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Quantum Sails Ireland Go Through the IRC Changes for 2024

26th October 2023
Samatom, a Grand Soleil 44 with a Quantum Blast reacher set. New 2024 IRC rule changes will now have Jib number penalties. A Blast reacher is regarded as a Jib.
Samatom, a Grand Soleil 44 with a Quantum Blast reacher set. New 2024 IRC rule changes will now have Jib number penalties. A Blast reacher is regarded as a Jib Credit: Michael Chester

Mark Mansfield of Quantum Sails Ireland goes through the major changes that will affect IRC racing boats in 2024. This comes after the recent IRC Conference when many of these changes were voted through.

The 2022 IRC conference decided on two major changes that would not come into effect till the 2024 season, and further details of these were provided recently. In reality, apart from some other small changes, these two major changes are what will mainly affect most owners in 2024.

Change #1- Jib numbers

Like what happened with Spinnakers a few years ago, there is now a rating advantage/disadvantage depending on the number of Jibs that are carried. With spinnakers in the past, it was approx. 1 point per extra spinnaker carried over a base number of 3.

In recent times, you also got a 1 point approx Improvement per spinnaker if you carried less than three spinnakers. For bigger boats, it might have even been 2 points per spinnaker.

Now, a similar change is happening for Jibs for the 2024 season. The examples below were provided by the IRC to indicate how this change would affect various designs. However, it did not give us a base IRC figure for each design before the new Jib limitations were added. It would appear that for, say, a 30-foot boat, if you carried 3 jibs then there would be no change, if a 40-foot boat, it may be 4 jibs with no change and if a 50-footer, it may be 5 jibs.

This is in addition to a storm Jib and what is referred to as an OSR Heavy weather jib (normally about a J3.5 size with some extra attachment specs).

Staysails, Blast reachers etc, would likely all be counted as one of these Jib numbers.

So how will this affect most boats?

  • For boats that carry a J1, J2 and J3 normally, there will be little difference if you carry all 3 sails.
  • If, however, you mainly just do one-off day races, then you could go down to 2 jibs on your cert and select them each morning of a race depending on the weather.
  • If you were a boat that only carried, say, a J1.5 and a J3, then you could look at going for just one jib on your cert for day races.
  • Likewise, if you have an overlapping setup and normally just have a G1 and a J3, you could look at just taking one sail on a day race.
  • If you were an offshore-orientated boat, with 3 jibs, a spinnaker staysail and a Blast reacher—then expect a rating increase if all are carried.

Remembering of course, if you race in a series on consecutive days, then you cannot change sails from day to day.

Last year IRC allowed boats to now have 2 certs each year and nominate which cert is used. Up till now, these double cert options were generally only being used by boats which race inshore as well as offshore, so maybe more Spinnakers needed offshore when a different range of condition might be encountered and then another cert with fewer spinnakers inshore. Now, with the jib limitation rules, expect the number of boats which have two certs to rise considerably. Even for inshore-based boats, they might go for a cert with just 2 jibs and one spinnaker for lighter winds and then have a second cert with 3 jibs and 3 spinnakers for heavier or mixed wind conditions. It could be that on a 40-footer there might be a difference of 4 points between each cert, and that is approx. 15 seconds per hour—not insignificant.

RORC Chart show in number of headsails onboardChart showing number of headsails onboard/ratings for different yacht designs Courtesy RORC

Change #2 - For Endorsed events, sail measurement stamps are required. 

(This change was agreed upon in 2022 but only to commence in the 2024 season.)

All sails certified from 1/1/2024 shall have a UMS/IRC sail stamp or other certification note. So, new sails need a stamp from next January as may larger sails—based on the NOR.

Sails measured before 1/1/2024 will not now also need to be measured with a measurement stamp/sticker on the sails unless the NOR of an event requires it. So, say, the 2024 ICRA Nationals or 2024 IRC Europeans in Dun Laoghaire decide to have this, then maybe the largest Jib or spinnaker may need a measurement sticker, depending on what the NOR says.

One other change that has come out of the 2023 IRC conference is that page 2 of the IRC cert will now be available for all boats so that sails carried etc, can be inspected. No details yet of that Weblink.

Quantum Sails Ireland has a wealth of knowledge and experience dealing with rating optimisations, so please feel free to Contact Mark or Yannick with any queries on sails or ratings

For further info on the 2024 rule changes here

Quantum Ireland is very happy to discuss individual requirements with owners.

We offer a full-service loft at Oranmore in County Galway to look after all our new and existing clients.

Please contact us for advice and quotes

Mark Mansfield: [email protected] Tel 087 2506838
Yannick Lemonnier: [email protected] Tel: 087 628 9854

Published in Quantum Sails
Mark Mansfield

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Mark Mansfield

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Four-time Olympian Mark Mansfield is a Professional Sailor. More on Mark here

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