how to re-set the tdc

Joe S · 01-30-08, 09:28 PM

I had a great shot at a large merchant right in front of me at about 500 yds but for some reason the TDC was aimed at a target off my stern. I tried re-entering the bearing and range and even hit the button to shut the tdc off and start over but it would not re-set. two torpedoes were wasted. What is the fix or correct procedure? Thanks! Joe S

Rockin Robbins · 01-30-08, 09:38 PM

Entering new data replaces the old. In order to switch to a new target you have to enter info in this order (the first two can be reversed without bad effects): speed of new target, AoB of new target, and last (that is important!) the range/bearing of the new target. It is not necessary to turn off the position keeper at all. Make sure you didn't forget anything by switching to the attack screen to ensure that your target is properly entered before you fire. Always verify that you have a good solution before firing, as the real boats also did.

If you do not have time for that, can you afford to waste a torpedo? If not, start over with a new setup. Patience, grasshopper!:hmm:

Joe S · 01-30-08, 10:12 PM

Thanks for the help rockin robbins! I had the target locked in the scope when I re-set with the new bearing and aob,does it make any difference if the target is locked or not? Thanks! Joe S

Powerthighs · 01-31-08, 02:04 AM

No, it doesn't make any difference. When you click the "send range" button the bearing the periscope is currently pointing to is sent as well. Having the target locked just makes sure the scope stays pointed at the middle of the ship whlie you move the mouse to click the button.

Torpex752 · 01-31-08, 06:47 AM

Make sure you didnt have a stern tube selected for a forward shot.

Frank

Rockin Robbins · 01-31-08, 07:15 AM

No, the "is the lock necessary" question was the first step in my development of the Dick O'Kane targeting technique, where I turn the @#$@# PK off, throw target range out the window, sight the TDC at a presently empty spot in the ocean and aim so accurately that I can hit 5 yards aft of the bow crane.

The periscope lock has nothing to do with targeting other than holding the periscope's crosshairs on the middle of the target. For conventional targeting this is a great thing because you're doing so much input all at once.

Also, the PK must be on to show the impact point on the target. With the PK off, you can see the torpedo track on the attack screen but not the impact point. With the Dick O'Kane you never see the "x" on the target and you won't miss it either.

01-30-08, 09:28 PM	#1
Joe S XO Join Date: Jan 2002 Posts: 409 Downloads: 28 Uploads: 0	how to re-set the tdc I had a great shot at a large merchant right in front of me at about 500 yds but for some reason the TDC was aimed at a target off my stern. I tried re-entering the bearing and range and even hit the button to shut the tdc off and start over but it would not re-set. two torpedoes were wasted. What is the fix or correct procedure? Thanks! Joe S

01-30-08, 09:38 PM	#2
Rockin Robbins Navy Seal Join Date: Mar 2007 Location: DeLand, FL Posts: 8,900 Downloads: 135 Uploads: 52	The TDC works like a spreadsheet Entering new data replaces the old. In order to switch to a new target you have to enter info in this order (the first two can be reversed without bad effects): speed of new target, AoB of new target, and last (that is important!) the range/bearing of the new target. It is not necessary to turn off the position keeper at all. Make sure you didn't forget anything by switching to the attack screen to ensure that your target is properly entered before you fire. Always verify that you have a good solution before firing, as the real boats also did. If you do not have time for that, can you afford to waste a torpedo? If not, start over with a new setup. Patience, grasshopper!:hmm: __________________ Sub Skipper's Bag of Tricks, Slightly Subnuclear Mk 14 & Cutie, Slightly Subnuclear Deck Gun, EZPlot 2.0, TMOPlot, TMOKeys, SH4CMS

01-31-08, 07:15 AM	#6
Rockin Robbins Navy Seal Join Date: Mar 2007 Location: DeLand, FL Posts: 8,900 Downloads: 135 Uploads: 52	I can drive a truck through that opening! No, the "is the lock necessary" question was the first step in my development of the Dick O'Kane targeting technique, where I turn the @#$@# PK off, throw target range out the window, sight the TDC at a presently empty spot in the ocean and aim so accurately that I can hit 5 yards aft of the bow crane. The periscope lock has nothing to do with targeting other than holding the periscope's crosshairs on the middle of the target. For conventional targeting this is a great thing because you're doing so much input all at once. Also, the PK must be on to show the impact point on the target. With the PK off, you can see the torpedo track on the attack screen but not the impact point. With the Dick O'Kane you never see the "x" on the target and you won't miss it either. __________________ Sub Skipper's Bag of Tricks, Slightly Subnuclear Mk 14 & Cutie, Slightly Subnuclear Deck Gun, EZPlot 2.0, TMOPlot, TMOKeys, SH4CMS

01-30-08, 10:12 PM	#3
Joe S XO Join Date: Jan 2002 Posts: 409 Downloads: 28 Uploads: 0	Thanks for the help rockin robbins! I had the target locked in the scope when I re-set with the new bearing and aob,does it make any difference if the target is locked or not? Thanks! Joe S

01-31-08, 02:04 AM	#4
Powerthighs Beach Leaf Join Date: Apr 2007 Location: Seattle, WA Posts: 287 Downloads: 11 Uploads: 0	No, it doesn't make any difference. When you click the "send range" button the bearing the periscope is currently pointing to is sent as well. Having the target locked just makes sure the scope stays pointed at the middle of the ship whlie you move the mouse to click the button.

01-31-08, 06:47 AM	#5
Torpex752 Lieutenant Join Date: Mar 2006 Location: Deep River, CT Posts: 255 Downloads: 1 Uploads: 0	Make sure you didnt have a stern tube selected for a forward shot. Frank