German TDC

[derstosstrupp]

The easiest way to do it in SH games is to calculate the AOB that corresponds to a particular bearing, place your optics there, set the AOB into the computer and then press that TDC button you have circled. Then at that point as long as the target does not maneuver, you don’t need to update AOB again. Remember though that you can’t change course either because the TDC will not take that into account in the game.

For example:
I parallel the target at maximum range and I determine its course as 000. I overhaul it until I am a decent distance ahead and I dive. I approach on course 270. Once the range is about 1000 to 1500 m I start setting up the computer for the attack. I push the “button” to allow me to input data. Since I am on a perpendicular course, I place my scope on bearing zero, set the AOB right 90, and then press the TDC’s “button” again. Now when I slew back onto the target, the AOB will be correct in the computer.

If you are not on perpendicular course, you can use the attack disc or whatever course finder you prefer, or simply math to figure out the AOB based on the bearing.

Formula is:
AOB = Own course + relative bearing - 180 - Target course
If answer is less than -180, add 360
If answer is greater than 180, subtract 360
If answer is negative, target’s bow is left