First of all many thanks for this most interesting and educational thread. I really appreciate it.
Quote:
Originally Posted by AdamMil
The OAC seems to require knowing the target's course, so I imagine it's one of those things you'd use after you get close enough to see which way the target's headed.
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Actually you could work out a very good estimation of target course/speed/range while conducting a passive sonar only approach.
Maybe I'm not telling you anything newer, but worth mentioning.
Once you have found and set your boat on the NAC, you have at least two methods that I'm aware of.
1) First ther is the "four bearing method". It involves sampling the bearing to tgt in temporal steps and plotting. TMA done by hand, requires times and patience, but gives out good results. I rarely use this.
2) Then there is the "Using the [Is-Was disk] [Mk13 submarine attack course finder] to conduct a passive sonar only approach" method. This requires time and practice, and the use of the Is-Was disk (you can make one yourself or use a mod that give you that in-game).
This method is the one I almost always use when first detecting long range hydrophone contacts. I do not use the "whole" methods, just the first three-four steps to obtain 3 estimated possible courses and speeds of tgt.
In this way I can plot them and so get a visual aid that help me much in analyzing the different tatical options at hand and finally choose an approach course that suit me the most.
I find it reasonable fast to use and "less annoying" than the four bearings method.
You can find detailed documents about this methods (and others) inside the [hsGUI v3.1] mod for SHIII.
I think that if you already had work out out and egaged the NAC to your tgt, then you could easly make a gross estimation of the OAC simply using the second method cited above while your are waiting to close range.