So here are two shots of the test I made loading very initial stage of this scenario. I did not change my course nor speed.
Detection of S03 went without special problems speed was initially determined from DEMON as 3kts but then corrected to 4kts.
This is all it went well.
The first shot is the presumed TMA solution based on several S03 bearings
Above TMA stack looks pretty decent but apparently range and heading of the target is totally wrong.
This is the position of the TMA arrow according to TRUTH. I am afraid
it does not look like something one would be able to deduce from TMA.
And this was my original point of this topic.