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Originally Posted by William516
2, Does anyone know how to get the (AOB) updated simply by using the attack periscope. I have read several tutorials and have been trying them out slowly and learning to fully target. My main problem is that by the time I get the AOB it has changed and this usually ends up costing a torpedo or simply hitting an area I wish not to hit.
I have gotten the range from the stadimeter (Pain in the butt in harsh weather, but fun to try) and entered it into the TDC
Have found the speed using the 3:15 method, it wont let you use the notepad for speed until the AOB is calculated. I thought I remember reading that there is a way to use the attack scope to constantly update the AOB. Looking for tips on this subject as well, as I have yet to be able to "AIM" for a specific part of the ship as before.
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Do not attempt to get the AOB from the target, by the time you measure the angle and input it manually, it's wrong. Instead, assuming you're on an intercept course with the target's course, measure the AOB for the intercept point of your course and the target course. Go to the periscope/uzo view and set the bearing to zero. X out all info on the notepad. Now, click on AOB in notepad. Input the angle on the AOB page, click checkmark which takes you back to notepad. You should see the AOB that you've input and now (this is important) doubleclick on the checkmark again to actually send this AOB to the TDC. As long as the target remains on course, rotating the periscope/uzo crosshairs onto the target will always result in the correct AOB for the target.
Speed is the most important part of manual targeting. The 3-minute 15-second rule works well but I believe my method works better. Mark contact on nav map and record the time. Now, mark additional contacts and note the time as the target proceeds down the previously determine course. Measure and determine distance travelled; and compute time travelled from first mark to the latest mark. Use this equation: distance in Kmeters x 32.5 divided by minutes = estimated knots. As the time and distance increases from the first mark, as you make additional computations of speed the accuracy will increase due to the reduction of rounding of meters and minutes. This also works very well in determining speed of a zig-zaging target.
Don't be to concerned with distance, there's no need to measure it with the scope. On your nav or attack map make a relative good estimate of distance of torpedo travel from u-boat to intercept point on target's course at time of firing. This will not affect accuracy, only the stop-watch estimate of time of impact. If I'm in close, I'll generally set distance in advance to say 500 - 800 meters.
Hope this is helpful.