1998

Great Lakes J- 120 One Design Class

 

President: Robert Kirkman

Vice President: Marv Ihnen

Secretary/ Treasurer: Bill Bresser

Annual dues: $50.00

 

Exceptions to Class Rules

 

1. Three asymmetrical spinnakers allowed for all races.

2. Removal of table, three doors & V-berth cushions optional.

3. All secondary Helmsmen must be a non professional and approved the class majority and on record with the Secretary prior to the start of the respective race.

4. Maximum crew for Harbor Springs Regatta is 8 people; no limitation on races greater then 50 nautical miles.

5. Dodger is optional for all races.

6. Light spinnaker sheets are allowed for long distance races.

7. Sails used for long distance racing shall be limited to one mainsail, two #1 headsails, one #3 headsail, one staysail and any quantity of' asymmetrical spinnakers.

 

Great Lakes J-120 Championship Trophy

to be awarded based on low point scoring of the combined

Detroit Nood regatta & Port Huron Mackinaw race.

Mackinaw race to decide tie breaker

 

 J/120 Class Association Rules - 6/96

 

 

OBJECTIVES

1.1 These rules are to preserve J/ 120's cruising features, including ease of handling, low cost of ownership, safety and comfort.

1.2 Except where variations are specifically permitted by these rules, J/120s shall comply with standard specifications published by J Boats, Inc. and these class rules and shall be as delivered from authorized builders in hull, deck, keel, rudder and spar construction, weight and weight distribution, sail plan, equipment, and interior furnishings.

1.3 No alterations or modifications are permitted unless explicitly permitted by these rules. Alteration or modifications to class rules shall only be permitted with the joint approval of the copyright holder (J/Boats, Inc. Box 90, Newport, 02840) and J/120 Class.

 

ADMINISTRATION

2.1 The J/120 Class Association shall be the sole authority worldwide for the conduct and management of J/120 Class events. The management of class events and class rules shall be conducted with the involvement of the copyright holder and Class Executive Committee.

2.2 The Executive Committee consists of the President, Secretary-Treasurer who acts for the President in absentia, and the Chief Measurer.

2.3 The ExCom shall (i) keep members informed of proposed rule changes and activities (ii)seek member consensus in recommending rule changes to the copyright holder.

2.4 J/120s shall be built only by builders licensed to do so by J Boats, inc., and shall comply with J/120 building specifications detailed by the copyright holder.

2.5 No boat shall be deemed a J/120 class boat until it has been completed with a building number assigned by J Boats, Inc. molded into the transom.

2.6 Molded fiberglass parts, spars, rudder, keel, engine and prop shall be supplied by J Boats, Inc. or their authorized J/120 agent.

2.7 The official language for the class shall be English. The word "shall" is mandatory. The word "may" is permissive.

 

MEMBER HELMSMEN

3.1 An Active voting member of the J/120 Class Association shall be a legal owner of a J/120 and, whose USS$50 annual dues have been paid for each co-owner or helmsman. Each yacht shall have one vote.

3.2 Owner is defined as a person who owns either the entire yacht or is one of two or three equal partners in terms of financial investment in the purchase of the complete yacht and the cost of its operations.

3.3 The primary helmsman shall be an owner or a member of an owner's immediate family. A Primary helmsman is defined for closed course day races as a person who, excepting for momentary absence due to personal or shipboard needs, steers the yacht during the 5 minutes prior to and including the start. all windward legs, and on all mark roundings including the finish.

3.4 ExCom shall be the sole interpreter of these definitions and their application.

 

MEASUREMENT

4.1 A measurer shall not measure a yacht in which he is an interested parry.

4.2 Owners have the responsibility of ensuring that their yacht complies with these Class Rules.

4.3 By participating in J/120 events, owners agree to permit J/120 Class Officers or Race Committee or their appointed representatives to board their boat unaccompanied for the purpose of inspecting, measuring or equalizing at any time during a regatta or within 24 hours prior to or after the event.

 

EQUIPMENT RULES

5.1 Standard furnishings, equipment, swin ladder, jib roller furler and dodger shall not be relocated or removed when racing.

