Great Britain's Megan Pascoe and Helena Lucas lie second and third after the first day of sailing in the 24MR class at the Delta Lloyd Regatta in Medemblik, Holland.
The pair trail home favourite Thierry Schmitter, who won the first and last of Wednesday's five races and was second in race two.
Pascoe won the fourth race and had three third-placed finishes, while Lucas was third and then second in the final two races. There are five more races to come before the medals are awarded.
The Irish crew of John Twomey, Anthony Hegarty and Ian Costello lie sixth in the Sonar class, with Great Britain's John Robertson, Hannah Stodel and Steve Thomas retiring from the event. Britain's Ben Cornish is down in 26th in the Laser.