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TABARKA, i Relitti.

Iniziato da Francesco De Domenico , 29.07.2015 - 09:51
Tabarka Relitti Sommergibili Unità di Superficie Campo Minato Schnellboot Flotilla

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#16

Francesco De Domenico
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Jean-Pierre ha provvisoriamente identificato il sommergibile DESSIE' tra i relitti del Golfo di Tabarka, e ha comunicato la notizia all'ambasciatore d'Italia in Tunisia.


Messaggio modificato da Corto Maltese, 07 settembre 2015 - 09:01
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  • Inviato 27 agosto 2015 - 08:28

#17

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Ed ecco la mail inoltrataci da Jean Pierre con cui ci comunica questa importante notizia. La prudenza in questi casi è d'obbligo quindi non vi nascondo che attendo, con grande interesse, il rapporto che l'amico Misson redigerà dopo aver ispezionato il relitto.

 

 

"This is  to confirm that one of the many wrecks off Tabarka, Tunisia, is:

 
ITALIAN SUBMARINE DESSIE'
 
Position:   37°  04'  N         8°  52'  E (l'indicazione dei secondi è stata volontariamente omessa n.d.r.)
Depth ca.:  70 m
 
 
The attached picture shows a circular opening, larger than the drain holes, under the Gun Platform. It correlates with the large circular opening showing on the sonar image. This aperture seems to have only been on the hull of the 17 submarines of the  ADUA Class. No other submarines (of other Italian "Class" or of any other origin)  had such a large circular opening under the gun platform. All features and fittings on a submarine are symmetrical on Port and Starboard. With a good matching of the vintage picture against the sonar image and considering that submarine DESSIE' was operating in the area at the time she disappeared , it seems safe to assert the wreck is of this submarine. Diving the wreck is being planned".
 
Attachments:
 
Tabarka wrecks area:
 
Allega File  TABARKA Wrecks Area.jpg   82,83K   1 Numero di downloads
 
 
Sommergibile Dessié:
 
Allega File  DESSIE Submarine.jpg   44,41K   1 Numero di downloads Allega File  DESSIE Closeup of Aperture.jpg   100,24K   1 Numero di downloads
 
 
Dessiè 2G:
 
Allega File  SUB 2G DESSIE.png   971,97K   1 Numero di downloads
 
 
Circular shape side of gun:
 
Allega File  2G CIRCULAR SHAPE side of GUN.png   267K   0 Numero di downloads
 
 
Large Circular Aperture Platform:
 
Allega File  2G Large Circular Aperture Platform.jpg   103,52K   0 Numero di downloads
 

Messaggio modificato da Corto Maltese, 03 settembre 2015 - 13:00
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  • Inviato 27 agosto 2015 - 08:54

#18

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News of the day from Tabarka:
 
 
"Pic. 1  The wreck as  "shown"  by the sidescan sonar during the sweep in Otober 2014.
Pic. 2  Notes.
Pic. 3  The zone of search , where so many wrecks have been sonar-located. Only one wreck is shown on nautical chart Oceangrafix 52200.
Pic. 4  View of the coastline with the position of the area where the wrecks of 3 Submarines and of Destroyer HMS QUENTIN  have already been sonar-located. A CargoShip, an MTB  and several other wrecks have been located but not identified, yet. 
Pic. 5  Picture of the Italian submarine  RM  DESSIE'  presumed to be the wreck on Pic. 1. For the details leading to this assumption, see earlier mails.
Pic. 6  Table showing the different types of Italian submarines (from Storia Militare, n° 11 , 2013)            
Pic. 7  List of all 16 sisterships of RM Dessié (from Storia Militare) See Submarine RM Dessié on Internet for articles on the operations and the fate of this submarine. The sonar image Pic. 1  shows a submarine heavily listed to Port.
Heading ca.  40°. Depth ca.  70 m.  Flat seafloor. Probably  Sand / Mud. The snapshot does not show a good portion of the wreck due to the target being in what is called the "water column" (the corridor immediately under the sonar transducer): in this narrow corridor the sonar is blind. An additional  "side passage"  would be required to see the wreck in full. The sonar equipment used was TRITECH, Starfish 450. A better image could be obtained with a Starfish 452 or Starfish 900. The figures 450/452/900 relate to the frequency used. The higher the frequency, the better the "definition" of the image (but lower is the range !). The Gun is clearly visible. The bows are heavily damaged : this would indicate the vessel fell foul to a mine. As we now know, this area was a naval minefield, laid by the germans in 1942-1943. This is clear not only from the many wrecks but also from the remains of the mine-anchoring gear, still on the seafloor. Steel cables and chains, together with cube-shaped anchor blocks
can be seen on the sonar recordings, in large number and at regular interval.
Pic. 8  The submarine which has been identified as British U Class (no Name / Pennant Number, yet).
Pic. 9  A third submarine, yet to be identified. At first glance this one would also be Italian because of the Hydroplanes, still in the upturned position: the tips are parallel to the level of the deck. On british submarines, of any Class WWII, the tips of the Hydroplanes were triangular and protruded somewhat above deck level: Pic. 10
 
