Old fashion method for determining SPEED

don1reed · 06-16-06, 10:46 AM

1. Get on a Collision course with the Target.
Constant bearing plus closing Range = Collision Course.
Adjust your own course and/or speed.

2. Formula: Own Speed : Sin Target AoB : : Target Speed : Sin Target Bearing
3. If you have a sliderule hidden in the desk drawer, dust it off, this method is extreme fast.

Here are two views, one is of a regular sliderule, and the second is a circular sliderule. The logrithmic characteristic and function of sliderules makes this an easy problem. (apologies for the bit of blurriness)

Here's the same thing with a sliderule that I made from heavy card stock and covered in clear plastic at Kinko's used with the original Silent Hunter.

One side is sliderule the other is whiz-wheel.

Here's a pic of a rare WWII Uboat whiz-wheel

jason210 · 06-17-06, 06:10 AM

I made a similar device out of a piece of card and a piece of acetate. Works great foir torpedo attacks. Be a nice addition in a WWI sub sim.

http://www.sjobo.nu/resource/images/1.jpg

http://www.sjobo.nu/resource/images/2.jpg

http://www.sjobo.nu/resource/images/Render2.bmp

Anybody who wants the plans for this can get them from me.

I've also made a 3D model of this, that runs as a small program (.exe). You just need to minimise the game and get it up, but you can make notes from it and be ready to fire the torpedo at a certain time and certain angle.

JohnnyBlaze · 06-18-06, 10:43 AM

Quote:

Originally Posted by jason210

I made a similar device out of a piece of card and a piece of acetate. Works great foir torpedo attacks. Be a nice addition in a WWI sub sim.

http://www.sjobo.nu/resource/images/1.jpg

http://www.sjobo.nu/resource/images/2.jpg

http://www.sjobo.nu/resource/images/Render2.bmp

Anybody who wants the plans for this can get them from me.

I've also made a 3D model of this, that runs as a small program (.exe). You just need to minimise the game and get it up, but you can make notes from it and be ready to fire the torpedo at a certain time and certain angle.

ME ME ME ME!

I would pretty much appreciate the program you've made so if you put it online then I'm sure to get it.

Thanks for the effort

Augie64 · 06-19-06, 10:52 PM

Oooooo A bearing Rate Computer......

Alyebard · 06-22-06, 06:03 AM

Quote:

Originally Posted by jason210

I made a similar device out of a piece of card and a piece of acetate. Works great foir torpedo attacks. Be a nice addition in a WWI sub sim.

http://www.sjobo.nu/resource/images/1.jpg

http://www.sjobo.nu/resource/images/2.jpg

http://www.sjobo.nu/resource/images/Render2.bmp

Anybody who wants the plans for this can get them from me.

I've also made a 3D model of this, that runs as a small program (.exe). You just need to minimise the game and get it up, but you can make notes from it and be ready to fire the torpedo at a certain time and certain angle.

Please
amajosabater(at)gmail.com

thanks in advance

don1reed · 06-23-06, 09:00 AM

Here's an example of how it all works: Submerged, daylight torpedo attack.

I've spotted a small convoy on my port bow, heading east. I adjust my course and/or speed to get into a collision course with the medium merchant (c2), so that it's bearing is constant:

My Course = 006° True...

The target ship's AOB appears to be about 30° starboard...
I then apply the information to my combination "whiz-wheel"...

My "whiz-wheel" consists of 3 layered wheels.
The Large wheel represents TRUE Compass.
The Middle wheel represents the Submarine.
The Small wheel represents the Target.

Now that I know the target's Bearing and AOB, they point to the target's TRUE Course of 095°.

I need to compute the target's speed to complete my firing solution, so I flip the whiz-wheel to the opposite side and use the circular slide rule.

After plugging the info into the vorhaltrectner/TDC, I slow the boat to 1 kn. and wait for the target to reach about 70° AOB before pulling the trigger.

