Megabyte Class Draft Rules

These draft rules together with any further proposed amendments thereto will be circulated by post or e-mail to Class Members for ratification prior to August 1st 2007. In the interim, proposed amendments should be forwarded to class@ps2000.ca at anytime and will be posted on the discussion page with all comments invited.

 

1) One-Design

5) Sail

9) Repairs & Replacements

2) Definition

6) Centreboard

10) Sailing Requirements

3) Construction

7) Rudder

11) Clothing & Equipment

4) Mast & Boom

8) Deviations

12) Advertising

 

 

 13) Amendments

By-law 1 of the Megabyte Class International Association Constitution

1. OVERRIDING ONE-DESIGN PRINCIPLE
The Megabyte Class sailboat was created as a true one-design class which, when raced, will provide a real test between competitors of racing skills and seamanship and not a test of boats and equipment. Therefore, any alteration, or attempt at alteration, of the hull, centreboard or rudder shape, construction, equipment, spars, sail or rigging, as it was supplied by the builder, is a breach, in substance, of these rules UNLESS SUCH ALTERATION IS SPECIFICALLY AUTHORIZED BY THESE RULES.

2. DEFINITION
In these Rules, "builder" means any manufacturer who is licensed to build the Megabyte Class sailboat by the Copyright Holder which shall also include the Principal Licensee, Performance Sailcraft 2000 Inc.

3. CONSTRUCTION
Hull and deck shall be built in composite moulds produced from Master Tooling supplied by the Principal Licensee and constructed in accordance with the specifications and the procedures of the Construction Manual.

4. MAST AND BOOM
The mast and boom, and all fittings and their position, shall be as supplied by the Builder and shall conform to the Measurement Diagrams.

(a) No spar which has a permanent bend may be used.

(b) Nothing may be used to affect the position or rake of the mast with the exception that a wear strip not exceeding 2.0 mm in thickness and not wider than 50 mm may be placed around the entire circumference of the mast. Nothing else may be placed in the mast cavity but it may be lubricated.

(c) Tape or other bushing material may be applied to the upper mast on the surface that actually slides into the lower mast. The joint may be taped over.

5. SAIL
No sail, including a replacement sail, is permitted unless it was produced by a sailmaker licensed to build the Megabyte Class sail using Master Patterns supplied by the Principal Licensee.

(a) No sail may be re-cut or otherwise altered in any way other than to effect necessary maintenance or repairs or to attach wool, ribbons or other similar wind indicators or to attach racing numbers.

(b) The sail emblem shall be glued, sewn or silk-screened, back to back, on each side of the sail and, if silk-screened, it shall be clearly visible from both sides.

(c) Supplied sail battens may be changed for any other untapered batten except for the top batten which is unrestricted. Batten pocket lengths may not be increased to accommodate a replacement batten.

(d) The registration number of the boat, as moulded into the hull or deck, shall be the racing sail number. All numbers, identification and their position shall be in accordance with ISAF RRS, Appendix G. For ease of reference, they are as follows:

Numeral Height: 300 mm minimum
Letter height: 300 mm minimum
Space between letters & numerals or edge of sail: 60mm

6. CENTREBOARD
The centreboard shall be only as supplied by the builder and shall conform to the Measurement Diagram.

(a) A stop, or stops, shall be affixed which preclude the board protruding more than 875 mm below the hull when measured along the trailing edge as shown in the measurement diagram. Other than these stops, and a rope handle that may serve as a stop and a line or shockchord as per 6 (d), no other attachment is permitted.

(b) Any dents or bumps in the aluminum foil may be filled, (or flattened), re-faired, sanded and polished but not so as to change the shape of the section. A repaired centreboard may be repainted for cosmetic purposes only. The joint between the leading edge extrusion and the trailing edge extrusion may not be filled or faired.

(c) The top and bottom urethane end plug castings may be sanded filled and
re-faired to maintain the original shape of the castings.

(d) A line or length of shockchord shall be attached to the centreboard above the cockpit sole and thence to the mast or an existing fitting to prevent loss in case of a capsize.

