For what it is worth, here are many sounds recorded of equipment operating in the
Pampanito, including a recording of a periscope being raised, then immediately lowered. The recording is not very loud, but it seems to take about 17 seconds going up, 10 seconds coming down.....
The Site:
http://hnsa.org/sound/#pampanito
The recording:
http://hnsa.org/sound/pampanito/periscope.mp3
Lots of very interesting sound recordings, equipment, engines, etc...lots of sonar sounds, etc, I assume the Sound MODders have long ago found this resource.