Tokyo Olympics: Rowers Grace Prendergast, Kerri Gowler beat world record to qualify for women's pair final, men's eight win repechage to earn shot at gold

Rowers Grace Prendergast and Kerri Gowler have booked their spot in another final at the Tokyo Olympics, cruising through their women's pair semi-final and setting a new world record at Sea Forest Waterway.

Already part of the women's eight, through to their final, Prendergast and Gowler comfortably sealed their place to compete for gold in the women's pair.

Prendergast and Gowler couldn't have been more convincing in their semi-final victory, recording a new world record in the women's pair, getting across the line in 6m 47.41s.

The Kiwi duo reclaimed their world record, which was only beaten one race previously by Greece's Maria Kyridou and Christina Bourmpou.

The Russian Olympic Confederation (ROC) and Spain took the other two spots in the women's pair final, joining Greece, Canada and Great Britain as Prendergast and Gowler's competition.

The women's pair final at 12:30pm (NZ time) on Thursday, while Prendergast and Gower are also part of the women's eight final, raced at 1:05pm on Friday.

Elsewhere, the men's eight have also booked their spot in their final, winning their repechage.

Shaun Kirkham, Tom Mackintosh, Michael Brake, Matt MacDonald, Tom Murray, Phillip Wilson, Hamish Bond, Daniel Williamson were slow out of the blocks, as Great Britain took an early lead.

But the Kiwi crew showed their class to cut through the field from lane three, and finish with a time of 5m 22.04s.

Great Britain finished second, US third and Australia fourth to book their final spots, while Romania took fifth place to miss out. Germany and the Netherlands are the other two teams to contest the men's eight final.

The men's eight final will be raced at 1:25pm (NZ time) on Friday.

The two results come after the women's double sculls duo of Hannah Osborne and Brooke Donoghue took home silver in their final - New Zealand's second medal of the Games.

However, the men's pair of Stephen Jones and Brook Robertson struggled in the semi-final of the men's pair.

Taking to the water in the first of the two men's semi-finals, the Kiwi pair finished last, and dropped into the 'B' final.

Jones and Robertson came home with a final time of 6m 41.46s, nearly 28 seconds behind the winners, Marius Cozmiuc and Ciprian Tudosa of Romania. Denmark and Spain were the other two pairs to qualify for the men's final, while Australia narrowly missed out in fourth.