5.2 Safety equipment shall, at a minimum, conform to US Coast Guard regulations or other federal regulations.

5.3 PERMITTED while racing:

5.3.1 Integrated tactical electronic instrumentation. compasses and chart platters.

5.3.2 Autopilot (switched off) and related compass.

5.3.4 Cruising and daysailing amenities which don't enhance performance.

5.3.5 Foredeck lifeline netting, shroud rollers & other anti-chafing gear.

5.3.6 U-bolts or padeyes (P&S) on rail for jib/genoa reaching leads, and amidships docking attachment points.

5.3.7 Telescoping whisker pole for use with jib or gcnoa only.

5.3.8 Carbon Fiber Mast W/Carbon speaders and rod rigging.

5.3.9 Carbon Fiber Boom

5.4 NOT PERMITTED while racing.

5.4.1 Halyard Locks or Hooks.

5.4.2 Holes or Tubes which feed halyards or control lines through the deck, hull or transom.

5.4.3 Altering Rudder or Keel Profile or exceeding tolerances in Official Offsets.

5.4.4 Light gennaker sheets.

5.4.5 Use of a mast, boom or bowsprit which has been modified in any way, such as cutting off the mast bum to increase rake.

 

SAILS

6.1 Sails shall be measured and constructed in accordance with IOR sail measurements, IMS rules WITHOUT PENALTY and ORC regulations, except where otherwise stated herein.

6.2 Sails used during an event or series, when competing for J/l20 Class trophies either in onedesign or mixed fleet events, shall be limited to one mainsail, two headsails and two asymmetric spinnakers. Event organizers

may further restrict sails to one headsail and one asymmetric spinnaker or simply to cruising canvas with one or two headsails.

6.3 The mainsail and headsails shall be manufactured from the equivalent of Dacron, Mylar or Kevlar and the asymmetric spinnakers shall be of nylon or polyester.

6.4 The mainsail shall be fitted with four (4) battens of any length so that the center of the batten pockets shall divide the aft edge of the sail into approximately five equal parts. The tack ring of the mainsail shall be affixed in the standard tack fitting and the mainsail may be loose-footed. At least one reef point shall be installed. The mainsail shall be attached to the mast with sail slides. The class insignia in blue with overall dimensions approximately 500xl000mm shall be affixed on both sides of the sail with the bars nearly perpendicular to a line between the head and the center of the boom and between the upper two battens.

6.5 The blade jib (LP under 105%) and genoa (LP under 155%) shall be attached to and operated on the standard roller furling system using #6 luff tape.

6.5.1 The blade jib may have 3 Harken or other rolerable type battens or stiffeners.

6.6 Two asymmetric spinnakers are permitted of maximum sizes 120 square meters and 165 square meters

as measured under the AC Cup rule: (SLU+SLE)*.25SF + (SMG-.5SF) * (SLE+SLU)/3 where SLU (luff) shall not be greater than 20m.

6-6.1 Adjustable Kevlar leech, luff and foot lines shall be fitted.

6.6.2 A Snuffer may be fitted and used.

6.7 Heavy weather jibs of less than 80% LP, a storm trysail or 2nd mainsail reef at least 40% up from the tack required by ORC regulations are additionally permitted, but are not required for J/120 one-design racing.

6.8 Sail purchases are limited to one mainsail in any 24 month period, one jib and one asymmetric spinnaker, each in any 12 month period.

 

ADDITIONAL RULES

7.1 The maximum crew weight for onedesign racing is 600 kilograms with no limit on numbers of crew, or 6 people of unlimited total weight.

7.3 To equalize displacenent (Flotation) for one-design racing: Yachts shall be measured without crew, with empty water tanks, with all gear, stores, sails and with not less than 1/4 tank of fuel aboard. in the following fashion:

7.3.1 Gear shall be moved so that the distance on all boats from the lowest tip of the transom, measured vertically down the trailing edge on the rudder, to the water is equal.

7.3.2 Ballast prescribed by the organizers shall be then added so that the distance from the forward face of the stemhead fitting at point representing a line projected from the top of the moulded hull flange, measured vertically to the water, shall be equal on all boats.

Back to One Design Rules