[Tshark]

I have read a lot of requests for a periscope depth hotkey along with other questions about operating at this depth. In post W.W.II submarine warfare isn't the use of a periscope (or other masts) similar to using active sonar? Doesn't it increase your risk of being discovered more than it helps you find the enemy?

IIRC the Americans enjoyed a sound advantage over the Russians and, as such, attacks were carried out with passive sound almost exclusively. I also thought I read somewhere (vague memory) that doing away with the periscope was considered, but was kept on primarily for photo recon. Can anybody who studies this era enlighten me.

Thanks