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Old 04-04-10, 12:01 PM   #1
gutted
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LOL the target was not doing 95 degrees.

95 degrees is easterly... not westerly.


Also, if you are pretty much perpindicular and looking "right", you can just do 90 - current bearing to get his AOB.
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Old 04-04-10, 12:13 PM   #2
ddrgn
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Shows how I get the math....

http://www.subsim.com/radioroom/show...27&postcount=8
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Old 04-04-10, 12:18 PM   #3
ddrgn
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Quote:
Originally Posted by gutted View Post
LOL the target was not doing 95 degrees.

95 degrees is easterly... not westerly.


Also, if you are pretty much perpindicular and looking "right", you can just do 90 - current bearing to get his AOB.
LOL Gutted, any small little mistakes I can chalk up too 8 shots of Jager

Course was indeed 275

Math should have been TC (275) + TTB (25) -180 = 120

Keep in mind tho that it was backwards math but adjusting the AOB to the right side of view compensated for that mistake.
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Old 04-04-10, 12:26 PM   #4
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Quote:
Originally Posted by ddrgn View Post
LOL Gutted, any small little mistakes I can chalk up too 8 shots of Jager
Indeed. I played once after coming home from a night out... and i fell asleep at the desk.
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Old 04-04-10, 01:00 PM   #5
funkster319
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From your post elsewhere:
Quote:
So its Target True Bearing + (plus) Ships Course - (minus) 180 = AOB Which in our case is:

50 + 270 - 180 = 140 AOB

Now adjust the range and confirm the speed.
Is the Target bearing (heading) relative to sub or to True North? Is there another step if your sub is not a 0degrees or is your sub heading irrelavent?

Quote:
Now if your True Target Bearing is 350°, you would simply minus 10 from the formula as so:

10 - 270 - 180 = 80 AOB
? Is this the only time the formula would change?

Sorry for all the dumb questions, I just havent seen this method before.
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Old 04-04-10, 01:15 PM   #6
ddrgn
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Relative Target Bearing or True Target Bearing (TTB) is relative to true North.

So if your Targets bearing via your scope is 45 degrees and your course is 350 degrees his TTB is 35 degrees. In this case lets say his course is 225 degrees

When you see him on the left side of your scope at 350 degrees you do the math like this:

225 - 35 - 180 = 10 degrees AOB

If his TTB is 15 degrees and his course is 300 then like this:

300 + 15 - 180 = 135 degrees

You either add or subtract depending on which side of your boat he is on.
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Old 04-04-10, 01:22 PM   #7
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Good luck doing this with Sonar only Hopefull after Patch 1.2 we'll have a similar system to SH4 on the Sonar Station, that worked really well.

By the way, mine's a Crown Royal
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Old 04-04-10, 01:23 PM   #8
ddrgn
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Sonar only is kind of useless without a properly working hydrophone. Would you like to see a tutorial showing how I play TMO using only my ears?
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Old 04-04-10, 02:45 PM   #9
ddrgn
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FYI - The mods I had installed during the video.

Most of the overwrites are just readme.txt files.

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Old 04-05-10, 06:51 PM   #10
Bilge_Rat
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very nice video, good work.
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Old 04-07-10, 11:17 PM   #11
I'm goin' down
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ddgrn

Hey, ddgrn!! My computer is down, has been and will be for the forseeable future. I am on a small laptop. Haven't play SH5. Is it from the German side? I watched your two videos on Youtube, and I thought they very good even though I haven't played. Nice work. I wonder if I will play SH5 or stick with SH4 and TMO1.9?
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Old 04-09-10, 04:25 AM   #12
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Superb video for those of us who do not usually use 100% realism, mainly because we don't know how!!

Thank you very much, hope to see more
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Old 04-04-10, 01:39 PM   #13
funkster319
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Quote:
Originally Posted by ddrgn View Post
Relative Target Bearing or True Target Bearing (TTB) is relative to true North.

So if your Targets bearing via your scope is 45 degrees and your course is 350 degrees his TTB is 35 degrees. In this case lets say his course is 225 degrees

When you see him on the left side of your scope at 350 degrees you do the math like this:

225 - 35 - 180 = 10 degrees AOB

If his TTB is 15 degrees and his course is 300 then like this:

300 + 15 - 180 = 135 degrees

You either add or subtract depending on which side of your boat he is on.
Aw Thanks Mate

So just to confirm -

1) I should be marking his postion on map with True Bearing calculations (To North) So therefore I will get his True bearing when I use ruler to join the marks (Good -This is what I have done in past)

True Bearing = My Course + Scope Bearing (target)*
*If over 360 then minus 180 to final calculation.

2) If Sub is on the targets port side (Left) then (TTB+ (plus) RB-180 = AOB)
-or-
If Sub is on the targets starboard (Right) then (TTB - minus) RB-180 = AOB)

3) I also assume that if you alter course then you must recalculate the whole solution?

Correct?

Thanks so much for this as it will really save me so much time - No more AOB wheels etc
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Old 04-04-10, 01:45 PM   #14
ddrgn
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Quote:
Originally Posted by funkster319 View Post
Aw Thanks Mate

So just to confirm -

1) I should be marking his postion on map with True Bearing calculations (To North) So therefore I will get his True bearing when I use ruler to join the marks (Good -This is what I have done in past)

True Bearing = My Course + Scope Bearing (target)*
*If over 360 then minus 180 to final calculation.

2) If Sub is on the targets port side (Left) then (TTB+ (plus) RB-180 = AOB)
-or-
If Sub is on the targets starboard (Right) then (TTB - minus) RB-180 = AOB)

3) I also assume that if you alter course then you must recalculate the whole solution?

Correct?

Thanks so much for this as it will really save me so much time - No more AOB wheels etc
Yep change course, solution changes this is where doing math in your head on the fly like our friend Gutted has mentioned, will benefit you greatly.
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Old 04-04-10, 01:24 PM   #15
gutted
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If you really want to do the math with a calculator.......


(Your Course - Target Course) - 180 = Angle On Bow at your nose.

If it's negative it's Port, if its positive its starboard. After you get the AOB at your nose.. just add or subtract the number of degrees you are looking to the side. Looking left.. subtract. Looking right... add.


.ie
Target Course 40
Ownship Course 290.

(290-40) - 180 = 70 AOB at your nose.

If looking left 30 degrees... subtract 30. .ie 40AOB Starboard.
If looking right 30 degrees.. add 30.. ie 100AOB Starboard.



example 2:

Target course 40
Ownship Couse 150

(150 - 40) - 180 = -70 AOB (remember negative is port)

If looking left 30 degrees... subtract 30 .ie -100 AOB Port
if Looking right 30 degrees... add 30. .ie -40 AOB Port.

just ignore the negative signs on the AOB.




That said... doing this with a calculator is totally unecessary. You can just do it by eye once you've practiced it enough.
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