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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.

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Show news Sydney Harbour Regatta overall
Drama and then winners announced
Posted today at 9:49 am Sydney Harbour Regatta Day 2
There is plenty to celebrate here with so many women involved out racing
Posted today at 5:23 am 52nd St. Thomas International Regatta Preview
IRC, CSA & One-Design Classes Invited
Posted on 7 Mar Countdown to Antigua Sailing Week 2026
One of the Caribbean's most recognizable sailing events for more than half a century
Posted on 7 Mar Sydney Harbour Regatta Day 1
Racing away in a fluky light nor 'easterly breeze
Posted on 7 Mar 2026 Rolex China Sea Race finish
Team Alive-Rampage takes Line Honours
Posted on 6 Mar 2026 Rolex China Sea Race day 2
It was a tough night for some entries
Posted on 5 Mar Rolex China Sea Race 2026 underway
A spirited start, but a slow exit from the harbour
Posted on 5 Mar The Henri-Lloyd Warsash Spring Championship
A new format and a new energy in 2026
Posted on 4 Mar 2026 Rolex China Sea Race underway
Asia's preeminent offshore sailing event set sail today at 1120hrs from Victoria Harbour
Posted on 4 Mar Pallas Capital Gold Cup Preview
Admiral's Cup programs add international edge to the racing
Posted on 4 Mar 2026 Rolex China Sea Race starts Wednesday
This year's lineup features entries from all over the world
Posted on 3 Mar 2026 Rolex Middle Sea Race Registration Open
One of offshore sailing's most celebrated challenges
Posted on 2 Mar 2026 RORC Caribbean 600 - Worthy of its legacy
Each year the subtle changes to the trade winds write a different script
Posted on 28 Feb Get your entries in for the Gold Coast Mackay Race
This weekend marks 150 days till the big dance north
Posted on 27 Feb Leopard 3 IRC overall RORC Caribbean 600 winner
No remaining competitor able to better her corrected time
Posted on 27 Feb 2026 RORC Caribbean 600 - IRC Two Report
Richard Dilley's Grand Soleil 46 Belladonna claims IRC Two victory
Posted on 27 Feb Cork Week Expands Coastal Fleet Eligibility
To Welcome More Competitors
Posted on 27 Feb 2026 RORC Caribbean 600 - IRC One Report
Nine minutes on the clock for Rikki's triumph
Posted on 27 Feb 2026 RORC Caribbean 600 - Catamaran capsizes
Cata Sensation, a TS42 catamaran RORC Caribbean 600 race, has capsized in 40kt winds
Posted on 26 Feb 2026 RORC Caribbean 600 - IRC Zero Report
Palanad 4 edges Ino Noir in Zero showdown
Posted on 26 Feb Come join the Australian Women's Keelboat Regatta
Continuing to thrive and attracts some of Australia and New Zealand's top talent
Posted on 26 Feb 2026 RORC Caribbean 600 Monohull Line Honours
One of the finest 100-foot match races the event has seen
Posted on 25 Feb Black Jack 100 claims Caribbean 600 Line Honours
After a prolonged duel with Leopard 3
Posted on 25 Feb 2026 RORC Caribbean 600 Monohull Line Honours
Black Jack 100 takes Line Honours in an elapsed time of 01 Day 20 Hrs 31 Mins and 36 Secs.
