Annalise Murphy finished first and second in her two races at the Laser Radial World Championships in Germany to move into 27th place overall.
Racing continues until Saturday with the top 10 progressing to the medal race on Sunday.
Olympic-bound sailors Ger Owens and Scott Flanigan continued racing at the 470 World Championships in Barcelona.
It was a tricky day for the pair with unstable winds across the course as they placed 20th and 24th in their two races leaving them 22nd overall.
Racing was postponed today at the Finn World Championships due to fluctuating winds.
Event organisers will be under pressure to run three races tomorrow before the final fleet race and medal race on Friday.
Ross Hamilton still has an outside chance of qualifying for the Olympics. At 49th overall, he is currently the 10th nation eligible with the top six claiming a spot at the Games.