"Rundhorchen" - Listening around for contacts on which depth???

Pittiplatsch · 09-15-07, 02:23 PM

Hi Kaleuns,

I have 2 questions:

1.) In reality during WW2:
If the Kaleuns of german U-Boots wanted to listen around for contacts (Rundhorchen) - On which depth did they go?
On which depth did they reach the best result (Longest range) in listening around?

2.) Same question, but for "using GWX":
If I want to listen around (Rundhorchen) for contacts in GWX - On which depth should I go? Is there a particular depth on which I will get the longest range in listening around (Rundhorchen)?
Or do I get the same range (no matter how deep I'm)?
Should I go on 14 meters, 30 meters or ?? meters depth?

Greetz

froschman · 09-15-07, 02:35 PM

I go to about 20 m depth, when trying to find ships outside the visual range. I have not made any detailed study, but my impression is that this works pretty well.

Spruence M · 09-15-07, 03:08 PM

Captian on Das Boot went to 25 meters.

Jimbuna · 09-15-07, 03:37 PM

I think you get the same range regardless of your submerged depth :hmm:

Brag · 09-15-07, 09:35 PM

Quote:

Originally Posted by jimbuna

I think you get the same range regardless of your submerged depth :hmm:

I think in reality 30 meters worked best.
In sh 3 any depth 12 or more meters works the same

looney · 09-15-07, 03:41 PM

I have read a book on a dutch sub wich did most of their under water stuf at 35m.
So most likely each kaleun would have his own personal depth for it.

BelegDraug · 09-15-07, 05:03 PM

Well, in the "real-real" world ('cause for me, GWX is just like the "real" world), the distance of the hidrophone would change with the temperature and salt of water. This same principles and theorys are used today estimating the modern SONAR capabilities and other stuff.-

Heibges · 09-15-07, 05:25 PM

The Uboat Commanders Handbook says it should be done at 20m travelling at Silent Running.

Afterwards you should go up to PD, and have a look around.

Finally, resurface at High Speed.

09-15-07, 02:23 PM	#1
Pittiplatsch Mate Join Date: May 2006 Location: DDR, Deutsche Demokratische Republik, German Democratic Republic Posts: 51 Downloads: 33 Uploads: 0	"Rundhorchen" - Listening around for contacts on which depth??? Hi Kaleuns, I have 2 questions: 1.) In reality during WW2: If the Kaleuns of german U-Boots wanted to listen around for contacts (Rundhorchen) - On which depth did they go? On which depth did they reach the best result (Longest range) in listening around? 2.) Same question, but for "using GWX": If I want to listen around (Rundhorchen) for contacts in GWX - On which depth should I go? Is there a particular depth on which I will get the longest range in listening around (Rundhorchen)? Or do I get the same range (no matter how deep I'm)? Should I go on 14 meters, 30 meters or ?? meters depth? Greetz __________________

09-15-07, 03:37 PM	#4
Jimbuna Chief of the Boat Join Date: Feb 2006 Location: 250 metres below the surface Posts: 190,539 Downloads: 63 Uploads: 13	I think you get the same range regardless of your submerged depth :hmm: __________________ Wise men speak because they have something to say; Fools because they have to say something. Oh my God, not again!!

09-15-07, 05:03 PM	#7
BelegDraug Seaman Join Date: Aug 2007 Location: Buenos Aires, ARGENTINA Posts: 34 Downloads: 101 Uploads: 0	Well, in the "real-real" world ('cause for me, GWX is just like the "real" world), the distance of the hidrophone would change with the temperature and salt of water. This same principles and theorys are used today estimating the modern SONAR capabilities and other stuff.- __________________ Go and fight bravely, sons of Nemo!

09-15-07, 05:25 PM	#8
Heibges Sea Lord Join Date: Feb 2004 Location: San Francisco, California Posts: 1,633 Downloads: 1 Uploads: 0	The Uboat Commanders Handbook says it should be done at 20m travelling at Silent Running. Afterwards you should go up to PD, and have a look around. Finally, resurface at High Speed. __________________ U.Kdt.Hdb B. I. 28) This possibility of using the hydrophone to help in detecting surface ships should, however, be restricted to those cases where the submarine is unavoidably compelled to stay below the surface. http://www.hackworth.com/

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09-15-07, 02:35 PM	#2
froschman Watch Join Date: Dec 2006 Location: Röstånga, Sweden Posts: 30 Downloads: 0 Uploads: 0	I go to about 20 m depth, when trying to find ships outside the visual range. I have not made any detailed study, but my impression is that this works pretty well.

09-15-07, 03:08 PM	#3
Spruence M Sonar Guy Join Date: Apr 2007 Location: 14 Meters Posts: 394 Downloads: 29 Uploads: 0	Captian on Das Boot went to 25 meters.

09-15-07, 03:41 PM	#6
looney Commodore Join Date: May 2007 Location: Sneek, The Netherlands Posts: 635 Downloads: 43 Uploads: 0	I have read a book on a dutch sub wich did most of their under water stuf at 35m. So most likely each kaleun would have his own personal depth for it.