Looks nice. though the small submarines are really tricky ones. Without specs is hard to say much...
Thanks. Yeah specs... I really suck in these, but let's try.
I enlarged it a bit:
Speed : 12+kt
Test depth: 150m
Range : 1000 nmi
Complement: 8-10 + 6 divers
I guess it's needless to say that's intend to operate in Baltic /Finnish Gulf. Propulsion could be "all electric" with fuel cells or small AIP generator; perhaps ? Also, I'm not sure if the external tube is a good solution concerning drag or noise but I was thinking modularity and quick reload.