Any Guess As To Why?

[Simmy]

For some reason when I fire an aft tube the torp runs 100/200 yards or so and does a sudden turn to the left, as looking at the back of the sub.
Then I got bumped up to a tambor and now when I try to fire a rear end shot I get "cannot compute firing solution for aft tube".

If I fire a bow tube, put scope or tbt on "0" and fire, the torp runs down the line straight and true no problem. I did notice that the tambor has only 2 men for each watch now with the combo of mods I'm using. I believe they had 3 before so maybe that's the problem?

Mods:
TMO 2.5
TMO fix 2.5
RSRD V502
Taveller Mod 2.6
Traveller automatic ship ID
3,000 yard bearing tool
Bigger Better Protractors
MaxOptic IV for TMO 2

Thanks.

[Bubblehead1980]

For some reason when I fire an aft tube the torp runs 100/200 yards or so and does a sudden turn to the left, as looking at the back of the sub.
Then I got bumped up to a tambor and now when I try to fire a rear end shot I get "cannot compute firing solution for aft tube".

If I fire a bow tube, put scope or tbt on "0" and fire, the torp runs down the line straight and true no problem. I did notice that the tambor has only 2 men for each watch now with the combo of mods I'm using. I believe they had 3 before so maybe that's the problem?

Mods:
TMO 2.5
TMO fix 2.5
RSRD V502
Taveller Mod 2.6
Traveller automatic ship ID
3,000 yard bearing tool
Bigger Better Protractors
MaxOptic IV for TMO 2

Thanks.

Thinking you have your AOB set incorrectly or range is set too close.Double check the rang and AOB you have inputted.Make sure all info has been properly inputted to TDC

The cannot compute solution shoudl be easily solved by entering a 180 bearing into the tubes, if not try adding aob and speed.

[Simmy]

Bubblehead1980,
Thanks for your reply. I forgot to say that I am not using the TDC, otherwise your advise would hit the nail on the head.
Instead I have been using the "Solution Solver". It works great as far as bow shots go. Haven't had the chance to use it for an aft shot since the aft torps simply refuse to fire.:/\\!!

[in_vino_vomitus]

Check the tdc before firing. If you're firing a stern shot, you'll need to tell it that's what you're doing - set the periscope on 180 deg, and set the range to 1000 yards or so and send that to the tdc using the attack data tool. thing with the TDC is you can't turn it off as such. all you can do is set it to straight ahead or straight astern, but it will always have an input on your gyro angle. If the torpedo track arrow on the TDC is pointing dead ahead, it won't allow you to fire the rear tubes.

Hope that makes sense.....

[BigWalleye]

The problem might be if you are trying to fire on a zero bearing when you want to fire at a zero gyro angle. A zero gyro angle for the stern tubes occurs when the firing bearing is 180. You have to make sure you are looking along 180 when you fire.

[grislyatoms]

"If you're firing a stern shot, you'll need to tell it that's what you're doing - set the periscope on 180 deg, and set the range to 1000 yards or so and send that to the tdc using the attack data tool. thing with the TDC is you can't turn it off as such"

This is most likely the problem. Periscope not set to 180 when you enter your data (range, aob, and speed) into the tdc for a stern shot. A quick check of the tdc angles (or a look at the attack map, even better) will show your solution. If the attack map shows the torpedo coming out of the front tube and turning sharply behind you...need to set periscope to 180.

[grislyatoms]

The problem might be if you are trying to fire on a zero bearing when you want to fire at a zero gyro angle. A zero gyro angle for the stern tubes occurs when the firing bearing is 180. You have to make sure you are looking along 180 when you fire.

And this.

[Simmy]

Thanks for the replies you guys.
But as I mentioned, I'm not using the TDC. Instead I use the "Solution Solver".
I have played around a bit with the thing and am now convinced that it's a bug or something in one of the mods, or how the mods overwrite each other.
I have tried firing on the surface and below the water. And I was looking straight down the 180º scope line. The torps either fly off to the left, and as of late, they have taken off to the right. Or they simply refuse to fire.
I'm sure once I go through the mods I will find the one causing the problem.

