I was playing this game called Clad in Iron; Sakhalin 1904. It has three different "classes" of torpedo hull design, and they are:
2nd class
Third class
I'm unsure of this game's historical accuracy as I'm having trouble locating any of these ships on the internet. The closest thing I found that looked like these were on This old website on american torpedo boats . I hope these are historically accurate so that you guys might be able to introduce them. They're rinky dink but I think they'd supply some nice early game cute flavor.