Looks like you got placed with a VIIB (the VIIA is not modeled in game)
My guess is you were looking for a Type II.
If you haven't already, look into SHIII Commander, it allows you to pick your starting date, home port, and U-boat type and number.
Since I suppose you are using GWX the U-boats and start dates listed in the manual serve no good purpose
Hope I helped!
P.S. usually you can grab a type II in 1939 in the first or 7th flotillas, even though you hate the Kiel kanal, SHIII Commander has a menu where you can mess with the time compression for your event. like "near land" can be moved up from like 4x to 1024x.