GWX had a VII-A for SH4 but there's a problem built into SH4.
SH4 does not 'launch' torps like SH3 does. They fell through the sub if the tube was above the water line.
In SH3 they'll launch as they should as proven with the Schnell Boot Mod.
I may need to re-install SH5 just to get all the parts needed for a nice player version. Extracting what I want is not a problem.