Periscope underwater & hiding in GWX

[Lexis]

Hi everyone, I have a few questions. I would like to know if periscopes on board real life U-boats could be raised underwater and if so, was there a maximum depth at which they could operate? And what could be seen through them underwater / which SH3C setting should I set for the water opacity?

Another question concerns hiding underneath ships and ships that have reached the sea floor. Does the sound they produce (partially)hide my U-boat from the enemy sensors in GWX?

[bigboywooly]

Hi and welcome aboard
Yes you can use your periscope underwater
Not sure if they did in RL

Set the water to 18-20 in SH3commander

And no the enemy merchants wont hide you
Tis one of the annoying things in SH3
The AI warships see through land and buildings also
:damn: