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IRC

IRC

IRC is a rating rule to handicap different designs of keelboats allowing them to race together. Each boat’s rating (her ‘handicap’) is calculated using measurements of the boat; her length, weight, draft, sail area, etc. The resulting time corrector, the boat’s ‘TCC’, is her handicap. After a race, each boat’s elapsed time (the time she has taken to complete the course) is multiplied by her TCC to calculate her corrected time (her race time making allowance for the characteristics of the boat). The boat with the shortest corrected time is the winner of the race.

&copy; Paul Wyeth / <a target="_blank" href="http://www.pwpictures.com">www.pwpictures.com</a> © Paul Wyeth / www.pwpictures.com
Show news RORC Caribbean 600: Fierce duels and flying starts
Racing under way in spectacular style in Antigua from Fort Charlotte
Posted today at 3:36 am Maxi yacht showdown set for RORC Caribbean 600
The monohull line honours fight will be between the Black Jack 100 and Leopard 3.
Posted on 23 Feb Video preview of the 2026 RORC Caribbean 600
A spectacular international fleet of 56 boats will line up for the start
Posted on 23 Feb 2026 Goolwa-Milang Regatta Weekend preview
South Australia's iconic freshwater races unite for long weekend regatta
Posted on 23 Feb Geographe Bay Race Week 2026 overall
All the elements of a great regatta come together in glorious synchronicity
Posted on 23 Feb Sevenstar Welcome Party
Caribbean vibes before the RORC Caribbean 600
Posted on 22 Feb Crown Series Bellerive Regatta day 3
Champions decided in Crown Series Regatta
Posted on 22 Feb Records crown RORC Nelson's Cup finale
The race around Antigua was blessed with superb conditions
Posted on 21 Feb RORC Caribbean 600 - How to follow the race
A spectacular international fleet of 57 boats will line up for the start
Posted on 21 Feb Crown Series Bellerive Regatta Day 2
Sailors enjoyed consistent breezes and a sunny summer afternoon
Posted on 21 Feb Playbook & preparation for the RORC Caribbean 600
Pressure over promise: Extracts from Brian Thompson's 600 Playbook
Posted on 20 Feb Last chance for early bird entries
For historic 2026 Royal Escape Race
Posted on 20 Feb Geographe Bay Race Week 2026 day 4
Famed WA 'wind whisperer' Ron Jensen brings the breeze with him
Posted on 20 Feb 2026 RORC Nelson's Cup Day 2
Battles and razor-thin margins
Posted on 19 Feb RORC Caribbean 600 - From titans to trailblazers
Nearly 500 sailors from 40 different countries around the world will be competing
Posted on 18 Feb Geographe Bay Race Week 2026 day 3
A cheeky blue staffy named 'Jed' steals the 'wind remote' overnight
Posted on 18 Feb 2026 RORC Nelson's Cup Day 1
Squalls, sunshine and protest shape the opening salvo
Posted on 18 Feb Geographe Bay Race Week 2026 day 2
Racing on the sportsboat course blasted off right on schedule at 10am
Posted on 17 Feb Champs lure players to Sydney Harbour Regatta
The 2026 Nautilus Marine Insurance Sydney Harbour Regatta is hosting three major class championships
Posted on 16 Feb Anticipation builds for Rolex China Sea Race
Anticipation is building as the Rolex China Sea Race prepares to get under way
Posted on 16 Feb Geographe Bay Race Week 2026 day 1
Racing in full swing on the stunning waters off Busselton
Posted on 16 Feb Antigua Racing Cup: Simple to add, hard to miss
Welcoming all comers who are seeking high quality racing with minimal additional logistics
Posted on 14 Feb Strong Start to 2026 for IRC Rating Rule
Issuing certificates to over 660 northern hemisphere boats for the new season
Posted on 14 Feb Service Health Check from Cyclops
A new service option for existing customers
Posted on 13 Feb Cowes Week opens entries for Bicentenary regatta
The iconic sporting events prepares to celebrate its 200th anniversary
Posted on 13 Feb Aramex Dubai to Muscat Offshore Race overall
Irish crew clinches back-to-back overall victory
Posted on 12 Feb RORC Nelson's Cup Series 2026 Preview
Race ready in Antigua
Posted on 12 Feb Celebrating 100 years at Bellerive Yacht Club
One of Tasmania's premier locations for boating
Posted on 12 Feb Pittwater to Coffs: First in best dressed!
Entries opened for the 40th edition of the Pittwater to Coffs Harbour Yacht Race
Posted on 11 Feb Three days to wait after 199 (and a half) years
Entries set to open for the 200th Cowes Week annual regatta
Posted on 10 Feb
Links
Local fleet websites: Campaign websites:

