German TDC

[Pisces]

Originally Posted by Bubblehead1980

... I noticed the periscope is "enslaved" to the periscope cant input data,...

Typo there? Periscope slaved to periscope. I'll leave it to Stosstrup to answer. He is better at this, and I am not familiar with this particular GUI mod.

[derstosstrupp]

The easiest way to do it in SH games is to calculate the AOB that corresponds to a particular bearing, place your optics there, set the AOB into the computer and then press that TDC button you have circled. Then at that point as long as the target does not maneuver, you don’t need to update AOB again. Remember though that you can’t change course either because the TDC will not take that into account in the game.

For example:
I parallel the target at maximum range and I determine its course as 000. I overhaul it until I am a decent distance ahead and I dive. I approach on course 270. Once the range is about 1000 to 1500 m I start setting up the computer for the attack. I push the “button” to allow me to input data. Since I am on a perpendicular course, I place my scope on bearing zero, set the AOB right 90, and then press the TDC’s “button” again. Now when I slew back onto the target, the AOB will be correct in the computer.

If you are not on perpendicular course, you can use the attack disc or whatever course finder you prefer, or simply math to figure out the AOB based on the bearing.

Formula is:
AOB = Own course + relative bearing - 180 - Target course
If answer is less than -180, add 360
If answer is greater than 180, subtract 360
If answer is negative, target’s bow is left

[Bubblehead1980]

Originally Posted by derstosstrupp

The easiest way to do it in SH games is to calculate the AOB that corresponds to a particular bearing, place your optics there, set the AOB into the computer and then press that TDC button you have circled. Then at that point as long as the target does not maneuver, you don’t need to update AOB again. Remember though that you can’t change course either because the TDC will not take that into account in the game.

For example:
I parallel the target at maximum range and I determine its course as 000. I overhaul it until I am a decent distance ahead and I dive. I approach on course 270. Once the range is about 1000 to 1500 m I start setting up the computer for the attack. I push the “button” to allow me to input data. Since I am on a perpendicular course, I place my scope on bearing zero, set the AOB right 90, and then press the TDC’s “button” again. Now when I slew back onto the target, the AOB will be correct in the computer.

If you are not on perpendicular course, you can use the attack disc or whatever course finder you prefer, or simply math to figure out the AOB based on the bearing.

Formula is:
AOB = Own course + relative bearing - 180 - Target course
If answer is less than -180, add 360
If answer is greater than 180, subtract 360
If answer is negative, target’s bow is left

My problem is not the data its operating the German TDC properly but believe may just have it figured out.

Thanks for the help

[derstosstrupp]

My last post describes how to properly operate it but glad you’re sorted.

[Bubblehead1980]

Originally Posted by derstosstrupp

My last post describes how to properly operate it but glad you’re sorted.

Yes, I have it figured out now. Got a hit no problem on a night surface attack. Thanks for your help.

Main issue was adjusting to the German TDC, it differences, combined with using metric system. Once you clarified things, was clear I was not operating TDC properly so final bearing at firing was usually off causing misses astern even though had correct speed.


Thanks again

[derstosstrupp]

Originally Posted by Bubblehead1980

Yes, I have it figured out now. Got a hit no problem on a night surface attack. Thanks for your help.

Main issue was adjusting to the German TDC, it differences, combined with using metric system. Once you clarified things, was clear I was not operating TDC properly so final bearing at firing was usually off causing misses astern even though had correct speed.


Thanks again

You are very welcome, glad to see you are enjoying the German side.

[Bubblehead1980]

Originally Posted by derstosstrupp

You are very welcome, glad to see you are enjoying the German side.

I am enjoying it, a lot. Different set of challenges but enjoying it now have TDC figured out. I love the german torpedoes, one torpedo will take out most ships, sometimes fire two on larger ships for good measure. Although, torpedo problems early in war...duds, running deep, premature explosions such as on US side as well, although they mostly are solved earlier to some degree in summer 1940, but issues persisted for german torpedoes until 1942. I've been researching the "torpedokrise". I knew they had problems, but was not aware of the details, not discussed much unlike the US torpedo failures.

I am currently in April 1940, supporting the Norway invasion...first attack, perfect TDC set up from 2300 meters on surface at night. Fired one G7e which was a dud, then another, which was a dud's (did not have any of the G7a's loaded, those are in reserve). Ship seemed alerted after second hit, but lowered speed slightly, refined AOB and solution, turned the TDC on, fired 3, which hit. Ship sunk ten minutes later, 5022 ton merchant-British.

Looking forward to next few patrols as things ramp up in summer fall 1940 in north atlantic. Hoping to introduced some AI subs into the mod for wolfpack ops as I did in TMO, at some point.

[Bubblehead1980]

Originally Posted by Pisces

Typo there? Periscope slaved to periscope. I'll leave it to Stosstrup to answer. He is better at this, and I am not familiar with this particular GUI mod.

Yes, typo.