How dangerous is to use active sonar?

[twm47099]

Just a question about the accuracy of active sonar in the game --
I'm using SH4 v1.5 with OTC. I find radar very accurate (tested by setting the gun range to the determined bearing and range and hitting on the first try at both long and short range.)

I find the stadimeter (Sp?) to be twitchy - sometimes slightly long, sometimes slightly short, some times accurate (as determined by the white "x" overlaying the ship in the attack map.)

But I find active sonar pings to be all over the map (except at the actual target range.) A target at 3000 yards will show a ping range of 8000 yds. A target at 2000 yards will have a ping range of 1200 yards (not consistent so I can't just say the scale is consistently off.) Bearing is very accurate, and I have run 2 leg TMA using only passive sonar and gotten accurate bearing, range, and speed. But I find pinging to only be useful for atmosphere.

Do other users find active sonar reasonably accurate? Any ideas why my active sonar is so bad?

thanks

Tom