Very good answers, but i am still looking for answers, who operates a ComanderPeri and who does all the calcs? How do the targeting worked in real life, in WW2 on German Subs? And especcially, do any of crew\officers track the target on charts beneath and underneath the water? and how? What assistance Acoustic and Radioman does to track the target? I mean how that CHAIN works? From when target been spotted to torpedo attack and escape. Thats what interests me most!!!!
P.S. You make things clear about 1 WO and TDC. Last - About tracking traget: Who makes that? And how it works?