mutiple targets - sonar ??

[I'm goin' down]

My imagination is running wild and I cannot sleep. Here is why...

One target on sonar - attack using sonar only is feasible.
Two target on sonar - attack using sonar is feasbile if the targets have different hydrophone contacts. say one where the first contact is 270 degrees and the other at 300 degrees..
Mutiple targets - What do you do when you have multiple targets and they are so close together that the hydrophone contacts are so close together that you cannot tell one from the other?

For now, I will stick to solo targets...until I am educated.

Now, back to the game. I am below the layer, hiding from a destroyer....