7. RUDDER and RUDDER HEAD
The rudder shall be only as supplied by the Builder and shall conform to the Measurement Diagram.

(b) Any dents or bumps in the aluminum foil may be filled, (or flattened), re-faired, sanded and polished but not so as to change the shape of the section. A repaired rudder may be repainted for cosmetic purposes only. The joint between the leading edge extrusion and the trailing edge extrusion may not be filled or faired.

(c) The top and bottom urethane end plug castings may be sanded filled and
re-faired to maintain the original shape of the castings.

(d) The rudder head shall be only as supplied by the Builder. It may be padded with any material to protect the rudder and to reduce the movement of the rudder in the head. There shall be a rope handle fitted so that the leading edge of the rudder, when fully lowered, and measured along the leading edge, does not extend more than 667 mm below the point at which the extension of the center line of the hull intersects the foil.

(c) The tiller and its extension is not restricted in any way.

8. PERMITTED DEVIATIONS FROM THE OFFICIAL DRAWINGS AND SPECIFICATIONS
Lines, (not wire), of uniform diameter, and of any material and length, may be substituted for those supplied by the builder with the exception that the halyard may be of wire or line. No additional lines may be affixed, other than a bow line, anchor line and any other line contemplated in the Permitted Deviations that follow. Deviations from the official Measurement Diagrams and specifications shall be permitted only in respect of the following:

a) ADDITIONAL PAD EYES may be installed for any additional rigging as contemplated by paragraphs b), c) or e) which follow. The pad eyes may be installed on the deck provided they fall within an area directly behind the mast collar beneath which there exists a 32 mm x 102 mm aluminum reinforcement. (The existing pad eye is attached to this reinforcement with machine screws).

b) The OUTHAUL, may be any block and tackle system, of any mechanical advantage, attached to the clew of the sail and led, via blocks or existing fairlead, to the existing clamcleats on the deck. Blocks may be fitted with quick disconnects. The clew may be attached to the boom in any manner providing holes are not made in the boom

c) The CUNNINGHAM, subject to being a block and tackle system whose mechanical advantage does not exceed 8:1, may be attached to the tack cringle by a hook or by passing the line through the cringle. Lines may be led, via blocks, to the existing clamcleats on the deck. No additional fittings may be attached to the mast but additional blocks may be added to the existing vang tang. The blocks may be fitted with quick disconnects,

d) The TRAVELER may be one continuous line, or two individual lines, rigged between the traveler car and any fitting attached to either the traveler track or the cockpit sole or cockpit side and thence led to a single jam cleat, with or without a fairlead, affixed to the cockpit carling or side deck.

e) The BOOM VANG, subject to being any block and tackle system whose mechanical advantage does not exceed 12:1, must be secured at one end to the tang fitting provided on the mast and, at the other end, attached to the boom via the key slot. Lines may be led, via blocks, to the existing clamcleats on the deck. No additional fittings may be attached to the mast but additional blocks may be added to the existing vang tang. All blocks may be fitted with quick disconnects.

f) The ADDITIONAL BLOCKS permitted in (a), (b) and (d) may only be attached to existing fittings, fairleads or allowable extra pad eyes. No additional holes shall be drilled in the boom, spars or hull other than allowable pad eyes. In particular, any turning block used for the outhaul at the forward end of the boom may only be fitted by means of an eye, block or similar fitting, bolted through the existing holes in the gooseneck or attached to it with a quick disconnect.

g) The MAINSHEET shall be reeved with a purchase of 4:1 minimum, and 5:1 maximum, and must be controlled at all times using the chosen configuration. Leading the final purchase through a turning block on the traveler or the cockpit sole is optional and, in particular, when reaching, it may be taken directly from the boom.

h) The MAINSHEET COCKPIT TURNING BLOCK, and its base, are optional and may be replaced by any type of block, with or without an integral jamming device. One jam cleat is permitted on each side of the boat on either the cockpit carling or the side deck,

i) The HALYARD, of either rope or wire, shall be used at all times to support the sail and the sail shall be capable of being lowered from the deck. In the case of a rope halyard, a clamcleat shall be fitted to the front of the upper mast, for securing the halyard. In the case of a wire halyard, a locking device for a ball on the halyard shall be fitted to the front of the upper mast.

