceed 150 mm from the forward edge of the leech rope.

4.2.5

The mainsail top is defined according to the drawing.

4.2.6

The midpoint of the leech is obtained by folding the top against the clew.

4.2.7

Leech length from top to clew shall not exceed 12,150 mm.

4.2.8

There shall be 4 battens in the mainsail. These shall divide the leech into five sections, each with a length of 2,420 mm ± 100 mm. The three lower battens shall be max 930 mm, and the upper batten shall be max 700 mm long.

4.2.9

The mainsail shall be equipped with at least two reefs. The lower reef shall have both corners at least 1,500 mm vertically above the boom foot, and the upper reef shall have both corners at least 3,000 mm vertically above the boom foot.

4.2.10

Cars available on the market shall be used in the mast luff.

4.2.11

Cunningham hole and trim reef are allowed.

4.2.12

Windows in the mainsail are not allowed.

4.2.13

Loose-footed mainsail is not allowed.

4.2.14

Reinforcements see 4.1.2.

4.3 Jib

4.3.1

Sailcloth weight shall be at least 310 g (7.25 oz).

4.3.2

The jib shall be sheeted in the self-tacking track or in [……….???] with the following dimensions:

  • Luff (T) max 11,000 mm
  • Leech (AL) max 10,150 mm
  • Foot (UL) max 3,300 mm
  • Distance from the sail’s highest point to the foot midpoint shall not exceed 10,850 mm
  • Sail width measured perpendicular to the luff at 100 mm from the highest point along the leech shall not exceed 100 mm. Defined in drawing.
  • Distance between the leech midpoint (measured 5,500 mm from sail top) and nearest point on the luff shall be max 1,500 mm
  • Clew may have a stiffening (clewboard) max 300 mm length and 60 mm width
  • Sheeting shall be from the clewboard if applicable

4.3.3

The leech shall form a smooth curve. Concavity at the measurement station shall be bridged.

4.3.4

The jib may have three battens with a max length of 300 mm. Battens shall divide the leech into equal parts with a tolerance of 100 mm.

4.3.5

Wire up to 4 mm is allowed in the luff.

4.3.6

Reefing and Cunningham are not allowed.

4.3.7

Reinforcements see 4.1.2.

4.4 Heavy-Weather Jib

4.4.1

The heavy-weather jib shall be sheeted like the jib and have the following dimensions:

  • Luff (T) max 8,100 mm
  • Leech (AL) max 7,000 mm
  • Foot (UL) max 2,800 mm
  • Clewboard is not allowed

4.4.2

Sailcloth weight shall be at least 310 g (7.25 oz).

4.4.3

The heavy-weather jib may have two battens with a maximum length of 250 mm. The battens shall divide the leech into equal parts with a tolerance of max 100 mm.

4.4.4

Wire luff is allowed. Diameter 4 mm.

4.4.5

Reinforcements see 4.1.2.

4.5 Reacher (Light-Wind Sail)

4.5.1

Sailcloth weight shall be max 107 g (2.5 oz). The sail may be made of any cloth.

4.5.2

The reacher shall be sheeted via a block on the toerail and have the following dimensions:

  • Luff (T) max 11,000 mm
  • Leech (AL) max 10,000 mm
  • Perpendicular (LP) max 5,750 mm
  • Longest distance between luff midpoint and foot midpoint is 5,500 mm
  • This measurement shall not exceed 55% of the leech

4.5.3

Reinforcements see 4.1.2.

4.6 Common Provisions for Jibs

4.6.1

Jibs shall be attached to the forestay with normal metal hanks or similar plastic devices.

4.6.2

Jib luff shall not encircle the forestay.

4.6.3

Forestay profiles are not allowed.

4.7 Spinnaker

4.7.1

Sailcloth weight shall be at least 32 g (0.75 oz).

