Sorry Kapitain.
Not even close. It references the service manuals used for the older type WWII fleet type submarines. They can be found on
www.history-on-cdrom.com. I like to use them both when playing the sub games but also when reading WWII sub novels to follow along with the accuracy of the novel. In Cammeron Cooke's novel "Pride Runs Deep" there was a section where the stern planes where jammed in a steep dive quickly sending the ship down past hull crush depth.

But a quick thinking ensign in the stern torpedo room realized what was happening and ordered his crew to man the manual stern plane controls. It was very cool to reference the technical manual for the sub and see what had to actually take place to make this happen.