@Stiebler: I agree with Mikhayl... you've written a good summary there. Many thanks!
@Tomi: I tried to send you a second PM this morning with some more details regarding CFG and TGA files, but your PM inbox was full.
I started merging some of my config files with Tomi's variant of the 3D model and had my game running. Although I still encountered the torpedo problem. I'll also work through the detailed instructions from Stiebler and see if I can resolve the problem.
I've included a screenshot for everyone to enjoy... (nothing new, but still).
I also started testing subsystems and most were working okay (periscopes, sonar, hydrophones, radio). There was one problem with the radar, but I think this can be fixed using a modification to the entry dates in the Basic.cfg (one of things I tried to PM you about, Tomi). There was also a problem with the placement of the BOLD decoy launcher. The launcher itself is located way behind the boat (the ultimate place for a decoy launcher, but not very realistic!):
(No, that's not a decoy, it is the actual launcher.)
I'll do some more tests this evening and keep working on the menu graphics. More later... keep up the good work, everyone!