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    « Notes for 2014 Applications | Main | Notes on 2012 Applications »

    Notes on 2013 Applications

    IRC certificate issued by IRC South East Asia       
    Please read the following notes to help you get the most from your IRC rating.


    Endorsement:  A reminder that this is denoted by the ‘ENDORSED’ stamp at the bottom right of the certificate. Non-endorsed certificates will just have the red IRC Rating Authority stamp -  if you need Endorsement for an event you are entering, please contact us as soon as possible for advice.


    Headsail Upper Width & HSA:  You will notice some changes to the headsail data and calculated headsail area were made in 2013. Headsail Head Width (HHB) is no longer used, but Headsail Upper (7/8) Width (HUW) has been added. This has necessitated a change to the way Headsail Area (HSA) is calculated and you will notice that the 2013 HSA figure on your certificate may vary slightly from previous certificates with the same headsail measurements. However, this HSA formula update will have a negligible effect on rating.


    Rig Factor:  Due to developments in the RF formula, the RF on your 2013 may be slightly different from previous certificates. 


    Seahorse Magazine free issues!   On behalf of IRC certificate holders RORC have negotiated some excellent extra value into your certification...  All IRC certificate holders have an automatic subscription to every other issue of Seahorse Magazine in digital format.   Your subscription is activated by clicking on the link on the homepage of and using your certificate number and passcode (as it appears at the bottom your IRC certificate) as the login information.  


    • Validity dates are shown at the bottom of the certificate.  When your certificate expires you will automatically receive an invitation to renew, please make sure your contact details are kept up to date.

    • Please check the data and details on the certificate before signing it.   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.

    • 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).

    Amended or Trial certificates:  If you need to amend your certificate, or wish to run a trial certificate(s), the relevant forms can be found at
    Please use the appropriate form to apply for a certificate as this reduces the risk of omissions in data, or inputting errors.   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. 


    If you have an Endorsed certificate, remember that any amendments to rated data will require official measurement, please refer to our website especially regarding sail data and 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.  Please contact us for the relevant form. For 2013 we are offering Re-Registration for just £1.00 per metre LH!


    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.   The application form for this can be found at


    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 to see if it is required. Information about STIX & AVS can be found on the IRC website: Once obtained, the information will be added to your certificate free of charge as long as there are no other changes. 


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