TMA in SH4 is amazingly retarded to do, at least when I have tried anyway. The problem I have is that isn't dot stack and TMA ruler to work with in the same way as you do with DW. Then there is the fact that plotting relative motion on SH4's map is a pain in the...
There is an alternative however. If you search the forums, you'll find a nifty thing called MOBO. Get your sonar guy to track your target, as he calls the bearings, mark your subs position on the map (as instantly as possible is best).
Between marks, make a note of the mark number and the bearing called out and time called. I tend to be a bit sneaky and have my finger on the pause button so that I have all the time I need to mark the sub accurately + I have the time accurate to within seconds. After a few TMA legs, you can screenshot and pass the image to MOBO where there is a TMA tool. Don't forget to set the correct pixel to range scale (as I have done before).
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