Those things are HUGE! I got a chance to see them up close touring a Los Angeles class boat while I was teaching a course in Groton. The 48's make the torpedoes carried on destroyers look like toys.
I couldn't believe how much space the bubbleheads had aboard that boat. Coming from an Adams class DDG, the sub looked immense by comparison.
Which Adams class boat were you on ? Me: DDG-7 - Henry B Wilson 79-84, B Division - 1 Fireroom