pretty cool U-boat diorama

That is a whole lot of work for sure. My Dad served on a sub in WW2. I have been inside a decommissioned one like he was on. I don't know how they did it. I went down in a small sub in Grand Cayman it had windows and did not go that deep. "F" that! Those men were something else. Hats off to them. They truly where The Greatest Generation.