In an eight-boat turnout in IRC One, Tim Goodbody's White Mischief from the Royal Irish Yacht Club repeated last Saturday's win in the AIB DBSC Summer Series by taking the gun again in race 13.
Breaking into the pack of J109s that occupied all but one of the top seven places was Fintan Cairn's Mills 31 Raptor in second place in the one-hour and ten-minute race.
A northeasterly sea breeze for the cruiser courses on Dublin Bay was eight knots in strength.
Overall series leader Lindsay J. Casey's J97 Windjammer was the Cruisers Two IRC division winner. The Royal St. George yacht took the gun from Jim McCann's Peridot.Third, in the four-boat race was Dick Lovegrove's Sigma 33, Rupert.
Aurelia was the winner of the three-boat Cruisers Zero race finishing ahead of Tim Kane's WOW.
In a three-boat turnout, Kevin Byrne's Royal St. George Formula 28 Starlet was the IRC 3 winner from Frazer Meredith's Asterix. Third was Edward Melvin's Ceol an Mara.
In the One Design keelboat fleets, James Gorman's Black was the winner of race 25 in a six-boat SB20 fleet. Winds on the one design course were north-easterly five or six knots.
The 31.7 fleet were competing for national honours in the RIYC-hosted championships on the Bay, and the Flying Fifteens were racing for the class south coast title at Dunmore East.
Full results across all DBSC classes are below.