After four races sailed at the Royal St. George YC Dragon hosted National Championships, Kinsale Yacht Club crews occupy the top three overall.
Cameron Good, Henry Kingston and Matthias Hellstern sailing Little Fella on 14 points, lead by two points overall on Dublin Bay from clubmates Colm Dunne, Colm Daly and Daniel McCloskey in Ghost.
Third is KYC's MarJ (Adrian Bendon, Eoghan O Mahony and Jeff Cochrane), the recent winners of August's Glandore Harbour's Lar Casey Cup.
Conditions on the Dun Laoghaire race track have so far been light to medium southeasterlies and relatively flat seas.
The top Dun Laoghaire boat is the host club's Jaguar Sailing Team of Martin Byrne, Adam Winkelmann and John Simms, who are on an equal 20 points with MarJ.
Racing continues on Saturday with races five and six and concludes on Sunday morning with one final race.