irC YeArBook 2010
F
AQs
HoW does iT All Work?
Many of you are familiar with the irC system, but for newcomers and those of you who still aren’t sure and don’t
like to ask, here is a brief explanation of how it all works, and answers to some frequently asked questions.
see also the irC website (www.ircrating.org) which contains more information and news
oVerseAs oWNers: The notes on this page mainly apply specifically Rule Authority or club request it. Your Rule Authority will sort out any
to boats in the UK (GBR), so where it states ‘we’ or ‘us’ please read as your queries with you and then forward your application to us for processing.
local IRC Rule Authority. Although much of the information applies to over- Once processed we will send your boat’s certificate file back to your
seas boats as well, note that individual Rule Authorities may have differing Rule Authority for printing. During Jan-Aug we have hundreds of ratings
administration methods. Your country may not have a Rule Authority yet – to process, so it can take 28 days – please get your application in early
please see the list on page 64 or on the IRC website – in which case you and allow for local administration time. Please note the ‘expedited
may send your application direct to the Rating Office. processing fee’ for late applications. If your boat is a strict one-design
overseas new application: To apply for a rating, complete the Excel recognised by IRC, you can use the One-Design application form on
application form (available from your local rep) and return it to your Rule page 33. Please read the rules before you submit the form, and the
Authority by e-mail with the fee. IRC is a self-measurement system, application notes and definitions. If you are not sure, please ask! All
which means you do not have to get the boat measured unless your local irC rating requests must be sent via your local rule Authority.
Applying for a rating
send us the form, and the application notes and definitions. If you are not
GBR and countries without a local IRC Rule Authority (see page 64).
sure, please ask!
To apply for a rating, complete the Excel application form (available on our
When you get your certificate
website) and return it to us with the fee. Payment may be made online
Please check your certificate, not only the measurements, but all the
through MyIRC on
www.rorcrating.com, or by e-mail with card details. On-
details. If you find any errors, let us know as soon as possible so we can
line payment attracts slightly reduced fees (see page 32 for details).
correct them or explain why something is different from what you were
IRC is a self-measurement system, which means you do not have to get
expecting (eg. standard data).
the boat measured unless you need an Endorsed certificate (see opposite).
If we have any queries we will contact you, usually by e-mail if you have
The TCC
given an address. Once the certificate has been processed, it will be
So what do the clubs do with the TCC (rating) now that you have it? IRC is
mailed to you first class (or airmail) the same day. Note during Jan-Aug
a Time on Time system and the TCC is a simple multiplier which is applied
we have hundreds of ratings to process, so it can take 28 days – please
to the actual time taken to complete the race. This then gives a corrected
get your application in early.
time and the boat with the shortest corrected time wins. So: CT = ETxTCC
Please note the ‘expedited processing fee’ for late applications. If
where CT=corrected time and ET=elapsed time. The higher the TCC, the
your boat is a strict one-design recognised by IRC, you can use the One-
faster the boat is. It is simple to work out how much time boats give each
Design application form on page 33. Please read the rules before you
other – see our website for an explanation of how to do this.
ACCePTABle soUrCes oF dATA
irC is a self-measurement system. There is no requirement either to have your boat officially measured or weighed unless you want to,
your irC rule Authority requires it, or you need an endorsed certificate.
Generally, acceptable sources of data are
E Measurements supplied by an
■
Designed weight, or derived from
as follows:
authorised sail measurer
designed sailing displacement *
■
Owner or representative measurement
E Denotes acceptable for Endorsed The following are NeVer acceptable
certificate.
Weight
■
Registered tonnage
E Weighing on an approved single point
■
Weighing on built-in loadcell of crane
linear measurements (hull, rig)
loadcell, verified by an authorised measurer
■
Weighing on travel hoist
E Official measurement by an authorised
E Weighing on approved pressure pads,
measurer
verified by an authorised measurer
* Data from a sales brochure is usually
E ORCi measured data
E One-design data for approved IRC one-
acceptable, but we reserve the right to
E One-design data for approved IRC one-
design classes
use different data where we believe it to be
design classes
E Light class standard weight for
more accurate.
■
Owner or representative measurement
established production designs
■
Designer or builder data * ■
Class standard weight or sistership
GBr BoATs
■
Class standard hull data
weighed data
Please contact us if you wish to arrange
■
Weight derived from ORCi or other
measurement or weighing by a RORC
linear measurements (sails)
rating certificate (Endorsement at the
measurer. Charges will be as detailed in
E Official measurement by an authorised
discretion of the Rule Authority)
the Fees List (page 32), and we will require
measurer ■
Weighing on weighbridge is usually
credit card details or a deposit from you
E ORCi measured data
accepted unless we believe it to be in error
before measurement is undertaken.
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