Okay, I haven't tested this yet but, if it works, it will be an improvement. Normally, when you want to adjust a target's heading, you use the AOB dial, eyeballing how far to crank it. Then, when (and
only when) you send the new AOB to the TDC, it changes the target's direction ... but it also changes the target's compass rose, relative to your boat's (fleet submarine) heading. Ergo, the target's heading readout on the TDC still won't be correct.
Which, of course, means you gotta make numerous adjustments to get it exactly right. And the effort is complicated even more if your sub is moving.
This mod, I think, lets you adjust AOB and,
as you make the adjustment, you can watch the TDC target dial move ... at the same time! Consequently, there's no hit and miss ... what you see is what you will get after sending the date to the TDC.
Btw, after you click on the little stopwatch, estimated heading is displayed in the chat box ... in the same sentence as the target's estimated speed.
Edit:
Okay, I checked to see if this works ... I also checked to make sure I made the changes properly. For some reason, it doesn't work for me. With PK off, I crank the AOB dial on the left ... but the TDC target dial doesn't move. Leastwise, not until I send the data.
Karama, if you've checked this and it works for you, please let me know. Maybe I'm still doing something wrong.