In 1985 Three U boats that Had Been Missing Since WW2 were Found ( Video ) March 16, 2018 Unipro2013main U Boat Wrecks, WW2 Missing Since WW2Near Hamburg, three large U boats are abandoned for their fate. Over the next 40 years, its location remains a mystery for most – even three men are on their way to the devastating, destructive ruin of the Elbe River.