Re: 50 feet
Draft: 35.5 ft (10.8 m) maximum (on the SURFACE)
source:
https://en.wikipedia.org/wiki/Ohio-class_submarine
Not sure what that post means (sounds like someone who doesn’t know Submarines talking about modern Submarines)
Would have worked on WWII Subs, not now
Correct. Modern ballistic missile subs can launch at much lower depths.
In Clancy’s novel would 50 feet be relevant to sub depth when firing torpedos? Meaning at that time? Still carrying on with the (Hunt for) Red October stuff?