Author Topic: Alberich Tiles  (Read 5388 times)

0 Members and 1 Guest are viewing this topic.

Online VonStigler

  • Lieutenant (jg)
  • *
  • Posts: 74
Alberich Tiles
« on: 02 Aug , 2012, 21:06 »
Does anyone have any pics of any of the boats that were equipped with Alberich tiles?
Brian

Offline NZSnowman

  • Admiral4
  • *
  • Posts: 2,263
  • Gender: Male
  • U-1308
    • U-1308 - Wikipedia
Re: Alberich Tiles
« Reply #1 on: 03 Aug , 2012, 12:27 »
I have a few which I will try to post in the next few days.

Online VonStigler

  • Lieutenant (jg)
  • *
  • Posts: 74
Re: Alberich Tiles
« Reply #2 on: 03 Aug , 2012, 20:51 »
Thank you in advance!  I am planning on building U-480 with the tiles, should be an interesting project. 
Regards,
Brian

Offline SG

  • Admiral
  • *
  • Posts: 502
    • https://3xblackcats.wordpress.com/
Re: Alberich Tiles
« Reply #3 on: 05 Aug , 2012, 12:43 »
Hey Von Stigler!
U-1105, "the black panther": a few pics plus a close up shot of one of the Alberich tiles.
A few links too: http://www.ww2talk.com/forum/war-sea/21564-u-480-rubber-u-boat.html
http://shamazkhan.files.wordpress.com/2010/12/u480-return-norway-copy.jpg
http://www.u-boot-archiv-cuxhaven.de/lang1/u_480.html
and even this (just to add some extra ideas, a nice rendering on pages 7-8-9 of the thread, and there's also Simon's contribution!!):
http://www.subsim.com/radioroom/showthread.php?t=171478&page=2
Hope this helps, will search for more
Cheers!
SG
 
U-1105 and her crew (below)

 
the u-boot rigged with sensing devices by US navy personnel before her sinking

 
Dry dock pic showing U-1105's Alberich coating

 
Black Panther's conning tower insigna

 
Alberich "inner" (thus perforated) sheet salvaged from U-1105 conning tower. It was meant to be covered with an outer layer of non-perforated sheets

 
 
 
 
« Last Edit: 05 Aug , 2012, 13:12 by SG »

Offline NZSnowman

  • Admiral4
  • *
  • Posts: 2,263
  • Gender: Male
  • U-1308
    • U-1308 - Wikipedia
Re: Alberich Tiles
« Reply #4 on: 05 Aug , 2012, 14:19 »
The technology of anechoic tiles was developed by the Kriegsmarine in the World War II. Codenamed Alberich, it was named after the invisible sorcerer from Germanic Mythology. The coating was made up of sheets approximately 1,000 millimetres (3 ft 3 in) square and 4 millimetres (0.16 in) thick, with rows of holes in two sizes, 4 millimetres (0.16 in) and 2 millimetres (0.079 in) in diameter. It was manufactured by IG Farben from a material known as Oppanol. The material was not homogeneous but contained air cavities; it was these cavities that degraded the reflection of ASDIC. The coating worked in the 10 to 18 kHz range, reducing ASDIC return by about 15%. This frequency range matched the operating range of the early ASDIC active sonar used by the Allies. The ASDIC types 123, 123A, 144 and 145 all operated in the 14 to 22 kHz range. However, this degradation in echo reflection was not uniform at all diving depths due to the voids being compressed by the water pressure. An additional benefit of the coating was it acted as a sound dampener, containing the U-boat

Offline NZSnowman

  • Admiral4
  • *
  • Posts: 2,263
  • Gender: Male
  • U-1308
    • U-1308 - Wikipedia
Re: Alberich Tiles
« Reply #5 on: 05 Aug , 2012, 14:25 »






Online VonStigler

  • Lieutenant (jg)
  • *
  • Posts: 74
Re: Alberich Tiles
« Reply #6 on: 06 Aug , 2012, 05:00 »
Thanks so much for the excellant photos.  I am surprised at the placement over most of the flood holes, not what I expected at all.  SG---U-1105 is actually sunk off Piney Point Maryland and is now maintained by the historic shipwreck preserve.  I live about 150 miles from there, I wish I knew how to scuba dive.
Regards,
Brian

Offline wildspear

  • Silversides King
  • Commander
  • *
  • Posts: 294
  • Gender: Male
  • Grand Zebra
Re: Alberich Tiles
« Reply #7 on: 06 Aug , 2012, 07:19 »
Very good write up about the tiles. This is what makes this site great.....

Offline SG

  • Admiral
  • *
  • Posts: 502
    • https://3xblackcats.wordpress.com/
Re: Alberich Tiles
« Reply #8 on: 06 Aug , 2012, 09:54 »
Yep Brian, I knew already thanks to a book on  Uboat wrecks I've recently purchased. The dive on U1105 is not an easy one they say.. anyways go n get that Scuba licence, quick!!! ;D
A propos, if you need pictures of U1105 as it is today (plus a nice artwork of the wreck) just let me know and i'll happily send it via PP.
Speaking of wrecks, and following your decision to build U-480, enjoy this (and check out whats visible at 1:45):
http://www.youtube.com/watch?v=5OFQ9_CiLOI
Cheers and happy modelling the Alberich boat!
SG
 
PS you might also like this (but i sense u're already familiar w it):
http://www.youtube.com/watch?v=aJTNZwiMMiI&feature=related
« Last Edit: 06 Aug , 2012, 10:23 by SG »

Online VonStigler

  • Lieutenant (jg)
  • *
  • Posts: 74
Re: Alberich Tiles
« Reply #9 on: 09 Aug , 2012, 04:56 »
SG,
Thanks for the links.  I would be interested in seeing any still pics you have of the wreck. 
Regards,
Brian

Offline SG

  • Admiral
  • *
  • Posts: 502
    • https://3xblackcats.wordpress.com/
Re: Alberich Tiles
« Reply #10 on: 10 Aug , 2012, 12:03 »
Brian check ur PM inbox


Online VonStigler

  • Lieutenant (jg)
  • *
  • Posts: 74
Re: Alberich Tiles
« Reply #12 on: 14 Mar , 2017, 06:20 »
I am still trying to get going on the U-480 build. The few period photos I have been able to find of Alberich covered boats have me wondering, were the floods forward of the tower a different shape and size than those aft of the tower? Opinions welcome!
« Last Edit: 14 Mar , 2017, 06:23 by VonStigler »

Online VonStigler

  • Lieutenant (jg)
  • *
  • Posts: 74
Re: Alberich Tiles
« Reply #13 on: 14 Mar , 2017, 06:20 »
Aft

Online VonStigler

  • Lieutenant (jg)
  • *
  • Posts: 74
Re: Alberich Tiles
« Reply #14 on: 20 Mar , 2017, 15:07 »
Can anyone weigh in on this?