Sure I had a good SH4 related link that taught me, but seem to have lost it. Pants.
Anyway, just as a rough starter:
AOB - use the protractor. Draw a line in the TAI/Navmap from the bow of the target to the centre of the target, then draw another line to the bow of your sub. Degrees shown on protractor = AOB, though remember that this changes by a degree every few seconds depending on target speed, so you must be quick to input and recheck regularly.
Speed: Make one 'x' mark at the bow of the target and start your stopwatch. After 3mins 15 seconds exactly, make another mark at the new bow position. Use the ruler tool to draw a line between them - that will tell you the distance travelled between the two marks. Distance travelled divided by 100 = speed. In SH4 the time between marks was 3 minutes, but I'm 99% certain it's 3.15 for SH5, and I'm sure one of the chaps will have a link to back that up (or disprove it, if I'm wrong lol).
Range: Stadimeter is used by aligning the
bottom of the target's mirror image to the
top of the target.
So activate the Stadi, and move the mirror image so the wake of the mirror image is aligned with the highest exhaust stack in the true image. This should give you a fairly accurate range. Don't forget to check & recheck as well to refine your solution before firing.
Hope this helps.. though I really would recommend TDWs New UIs with TDC - you'll have a much easier time as the stock manual inputs have daft limitations like only being able to manually input speed in increments of 2 knots.. not much use if your target is doing 11 knots
