Patrick Burke's Prima Forte from the Royal Irish Yacht Club was the winner by three seconds on corrected time in Saturday's AIB DBSC Saturday league on Dublin Bay.
Barry Cunningham's Cape 31 Blast finished in a corrected time of one hour 57 minutes and 30 seconds in the five-boat IRC Zero battle.
Chris Power Smith's J122 Aurelia was third on a time of 1:57:45.
Winds were 15 to 18 knots from the northeast.
The last-minute scrubbing of this weekend's J109 Nationals on the bay did not deter strong class participation in Saturday's DBSC racing, with Js taking the top three places in IRC One.
The overall series leader Timothy Goodbody in the RIYC-based White Mischief took another race win from the National Yacht Club's John Hall in Something Else. Paul Barrington's Jalapeno was third. Five boats competed.
In IRC Two, James McCann's Mustang Peridot won from David O'Flynn's Moonshine. Ian Bowring's Springer was third.
Results in all DBSC classes are below