Sunday, June 20, 2021
Home Events Regatta Beta v. of ORCmh with the multihull in the Loro Piana Superyacht

Beta v. of ORCmh with the multihull in the Loro Piana Superyacht

After being introduced as a concept at the ORC Annual Meeting in November 2016, it’s been over 4 years of effort to reach the “soft launch” phase of the development of the new ORC Multihull Rule system (ORCmh). A team of ORC, World Sailing and KND performance analysts, measurers, and programmers led by International Technical Committee Chairman Andy Claughton are ready now to use a Beta version of ORCmh with the multihull entries in the upcoming Lora Piana Regatta held at YC Costa Smeralda in Porto Cervo over 1-5 June 2021.

“Using the experience of more than 30 years of development of the ORC rating systems for monohulls for ORC International and ORC Club certificates, and in the last several years the widely used ORC Superyacht rating rule, we now pleased to offer the ORC Multihull – a rating system for any type of catamaran or trimaran,” said Claughton.

The measurement procedures are similar to that for monohulls. The geometry of the hulls, superstructure and appendages are captured in the hull offset file, which can be based on physical scanning or verified designer CAD files. The Offset file format accommodates a variety of different appendage types such as curved foils or retractable boards. Rig measurements also follow the established monohull principles recognizing multiple foretriangles that are typical for multihulls, and sail measurements follow the World Sailing Equipment Rules of Sailing (ERS).

Additionally, propeller measurements are taken also following already established procedures and protocols. The detailed ORCmh Rules and VPP Documentation will be published in due course. Scoring will use the same approach as monohull racing, with custom and pre-defined course options available based on the ORC VPP.

As Certificates are issued after the Beta version is evaluated, the ORCmh VPP will be subject to updates and improvements ahead of the ORC Congress meeting in the Autumn of 2021. For 2022 ORCmh will be adapted into the usual two Certificate process, as already exists for monohulls: ORCmh International that will be based on complete measurement, and ORCmh Club that uses the same data inputs which can be declared by the owner or obtained from another source such as photos, drawings, designs or data from identical or similar boats.

ORCi is intended for use on World, Continental, Regional and National level as well as major international offshore races, while ORC Club is as its name implies designed for Club-level racing that can go up to national championship level. Both systems having the same rating and scoring options and can be scored together in any races.

During this Beta development phase ORCmh certificates will be issued by the ORC Central Rating office while from 2022 this will be extended to the National Rating Offices.

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