SH3 Newbie Guide, FAQs, Tactics & Tips, Links, & other helpful stuff

Pisces · 02-03-08, 12:36 PM

Barbac:

Since you mentioned the GWX 2 manual, take a good look at figure D-1 on page D1 of Appendix D of the manual. (But ignore the yellow/green/ blue torpedo/gyro angle stuff, consider only the line extending from your uboot's bow) You have only provided the orientation of the uboot (in your both cases due north) and the relative angle the target can be found at (case 1: 334; case 2: 46). The triangle is 'open' until target course or either AOB is given. Do yourself a favour and draw your situations on paper. Draw uboot-point. Draw uboot-course. Draw relative bearing from uboot to target. (at a range if you will, but not important to understand your problem) And here is where you must end because of lack of data. The triangle is not finnished.

With regard to the (284 - 90 - 180) you mention: that 90 degrees is the target course that was determined from 2 position-plots drawn on the map (appendix D page D-11; 1 page before that formula page); the -180 is to reduce the AOB_initial (=284-90) to within -180,180 degrees (port,starboard).

Maybe you are confussed as to who's bow AOB is about, uboot or target: people allways mean the target's AOB although they do not mention it. If an angle on the uboot's bow is meant it is called (relative) bearing.

I hope you are not feeling intimidated by all this. I know this can be confussing as hell for some. But if you persist you'll get the hang of it sooner or later. And like I said, pen and paper are your friend! (or nav-map tools

)

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02-03-08, 12:36 PM	#11
Pisces Silent Hunter Join Date: Dec 2004 Location: AN9771 Posts: 4,904 Downloads: 304 Uploads: 0	Barbac: Since you mentioned the GWX 2 manual, take a good look at figure D-1 on page D1 of Appendix D of the manual. (But ignore the yellow/green/ blue torpedo/gyro angle stuff, consider only the line extending from your uboot's bow) You have only provided the orientation of the uboot (in your both cases due north) and the relative angle the target can be found at (case 1: 334; case 2: 46). The triangle is 'open' until target course or either AOB is given. Do yourself a favour and draw your situations on paper. Draw uboot-point. Draw uboot-course. Draw relative bearing from uboot to target. (at a range if you will, but not important to understand your problem) And here is where you must end because of lack of data. The triangle is not finnished. With regard to the (284 - 90 - 180) you mention: that 90 degrees is the target course that was determined from 2 position-plots drawn on the map (appendix D page D-11; 1 page before that formula page); the -180 is to reduce the AOB_initial (=284-90) to within -180,180 degrees (port,starboard). Maybe you are confussed as to who's bow AOB is about, uboot or target: people allways mean the target's AOB although they do not mention it. If an angle on the uboot's bow is meant it is called (relative) bearing. I hope you are not feeling intimidated by all this. I know this can be confussing as hell for some. But if you persist you'll get the hang of it sooner or later. And like I said, pen and paper are your friend! (or nav-map tools )