These Folder contains historic submarine of the past maybe worth to
build as 1/1 replica to check out there performance. 

232-009 Turtle       US 1776 (One seater )
Z48-023 Brandtaucher D  1850 (three seater)
226-137 Huntley      US 1863 (eight seater )
ArgoJr.Hulk2         US 1898?(two-three ?)
239-021 Neger        D  1944 (Human Torpedo)
136-037 Biber        D  1944 (single seater)
216-042 Seehund      D  1945 (two seater  )
120-060 X-craft      GB 1943 (four seater )

Others maybe good for this purpose : (without picture here)

Fultons Nautilus F 1798, 
Hollands No.1-3  US about 1878, 
Drzewiecki       SU 1879, 
Garrets Resurgam GB 1879, 
Argonaut II      US 1897, 
Forelle           D 1902, 
Welman Craft     GB 1944, 

regards Carsten