https://youtu.be/xzwvtg2kbz0
Humans at Sea has a short video with interviews of Navy personnel who spend a good deal of each year living in the close quarters of a submarine.
The Navy’s submarine force is unlike any other community in the military, a small, tight-knit group of approximately 20,000 active-duty and reserve Sailors who spend months at a time sailing deep below the waves. Between their secretive missions and their lack of contact with the outside world, the submarine community is often a mystery to those on the outside.