Sea mines

Discussions on all (non-biographical) aspects of the Kriegsmarine except those dealing with the U-Boat forces.
Conshelf
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Re: Sea mines

Post by Conshelf » 21 Feb 2017 20:46

[quote="MarcinR"]I took this photo of sea mine in Museo Storico Navale in Venice. Any thoughts about what model is it?

Hi MarcinR, I believe it is a German WWI EMA or EMB they were also known as C/12, they were deployed by type UC submarines, there are two more on display one at the Laboe Naval Memorial and one at the Imperial War Museum London. The one you have photographed has gear teeth on two of the uprights which the other two do not.

UC-5 was refloated and put on disply with with a couple of these on the hull.

Hope this helps

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Natter
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Re: Sea mines

Post by Natter » 03 Mar 2017 22:21

Conshelf wrote:Unfortunately, my copy is of rather poor quality. Here is an image of the complete system:
FYI: I was just looking through some photos I got a while back from a british contact of mine. They are from the Danish Navy EOD-collection, which includes a complete SMA-system.
The photos are not mine to share, but if you give me your e-mail adress in a PM, I can put you in contact with the owner.

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bettika
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Re: Sea mines

Post by bettika » 01 Nov 2017 23:34

Natter wrote:
LIZ = Lichtzündgerät (light-operated (photo-electric) fuze)
This was used by KdK against the bridges of Nimwegen.
"TMB mine with water balloon
Mines with buoyancy chambers and towed by swimmers. The charge was 1,220 lb.; two mines might be linked together to double the charge. Fitted either with time fuse up to six days, or photo-electric cell firing."
The TMB were stored in "Sperrwaffenarsenal Trappenkamp".

Are there any informations, about experience whith LIZ in Torpedoes?

Brgd
Beate

IgorVB
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Re: Sea mines

Post by IgorVB » 23 Nov 2017 15:30

Hi, Natter!

I have a new question on the German sea mines. On German diagrams, next to the name of the type of mine, written color. View schema fragment for viewtopic.php?f=49&t=222989/
Color is only near the mines LMB III. There is "green", "blue", "red", "yellow" and "green-blue" colors. There is speculation that the color is associated with the direction of the magnetic field. But part LMB III had an acoustic Fuze, and all the mines BM-1000 was equipped with a magnetic Fuse. Near the names of BM-1000 colors no. What is the meaning of these colors?

Best regards, Igor

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Natter
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Re: Sea mines

Post by Natter » 01 Dec 2017 23:34

bettika wrote:Are there any informations, about experience whith LIZ in Torpedoes?
There were several optical torpedopistols in development, but none ever fielded. From the top of my head, you have the Pi-S, the Pi-O and "Leuchtfisch" (I have some limited info on this, but not at hand and I'm not able to look for it at the time being).

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bettika
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Re: Sea mines

Post by bettika » 05 Dec 2017 11:40

From the top of my head, you have the Pi-S, the Pi-O and "Leuchtfisch"
more informations could be inside https://catalog.archives.gov/id/4346374
Technical Report Number 329-45 [German Optical Pistols Pi-S, Pi-O and "Leuchtfisch"]
but its out of this thread called "Sea Mines" :D

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Natter
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Re: Sea mines

Post by Natter » 05 Dec 2017 12:13

bettika wrote:
From the top of my head, you have the Pi-S, the Pi-O and "Leuchtfisch"
more informations could be inside https://catalog.archives.gov/id/4346374
Yes, that's on my list of reports in relevance to german development of optical pistols:

NARA
Letter Report Number 208-45 [Pi-0 Optical Torpedo Pistol]
Technical Report Number 329-45 [German Optical Pistols Pi-S, Pi-O and "Leuchtfisch"]


TNA
Reports on experiments at Toulon with optical pistol Pi-0
Optical pistol and light transmission: investigation of optical conditions at sea


WW2 optical pistols are not mentioned in Bundesmarine's history of torpedopistols, so I think they were far from being close to operational (hardly on prototype-status). They picked up the development with the optical pistol "Mücke" pistol in the 1960's, but this went no way as well.

IgorVB
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Re: Sea mines

Post by IgorVB » 18 Dec 2017 11:45

Hi,
I found that:
Type "blue": LMB with regular polarity magnetic firing device.
Type "red": LMB with reversed polarity magnetic firing device.
Type "green": LMB with acoustic firing device; has stripping prevention Equipment (GE) and period delay mechanism (Z.K.).
But I don't know what fuses and devices are in "yellow" LMB-III, and why BM-1000 is not color-coded?
Brgd, Igor

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von thoma
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Re: Sea mines

Post by von thoma » 24 Dec 2017 06:43

Is this a sea mine, or a fishing device ?
Thank you.
1940-50.jpg
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Sturm78
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Re: Sea mines

Post by Sturm78 » 04 Jan 2018 15:01

Hi von thoma,

I would say sea mine....

Here, another image from Ebay: EMC ???

Sturm78
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Sturm78
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Re: Sea mines

Post by Sturm78 » 05 Feb 2018 20:50

Nobody ??

Well, here another image from Ebay: I would say EMC mines...

Sturm78
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Natter
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Re: Sea mines

Post by Natter » 04 Mar 2018 12:57

von thoma wrote:Is this a sea mine, or a fishing device ?
Probably a french moored contact mine (Vickers-Brequet). Originally a british development of an Italian mine ("Elia").

It was introduced during WW1, but further developed after the war - like the "B3" variant in 1924. I have no idea what version this is though, as older minesystems (from around 1900) were used both during and post WW2.
In theory it could have been a mine from a WW1 minefield drifted ashore, but it doesn't appear to have been submerged that long.
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Natter
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Re: Sea mines

Post by Natter » 04 Mar 2018 13:08

Sturm78 wrote:Here, another image from Ebay: EMC ???
Sturm78 wrote:Well, here another image from Ebay: I would say EMC mines...
I agree (not sure about the variant

Sturm78
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Re: Sea mines

Post by Sturm78 » 04 Mar 2018 19:50

Thanks, Natter

Regards Sturm78

Sturm78
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Re: Sea mines

Post by Sturm78 » 11 Mar 2018 21:40

Hi all,

Can someone identify this sea mine ?

Image from Ebay
Sturm78
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