Again, not really. 200 u-boats on patrol was the "ideal" figure and considering that the Germans had 159 at one point and ~100 for about two years AND that the Kriegsmarine didn't receive as much attention as the Luftwaffe or the Heer, I think that the number was feasible. Not by 1939, of course, but by 1942-43.
but the plan was to have them at the beginning of the war not close to the end. germany had very shortly 159 boots when you count all boots and that after they invested heavily into building more boots. that still only half of what dönitz considered to be ideal.
more was not really possible without letting the army and airforce pay for it.
comsubpac,
If you have noticed, Thebromgrev and a few others here have run experiments to determine the feasibility of naval build plans in-game. As a result of these inquiries, we have already determined that the lack of shipyard limitations means that even the most ridiculous and insane pre-war build plans are feasible in game for major powers. (Go look at my experiment with Stalin's build plan... sheesh.)
I was not trying to brag or argue that Donnitz's plan was historically feasible. I was simply forestalling the obvious question from my colleagues here as to whether the build plan was feasible prior to 1941. And I was half-joking. Anyone who's built a ton of subs already knows that getting to at least 50% practicals in subs is super easy, making them dirt cheap.
"Donnitz, we lost 100 sub flotillas during Sea Lion. What are we going to do?
"No problem! Speer already told me that he has another 100 flotillas slated for construction during the next year. We'll be fine. So quit your whining and get back to training the new submarine crews. And tell Jurgen Prochow to quit trying to win an Academy Award every time I order him to Gibraltar!"
you can easily build 50 battleships as germany. if you search for "feasibility of naval build plans in-game" nearly everything is feasible. when you speak about plan Z and you compare it to other countries which have actually build the fleets mentioned here you have to keep in mind that the plan is completely unrealistic and impossible.