First you have to go down the hatch ladder...
The torpedo launchers...
Tons of pressure values all around...
One control area...
It can get pretty dark inside...
The officer's washroom...
I have a lot of respect for men who worked on these submarines. I can't imagine closing the thing up, diving deep and staying there for months! The bunks are so small they only have 7" clearance for their heads! Plus they didn't have their own bunk, they shared it with 3 other sailors, sleeping in shifts.
Of course I used my widest lens, the 10-17 FE which to me only seemed fitting.