[Pisces]

Range is important when torpedoes need to turn (much) to close range targets. Due to the torpedo trajectory as it approaches the target from a slightly different angle, due to a parallax effect. The closer the target is, the more the correction. But the target's angular size can help as it gets bigger when closer.

AOB, target speed and torpedo speed is enough to draw a closed triangle (the periscope line of sight closes it). Range only determines how large the triangle becomes. The shape is already fixed. More distant targets take more time to get to the impact point, as do the torpedoes on their part. The other internal angles (and 'target-torpedo closure' speed along the line of sight bearing) can then be figured out geometrically or by the Law of Sines (which the TDC handles) As you shoot the torpedo primarily based on a lead-angle (gyro-periscope bearing), it should hit whenever time runs out. Target speed and AOB is what you need to get right!