Firefly 850 One Design

Class Rules

1. Firefly 850 One Design Class Catamaran Association

1.1 The association shall consist of:

  1. A rep from the owner(s) of each boat sailing or on order or under construction
  2. A rep from Latitude 8 Yachts (L8Y)
  3. A rep from Mark Pescott Multihulls (MPM)

1.2 Class Rules shall be decided by the above on a majority vote.

1.3 The purpose of the these Rules is to provide a basis for restricted-design Class racing for Firefly 850 Sports Class sailboats, internationally, and to provide a description of a Class-standard Boat.

1.4 Except where variations are specifically permitted by these Rules, sailboats of this Class shall be alike in hull, deck, beams, daggerboard, rudder, mast, sail plan and equipment and be as designed by MPM in the Firefly 850 One Design Construction Plans Book.

1.5 Modifications to these rules may be agreed on by e-mail vote if it is not possible to reach an agreement at a meeting due to insufficient members present.

1.6 It is solely the responsibility of the owner / skipper to ensure that the boat complies with the safety requirements for an event or regatta.

1.7 All boats will keep a copy of these class rules onboard at all times.

2. Boat and appendages

2.1 Unless otherwise stated the boat and sails shall be weighed and measured in accordance with the Offshore Multihull Rule (OMR).

2.2 Hulls and Decks - As built by L8Y and / or as designed by MPM Hulls shall have a LOA of not greater than 8.54m and a Hull Beam of not greater than 1.04m. The Boat shall have a beam centerline of the Hulls of not greater than 4.7m.

2.3 Daggerboards - As built by L8Y and / or designed by MPM Length to be not greater than 2975mm including stainless steel frame on top. Width to be not greater than 420mm. Thickness to be not less than 50mm.

2.4 Rudders - As designed by MPM Maximum depth measured from c/line of rudder shaft at the top to lowest point to be not greater than 600mm. Width of rudder blade at widest point to be not less than 48mm. Length to be not greater than 330mm and not less than 310mm.

2.5 Boat Weight - As weighed under the OMR Rule and including Minimum Equipment to be a minimum of 1010 kg. Boats weighed at less than 1010 kg shall have permanent fixed weights added in a manner acceptable to the class measurer, preferably lead weights behind the daggerboard case or attached to the main bulkhead to bring the boat up to 1010kg.

2.5a Any boat that is overweight may be given dispensation to carry a lighter high holding power Fortress anchor. This will be a one off and permanent change and will be recorded by the measurer on the Firefly Weight Summary and on the boats Minimum Equipment list.

2.5b All boats will keep a copy of its Minumum Equipement List onboard at all times.

Special rule for 2014 - All boats will be reweighed before the Phuket Multihull Regatta in July. Boats will be weighed with the Minumum Equipment onboard with no alterations. Preferably ALL boats will be weighed in the same session, on the same day, with the same scales. Boats must be dry ie, sails should not be left out on deck in the rain beforehand. All boats must have an inspection port access into the very front compartments. At the discretion of the measurer, the minimum boat weight of 1010kg MAY be adjusted after all boats are weighed.

2.6 Deck Fittings - There is no restriction on the type and placement of the deck fittings except that the jib tack must be as per plan and the jib sheet block must be on the main beam as per plan.

2.7 Auxiliary power - Auxiliary power to be provided by a 6hp 4-stroke outboard motor. Outboard motor must be in position and ready for use at all times whilst racing. If the motor cannot be properly secured on the bracket for some unforeseen reason then it may be carried inside the boat for one race only of a regatta. If the motor has been stolen or lost overnight during a regatta, then a weight of 27 kg of water ballast must be carried in the hulls aft of the aft beam.

3. Mast and rigging

3.1 Mast - As supplied by All Yacht Spars and or as designed by MPM Mast Section to be All Yacht Spars Section IM16L 160 x 112 x 4.2kg/m. Length 12.9m Similar sections may be allowed if this section is unavailable in certain parts of the world. Mast step height not to exceed 150mm from top of main beam to bottom of mast extrusion.

3.2 Boom - Boom Section to be Selden IRB2 120 x 62 x 2.1kg/m or similar with a weight of not less than 2.1kg/m

3.3 Prodder - Prodder length to be no greater than 2030mm including fittings.

4. Sails

4.1 Maximum Areas as measured by the OMR Rule and as per sheets 25, 26 and 27 of Firefly 850 Sports Construction Plans Book.

4.2 Mainsail - Measured Area Mainsail to be not greater than 35.0 m2. Mainsail to have slides and not bolt rope. Only one Mainsail to be used for a regatta. Any new Mainsail measured after 1 November 2008 must have a window in the lower part of the sail. It is highly recommended that all Mainsails have a window.

