ORC Grand Prix Classes

General description

 


The ORC Grand Prix Rule is a BOX RULE expressly studied and designed for three different size boats: 26, 33 and 42 foot creating three level classes: GP 26, GP 33 and GP 42 that follows the path of the well known and succesfull Ton Level Classes.

Targets, strongly maintained during the whole research period, have been to promote the conception and construction of boats fun to sail, seaworthy and with considerable longevity. In the development procedure many contributions have come from more than 50 design offices including the most famous ones in the world. The ORC is grateful to all of them and is glad to present the Level Rule on the market conscious that it will change again the way to race and to sail at the highest level.

Briefly the rule is designed to create one offs in the frame of a very tight shape and construction controls. Owners are happy to maintain some design freedom and the Rule opens up the opportunity for them to select their own designers and builders. Good benefits of course have come from the presence and evolution of other Box Rules worldwide.

The ORC Grand Prix Class principle characteristics are a light displacement, simple fractional rig with non-overlapping jibs, no runners and a large sail area boats with great performances and relative affordable costs.

It is the intention that the rules and specifications for the ORC Grand Prix Classes provide close racing without time allowance in grand prix competition and that the yachts designed to this rule be fast, sound and seaworthy, retaining thereby, with a minimum of modification, good value beyond their competitive life as grand prix racers.

Neither an IMS hull measurement nor an IMS Certificate is required. However, except where otherwise stated, the measurement prescriptions of the International Measurement System shall apply as may be appropriate to the particular measurements specified under the Class rules, including provisions for preparation for measurement, freeboards, sail and rig measurement.



 

ORC Grand Prix Rule 2007

GP 42

GP 33

GP 26

GP Class rule correction


According to the note bellow the Table of Limits of the GP Class rules, corrections of the GP Class rules has been approved by the ORC in order to correct some misprints and to put some clarifications. These corrections has no effect on existing boats nor the boats currently building, but will make class rule easier to understand.

Measurement ilustrations

Following sentence has been added:
"
Measurement illustrations are for information only. All measurement definitions are given in the relevant IMS or GP rule."

Table of limits

LPG     Reference to the rule I-813 is corrected to I-813.1
JGM     Reference to the rule GP-505.1 is corrected to I-813.4
JGU     Reference to the rule GP-505.2 is corrected to I-813.4
SL       Reference to the rule I-847.5 is corrected to I-820.1, word “Luff” is deleted from Description
ASL     Reference to the rule I-847.5 is corrected to I-820.2, word “Luff” is deleted from Description

Typo error corrections

In the last sentence of second paragraph of 502.1 word “be” is deleted after “fixed anchor point … “
“Figure 3” is deleted bellow first measurement illustration
“Figure 4” is deleted bellow second measurement illustration
Title “Table of limits” is added above table of limits.

All the relevant ORC Rules and Regulations available on the web are updated with this change.

17. 07. 2007.

Administration


The authority for the rules of the ORC Grand Prix Classes is the Offshore Racing Congress (ORC) and the rules shall be maintained and administered at ORC discretion. It is intention of the ORC Grand Prix class rules not to be changed before 2010, but modifications, clarifications and interpretations can be issued periodically and posted on this website.

ORC GP Classes Consultants

GP 42 Paolo Massarini
GP 26 & 33 Thomas Nilsson
GP 26 & 33 Martin Biloch


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