Remember the TMA plot size is 25kyds
so what do you expect with longer LOB in TMA ?
to gain 2 miles to make TMA on the edge of the plotting table ??
I personally use OHP TA only to ID the target.
If it's a surface target, you don't need the TMA as you rely on radar for target position
If it's a sub you better use active sonar once identified
so, I don't get your point ...
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