Thanks again.:)

[in_vino_vomitus]

not so much Looking along 180, as pointing the scope that way and sending the bearing to the TDC - After that, you can look any way you like, the torpedo will travel 180 degrees relative to your heading

[in_vino_vomitus]

Thanks for the replies you guys.
But as I mentioned, I'm not using the TDC. Instead I use the "Solution Solver".
I have played around a bit with the thing and am now convinced that it's a bug or something in one of the mods, or how the mods overwrite each other.
I have tried firing on the surface and below the water. And I was looking straight down the 180º scope line. The torps either fly off to the left, and as of late, they have taken off to the right. Or they simply refuse to fire.
I'm sure once I go through the mods I will find the one causing the problem.

Thanks again.:)

You aren't using the TDC to aim, but it still controls the gyro angle your torpedo has. If the track angle arrow points dead ahead, and you're trying to fire a stern tube, you won't be able to, because the TDC will be trying to give it a 180 deg gyro angle. If you want to make a stern shot, you need to set your scope to 180 and your range to a thousand yards or so - then enter that into the TDC. There is no other option. In the game at least, the TDC always determines your gyro angle. You aren't using it to generate a firing solution, but you still need to tell it which way you want your fish to go - default is straight ahead, which is why the problem you have shows up when you try to fire the other way.

P.S. My TMO install was very similar to yours at one point, and I use the solution solver too sometimes. I absolutely guarantee you that if you don't input a 180 degree bearing into the TDC, you won't be able to make a stern shot.

[grislyatoms]

Right. What matters is the bearing the periscope is on when you send target data. You can then look at the moon, sky, stars, :D whatever with the periscope, the torpedo will fire on the periscope bearing you set earlier.

I had this exact same problem a couple years back when I first started SHIV. 0 degree shot, hit, and I would watch the target sink. Down periscope. What I hadn't taken into account was that the periscope was still pointing 10-20 degrees relative from watching the sinking. Another contact comes along and I begin to enter data. Screwy solutions every time because the periscope wasn't at 0 when I entered the data. Result was torpedoes going every which way:oops: until I figured it out (with help from some of the folks here).

[grislyatoms]

FWIW, a 90 degree shot at a moving target is always going to have at least some degree of gyro influence. This is why the torpedoes run straight for a bit and then angle off. This is normal. A target at a dead stop 90 degree shot is going to be 0 gyro angle. Torpedoes will run perfectly straight. You can also "trick" TDC into straight shots by setting... drum roll please... target speed 0.

(This also assumes sub stopped/not turning, or at least not turning and PK off.)

Hope that helps and I didn't further "muddy the waters".

[in_vino_vomitus]

This shows what a complete saddo I am, but I nipped into the mission editor and placed a ship about two klicks behind a sargo class - both stationary.

Looking through the periscope at the target, selecting tube 5 and hitting fire brings up the "cannot compute...." message, and if you mouseover the torpedo track arrow, you get its bearing and gyro angle info - which as you can see, is all wrong for a target to the rear, because the TDC is still set to its default setting of straight ahead......

By the way, you can ignore the top dial - the only one you're interested in is the lower dial, which shows sub/torpedo info. The sub outline is pointing upwards, because the TDC thinks the target is in front [default]

http://farm3.staticflickr.com/2805/9424331696_f907dbe729_b.jpg

Opening up the attack data tool, and entering an arbitrary range into the TDC, with the scope pointing 180, gives us a different display. I forgot to mouseover the Torpedo track arrow, but it's going to say bearing 180, gyro angle 0...... Also don't forget to click twice on the red button... As you can see, the sub outline is bow down because the TDC knows the target [top dial] is at 180. No target info is needed.

http://farm6.staticflickr.com/5503/9424333212_72dbfdbb9a_b.jpg

So now, when I fire, the torpedo goes straight astern.....

http://farm8.staticflickr.com/7289/9424333760_a0912f7c32_b.jpg

It helps to have an enemy in your sights though.......

http://farm6.staticflickr.com/5327/9421564129_41d69bae24_b.jpg

Anyway, try this, I bet it does the trick.....

[grislyatoms]

A picture is worth 1000 words! :D

[Simmy]

Thank you Mr. in_vino_vomitus
What your saying now makes sense to me. It sometimes takes awhile, and the help from helpful people.
I will try your advise and see how it goes.:yeah:

Thank you all for your help!

