Which liners were Germany forced to hand over to Britain and America as return for ships sunk during WW2.
What were the liners renamed as?

The ships were the Imperator, the Bismarck and the Vaterland.
The Imperator went to Cunard and was renamed the Berengaria, the Bismarck went to White Star and became the Majestic and the Vaterland went to the United States line becoming the Leviathan.