manual TDC problem

[Joe S]

I ran into a problem with the manual TDC recently, I set up an attack from about 1200 meters, manually set the range, tracked the target for quite a while, got several speed estimates by dividing distance travelled by time elapsed, did that about 3 times and all estimates were within one knot = or (-). speed was set manually. The angle on the torpedo track and target track was 90 Deg or very close. However, I missed with three torpedoes. I have no way of knowing if I shot too far ahead or behind Question: Can the external camera track a torpedo as in SHII?

I had another chance a while later, after reloading the tubes. Same basic setup as before, but this time right before firing I switch to the TDC map, and noticed that the green line indicating the torpedo track was WAY behind the target even though the scope was locked on the target. I manually reset it to shoot ahead of the target and got a hit. I have noticed on other occasions that the TDC tends to aim behind the target. What am I doing wrong? Thanks! Joe S