Second reply from my dad. If you have a question, ask a veteran. [:)]
He was a sonarman in DDs BTW.
"Second possibility. There is no storage shown for the "hoods" for the radar repeater for night and day use. Could be two - - - one for daylight shielding and one for rig-for-red night use.
I looked at the pictures of the SONAR room. This reel was supposedly shot in 1944. The "Tactical Range Recorder" (TRR) shown in two different shots was classified SECRET at that time and should have been covered. It was used to space the depth charge patterns when attacking a submarine. Only an Officer was allowed to man this equipment. I can't identify the sonar stacks (possibly QBE or QBF). The scope shown was like a radar "A" scope and showed range to the target (measured time elapsed from transmission of active pulse to reception of echo)."
He's referring to the over 800 photos of the interior of a Sumner-class DD here:
http://www.navsource.org/archives/05/interior.htm
I don't know of a more complete collection of photos of the spaces in one class of ship, including habitability, engineering, weapons, and sensors/comms. This collection really shows what a modern warship of the time looked like to the crew. If you want to know how they loaded 20mm magazines, it's in there. Plus everything else.