The GB women's eight had looked in good form as they finished runners-up to the defending champions from the United States in Sunday's heats.
And Charlotte Hodgkins-Byrne, Alice Bowyer, Emily Ford, Chloe Brew, Holly Hill, Madeline Badcott, Anna Thornton, Heidi Long and cox Sasha Adwani impressed again as they won their heat in fine style to wrap up a good morning for the GB U23s.
Germany were first to show but the British eight were moving well and had taken the lead by 400m. New Zealand and Australia were involved in a tussle for second place but were unable to pull back GB, who matched the speed of the pursuing boats to come home with half-a-length advantage.
The women's four of Lauren Kedar, Saska Budgett, Harriet Taylor and Rowan McKellar had earlier been involved in an exciting three-way battle with Canada and Belarus for one of the two final places available in their repechage.
Canada raced into an early lead but the British four quickly settled into a good rhythm and had pulled ahead at the 500m mark.
They continued to pound away at the front but a big kick at the halfway stage from Belarus - silver-medallists at the Poznan World Cup this season - saw them move level with Canada.
Both chasing crews upped their stroke rate in the last 250m but GB responded well to the pressure and held on for a narrow win, with just half-a-second separating the top three. Belarus took the second final place.
It was a less nail-biting win for the GB men's coxed four of Rory Gibbs, Matthew Aldridge, Michael Glover, Christopher Heywood and cox Harry Brightmore as they controlled their repechage to reach Thursday's final.
They took the lead after 225m and had moved half-a-length clear of France at the halfway mark, an advantage they maintained with a confident performance.
The men's quadruple scull of Harry Leask, Rowan Law, Harry Glenister and Andy Joel narrowly missed out on a semi-final place in Sunday's heats but comfortably progressed second time round with victory in their repechage.
They were evenly matched with Russia during the first half of the race but upped their stroke rate in the third 500m to move a length clear. With first place secured, they were able to ease off in the closing stages with one eye on Tuesday afternoon's semi-finals.
There was disappointment for the women's quad of Flo Pickles, Kyra Edwards, Georgia Francis and Lucy Burgess as they left themselves with too much to do in their repechage.
Needing a top-two finish to qualify for the A final, they found themselves adrift of France and Australia at the halfway mark but kept fighting and dragged themselves back into contention with a big push in the third 500m.
They continued to close on Australia but couldn't quite overhaul them, meaning the British quad will race in the B final on Thursday.
The rookie men's pair of Oliver Hines and Graham Ord will also contest the B final after finishing fourth in their repechage.
Italy and South Africa pulled away from the field to claim the two qualifying places but the British pair produced a battling performance and moved past Greece into third just after the halfway mark.
They weren't quite able to hold on for a top-three finish, though, as Germany - the quickest of the five boats in yesterday's heats - produced a strong finish to pip GB in the closing stages.