I was on the SHIII mods page and came across the U-BOOT HAHD mod by Schwieger. There he has a beautifully done Type II boat modeled with great attention to detail. Not sure if asking to use his model would be appropriate for this project. Just a suggestion, it really is well done, here is the link to the thread
http://www.subsim.com/radioroom/show...79694&page=215
Check out the videos and see what else they have done to SHIII in the HAHD mod, made me want to install SHIII again just to see it.