I sure hope all that stuff in the control room there doesn't actually do anything. Otherwise he's made it unnecessarily complicated and doomed to fail.
I wonder if the U1 in the Deutsches Museum in Munich will float or is it full of cement?
Grady, here´s some more information on U1 which perhaps answers your question:
Deutsches Museum: U-boat U1
Best,
Marcus
If this isn't too far off the thread, how many submariners are there among us on the 40 site?