U-3523 has been found

[Jimbuna]

The German U-boat U-3523, which was sunk by depth bombs in Skagerrak by a British B24 Liberator aircraft on 6 May, 1945. The day before, the German forces in Denmark, Northwest Germany and the Netherlands had surrendered, and the U-boat was not on a war patrol, but probably on the run.

That is quite a find but sadly, the surrender notice had been served a day earlier and they were probably unaware unless they were enroute to a scuttling or surrender point.