Leitender, I agree completely with your second point

I play mostly 4x, 8x or 16x TC

I do some laundry, ironing, cleaning, wash dishes, eat breakfast and read in the meantime
I'd like to ask for stadimeter. I believe I've read somewhere in this forum that historically German u-boats weren't equipped with stadimeter. Is it right? I ask because several players mention using it and IIRC even SH5 megamod Wolves of Steel has it by default.