Hello iambecomelife!
First of all, I have been following your amazing project for years now, and let me tell you how extremely impressed with your work I am. This project started 15(!) years ago, and astonishingly, it is still on its path towards success. I have never ever in my life met anyone with this amount of discipline. It impressed me even more, since I myself struggle to work on the same project even for a month.
Okay, I just wanted to let you know this above, but it wasn't the reason for me finally joining this thread actively.
I found an interesting photograph on Instagram, in the description it says, it is the engine compartment of a WW1 german U-boat. Of course this thread was the first thing that came to my mind, because I saw that you struggle to find useful photographs of the WW1 U-Boat interiors. I'm going to link it here, I hope you didn't find it already.
Wish best luck for this amazing project!
Link:
https://www.instagram.com/p/C376MvzN...l1dHp5OGx6dw==