I might add here, that I never worry about RANGE.
Something I learned in the ACADEMY is, if the target (see above) fills 1/3 of the viewfinder in x1.5...you are within 1000m. So, whenever you get a sight picture like that (NO MATTER THE WEATHER)...you are close enough to kill.

Hope this made sense.

cheers,

greyrider · 06-17-06, 07:33 AM

if you guys like these calculators and whizwheels, then you probably
would really like these.
these are not mine, they were made by a guy by the name of kim ronhof,
and was made for silent hunter I
these will probably be very good for sh4, when it comes out, if its the pacific theater.

Kim Rønhof tools
the first thing you need to do in order to see these whis wheels and tools is to download
a free demo of DELTACAD.
you can get it here:
http://www.deltacad.com/demo.html
download and install this program, then go to my rapidshare tactical folder and download
the all six files from the kim's tools folder, then open the files with deltacad.
the doc file shows you and instructs you on how to make the tools.
i downloaded these a few years ago, and they are really nice.

my tactical folder is here at rapidshare,

http://rapidshare.de/users/7G4TQT/9

the password is

silenthunter

the tools are

KimsTDCManualManualMk7.doc.htm
Kims_COURCE_CALCULATOR_MARK_4B
Kims_RANGE_CALCULATOR_MARK_3B
Kims_MANUALTDC_1
RADAR_PLOTTER_MARK_8_BX

don1reed · 06-17-06, 09:21 AM

Glad y'awl liked these items...

...I've always dreamed that the Devs of any subsim would include a "cut-out" whiz-wheel to go along with the package of maps 'n charts and "cheat" sheets.

They're not hard to make. I have the pieces on files. Is it possible to upload them to Terrapin's sight?

@jason210: check your PM. tnx.

@greyrider: You said it, brother, Kim Ronhof, is the best!

CptGrayWolf · 06-17-06, 11:43 AM

Quote:

Originally Posted by don1reed

...I've always dreamed that the Devs of any subsim would include a "cut-out" whiz-wheel to go along with the package of maps 'n charts and "cheat" sheets.

Eh, they can't even make a decent manual nowadays...but that would be great. Hopefully in SHIV they will give us more documentation/maps etc... and realise that not all gamers suffer from Attention Deficit Disorder.
Good job

greyrider · 06-17-06, 01:11 PM

don
that slide rule is very nice, do you have that in your possession?
can it be bought?

i love tools of the trade!

don1reed · 06-17-06, 01:21 PM

...greyrider...if you mean the laminated bamboo Hemmi versalog model...part of the legacy for the sons'. Both circular models are home-made, however.

Those interested in BUILDING one of their own, need to look here:

http://www.sphere.bc.ca/test/build.html

coronas · 06-17-06, 01:30 PM

An idea for guru moders. Can anybody make a ruler as this in the same way than dragabble crono for TDC screen?

IronOutlaw · 06-17-06, 07:55 PM

Hi Jason210

The stuff you have created sounds most interesting. If you can send me the plans and program you refer to at hmsironduke@ozemail.com.au I would be most grateful.

Cheers

Dantenoc · 06-20-06, 01:21 AM

Smart stuff

, very nice.

Linton · 06-20-06, 06:05 PM

Has anybody tried to make a Spears wheel?it was made to compute periscope look interval.

Can anyone clean the image up to make it readable?

06-16-06, 10:46 AM	#1
don1reed Ace of the Deep Join Date: Dec 2004 Location: Valhalla: Silent Generation Posts: 1,149 Downloads: 910 Uploads: 0	Old fashion method for determining SPEED 1. Get on a Collision course with the Target. Constant bearing plus closing Range = Collision Course. Adjust your own course and/or speed. 2. Formula: Own Speed : Sin Target AoB : : Target Speed : Sin Target Bearing 3. If you have a sliderule hidden in the desk drawer, dust it off, this method is extreme fast. Here are two views, one is of a regular sliderule, and the second is a circular sliderule. The logrithmic characteristic and function of sliderules makes this an easy problem. (apologies for the bit of blurriness) Here's the same thing with a sliderule that I made from heavy card stock and covered in clear plastic at Kinko's used with the original Silent Hunter. One side is sliderule the other is whiz-wheel. Here's a pic of a rare WWII Uboat whiz-wheel __________________ [SIGPIC][/SIGPIC] During times of universal deceit, telling the truth becomes a revolutionary act. ~ George Orwell Last edited by don1reed; 06-16-06 at 10:12 PM.

