Pigboat Mods?

[Jukeb0cks]

Hi all. First post here so forgive me if this isn't formatted correctly but this seems like the most viable place to ask:

Are there any single or megamods that expand upon the S-Class submarines in-game?
Most notably referring to the differing conning tower shapes and build groups between both variants of the Holland and Navy types, or even specific to the Holland types which all seem to differ slightly per-boat, specifically S-18 with a conning tower that appears to have a thin middle section and protruding 'chin'





If there's anything that does attempt to shed light on this please do let me know!

Thanks in advance,
Juke