The men's pair of Hamish Bond and Eric Murray won their heat by more than 13 seconds to progress. It was a convincing start to a campaign which, if successful, will see them hold the outright record for the longest streak of international regatta wins with 16.
"The race pretty much went to plan," Murray said. "We aimed to be as efficient as possible, it is never easy. We have a few more gears depending on the pressure that comes at us."
The women's pair of Rebecca Scown and Kayla Pratt are also through to the semi-finals after placing second behind the Netherlands.
Lightweight women's double scullers Julia Edward and Lucy Strack finished second, 1.03s behind Britain to progress as well.
"The conditions were tough," Strack said. "The sun was beating down. We had a good first 1000m, it was a close finish and they just got us in the last 500m."
An acclimatisation process of almost a fortnight appears to be paying off for the New Zealanders but it remained a struggle for the bigger crews.
The men's four were fourth and both quads were fifth in their respective heats as they each tried to improve on disappointing results in the European season.
The men's and women's double sculls, the lightweight men's four, women's eight and single race heats today.
Andrew Alderson travelled to South Korea courtesy of Rowing New Zealand and its principal partner Bankstream