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. The purpose of the Firefly 850 One Design Class is to provide fair and even racing in a One Design class sailed in the spirit of good sportsmanship.

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.

1.8 It is noted that while the Firefly 850 One Design are not identical production boats, every attempt is made to keep the boats as alike as possible. No owner shall make any changes to boat, hull, or appendages in order to gain an advantage, without class approval. This does not preclude fairing or polishing of the hulls or appendages.

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 to Firefly 850 hand drawn hull and deck patterns dated 12/93. 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 1000kg. Boats weighed at less than 1000kg shall have permanent fixed weights added in a manner acceptable to the class measurer, preferably lead weights attached to the main bulkhead to bring the boat up to 1000kg. Alternatively, boats shall carry water bottles marked as BB that are evenly placed behind the daggerboard cases.

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 Minimum Equipment List onboard at all times.

2.5c Any equipment changes, removal of any items, changes to lighter equipment must be presented to the measurer for weighing so that the changes can be recorded on the Firefly Weights Summary. If any changed or removed item is not presented for weighing, the measurer may use his discretion to estimate the weight removed.

2.5d The measurer / secretary will provide a weight summary of all the boats weights which will include any changes since the boats were last 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. Any change to deck gear and fittings made after 1 July, 2017 must be approved by the class.

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. The One Design A0, as per A0 sail plan dated 17/6/2017 shall be one of the 3 Spinnakers. As an interim alternative, boats that do not have a One Design A0 shall use the original Rolly Tasker small spinnaker.

4.5 No 2 Jib Measured Area No 2 Jib to be not greater than 10m2 Only one No 2 Jib to be used for a regatta. No 2 Jib must have a window as per the No 2 Jib sail plan. No 2 Jib cannot be replaced for 2 years from date of measure unless sail is lost or irreparably damaged. Boat owner must apply to Firefly 850 One Design Class to ask permission to replace sail.

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 and 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 Spinnakers in the following calendar year.

For new boats and for new owners of boats that have changed hands. 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. Or less than 2 years old form the date of measure for the No2 Jib. The Class will then vote on whether the case for a replacement sail is valid due to special circumstances such as excessive wear.

4.10 Owners will declare which sails they will be using before the start of the regatta, identified by measurement date, sailmaker and colour of sail for spinnakers.

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 1000kg. may have a minimum crew weight of less than 390kg by the same amount that it is over 1000kg. WM + WC = 1390 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 eights, (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. The skipper of each boat shall invite one or more of the other skippers aboard for an inspection during the regatta. 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.

6.5 Every owner / skipper shall invite at least one of the other skippers onboard

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 from The Bay Regatta, Langkawi Regatta, Phuket Multihull Solutions Regatta, Phuket Race Week and the Kings Cup will count towards the Firefly of the Year Award

9.2 There shall be 1 discards from the 5 events.

9.3 Points score system shall be the maximum points score system depending on the number of boats in Regatta.

Points willl be awarded on the basis of the number of boats entered plus one point for first place in the regatta. Second place one less point and so on.

9.4 The Firefly of the year Award will be presented each year after the Kings Cup Regatta.

Special Amendment for Phang Nga Bay Regatta

Minimum Crew Weight, WC shall be 320kg and WM + WC = 1320kg

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.

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