Wolves of Steel detection help
 

I'm having trouble with being easily spotted in this mod. I have played SH4 for years, so I know the ins and outs of remaining hidden. My problem with this game is that if I leave the periscope up for too long, (one minute for example), while looking at ships that are miles away, they easily find me and open fire on my position. Is this supposed to happen? I feel like I can't acquire a solution fast enough on the TDC before the AI finds me and starts opening fire.

This is not really the case in TWoS in general...
Maybe just in case of Polish destroyers in opening Danzing mission because your position could be "relayed" from nearby Polish submarines which also operates in the area. Maybe they just spotted you before you dived or maybe they can pinpoint your approximate location with their hydrophones? There are many possibilities... :salute:

Believe me, that's more realistic than anything in game. Nothing's wrong with that, happened to me a bunch of times before I realized my sneakiness wasn't enough against cruisers. Just don't panic when you are engaged, dive as fast as you can and avoid your enemy. They stop looking for you after 10 minutes usually.
No captain is perfect. :Kaleun_Salute: