The Australian cruised into the lead after 500 metres of the race and maintained her advantage to claim victory in a time of 7min 23.650sec, with the result seeing her claim one of the six spots in the final.

Brennan emerged as the fastest qualifier in the event with New Zealand’s Emma Twigg, the 2014 world champion, clocking 7:26.050 to achieve the second quickest time.

Reigning European champion Magdalena Lobnig of Austria will hope to feature strongly in the final having qualified in a time of 7:26.940.

Croatia’s Damir Martin continues to impress in the men’s single sculls event ahead of Rio 2016, after he finished two seconds ahead of New Zealand’s Olympic champion Mahe Drysdale in 6:45.820 to win their semi-final.

Having won at the first World Cup of the season, Martin could emerge as a favourite to win Olympic gold should he secure another gold in Poznan.

Britain’s Alan Campbell triumphed in the second semi-final in a time of 6:55.040, as the London 2012 Olympic bronze medallist continues to hone his preparations for this year's Games.

New Zealand’s Eric Murray and Hamish Bond remain the dominant force in the men’s pair after winning their semi-final in a time of 6:16.810.

It saw the duo, who have been unbeaten for seven years, end four seconds faster than Nathaniel Reilly-O'Donnell and Matthew Tarrant.

The British pair will be expected to be the closest challengers to Murray and Bond tomorrow, but face a tough test to overhaul the reigning Olympic and world champions.

Further success for New Zealand could come in the lightweight women's single sculls after world champion Zoe McBride clocked 7:34.700 to qualify fastest for tomorrow’s final.

Junior world champion Marieke Keijser and fellow Dutch rower Elisabeth Woerner finished in 7:38.540 and 7:43.570 respectively to also advance.