Fellow world champions Juliette Haigh and Rebecca Scown also won their heat, but in a significantly slower time, 7:15.29 than the other heat winners, Britain's Helen Glover and Heather Stanning (7:05.93) and Americans Erin Cafaro and Eleanor Logan (7:06.40).
Lightweight double scullers Storm Uru and Peter Taylor were fastest semifinal qualifiers out of their heats, in 6:25.87.
Olympic canoeing hopeful Teneale Hatton progressed comfortably into the semifinals of the K1 500m at the World Cup regatta in Duisburg, Germany last night.
Hatton, who has yet to be named in the New Zealand team for London, finished fourth in her heat in a time of 1:59.651, in a race in which the first seven finishers progressed.
Hatton's time was 18th best in the heats but she was untroubled in a race won by Italy's multi-medalled veteran Josefa Idem in 1:59.651.
Men's K1 1000m representative Ben Fouhy finished second in his heat. He recorded 3:38.846, crossing fractionally behind quality Norwegian paddler Eirik Veraas Larsen, the Athens Olympic champion of 2004, the year Fouhy won the silver medal. Larsen won last night by a mere .495s.