i think that you have missed the point ! i play sh3 with no map update (witch means that i haven't sonar lines at my navmap ! )
the point is that: when sonarman says for FIRST time 'long range' that means that the target must be exactly at 20km ( unless ....he is ...beaf !
) ,he also gives us the bearing so we can mark the exact position at the map.
a lot of testing shows me that the sonarman screams long range when he want and not when the target enters the circle with radious 20 km ! thats the broblem (see the hydrophone hunting tutorial by raduz and you will get the picture ....)
privateer: thank you for that information....you think that the sonarman isn't beaf at last?