The Hunt: An illustrated example of how to sink a ship

[Safe-Keeper]

Why stop with almost 100% realism? Turn off the navmap updates, easy to plot the target track manually if you can do the torpedo computations

You're not the only one to think so.

Lowest realism setting regarding TDC: Fully automated.
Medium: Notepad (in in Silent Hunter 3).*
Highest: Completely manual, as in this thread's example.*

*Option to set WO officer's assistance to Off, Instant, or Delay. On instant, he gets the data instantly, as in Silent Hunter 3. On Delay, it takes him a realistic amount of time.