Response last updated by gtho4 on Nov 30 2020.
Nov 30 2020, 2:45 AM
elburcher
Answer has 4 votes
Currently Best Answer
elburcher 25 year member
1578 replies
Answer has 4 votes.
Currently voted the best answer.
To add to the above answer, the attack periscope also had a horizontal and a vertical reticules for determining the speed and range (distance to) of the intended target for creating the torpedo firing solution.