The mast section shall be E7650 (105 X 74 mm). The length, including end fittings, shall be 7600 ± 20 mm overall. The backstay shall be attached to the masthead fitting which may also support the main halliard turning block, topping lift and spinnaker halliard.
The forestay and cap shrouds shall be attached to the mast at a point 7070 ± 20 mm above the mast base. Spreaders shall be attached to the mast at a point 3770 ± 20 mm above the mast base and shall be 630 mm in length. The inner forestay and lower shrouds shall be attached to the mast at a point 3720 ± 20 mm above the mast base.
The gooseneck fitting for the boom shall be fitted in such a position that the top of the boom lies 530± 20 mm above the cabin top when measured along the aft edge of the mast.
Two bands of colour, contrasting with the colour of the mast and not less than 20 mm wide, shall be painted on the mast at a distance of not more than 6750 mm apart. The top edge of the lower band shall line up with the upper edge of the boom when the boom is in its functional position.
The boom section shall be E7568 (80 X 59 mm). The length shall not exceed 3020 mm from the centre of the gooseneck pin to the end fitting.
A band of colour, contrasting to that of the boom and not less than 20 mm wide, shall be painted on the boom with its inner edge 2750 mm from a point where the projection of the aft side of the mast intersects the top of the boom, when the boom is in its proper position relative to the mast.
The pole, when stripped of all fittings, shall be capable of being passed through a 100 mm diameter ring. When the pole is attached to its mast fitting and is held horizontal and at right angles to the centreline of the hull, the distance from the centreline of the mast to the inside of the beak shall not exceed 2750 mm.
Standing rigging shall be set up in accordaance with the designer's Drawing No S182, Issue 6. Adjustment during a race is permitted only on the backstay and inner forestay. Twin forestays or other means of facilitating headsail changes shall be permitted.
Maximum sail dimensions, when stretched firmly by hand on the floor, shall be:-
When the mainsail is set no part of it shall be outside right angle projections from the lower edge of the upper mast band and the inner edge of the boom band, as described in Clause 9, respectively.
| Mainsail ||Luff||6700 mm|
The number of battens in the mainsail shall not exceed three and the total length of battens shall not exceed 2500 mm.
| No 1 Genoa ||Luff||7160 mm|
The recommended dimensions for smaller headsails are:-
To measure the half height width of a spinnaker:
| No 2 Genoa ||Luff||6250 mm |
| Working Jib ||Luff ||5640 mm|
| Storm Jib ||Luff||4240 mm|
| Spinnaker ||Luff||7620 mm|
|Half height width||4300 mm|
- Fold the sail so that the luffs coincide and the foot is folded equally.
- Fold the luffs so that the head coincides with the foot. Ensure that the folded sail is properly spread on the floor.
- Measure the width at the top of the folded sail, at right angles to the luffs.
- Double this measurement to give the half height width.
The recommended sizes for a smaller spinnaker intended for use:
- By inexperienced crews.
- In fresh winds or when shy reaching in moderate winds.
- When cruising are:
Only one spinnaker may be in use at any one time.
|Half height width||3350 mm|
The following are not permitted:
- Bowsprits or bumkins.
- Outriggers for sheeting sails.
- Any device, such as a trapeze, extending outboard to support crew members.
- Sail markings other than the insignia, registration numbers or manufacturer's trade marks.
- Reinforcement of sail corners other than as required to provide security for cringles.
- Mainsail headboards with a maximum dimension in excess of 120 mm.
- Sails manufactured from Mylar or Kevlar materials.
- Headsails fitted with battens.
- Bloopers and other sails not fitting the descriptions and restrictions of Clause 11.
While racing, the following furniture shall be contained in the yacht:
- Bunk cushions.
- General timber fitout.
Sunmaid 20s shall be fitted with an outboard auxiliary engine. Whilst racing, removal of the engine from its bracket is prohibited.
The minimum power for an auxiliary engine shall be 5 horsepower (3.73 KW).
Class Basic Handicap Measurements:
Deviation from the current, published Class Basic Handicap (Yachting Victoria) measurements for the Sunmaid 20 is not permitted.
Current Australian Yachting Federation " Special Regulations for Racing Boats" shall apply in all races. The category shall be specified in the Sailing Instructions for the particular race or series. In addition to the AYF regulations it is a requirement of the Sunmaid Association of Victoria Inc. that all Sunmaid 20s be fitted with an effective boarding ladder.
The Association reserves the right for its committee to grant temporary dispensation to yachts not meeting these Rules and Restrictions. Such dispensation will only be granted for minor deficiencies and shall apply only for a particular race or series.
The Sunmaid 20 Rules and Restrictions were originally prepared in August 1984. Reprinted and edited in September 2004.