Donitz was BDU or Leader of Submarines and then promoted to FdU or Fuhrur of U-boats or Commander of submarines. Hiltler thought the U-boats were just swell unfortunate he did not give the materials to build the 300+ Donitz wanted to have operational. Basically Donitz wanted 27 new boat built monthly....ain't and didn't happen.
Donitz figured he need to sink over 3 million tons a month to stay ahead of what the US was building in the shipping industry. It did not quite pan out. The boats were outclassed with advent of Huff-Duff and radar anyway. Donitz realized he need faster speeds will submerged. They had the technology but did not employ until to late.
What is up with the Navy Dude picture under my name? Is he from the Village People or something?