A series of races is conducted using the IRC rating rules. After the regatta has started, the IRC rating certificate for a boat is found to be defective due to an error made by the Rating Authority.
G.5.5 Q&A 2012-001
Published: 23 January 2012
Which one of 1, 2 or 3 is the aft head point in this diagram?
“A”, “B” and “C” are all parts of the leech and the aft head point shall be taken at the point where the extension of “A” intersects with the line through the head point and 90°to the luff.
“1" is the aft head point in this case. Applicable ERS rules: G.4.2 and G.5.5
Several Sailmakers have intentionally attempted to circumvent IRC rules 2.4 and 2.5 by developing headsail foot shelf profiles that artificially reduce the headsail measurements, reducing the IRC rating without a corresponding reduction in performance. IRC Rule Notice 2012/02 addresses this issue with the introduction of Headsail Foot Shelf.
The 2012 revalidation form is now available in the download section.
IRC 2011 Certificates will expire on the 31st May, and will switch over to 2012 from the 21st May 2012.
Please note that NO 2011 certificates can be run or updated after this date.
AS NO AMENDMENTS OR NEW CERTIFICATES CAN BE ISSUED -
KOH SAMUI REGATTA (26th May - 2nd June) WILL REQUIRE 2012 CERTIFICATES.
We often have questions about setting furling headsails. The IRC Rule for a single furling headsail says: "The boat has a complete headsail furling system". Can the sail be tacked on deck instead of to the furling drum and still be able to enjoy the rating credit?"