j) CLIPS, TIES, STORAGE RECEPTACLES for stowing paddles, anchors, loose personal gear or safety boarding lines may be attached in the cockpit, or to the lower mast or boom. One, or two, small pockets, capable of holding a length safety boarding line that may be passed over the side of the boat in a capsize to facilitate getting onto the board, may be attached anywhere in the cockpit or under the gunwales using self adhesive Velcro. The end of the line so contained may be attached to any existing fitting in the boat.

k) INSPECTION HATCHES with watertight, threaded covers, (bayonet mounts are deemed not to be threaded), may be fitted in the cockpit provided they do not exceed 152 mm (6") in diameter. Hatches may include an integral bag or bucket for stowage.

l) Up to two COMPASSES may be mounted anywhere on the deck, in the cockpit, or to the lower mast. The hull cavity shall only be pierced by the fasteners and only clamps, tape, or an existing fitting may be used to attach a compass to the mast without any additional fasteners. The compass may not be fitted into an inspection hatch.

m) WIND INDICATORS may be affixed anywhere to the boat, its spars, boom and equipment provided the watertight integrity of the top mast is maintained and the sail is not cut.

n) ALL BLOCKS supplied by the builder may be replaced by blocks of any make provided they are of substantially similar size and function.

o) The HIKING STRAP, or straps, may be padded or replaced by integrally sewn and padded straps. Straps may only be attached to the existing pad eyes at the rear of the cockpit and, forward of these, to the existing sliding tracks and pad eyes. Shockchord may be used anywhere to support the straps off the floor provided only that it is attached to an existing fitting. The straps may be pierced at any position.

p)  A JC STRAP may be attached only to the forward towing eye on the deck and thence to the boom. It may be tied off directly to the eye or may pass through a block tied off to the eye with any length of line provided it is not adjustable while underway. No other fittings shall be permitted. Attachment to the boom may be by any arrangement of hooks or shackles, may only be to an existing fitting and shall not attach aft of the main sheet block bail. When not in use the strap may be removed from the boom and the hooks attached to the control clamcleats on the side decks.

9. REPAIRS AND REPLACEMENTS
In case of damage, repairs may always be made to the boat without violating these rules provided that they are done in such a way that Rule 1, The Overriding One-Design principle, is respected and that replacement fittings are placed as close to the position of the original fitting as is structurally feasible.

 

10. SAILING REQUIREMENTS
(a) Nothing shall prohibit two or more persons from racing a Megabyte Class sailboat, provided both persons are aboard the boat for an entire regatta or series. Both persons may alternate at the helm.

(b) No part of the Skipper or Crew's torso may be placed forward of the mast while racing.

(c) The requirement of an anchor shall not apply to the Megabyte Class unless the Sailing Instructions of a race, or series of races, so stipulate specifically.

(d) No treatment shall be applied to the hull which is specifically intended to improve its performance. This shall not preclude sanding for refinishing, repainting, polishing and waxing.

(e) For any race or series of races, both the Skipper and Crew of a Megabyte shall wear a lifejacket or Personal Flotation Device (PFD) while afloat, both going to and from the race course and during the race or races.

(f) No person is permitted to race a Megabyte in a sanctioned regatta unless he or she is a member of his or her District or National Megabyte Association or a member of the Megabyte International Class Association.

11. CLOTHING AND EQUIPMENT
ISAF RRS, Rule 43, shall apply except that the limit shall be 10 kgs and shall include footwear or other clothing worn only below the knee. Weighing of clothing shall be in accordance with Appendix H of the RRS.

12. ADVERTISING
Advertising shall be governed by the ISAF Racing Rules of Sailing, Appendix 1, Regulation 20. In accordance with 20.4.1 (a), the Megabyte Class is designated to be Category C.

13. AMENDMENTS
Any amendments to these Rules shall require the approval of:

a) the World Council,

b) two thirds of the Class membership voting by postal vote or by e-mail within a 30 day time delay following notification to the membership.