4.7.2

The spinnaker shall have the following dimensions:

  • Luff (SL) max 11,000 mm, min 10,850 mm
  • Maximum width (SMW) 7,000 mm
  • Width at half SL min 6,800 mm
  • Foot (SF) max 6,300 mm

4.7.3

Measurement instruction: spinnaker width measured with sail weighted along a line from mid-foot to top. Width measurements shall be checked from clew to half SL.

4.7.4

Reinforcements see 4.1.2.

4.8 Class Symbol, National Letters, and Identification Number

4.8.1

The class symbol, a blue mark with the numbers 30 in black (see drawing), shall be placed between the first and second battens on the mainsail.

4.8.2

Nationality letters and numbers shall be placed according to IYRU regulations.

5 Other Racing Rules (unless the race committee specifies otherwise)

5.1

The boat shall be sailed by a maximum of four crew members and maintain that number throughout the series of races. For long-distance or ocean races, the class association may allow an increase to 5 crew members. This shall be stated in the notice of race. Exemptions for increased crew may also be granted for purely family crews. Only in exceptional and unforeseen circumstances such as illness or injury may the race committee allow a crew member to remain ashore.

5.2

An anchor of at least 10 kg and 40 meters of anchor line with a minimum diameter of 10 mm shall be carried onboard.

6 Deviation from Standard Boat

6.1 General

6.1.1

Nothing on the standard boat as delivered from the factory may be changed, modified, moved, removed, or added except as specified in these rules. This does not apply to parts or equipment that are damaged, worn, or otherwise need replacement. Such parts or equipment shall be of the same design, dimensions, weight, and function as the parts they replace. Extensive repairs must be checked by an approved measurer.

6.1.2

For clarity, the rules note certain deviations from standard boat configuration that are not allowed. Since it is impossible to anticipate all possible future modifications of the boat, equipment, rig, or sails, anyone wishing to make changes not explicitly allowed must assume they are prohibited. Approval from the class organization is required before any such change. The compliance with the one-design principle shall be assessed.

6.2 Hull, Deck, Keel, and Rudder

Additional through-hulls may be made in the hull. Flanges on self-draining scuppers and similar standard-mounted hull fittings shall not be modified. Fairing is allowed provided it does not restrict the hole opening. Only sanding, fairing, and painting intended to improve surface finish and prevent fouling are allowed. Original shape, weight, and dimensions must not be altered. Painting of deck, glued matting, or teak deck is allowed.

6.3 Interior Details

If interior items beyond the standard boat are added and must be fastened to hull, deck, or interior, these attachments may only be made to ensure a secure mount. Reinforcements or other devices to stiffen hull, deck, or interior are not allowed.

6.4 Equipment

6.4.1

For sheeting jibs, only the designated track or block on the toerail may be used.

6.4.2

Mainsheet track, cars, and adjustment may be replaced. Design and placement are free.

6.4.3

Placement and type of blocks, cleats, stoppers, etc., are free.

6.4.4

Length of tiller and tiller extensions is free.

6.4.5

Two additional winches beyond standard are allowed. Placement is free.

6.4.6

Safety equipment shall comply in scope and placement with the regulations of the applicable race.

6.4.7

The following instruments are allowed: wind indicator, echo sounder, speedometer/log, radio receiver with bearing compass, compass. These devices may not be interconnected. Any other instruments onboard must be sealed during racing.

6.4.8

One additional 12-volt battery of the same size as standard may be installed onboard.

6.5 Mast, Booms, and Standing Rigging

Only standard equipment is allowed.

6.5.1

Forestay profile, backstays, mast preventers, and similar devices are not allowed.

6.5.2

Hydraulic or pneumatic aids to tension or bend the rig are not allowed. Design of kicker and backstay adjuster is otherwise free.

6.5.3

A spare spinnaker pole may be carried onboard. Dirk may be removed.

7 Drawing Specification

  • Hull: Lines drawing 301, 311
  • Deck: 304, 314
  • Keel: 312
  • Rudder: 313
  • Interior: 303, 304, 305, 310, 311, 315
  • Sail plan, rig: 308

The specification covers two versions of the Omega 30.