The DW Mod Scene - Ok, WTF?

[Pillar]

Unless this range/course/speed detection was built into the original, I don't really see why it needed to be added

Some sonars have "800-2000" Hz bandwidth. Therefore - the classification is complicated.
While the target is not determined as "Hostile" - she will not be attacked.

i.e., the AI in these cases lacks the means to engage *any* sub because it cannot classify the target. Hence the workaround.

I don't understand how it works exactly, but that's the explanation I think.