Attachments:
 
1) Allega File  Scanline20150827_104634.png   1,14MB   0 Numero di downloads
2) Allega File  2G SONAR VIEW NOTES.jpg   177,59K   0 Numero di downloads
3) Allega File  TABARKA Wrecks Area.jpg   82,83K   0 Numero di downloads
4) Allega File  TABARKA FROM NORTH.jpg   72,4K   0 Numero di downloads
5) Allega File  DESSIE Submarine.jpg   44,41K   0 Numero di downloads
6) Allega File  ITALIAN SUBMARINES WWII Class & Series.jpg   114,05K   0 Numero di downloads
7) Allega File  ITALIAN SUBMARINES LIST SERIE ADUA.jpg   176,26K   0 Numero di downloads
8) Allega File  SUB 2015.jpg   92,26K   0 Numero di downloads
9) Allega File  2F SUB.jpg   154,58K   0 Numero di downloads
10) Allega File  U CLASS Layout.jpg   101,01K   0 Numero di downloads
 
Jean Pierre Misson, Tabarka, Tunisia. August 27, 2015".
 
 

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  • Inviato 28 agosto 2015 - 16:25

#19

Naumachos
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Questo si che è un 3d interessante ! Finalmente riesco a leggerlo,gran lavoro davvero,il tutto a profondità assolutamente fattibili anche respirando aria.
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  • Inviato 02 settembre 2015 - 12:07

#20

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"Irrespective of the name that will eventually be found for this submarine, this vessel is definitely of Italian design: the CLASSE 600.
A preliminary correlation exercise has been done, using the vintage picture of RM Dessié: the matching is conclusive. To differentiate this wreck from the many other wrecks in the area, it has been identified as 2G: Sonar Search 2 (October 2014), the Seventh Wreck (A-Z). When judgeing the validity of this study it is essential to keep in mind two important points:

  1. The sonar snapshots, printed out from a sonar recording are nowhere near as sharp as what can be seen on the display of the computer playingback the recording. However meticulous is the adjustment of the sonar's software (Gain,Contrast,Range,Colour), the Printout will never be as good as the display on the computer...;
  2. The sonar images are of vessels that have been on the bottom of the sea for about three quarters of a century: the metal has been severely eaten away. In the particular case of submarines, the body was a combination of a (thick) metal plating for the Pressure Hull and a (thinner) metal plating for the Outer Casing and Conning Tower. What we now see on the sonar image is in no way what can be seen on pictures or what can be found on the drawings. In fact the sonar image only shows what remains of the thick and solid parts of the structure, after the thin parts have disappeared due to rusting and decay over time. For this reason, the deciphering of sonar images can be rather difficult, at times. In all cases: it requires a lot of Time to patiently view the images and it also needs repeated, playback sessions, at intervals. A fresh mind can see things that were totally missed in earlier viewings.

Jean Pierre Misson, Tabarka, Tunisia. September 5, 2015".