06-17-06, 06:10 AM	#2
jason210 Sonar Guy Join Date: Sep 2002 Location: Sweden / UK Posts: 386 Downloads: 33 Uploads: 0	Similar device I made a similar device out of a piece of card and a piece of acetate. Works great foir torpedo attacks. Be a nice addition in a WWI sub sim. http://www.sjobo.nu/resource/images/1.jpg http://www.sjobo.nu/resource/images/2.jpg http://www.sjobo.nu/resource/images/Render2.bmp Anybody who wants the plans for this can get them from me. I've also made a 3D model of this, that runs as a small program (.exe). You just need to minimise the game and get it up, but you can make notes from it and be ready to fire the torpedo at a certain time and certain angle. __________________ Intel Core i9-9900K @ 3.6 GHz nVidia GeForce RTX 2070 32GB memory Windows 10 Pro Last edited by jason210; 06-17-06 at 06:18 AM.

06-19-06, 10:52 PM	#4
Augie64 Swabbie Join Date: Mar 2005 Posts: 5 Downloads: 1 Uploads: 0	Oooooo A bearing Rate Computer...... __________________ Augie\'s Mod area located at www.subsim.com www.64bitstuff.com

06-23-06, 09:00 AM	#6
don1reed Ace of the Deep Join Date: Dec 2004 Location: Valhalla: Silent Generation Posts: 1,149 Downloads: 910 Uploads: 0	Here's an example of how it all works: Submerged, daylight torpedo attack. I've spotted a small convoy on my port bow, heading east. I adjust my course and/or speed to get into a collision course with the medium merchant (c2), so that it's bearing is constant: My Course = 006° True... The target ship's AOB appears to be about 30° starboard... I then apply the information to my combination "whiz-wheel"... My "whiz-wheel" consists of 3 layered wheels. The Large wheel represents TRUE Compass. The Middle wheel represents the Submarine. The Small wheel represents the Target. Now that I know the target's Bearing and AOB, they point to the target's TRUE Course of 095°. I need to compute the target's speed to complete my firing solution, so I flip the whiz-wheel to the opposite side and use the circular slide rule. After plugging the info into the vorhaltrectner/TDC, I slow the boat to 1 kn. and wait for the target to reach about 70° AOB before pulling the trigger. I might add here, that I never worry about RANGE. Something I learned in the ACADEMY is, if the target (see above) fills 1/3 of the viewfinder in x1.5...you are within 1000m. So, whenever you get a sight picture like that (NO MATTER THE WEATHER)...you are close enough to kill. Hope this made sense. cheers, __________________ [SIGPIC][/SIGPIC] During times of universal deceit, telling the truth becomes a revolutionary act. ~ George Orwell Last edited by don1reed; 06-23-06 at 09:14 AM.

06-17-06, 07:33 AM	#7
greyrider Watch Officer Join Date: Apr 2005 Location: massachusetts Posts: 334 Downloads: 237 Uploads: 0	if you guys like these calculators and whizwheels, then you probably would really like these. these are not mine, they were made by a guy by the name of kim ronhof, and was made for silent hunter I these will probably be very good for sh4, when it comes out, if its the pacific theater. Kim Rønhof tools the first thing you need to do in order to see these whis wheels and tools is to download a free demo of DELTACAD. you can get it here: http://www.deltacad.com/demo.html download and install this program, then go to my rapidshare tactical folder and download the all six files from the kim's tools folder, then open the files with deltacad. the doc file shows you and instructs you on how to make the tools. i downloaded these a few years ago, and they are really nice. my tactical folder is here at rapidshare, http://rapidshare.de/users/7G4TQT/9 the password is silenthunter the tools are KimsTDCManualManualMk7.doc.htm Kims_COURCE_CALCULATOR_MARK_4B Kims_RANGE_CALCULATOR_MARK_3B Kims_MANUALTDC_1 RADAR_PLOTTER_MARK_8_BX __________________ Her gun crew had guts, however, for from her canting bow came a half dozen well-aimed rounds. How they pointed and trained their gun on that tilting platform will long remain a wonder, and their dedication in keeping up the fire until they went under would be a matter of pride to any nation. O'Kane, Richard. Clear the Bridge!: The War Patrols of the U.S.S. Tang

