Kiel Week is one of the biggest regattas outside of world and European championships and, apart from those involved in Bermuda with the America's Cup, most of the world's top sailors are in Germany.
Tonight (NZ time) is the last day or qualifying for the 69 boats in the 49er fleet before the top 25 move through to the gold fleet and five races before the double-points medal race.
There are also 48 in the 49erFX fleet and Olympic silver medallists Alex Maloney and Molly Meech were in third after the first day of racing, collecting one first, a fourth and a 17th.
"We did a lot right on the race course today and Molly and I feel like we can take a lot forward going into tomorrow," Maloney said.
"One of our goals for this event was getting off the start line and being able to control our space on the line and afterwards with a good lane. Tomorrow we are going to look at being a bit more assertive again and just owning the start line and having good performances around the course."
Porebski and Rippey are chasing consistency, and more breeze is forecast which should make life easier for the fleet.
"We really want to go out and get four good races tomorrow and keep in touch with the front, and hopefully stay in the lead," Rippey said.
Olympian Andrew May was 16th after the first day of racing in the 2.4mR Para World Sailing Championship after posting a 17th and an 18th.
New Zealand results and standings at the Kiel Week regatta in Germany overnight (NZT):
49er (69 boats)
1st: Josh Porebski / Trent Rippey (NZL) (4) 1 1 - 2 points
2nd: Robert Schiedt / Gabriel Borges (BRA) 1 2 (7) - 3 points
3rd: Erik Heil / Thomas Plossel (GER) (15) 1 3 - 4 points
49erFX (48 boats)
1st: Victoria Jurczok / Anika Lorenz (GER) (26) 1 1 - 2 points
2nd: Annemiek Bekkering / Marieke Jongens (NED) 1 3 (6) - 4 points
3rd: Alex Maloney / Molly Meech (NZL) 4 1 (17) - 5 points
2.4mR Para World Sailing Championship (41 boats)
16th: Andrew May (NZL) 17 18 - 35 points