SUBSIM Radio Room Forums - View Single Post - Submarine Attack Course Finder (a.k.a. Is-Was / Banjo)

Hitman · 04-15-07, 03:53 AM

Sorry sqk7744 but I think you got it wrong

Though I might be wrong, of course, but see if this example seems more correct:

1.- Our own ship true course is 90, as highlighted in the red circle or our own ship BOW. The target's true course is 300º.

2.- We need to turn the scope left 60º, to our relative 300º, to see the target. The A ring scale is inverted exactly for that. When we turn the upper part of the scope left (Yellow arrow) we can correctly read in the opposite part of the scope ring that we have gone to the "300" mark of the A ring (yellow triangle marker in the handle), i.e. of our relative bearing. We also can see now in the middle ring (B ring of true course) that the relative course to our target would be 210º for us.

3.- Finally the AOB of the target can be read in the other scope ring marker (Highlighted with a green triangle). In this case it is 90º, not 120º as you had indicated. You got the wrong result because you reversed the own ship. This can be seen clearly in this edited picture of your setup:

Hope that helps

EDITED to add:

The tool is in fact, as the name says, a "course finder" so in real life the inputs of the tool would be: 1) Own true course, 2) Target bearing and 3) Target AOB. With that input the tool would give you as output the true course of the enemy.
But in SH4 as in SH3 people tend to do the opposite, i.e. determine first true course of target and use the tool to get the AOB. Probably as someone highlighted in another thread, this is due to the AOB being more difficult to determine in a flat screen as opposed to real (3Dimensional) world, but anyway the real use of this wiz-wheel comes to be very clear when you play at 100% realism, i.e. with no map contact update and view limited to your bridge/scope/TBT.

Also, another problem with this wheel is that in SH4 we are used to see in the upper part of the scope the graded reticle for the target bearing, so we tend intuitively to look for the bearing in the upper part of the scope. But when doing so in this wheel, the AOB would be reversed! This is the main reason why the scale is reversed in the A ring: That you can have in the same marker (Scope ring handle) both target bearing and AOB. If you put one of them in the opposite side, you get a wrong reading, and if you put both in the other extreme, you have a reversed result.

04-15-07, 03:53 AM	#35
Hitman Pacific Aces Dev Team Join Date: Sep 2002 Location: Spain Posts: 6,099 Downloads: 109 Uploads: 2	Sorry sqk7744 but I think you got it wrong Though I might be wrong, of course, but see if this example seems more correct: 1.- Our own ship true course is 90, as highlighted in the red circle or our own ship BOW. The target's true course is 300º. 2.- We need to turn the scope left 60º, to our relative 300º, to see the target. The A ring scale is inverted exactly for that. When we turn the upper part of the scope left (Yellow arrow) we can correctly read in the opposite part of the scope ring that we have gone to the "300" mark of the A ring (yellow triangle marker in the handle), i.e. of our relative bearing. We also can see now in the middle ring (B ring of true course) that the relative course to our target would be 210º for us. 3.- Finally the AOB of the target can be read in the other scope ring marker (Highlighted with a green triangle). In this case it is 90º, not 120º as you had indicated. You got the wrong result because you reversed the own ship. This can be seen clearly in this edited picture of your setup: Hope that helps EDITED to add: The tool is in fact, as the name says, a "course finder" so in real life the inputs of the tool would be: 1) Own true course, 2) Target bearing and 3) Target AOB. With that input the tool would give you as output the true course of the enemy. But in SH4 as in SH3 people tend to do the opposite, i.e. determine first true course of target and use the tool to get the AOB. Probably as someone highlighted in another thread, this is due to the AOB being more difficult to determine in a flat screen as opposed to real (3Dimensional) world, but anyway the real use of this wiz-wheel comes to be very clear when you play at 100% realism, i.e. with no map contact update and view limited to your bridge/scope/TBT. Also, another problem with this wheel is that in SH4 we are used to see in the upper part of the scope the graded reticle for the target bearing, so we tend intuitively to look for the bearing in the upper part of the scope. But when doing so in this wheel, the AOB would be reversed! This is the main reason why the scale is reversed in the A ring: That you can have in the same marker (Scope ring handle) both target bearing and AOB. If you put one of them in the opposite side, you get a wrong reading, and if you put both in the other extreme, you have a reversed result. __________________ One day I will return to sea ... Last edited by Hitman; 04-15-07 at 05:27 AM.