Coleraine's Alan Campbell and Richard Chambers have reached their respective finals at the third World Cup regatta of the season in Lucerne.
They came through their semi-finals safely on Lake Rotsee on Saturday.
However, there was disappointment for Peter Chambers as the Great Britain lightweight four missed out on Sunday's final after finishing fourth.
In the men's single sculls, Campbell finished second to Mindaugas Griskonis from Lithuania.
Campbell, 32, had missed much of the early season racing because of injury before returning to international action with fifth place in last month's World Cup event in Varese.
In the semi-final, the Northern Ireland man was led off the start by Griskonis as the two broke away from the rest of the field.
The positions did not change throughout the race with Griskonis, who was quickest in the heats, holding off Campbell and going on to win in a time of 7:08.67 with the Olympic bronze medalist just under three seconds behind (7:11.37).
London 2012 gold medal winner from New Zealand, Mahe Drysdale, and world champion Ondrej Synek (Czech Republic) were also faster qualifiers than Campbell from the second semi-final.
In the highly competitive lightweight double sculls, Richard Chambers and Englishman Will Fletcher battled Norway's Are Strandli and Kristoffer Brun for first place.
The GB pair had beaten the Norwegians to the silver medal at the European Championships earlier in the season but on this occasion, despite a fast finish, Chambers and Fletcher couldn't overhaul them and the battle for medals on Sunday are likely to be fought out with the current world champions South Africa and the French duo of Jeremie Azou and Stany Delayre who were three seconds quicker than any other crew.
In the three major regattas of the season so far there have been three different combinations used in the GB lightweight four and in the two previous events they finished outside the medals in fourth.
Peter Chambers, along with Chris Bartley, Mark Aldred and Jamie Kirkwood got off to a poor start in windy conditions and trailed in fifth place at the halfway point. They managed to move up to fourth but left themselves too much to do in the final 500m and could not catch Italy, France and Switzerland.
The quartet will now race in the 'B' final on Sunday, but there will be much head scratching before selection for the world championships in August is made with Coleraine's Joel Cassells, who missed out on selection for Lucerne, likely to come back into the reckoning.
In the 'C' final of the women's pair, Ireland's Leonora Kennedy (Enniskillen) and Monika Dukarska were fifth to finish 17th overall.