Paris 2024 Olympic campaigner Finn Lynch has won the 'Champions' Cup' at Foynes Yacht Club and sailed this year in the 17-foot Mermaid class.
Tricky light winds saw the schedule of races for the annual event cut short on the Shannon Estuary.
After just three races sailed in two days, the National Yacht Club's Lynch lifted the trophy with brother Rory and Carol Martin in the single-race final round.
The result denied Ger Owens of the GP14 class his chance of a three-peat, with the defending champion finishing seventh.
Second overall was the GP14s Ruan O'Tiarnaigh, Ross Nolan and Kate O Regan.
Third was J24 Euro Champion Cillian Dickson, Louis Mulloy and Packer Thorne.
In a racing series that was planned for two days, the first day saw no racing due to almost no wind. Despite concerns over the forecast for Sunday, all skippers decided to go ahead with a shortened series. After one quick race each, the top nine boats from both flights were chosen.
Owens, a triple Olympian, secured his place in the final quite easily, raising hopes of a three-in-a-row win. However, Lynch, with his skills in downwind sailing, won the race in the short final race, which was held just minutes before the deadline to start the last race expired.
The very light winds started to drop as the eastbound tide began to rise, which threatened to abandon the race.
However, since all nine boats were similarly impacted by the change in wind, the race continued. Lynch, with crew members Rory Lynch and Carol Martin, finished first with just seconds to go.
Next year's event will live up to its earlier 'All Ireland' moniker and is likely to head north to Belfast Lough, where the event may be raced in RS400 dinghies, according to Afloat sources.
Full results below