[in_vino_vomitus]

Bitte schon :)

[grislyatoms]

"By George, I believe he's got it!"
Nice work vino! good hunting, Simmy!:salute:

Above, I mentioned the "straight shot". It becomes incredibly useful in certain situations. Imagine that you just put a couple torpedoes in a high-value target. Yet, she didn't sink. If she has way on, she'll start zigging and zagging as if there were no tomorrow. (Which for her, there won't be...:D)

In that situation, I like to shadow her for a bit. She may yet sink, especially in high seas.

If she doesn't -

Set periscope to 0 degrees. Set an arbitrary number for range, AOB doesn't really matter (in this situation) as she's changing course too quickly to keep updating it and it's a straight shot anyway. Set target speed 0. Using the = key (set course to view) keep your bow pointed at her. Watch how many degrees to port and starboard she's zig-zagging. Set tube 1 to a couple degrees less than she's zigging (using the offset dial), leave tube 3 at 0, set tube 5 to a couple degrees less than she's zagging. When your bow is dead on to her, fire all 3. Congrats, you've just fired a spread!:yeah:

The above can be refined with experience. (Not to say that I am some sort of expert...nor did I gain that knowledge without a lot of help and trial and error)
As always, Good Hunting! :arrgh!:

[grislyatoms]

Oh, and btw, I do use the PK at times. Depends on the situation.

[TorpX]

If you are not using the TDC, and simply switch to a aft tube, the TDC mechanism will try to compute a solution for whatever happens to be stored in the TDC default target location (most likely 0 bearing, short range). Since it cannot set a 180 gyro angle, it will behave oddly. You must set the bearing to 180 and input a sensible range and hit the send to TDC button. That should get the gyro angle for the aft tubes to be 0. If you switch back to the forward tubes you have to input a 0 bearing before you use them, for the same reason.

You should be able to directly set a certain gyro angle into your torpedoes, fwd and aft, easily, but apparently we can't.

[Simmy]

So I set the TDC to 180 degrees and range at whatever, opened the aft tube and fired. The torp came out and ran hot and true straight down the 180 line. I then swung around to 0, open the tube and fired. I got, "Cannot Compute Data For Bow Tubes". EUREKA!!!

I guess I always assumed the gyro angle was set at zero and would fire straight out the front or back. I always used auto targeting in the past only switching to manual as off late.

I thank you all for making clear one of lifes greatest mysteries in my humble existence.:D

A big thank you and a salute to you all.:salute:

[in_vino_vomitus]

Thanks for letting us know it worked :)

[Armistead]

So I set the TDC to 180 degrees and range at whatever, opened the aft tube and fired. The torp came out and ran hot and true straight down the 180 line. I then swung around to 0, open the tube and fired. I got, "Cannot Compute Data For Bow Tubes". EUREKA!!!

I guess I always assumed the gyro angle was set at zero and would fire straight out the front or back. I always used auto targeting in the past only switching to manual as off late.

I thank you all for making clear one of lifes greatest mysteries in my humble existence.:D

A big thank you and a salute to you all.:salute:

Glad it worked for you Stimey.

[TorpX]

Good luck and good hunting. :salute:

[hunter301]

[QUOTE=grislyatoms;2094474Using the = key (set course to view) keep your bow pointed at her. [/QUOTE]

OK I just have to ask this. I knew there was a key that allowed this but it's not on any of the key command charts or in the key legend in the book.
Does it reference these other key commands some were in the book?

[TorpX]

If you're talking about the game manual that came with one of the early versions of the disc, it's FUBAR.

I just checked my key chart - you're right, it's not there.

Don't rely on the game manual. It will mislead you.

[hunter301]

If you're talking about the game manual that came with one of the early versions of the disc, it's FUBAR.

I just checked my key chart - you're right, it's not there.

Don't rely on the game manual. It will mislead you.


The equal key seams to have some flaws. I was running a quick mission last night to test out this new found quick course change miracle but it only worked the first time. After that I tried to to change course to come to several new bearings I was looking at thru the scope but it kept giving me course corrections but not the ones I was looking at.
This would have been so much easier of a function to use than constantly having to go to your compass and input new headings everytime.

[TorpX]

The equal key seams to have some flaws. I was running a quick mission last night to test out this new found quick course change miracle but it only worked the first time. After that I tried to to change course to come to several new bearings I was looking at thru the scope but it kept giving me course corrections but not the ones I was looking at.


I've never noticed any problem with it.

Were you trying to make rapid course changes? Something like that might mess up your helmsman's efforts. Other than that, I can't think of any explanation.