I'm not sure with anything what I say here .. but I'l do it anyway. IRL wakehomers detects home with special HF active sonar. It detects small bubbles in very short distances. Torpedo tries to stay on the border of the wake. There have to be bubbles. Subs are made to make no bubbles at all, or much less of it, until they cavitate, of course. So wakehoming should not work, or not very well, until sub cavitates (or surfaces).
But .. wakehomers don't rely ONLY on wake homing. They have passive sensors too. They only switch to wakehoming when they detect the wake. It is not good idea to fire wake homer from head-on course, but in most cases it will hit without entering the wake..I did used wakemohers many times in DW against subs. On kilo you often have no other torpedoes left. Wakehomer at least 'scares' AI sub.
But I think I even did kill something with it. I don't know if the 'wake homing stage' was entered, but the passive homing should be enough.
It would be great to have ability to program 'after enable course' for wake homers. I thing something must be used IRL.
With that, you would be able to fire torpedo from head-on, aim it into the wake, preprogram 180% turn before enabling, so the torpedo will falow wake in the correct direction.
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