The German overcame a strong Chinese challenge to beat Wang Aichen in the first race of the day before overcoming Liu Chunzhuang in the second race.

It means he leads with just seven points after five races, although his black flag disqualification result in the first race is currently discarded, meaning that another bad result would affect his standing.

Liu lies second on 14 points after discarding a 10th place finish in the first race of the day, while Wang is third a further two points back.

After light winds on the opening day on Wednesday (June 8) there were near-perfect conditions yesterday.

But gentler breezes once again today on the London 2012 Olympic course caused the schedule to be pushed-back and postponed altogether in some classes.

Britain enjoyed a good day on home waters, with Dylan Fletcher and Alain Sign enjoying first and second place finishes in two 49er races.

The duo, who have been selected for the British Olympic squad, lead on 17 points and are five clear of Poland's Lukasz Przybytek and Pawel Kolodzinski.

Luke Patience and Chris Grube won the sole 470 race of the day by a mammoth 50 seconds to snatch the lead with nine points.

Croatia's Sime Fantela and Igor Marenic lie second on 10, with Carl-Fredrik Fock and Marcus Dackhammar of Sweden a further four behind.

Sophie Weguelin and Eilidh McIntyre also edged compatriots Hannah Mills and Saskia Clark for a home lead in the women's 470 class.

But Giles Scott was edged out of the lead in the Finn class, albeit to team-mate Ben Cornish, who took a slender two-point lead into the weekend.

Racing is due to resume tomorrow and conclude on Sunday (June 12) with the medal race.