new sub progression

[buddha95]

When I played last, I was in an s-boat, then was awarded a gato. Is there a mod or way to set it myself so i progress though the stages of newer subs??

1) s-boats
2) porpose class
3) salmon or sargo class
4) gar class
5) gato class

this makes much more sence and would enrich my gaming experence. I would appriciate all the advances as they occured. From torpedo tubes 4/0 to 4/2 to 4/4 to 6/4, etc.

How bout some help from the guys who know all the ins and outs, ok??