06-17-06, 09:21 AM	#8
don1reed Ace of the Deep Join Date: Dec 2004 Location: Valhalla: Silent Generation Posts: 1,149 Downloads: 910 Uploads: 0	Glad y'awl liked these items... ...I've always dreamed that the Devs of any subsim would include a "cut-out" whiz-wheel to go along with the package of maps 'n charts and "cheat" sheets. They're not hard to make. I have the pieces on files. Is it possible to upload them to Terrapin's sight? @jason210: check your PM. tnx. @greyrider: You said it, brother, Kim Ronhof, is the best! __________________ [SIGPIC][/SIGPIC] During times of universal deceit, telling the truth becomes a revolutionary act. ~ George Orwell Last edited by don1reed; 06-17-06 at 11:25 AM.

06-17-06, 01:11 PM	#10
greyrider Watch Officer Join Date: Apr 2005 Location: massachusetts Posts: 334 Downloads: 237 Uploads: 0	don that slide rule is very nice, do you have that in your possession? can it be bought? i love tools of the trade! __________________ Her gun crew had guts, however, for from her canting bow came a half dozen well-aimed rounds. How they pointed and trained their gun on that tilting platform will long remain a wonder, and their dedication in keeping up the fire until they went under would be a matter of pride to any nation. O'Kane, Richard. Clear the Bridge!: The War Patrols of the U.S.S. Tang

06-17-06, 01:21 PM	#11
don1reed Ace of the Deep Join Date: Dec 2004 Location: Valhalla: Silent Generation Posts: 1,149 Downloads: 910 Uploads: 0	...greyrider...if you mean the laminated bamboo Hemmi versalog model...part of the legacy for the sons'. Both circular models are home-made, however. Those interested in BUILDING one of their own, need to look here: http://www.sphere.bc.ca/test/build.html __________________ [SIGPIC][/SIGPIC] During times of universal deceit, telling the truth becomes a revolutionary act. ~ George Orwell Last edited by don1reed; 06-17-06 at 04:22 PM.

06-17-06, 01:30 PM	#12
coronas Ace of the Deep Join Date: May 2005 Location: Asturias, España Posts: 1,168 Downloads: 39 Uploads: 0	An idea for guru moders. Can anybody make a ruler as this in the same way than dragabble crono for TDC screen?

06-17-06, 07:55 PM	#13
IronOutlaw Loader Join Date: Jan 2006 Location: Stewarts River, NSW, Australia Posts: 82 Downloads: 17 Uploads: 0	Manual Calculators Hi Jason210 The stuff you have created sounds most interesting. If you can send me the plans and program you refer to at hmsironduke@ozemail.com.au I would be most grateful. Cheers __________________ Mit Kameradschaftlichen Grüßen Kapitänleutnant Wilhelm Weiß Unterbefehlshaber der 33te U-boot. Flot.

06-20-06, 01:21 AM	#14
Dantenoc Captain Join Date: Jan 2006 Location: Ensenada, B.C., Mexico Posts: 504 Downloads: 0 Uploads: 0	Smart stuff , very nice.

06-20-06, 06:05 PM	#15
Linton Sea Lord Join Date: Dec 2003 Posts: 1,898 Downloads: 0 Uploads: 0	Has anybody tried to make a Spears wheel?it was made to compute periscope look interval. Can anyone clean the image up to make it readable? __________________ http://lintonsview.blogspot.com/ Last edited by Linton; 06-20-06 at 06:13 PM.