OK, SH4 offers to select a specific type of submarine at the beginning of every Mission and Career, a huge change to SH3, where you were simply given your flotillas boat.
Now I never have been to the pacific in a submarine and except for some class names, I have absolutely no idea about american WW2 subs.
The ingame Museum shows them all but not their data (i. e. speed, max depth, max range).
Anyone knows a website where I can take a look at these so I have an Idea what to select when beginning a mission.
EDIT: someone should make the Devs implementing a sub-select-screen where all the specs are shown.