TDC -how to use

bech · 03-17-19, 10:01 AM

Hi all.
Quite new to in the TDC business.
In order to update the target bearing I do:
Use Attack periscope, point at the target - go to TDC: enter AOB - switch angle tracking to AP, correct?

Another thing: estimating the target range, seems like I continuously underestimate the range; ID target, (mast height / count number of centiradians) x 100 to get range in meters?
At what range can I expect to be spotted by the escorts, when surfaced at night, and same question for daytime?

Thank you for your support!

derstosstrupp · 03-21-19, 08:55 PM

Quote:

Originally Posted by bech

Hi all.
Quite new to in the TDC business.
In order to update the target bearing I do:
Use Attack periscope, point at the target - go to TDC: enter AOB - switch angle tracking to AP, correct?

Another thing: estimating the target range, seems like I continuously underestimate the range; ID target, (mast height / count number of centiradians) x 100 to get range in meters?
At what range can I expect to be spotted by the escorts, when surfaced at night, and same question for daytime?

Thank you for your support!

Only just got the game a few days ago so still getting used to this new sim concept but I’ve been subsimming for years.

You are correct in that in order for the bearing to update, you must select the optics you are viewing with the top right knob. I would do so prior to even using the optics but may not matter.

Formula for range is correct. Can’t speak to specific detection ranges but the following rules of thumb apply:

1. At night, overhaul the target at a range that allows you to just make out the AOB (if you can barely see them they likely can’t see you), then when far enough forward, approach with your bow to the escort for a low profile at a low speed.
2. During the day, shouldn’t see more than the tops of the masts. If you see hull, it’s time to pull the plug.

One more thing - we get a TDC now with the capability of compensating for own course changes, meaning there is no need to re-enter AOB after changing course. This was an important feature of the real one as it allowed the boat total freedom of maneuver during the attack.

Hope to catch you in-game - I am Stosstrupp on discord.

THEBERBSTER · 03-22-19, 05:33 AM

A Warm Welcome To The Subsim Community > bech
Subsim <> Make A Donation <> See The Benefits <> Support The Community

NO_TalentYi_RageController · 03-22-19, 07:05 AM

Still new here but for range estimates,

Mast Height / Centiradians * 4 @ 6x Zoom

It's very hard to gauge range at 1.5 zoom.

You can also use the range chart(C) to help.

Aktungbby · 03-22-19, 09:29 AM

bech!

bech · 03-22-19, 04:02 PM

Thank You for the welcome.
Got range estimate down now. Sunk a few vessels, but still missing quite often...
As I understand the most important input is AOB and target speed.
Great game, really looking forward to the updates.

Pisces · 03-22-19, 06:07 PM

Yup, distance only influences salvo spread and accuracy if the torpedo must turn (gyro angle away from bow/stern)

RealMadDad · 03-23-19, 03:39 AM

Pisces · 03-26-19, 08:15 AM

Well, distance is also needed for time to impact of course. But knowing that doesn't make the torpedo any more accurate on target.

03-17-19, 10:01 AM	#1
bech Nub Join Date: Sep 2018 Posts: 4 Downloads: 4 Uploads: 0	TDC -how to use Hi all. Quite new to in the TDC business. In order to update the target bearing I do: Use Attack periscope, point at the target - go to TDC: enter AOB - switch angle tracking to AP, correct? Another thing: estimating the target range, seems like I continuously underestimate the range; ID target, (mast height / count number of centiradians) x 100 to get range in meters? At what range can I expect to be spotted by the escorts, when surfaced at night, and same question for daytime? Thank you for your support!

03-22-19, 05:33 AM	#3
THEBERBSTER Growing Old Disgracefully Join Date: Dec 2012 Location: Hythe - Southampton Posts: 9,609 Downloads: 1133 Uploads: 0	A Warm Welcome To The Subsim Community > bech Subsim <> Make A Donation <> See The Benefits <> Support The Community __________________ LSH3-2015 <> TUTORIALS <> ALL YOU NEED TO KNOW <> ALL IN ONE PLACE SH4 <> TUTORIALS <> HOW TO DO IT <> INFORMATION <> DOWNLOAD LINKS SH5 <> TUTORIALS <> HOW TO DO IT <> INFORMATION <> DOWNLOAD LINKS Always Here To Help A Fellow 'Subber' \| Need An Answer to A Question Just Send Me A PM

03-22-19, 09:29 AM	#5
Aktungbby Gefallen Engel U-666 Join Date: Jul 2013 Location: On a tilted, overheated, overpopulated spinning mudball on Collision course with Andromeda Galaxy Posts: 29,984 Downloads: 24 Uploads: 0	welcome aboard! bech! __________________ "Only two things are infinite; The Universe and human squirrelyness?!!

03-23-19, 03:39 AM	#8
RealMadDad Mate Join Date: Mar 2017 Location: Vienna, Austria Posts: 51 Downloads: 21 Uploads: 0	will try it out __________________ RealMadDad Founder of the GLADIUS gaming community Strength and Honor!

03-22-19, 07:05 AM	#4
NO_TalentYi_RageController Nub Join Date: Mar 2019 Posts: 4 Downloads: 0 Uploads: 0	Still new here but for range estimates, Mast Height / Centiradians * 4 @ 6x Zoom It's very hard to gauge range at 1.5 zoom. You can also use the range chart(C) to help.

03-22-19, 04:02 PM	#6
bech Nub Join Date: Sep 2018 Posts: 4 Downloads: 4 Uploads: 0	Thank You for the welcome. Got range estimate down now. Sunk a few vessels, but still missing quite often... As I understand the most important input is AOB and target speed. Great game, really looking forward to the updates.

03-22-19, 06:07 PM	#7
Pisces Silent Hunter Join Date: Dec 2004 Location: AN9771 Posts: 4,904 Downloads: 304 Uploads: 0	Yup, distance only influences salvo spread and accuracy if the torpedo must turn (gyro angle away from bow/stern)

03-26-19, 08:15 AM	#9
Pisces Silent Hunter Join Date: Dec 2004 Location: AN9771 Posts: 4,904 Downloads: 304 Uploads: 0	Well, distance is also needed for time to impact of course. But knowing that doesn't make the torpedo any more accurate on target.