Like I said, it all depends.
Depends on what you chose to do as well. I came in trying to be a CS just because I was already working at a bar as a cook. Got pretty high test scores and they moved me to RadioMan (aka IT/Comms). But I chose that because I didn’t know wtf the other shyt they offered was at the time and I had already went to school for computers and got certified.
My first duty station wasn’t at sea either, because I got top of all the schooling shyt. But when I got on one it wasn’t all that bad to me but I wasn’t ships company. My schedule was basically Eves/Mids or whatever so ship was pretty much dead when I would get off.
Berthing was pretty much dead when I was awake. I don’t remember the coffin racks being crazy either. That top rack sucked idc if you could sit up or not. It was cold af up there and loud af. Was definitely not doing the floor shyt so I grabbed a middle rack and was chilling. I had my laptop with thousands of movies on external so I would just do that shyt until it was time to do something.
My new berthing was chill too since engineers were basically never there except to sleep. So it all depends on random shyt imo.
And only subs do that hot-racking stuff you described and 90% of the navy is like hell nah.. subs are some different shyt even to most of us.
And yeah, it’s like jail a lil bit, especially on an all male ship (but it’s less bullshyt without women around). Workout, sleep, work, repeat. I worked with the spooks so I was mainly only around them.