4.3 No 1 Jib - Measured Area No 1 Jib to be not greater than 12m2. Only one No 1 Jib to be used for a regatta. Any new Jib measured after 1 November 2008 must have a window as per the No 1 Jib plan. It is highly recommended that all No 1 Jibs have a window.

4.4 Spinnakers - Measurered Area Spinaker to be not greater than 74 m2 Under the OMR Rule. Spinnaker cloth weight to be not lighter than 0.75 oz/sq.yd. No more than 3 Spinnakers may be used during an event or regatta. Boats must have 3 Spinnakers onboard at all times. Spinnaker to have a mid girth of greater than 75% of the foot.

4.5 No 2 Jib - The No 2 Jib measuring not greater than 8.1 m2 must be onboard at all times.

4.6 Damaged sails - Mainsails and Jibs. Only sails that are blown out or irreparably damaged may be replaced during an event or regatta.

4.7 New Sails - For boats over one year old and with 3 Spinnakers. Only one new No 1 Jib or Spinnaker to be allowed each calendar year, Mainsail each second calendar year unless a sail is lost or irreparably damaged.

A boat that has not bought a new Spinnaker in the previous calendar year may be allowed 2 Spinnakers in the following calendar year.

For new boats - May have up to 2 Mainsails and No 1 Jibs in its first calendar year. May have up to 3 Spinnakers in its first calendar year or until it has 3 Spinnaker

4.8 An owner or skipper must inform the class secretary or all the skippers if replacing a damaged sail during an event or regatta.

4.9 An owner may apply to the Class Secretary to replace a sail that is not irreparably damaged and that is less than 2 years old for the Mainsail and less than 1 year old for the Jib and Spinnaker.

The Class will then vote on whether the case for a replacement sail is valid due to special circumstances such as excessive wear.

5. Crew weight and numbers.

5.1 Minimum crew weight, WC of 390 kg. May consist of any number of crew. If crew weight is less than 390 kg, then weight difference is to be carried in the way of sealed water bottles marked CB (Crew Ballast) distributed evenly throughout the boat. The onus in on each skipper to ensure that the boat complies with this requirement and have the crew weigh in if necessary.

A boat that has a weight measured WM of over 1010 kg. may have a minimum crew weight of less than 390kg by the same amount that it is over 1010 kg. WM + WC = 1400 kg

6. Weight Declaration Form and Inspections

6.1 Every skipper will fill in and sign a Weight Declaration Form before each regatta or event.

6.2 Every skipper will record his/her individual crew weights, total weight and the amount of, if any Crew Ballast needs to be carried. This record of weights, (or, if possible a copy of the Weight declaration form) shall be carried onboard at all times with the Minimum Equipment List and these Class rules. The skipper of any boat that is required to carry Crew Ballast shall inform the class secretary and /or the other skippers and display the Crew Ballast that is being carried.

6.3 The skipper of each boat agrees that the boat will be available to inspection for compliance with clauses 2.5 and 5.1, by any other skipper or crew member at any time during the regatta except while racing and immediately prior to racing. This includes immediately after the finish of a race and during any intervals between races.

6.4 In addition, the class skippers may appoint a scrutineer to check boats during the regatta.

7. Responsibility

It is the responsibility of the owner, even if he is not onboard AND the skipper to ensure that the boat conforms to these class rules.

8. Class Sponsorship

When the Firefly 850 One Design Class has a sponsor for a regatta or an event then each boat should carry advertising as required by the sponsor, typically; A large sticker on the lower part of the mainsail. A sticker on the hull. A “battleflag” to be flown at anchor or in the marina.

9. Firefly of the Year Award

9.1 Points form all 7 Regattas in the region shall count towards the Firefly of the Year Award. These regattas are The Kings Cup Regatta, The Royal Langkawi Regatta, The Phang Nga Bay Regatta, The Top of the Gulf Regatta, The Samui Regatta, The Phuket Multihull Championships and Phuket Race Week.

9.2 There shall be 2 discards from the 7 events.

9.3 Points score system shall be the maximum points score system depending on the number of boats in regatta with the following provisos.

There are 8 Fireflys in the fleet. The Kings Cup Regatta shall award 10 points for first place, 9 for second place,8 for third etc. regardless of the number of entries. All other regattas shall award points on the basis of the number of entries plus two points for first place, and one point less for each place.

Special Amendment for Phang Nga Bay Regatta

Minimum Crew Weight, WC shall be 320kg and WM + WC = 1330kg. All boats will carry an extra 10 kg of anchor or chain. That can be either a 10 kg heavier anchor, a 5 kg heavier anchor and 5kg extra chain or 10 kg extra chain.

Our Sponsors with appreciation

Thank you to the 2018 Cape Panwa Hotel Phuket Raceweek Sponsors
Sponsors of the 2018 Cape Panwa Hotel Phuket Raceweek