Posted on 25 Feb Doyle Sails Round North Island Two Handed Race
Twenty six yachts are currently entered for the 2026 edition of the Doyle Sails RNI Race
Posted on 25 Feb What 5.5 Tonnes of Forestay Load Does to an Oyster
Balancing power and safety with Cyclops Marine
Posted on 25 Feb Pittwater to Coffs: Return of the two-handers
Some notable two-handers are set to return for the 40th edition
Posted on 25 Feb Caribbean 600, MGR, Bacardi Winter Series
Trade-winds racing at the Caribbean 600 and Mini Globe Race, Miami buoy racing
Posted on 24 Feb 2026 RORC Caribbean 600 Day 2
Duels in the Trades
Posted on 24 Feb
Links
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Photos

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Seeking Alpha at full throttle - 2026 Nautilus Marine Insurance Sydney Harbour Regatta
© Brett Costello / MHYC Nine Dragons owner Bob Cox - 2026 Nautilus Marine Insurance Sydney Harbour Regatta
© Brett Costello / MHYC Some of the Performance division under the Sydney Harbour Bridge - 2026 Nautilus Marine Insurance Sydney Harbour Regatta
© Brett Costello / MHYC The Cavaliers on course - 2026 Nautilus Marine Insurance Sydney Harbour Regatta
© Brett Costello / MHYC Gymnastic bow duties 2 on Condor - 2026 Nautilus Marine Insurance Sydney Harbour Regatta
© Marg Fraser-Martin Gymnastic bow duties 4 on Condor - the climb is not a short one - 2026 Nautilus Marine Insurance Sydney Harbour Regatta
© Marg Fraser-Martin Gymnastic bow duties on Condor - 2026 Nautilus Marine Insurance Sydney Harbour Regatta
© Marg Fraser-Martin Up close and personal with Condor - 2026 Nautilus Marine Insurance Sydney Harbour Regatta
© Marg Fraser-Martin Gymnastic bow duties 3 on Condor - 2026 Nautilus Marine Insurance Sydney Harbour Regatta
© Marg Fraser-Martin Lisa Callaghan at the helm of Mondo - 2026 Nautilus Marine Insurance Sydney Harbour Regatta
© Brett Costello 46th St. Maarten Heineken Regatta Day 3 - Privateer leads the CSA1 fleet and is undefeated heading into the final day of racing
© Laurens Morel Ambition and Mittere crossing tacks - 2026 Nautilus Marine Insurance Sydney Harbour Regatta
© Brett Costello Chris Dare and crew happy on Tassie entry Ambition - 2026 Nautilus Marine Insurance Sydney Harbour Regatta
© Brett Costello Daguet 2 takes aim at the Harbour Bridge - 2026 Nautilus Marine Insurance Sydney Harbour Regatta
© Brett Costello Open Division 2 hard at work - 2026 Nautilus Marine Insurance Sydney Harbour Regatta
© Brett Costello 46th St. Maarten Heineken Regatta Day 2 - The Around the Island Race is a favorite amongst sailors and visitors alike
© Laurens Morel 46th St. Maarten Heineken Regatta Day 2 - More Zessin' in CSA6 delivered strong downwind lefs to finish second in their class today, maintaining their overall lead
© Laurens Morel 46th St. Maarten Heineken Regatta Day 2 - Fleets converged at a busy and action-packed first windward mark during the Around the Island Race, shortly after starting in Simpson Bay
© Laurens Morel 24 female sailors from Christchurch Sailing Club sail with the Tallships Youth Trust
© Clare de la Feuillade 24 female sailors from Christchurch Sailing Club sail with the Tallships Youth Trust
© Clare de la Feuillade 24 female sailors from Christchurch Sailing Club sail with the Tallships Youth Trust
© Clare de la Feuillade 24 female sailors from Christchurch Sailing Club sail with the Tallships Youth Trust
© Clare de la Feuillade 24 female sailors from Christchurch Sailing Club sail with the Tallships Youth Trust
© Clare de la Feuillade 24 female sailors from Christchurch Sailing Club sail with the Tallships Youth Trust
© Clare de la Feuillade 24 female sailors from Christchurch Sailing Club sail with the Tallships Youth Trust
© Clare de la Feuillade 24 female sailors from Christchurch Sailing Club sail with the Tallships Youth Trust
© Clare de la Feuillade Caipirinha, GBR 7825, at Antigua Sailing Week
© Paul Wyeth / ASW Patrick Holloran and his crew of family members sail on Caipirinha
© Takumi 2024 Howth Brass Monkeys Spring Series final race
© Karolina Kernan Chris Horrigan receives the Peter Huntley Memorial Trophy - Howth Brass Monkeys Spring Series
© Karolina Kernan
Velocitek March 2026Lloyd Stevenson - AC INEOS 1456x180px BOTTOMHyde Sails 2024 - One Design
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