Does depth ping give away my position?

[Marcello]

Originally Posted by Bl00dCat

I'm playing SH3+GWX campaign, and, due to stock depth map which definitely was made by some Allies or Soviet agent, I have to ping my exact depth under keel very often.

It is not like world oceans had been thoroughly surveyed with the help of GPS in 1939.

But afaik, the german u-boats barely used their horizontal sonar (S-Gerät) because optical information was more precise at that time,

As far as I have read the Kriegsmarine regarded active radar and sonar emission as something to avoid as much as possible. Sometimes they went to extreme lenghts to avoid turning on their active sets. Besides I am not sure how many active sonar sets were actually issued.