target speed: the eighty-ten method

[Armistead]

Originally Posted by sergei

And that's the thing that has me scratching my head.

How can one assume an AOB of 10 on a target we neither plot nor eyeball?

What if when we first make contact with the target the AOB happens to be say 45?
Do we run ahead at speed until we get a 10 AOB, then start the approach?


It looks to me like this attack method will only work in a very limited set of circumstances.

That's still what doesn't make sense to me. Watched the youtubes and basically it's set up.

Say I'm going north and I get a sonar contact at bearing 170. Say it's a group of merchants, but running in a row at 12kts. I can't see it, so do you hit the gas until you have it in the correct position coming towards you. If contacts are off and if this works it would only be a tool for contacts off, you would have to track it by other methods until it's on a perfect path, but by then I would already have my setup.

It just doesn't make sense unless it's one ship and all factors are perfect.


The bigger problem is I'm not going through all this when they're much easier ways for a single ship. I still see no way it could work with a large convoy or TF with ships in a zig pattern with escorts constantly making zigs. Your sonarman will tune into different ships, giving different commands.

The real tool is radar, not the blind use of sonar. This appears to be using your elbow to scratch your arsehole.

[Diopos]

Originally Posted by Armistead

...
The real tool is radar, not the blind use of sonar. This appears to be using your elbow to scratch your arsehole.

Well not exactly, developing tools and methods that allow you to estimate the target's vector via PASSIVE sensors is always a plus (even more so for a sub).


.

[Nisgeis]

Originally Posted by Diopos

Well not exactly, developing tools and methods that allow you to estimate the target's vector via PASSIVE sensors is always a plus (even more so for a sub).

That would be useful, but this method is apparently only for determining the magnitude of the vector (target speed), for which you already need to know the vector direction (target's course (AoB)) and be in a very specific position ahead of the target, just off the target's track. I'm still unclear how the OP is saying that we will be in that position, in order for this to work.