Information for 2019 Revalidations

If you have not already done so, please read the 2019 Rules and Definitions which are online at

https://www.ircrating.org/ - changes for 2019 are marked with a sidebar.

There is no printed IRC 2019 Yearbook – please see www.rorcrating.com for more information.

Validity datesare shown at the bottom of the certificate. When your certificate expires you will receive an invitation to renew it, please make sure your contact details are kept up to date by emailing us with any changes to your postal or email address.

Please check the data and details on the certificate.   If there is anything you think is incorrect please contact us; however for production designs remember some standard data may have been used which differs from that submitted (usually hull data).

Ratings may go up, down or stay the same from year to year, depending on changes and developments in the maths behind the rating calculation.  This is developed on an annual basis and is generic for certain design characteristics. Please see the additional page at the end of this document for more information about changes for 2019. 

Age Allowance is automatically applied to boats over 3 years old, but it is a small part of the calculation. (It cannot be assumed that the rating will reduce each year because of age allowance).

Rig Factor: As well as the rig configuration, varying rig and sail measurements can also have an impact on the RF calculation and may be the reason RF differs between two boats with the same rig controls listed on the certificate.   Mast material is rated separately and is not part of the RF calculation.

Crew limitations IRC Crew Number is not variable by a boat and has no effect on TCC. However, note that the default limit is the crew weight (shown next to the crew number on the cert), so you are limited to that as a maximum weight unless the Notice of Race for the event modifies IRC Rule 22.4.

Endorsement:  Endorsed certificates show a ‘Rating Authority ENDORSED’ stamp at the bottom right of the certificate.   Other certificates show a ‘Standard’ stamp.  If you need Endorsement for an event you are entering, please contact us as soon as possible for advice.

CERTIFICATES

Amended or Trial certificates:   We cannot accept data by telephone.   Please make sure you complete the ‘Source of Information’ to avoid any delays, thank you.

Note that there are limits to the number of trial certificates that are allowed, you can find details on the IRC website. http://www.ircrating.org/technical-a-certification/certificates-extra-info.

We reserve the right to refuse to amend a certificate if we believe its purpose is to take advantage of a forecast eg. increasing sail for a race that is forecast to be light winds.

If you have an Endorsed certificate, remember that any amendments to rated data will require official measurement, please talk to us for advice if necessary.

Change of Ownership:  If you sell your boat and the new owner wishes to race it, or if you buy a boat with a current IRC certificate, then Re-Registration is required.  

Short-handed certificates:  If you do short-handed (1 or 2 people) racing, and your boat is in a different configuration for this, you can apply for a separate Short-Handed certificate, see IRC Rule 8.2.1.  There is no rating change just for a reduced number of crew.

STIX and AVS Stability data :  If you are planning to enter an event that is OSR Cat 3 or over you may need to have STIX & AVS (stability) data on your IRC certificate. Please check the specific events you are entering, to see if it is required. Information about STIX & AVS can be found on the IRC website: http://www.ircrating.org/technical-a-certification/sssn-a-stix. Once obtained, the information will be added to your certificate free of charge as long as there are no other changes. STIX & AVS can be calculated by the Rating Authority from an ORC Stability and Hydrostatics Datasheet (for the boat in its current condition).