[joegrundman]

@Paul Riley

if the fixed line method is complex, then you have other problems

matching course and speed is a perfectly valid, useful and important approach, but calling your currently preferred method the best way is to simply say you don't understand other methods, nor the limitations of the one you favour.

@Sag75 and the others

To be clear about the AOB with the fixed line method - AOB is NOT a factor in this method.

This is because you are measuring the time it takes for the ship to pass it's own length and the ships own length doesn't change whatever the aob. (Only your torps can change that !) the only requirement is that you be able to see the bow and stern.

But because a ship has a width as well as a length, at small AOBs (ie when the target is coming sharply towards you - or away from you for that matter) the width of the target ship can obscure where exactly the bow and stern are - making it difficult to measure when the target has passed it's own length.

@BillCar - you are quite right about the ability to estimate -personally i never use the recog manual (much too much work with the community units mod) and still get very good results using the kind of assumptions you describe here.