Hi Bojan,
did you check your auto target AOB in your last scenario?
It should have been ~ 84° at the first bearing. Strange your operator reports a closing contact.
At the second bearing the AOB must have been 90°.
And at the third bearing it must have been ~ 96° - in reality the contact is moving away now - but SH3 reports a constant distance to target, not a closing contact.
This is a very special situation Bojan.
A contact at the outer rim of the hydrophone circle doing a short trip through the circle (for ~ 12° in 12 minutes?) but beeing reported as closing all the time? Funny things happen.
Btw. - why did you change your interface?