After a long time passed i decided to put my fingers again in modding Silent Hunter.
This mod changes the 3D Image and the Inboat Image of the Torpedos to a shiny metalic look.
You will also get 10 different Torpedos. The Inboat Torpedo will be the same look as the 3D Torpedo in the water.

I took this sheet as reference:
Unzip the zip and enable the MOD with JSGME.
Link->
https://www.subsim.com/radioroom/downloads.php?do=file&id=6080&act=down
Enjoy. Jimimadrid