All four New Zealand crews picked up medals in Lucerne, including Logan Ullrich, who registered his maiden single sculls win.
The men’s pair and double both claimed silver while the women’s four nabbed bronze.
Ullrich has made rapid progress.
Two weeks ago, he failed to qualify for the A final at the opening world cup regatta.
Ullrich, who won an Olympic silver medal in the four last year, has switched to the single and after just six races at the international level, he has won gold.
"I’ve dreamed about this for years," he told World Rowing.
"I didn’t think it would come this quickly in my sculling career. I’m just blown away."
Coach Mike Rodger was also stunned by Ullrich’s rapid rise.
"He’s phenomenal," Rodger said.
"You’ve got to remember he hasn’t really rowed a single at all, but because he’s so green, he just takes everything in, listens and makes the changes."
Former Otago Boys’ High School student Ben Mason teamed up with Finn Hamill and they again showed their ability to attack over the second half of the race to win silver in the men’s double.
The duo had only raced together three times but are now being talked about as one of the crews to watch ahead of the world championships in China in September.
Men’s pair Ben Taylor and Oli Welch were pipped by Romania’s experienced combination of Florin Lehaci and Florin Arteni, the European champions, and had to settle for silver.
One of the highlights of the racing over the weekend was the progress of the women’s four in winning bronze.
They have had a disrupted start to their campaign with bow seat Juliette Lequeux, from the Otago University Rowing Club, unable to row at the Varese round of the world cup because of illness.
Lequeux said they had stepped up on their row in the heats.
"We fell apart a bit in the last 750 on Friday," Lequeux said.
"We decided to sit on our rhythm the whole race today. After our start, we sat one split lower than Friday and it just felt easy because we did it all together."
— APL
