Two race wins on the final day for Oisin Pierse (Royal Cork Yacht Club) sealed the IODAI Optimist Trials at Ballyholme Yacht Club in the 49-boat fleet on Sunday.
The Cork Harbour talent finished the youth sailing series with five race wins from a total of 11 sailed giving him 19 points overall.
Oisin is 14-years-old and has sailed out of the Royal Cork since he was eight. He also sails occasionally in Fenit, County Kerry. Oisin attends the Gaelcholáiste in Carrigaline and lives overlooking the mouth of Cork Harbour.
Second on Belfast Lough was Caoilinn Geraghty-McDonnell from the RStGYC who had kept the pressure on the Crosshaven youth throughout the championships.
Howth Yacht Club's Harry Dunne displaced Carolina Carra of the RSGYC on the final day to take third place overall.
Based on the weekend events, the IODAI will now decide on the composition of the Irish squads for this summer's World and European championships.