Now, I dont know anything about modding, but it would be the best thing that could happen to me if there was a mod for SH4 that added pre-ww1 subs like the holland-boats or the c-class or anything that entered service before the S-class. Is there a mod like this? Or is someine interested in making one. Would appreciate it. Heres some eyecandy from pre-ww1 american subs:
http://www.pigboats.com/index.html