Photos

Show photos from

IRC Super Zero: Mills 72 Balthasar, Black Jack 100 and Leopard 3 - 2026 RORC Caribbean 600
© Tim Wright / www.photoaction.com Frédéric Puzin's Carkeek 54 Daguet 5 (FRA) and Niklas Zennström's Carkeek 52 Rán (SWE) - 2026 RORC Caribbean 600
© Tim Wright / www.photoaction.com Swan 56 Azahar (FRA) and RP42 Rikki (USA) in IRC One - 2026 RORC Caribbean 600
© Tim Wright / www.photoaction.com The IRC Two fleet heads off for their first night at sea - 2026 RORC Caribbean 600
© Tim Wright / www.photoaction.com The 2026 RORC Caribbean 600 got underway in spectacular style in Antigua from Fort Charlotte
© Tim Wright / www.photoaction.com 2026 RORC Caribbean 600 - Fierce Duels and Flying Starts for the 17th edition in Antigua
© Tim Wright / www.photoaction.com 2026 RORC Caribbean 600 - Fierce Duels and Flying Starts for the 17th edition in Antigua
© Tim Wright / www.photoaction.com Morpheus, DNR and Afazak Impulse in IRC One - 2026 RORC Caribbean 600
© Tim Wright / Photoaction.com Martinique Horizon and FPFP-TP (FRA) - 2026 RORC Caribbean 600
© Tim Wright / Photoaction.com Mach 50 Palanad 4 (FRA), skippered by Antoine Magre - 2026 RORC Caribbean 600
© Arthur Daniel / RORC Revolver won her last event - Nautilus Marine Insurance Sydney Harbour Regatta
© Andrea Francolini / MHYC Sydney Harbour Open Division 1 start - Nautilus Marine Insurance Sydney Harbour Regatta
© Andrea Francolini / MHYC Zeus II (with kite) - Nautilus Marine Insurance Sydney Harbour Regatta
© Marg Fraser-Martin Performance Spinnaker Division 2 - Nautilus Marine Insurance Sydney Harbour Regatta
© Andrea Francolini / MHYC RORC Caribbean 600 map
© RORC 2026 RORC Caribbean 600
© RORC Goolwa-Milang Regatta Weekend
© Vipop.C Goolwa-Milang Regatta Weekend
© Nathan Richmond Geographe Bay Race Week 2026
© TP72 Nautical Images Geographe Bay Race Week 2026
© TP72 Nautical Images Geographe Bay Race Week 2026
© TP72 Nautical Images The team on the Committee Boat at Geographe Bay Race Week 2026
© TP72 Nautical Images Chaos at the rounding mark in the Performance Cruising Keelboats
© Jane Austin Andrew Jones from the Port Dalrymple Yacht Club has a tight knit crew onboard Cutting Edge
© Jane Austin The Crown Series fleet before the wind wreaked havoc on the final day of sailing
© Jane Austin Bruce Chafee's RP42 Rikki: IRC One victory in the Nelson's Cup Series & RORC Antigua 360 Race
© Arthur Daniel / RORC Mills 72 Balthasar - IRC corrected time winner of the Antigua 360 Race
© Tim Wright / RORC Sam Hall's J/125 Jackknife - Overall winner under IRC - RORC Antigua 360 & RORC Nelson's Cup Series
© Tim Wright / Photoaction.com Frederic Puzin's Daguet 5 - winner IRC Zero in the Antigua 360 Race & 2nd overall in the Nelson's Cup Series
© Tim Wright / RORC Farr 100 Leopard 3 sailed by Joost Schuijf set a new Monohull record (elapsed time)
© Arthur Daniel / RORC
Elvstrom Sails AustraliaA+T QBD7Velocitek 2026
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