Hi PaddeMcNasty Welcome to Subsim when you start your Career in LSH-2022 you pick Erprobungsselle (Testing station in English) as your Flotilla then you pick your Uboat class Type II A/D
or Type VII B/C IXB IXC and Uboat number then you can transfer to the flotilla of your choice when they become operational or when you get back to port after your first patrol in 1942.