Mystery Ship Component

Letum · 08-12-09, 05:53 AM

Above is a section from a drawing of the aft of a WW2 German Minesweeper.

Can anyone identify the strange component with the prongs?
You can see them from the plan view here:
http://www.dreadnoughtproject.org/pl...lan_100dpi.jpg

What are they and how are they used?
Thanks.

Tchocky · 08-12-09, 05:56 AM

Looks like a Voith Schneider propeller to me. Highly maneuvrable propulsion device, useful in the "HOLY SH*T STOP RIGHT NOW" world of minesweeping.

http://en.wikipedia.org/wiki/Voith-Schneider

Edit - Hang on a minute, does that picture show them to be above or below the waterline? And they're a bit canted...

I wonder.

Raptor1 · 08-12-09, 05:58 AM

Ugh, beat me to it!

Letum · 08-12-09, 05:58 AM

Ahh! Thankyou!

Raptor1 · 08-12-09, 06:01 AM

Quote:

Originally Posted by Tchocky

Edit - Hang on a minute, does that picture show them to be above or below the waterline? And they're a bit canted...

I wonder.

Definitely below the waterline. The blueprints don't show the waterline.

Also it seems to have 2 of them from the blueprints on the Dreadnought Project.

Letum · 08-12-09, 06:01 AM

Quote:

Originally Posted by Tchocky

Edit - Hang on a minute, does that picture show them to be above or below the waterline? And they're a bit canted...

Just below.
It also explains the lack of propeller and rudder on the diagram.
ed: and the drive shafts going to them!

Tchocky · 08-12-09, 06:04 AM

You're right, guys. In the plan view you can see the engine shafts going to each thruster. (edit - beaten to it!)

I didn't know that this kind of technology was in use back then. Respect Kriegsmarine +1

Syxx_Killer · 08-12-09, 07:59 AM

I remember Robert Ballard mentioned those in his book The Discovery of the Titanic. His research ship had two of them. They worked great to keep the vessel in place while they dropped the ROVs and stuff. In the book they called those things egg beaters.

08-12-09, 05:53 AM	#1
Letum Navy Seal Join Date: Feb 2005 Location: York - UK Posts: 6,079 Downloads: 43 Uploads: 0	Mystery Ship Component Above is a section from a drawing of the aft of a WW2 German Minesweeper. Can anyone identify the strange component with the prongs? You can see them from the plan view here: http://www.dreadnoughtproject.org/pl...lan_100dpi.jpg What are they and how are they used? Thanks. __________________

08-12-09, 05:56 AM	#2
Tchocky Navy Seal Join Date: Jul 2004 Posts: 5,874 Downloads: 6 Uploads: 0	Looks like a Voith Schneider propeller to me. Highly maneuvrable propulsion device, useful in the "HOLY SH*T STOP RIGHT NOW" world of minesweeping. http://en.wikipedia.org/wiki/Voith-Schneider Edit - Hang on a minute, does that picture show them to be above or below the waterline? And they're a bit canted... I wonder. __________________ [SIGPIC][/SIGPIC]

08-12-09, 05:58 AM	#3
Raptor1 Navy Seal Join Date: Jul 2007 Location: Stavka Posts: 8,211 Downloads: 13 Uploads: 0	Ugh, beat me to it! __________________ Current Eastern Front status: Probable Victory

08-12-09, 05:58 AM	#4
Letum Navy Seal Join Date: Feb 2005 Location: York - UK Posts: 6,079 Downloads: 43 Uploads: 0	Ahh! Thankyou! __________________

08-12-09, 06:04 AM	#7
Tchocky Navy Seal Join Date: Jul 2004 Posts: 5,874 Downloads: 6 Uploads: 0	You're right, guys. In the plan view you can see the engine shafts going to each thruster. (edit - beaten to it!) I didn't know that this kind of technology was in use back then. Respect Kriegsmarine +1 __________________ [SIGPIC][/SIGPIC]

08-12-09, 07:59 AM	#8
Syxx_Killer Admiral Join Date: Aug 2003 Location: Michigan, USA Posts: 2,387 Downloads: 21 Uploads: 0	I remember Robert Ballard mentioned those in his book The Discovery of the Titanic. His research ship had two of them. They worked great to keep the vessel in place while they dropped the ROVs and stuff. In the book they called those things egg beaters.