Corsair15, I just noticed you're new to the forums!!
Welcome to the communnity!!
And thanks for the kind words.
Here's a
link to a website that has a WWII "Torpedo Fire Control Manual" that could be useful in your study. You say you don't have access to the Internet at home so don't get caught trying to down load this manual at work!!
It explains the procedures of making an attack using the various tools available to a sub "Fire Control" team. This is where the formula I stated earlier can be found (although some of the actual figures don't add up when you do the math, Who proof read these manuals anyway!?!) But, a lot of good information can still be gleaned from it.
Best regards