 

Attachments:

 

 

Dessié Large Drain Hole:

 

Allega File  1 DESSIE' Large Drain Hole.jpg   47,24K   0 Numero di downloads

 

 

2G Bows damage:
 

Allega File  2 - 2G BOWs DAMAGE.jpg   157,03K   1 Numero di downloads

 

 

2G The Larger Drain Hole:
 

Allega File  3 - 2G The Larger Drain Hole.jpg   103,52K   0 Numero di downloads

 

 

Dessié Correlation:
 

Allega File  4 - DESSIE' Correlation.jpg   163,11K   0 Numero di downloads

 

 

600 Class Drawings:
 

Allega File  5 - ARGONAUTA Drawings.jpg   216,85K   0 Numero di downloads


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  • Inviato 07 settembre 2015 - 09:15

#21

Long John Silver
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Pubblico per conto del nostro socio Jean-Pierre Misson:

 

E' stato localizzato (solo dal sonar) fra altri nuovi relitti : un sommergibile Italiano.

 

Position   :      37°  04'  41"  N        8°  52'  31"  E

 

Questo è stato Domenica 13 Settembre : il secondo sweep di quest'anno e non è completata la ricerca...

Ci saranno sicuramente altri ritrovamenti.
In allegato l'immagine della parte posteriore dello scafo con le due cupole dietro la torretta.

 

Allega File  ITALIAN SUB SONAR 13 SEPT 2015.png   783,44K   0 Numero di downloads

 

e una Correlazione con un disegno costruttivo della Classe 600 (Storia Militare , n° 11 , pagina 10))

 

Allega File  ITALIAN SUB 13 09 15 CORRELATION.jpg   173,92K   1 Numero di downloads

 

Il design è tipico dei soli sommergibili Italiani. Pic.3 , Pic. 4  (Storia Militare , pagina  49)

 

Allega File  ITALIAN SUBs Domes Aft.jpg   155,64K   0 Numero di downloads

 

Allega File  ITALIAN SUBs Silhouette Domes.jpg   46,14K   0 Numero di downloads

 

Con le foto d'epoca e  i disegni costruttivi si tenterà di  identificare / proporre un nome per questo sommergibile.

 

JPM

Note :

There are two other submarines not fully identified yet , but probably Italian too. These are shown on  Pic. 5 and Pic. 6

 

Allega File  SUB 2G.png   971,97K   0 Numero di downloads

 

Allega File  SUB 2F.png   691,83K   0 Numero di downloads

Another two submarines are decisively British because of their short Outer Casing , Aft.

 

Allega File  SONAR 13 09 15 520 2Y Maybe S CLASS.png   245,94K   0 Numero di downloads

 

]Allega File  SUB 3T JUL 2015.png   331,63K   0 Numero di downloads

This brings the total of wrecks identified as "submarine" to five , in the area. Pic. 9

 

Allega File  TABARKA Wrecks Area.jpg   82,83K   0 Numero di downloads

 

Diving these wrecks is a challenge because of the depth.

 


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  • Inviato 17 settembre 2015 - 14:05

#22

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Pubblico una mail appena arrivata dal nostro socio JP Misson in missione a Tabarka.

 

For information only .

 

Four Sidescan Sonar searches have been conducted off Tabarka , Tunisia : in September and October 2014 and in July and September 2015.

To this date , the recordings have revealed the wrecks of several submarines from WWII:
The loss of these submarines is due to naval mines : the bows of all vessels are severely damaged.

 

Allega File  SUB 2F.png   691,83K   0 Numero di downloads

Sonar Image of submarine 2F 37° 04' 32"  N 8° 52' 34" E

 

Allega File  SUB 2G.png   971,97K   0 Numero di downloads

Sonar Image of submarine 2G (37° 04' 45" N 8° 52' 35" E  (presumed Italian)

 

Allega File  SUB 3T JUL 2015.png   331,63K   0 Numero di downloads

Sonar Image of submarine 3T     37° 04' 31" N       8° 52' 34" E  (presumed British)

 

Allega File  SUB 4Oscar.png   514,42K   0 Numero di downloads

Sonar Image of submarine 40     37° 04' 36" N       8° 52' 35" E  (presumed British)

 

Allega File  SUB 4V.png   254,05K   0 Numero di downloads

Sonar Image of submarine 4V    37° 04'  44" N       8° 52' 32" E

 

Allega File  SUB 4B'.png   254,17K   1 Numero di downloads

Sonar Image of submarine 4B'    37° 04' 41" N        8° 52' 31" E  (confirmed Italian)

 

All these wrecks are at a depth rangeing from  72 m  to   77 m.

 

Allega File  TABARKA Wrecks Area.jpg   82,83K   0 Numero di downloads

While waiting for the day when a visual approach will be possible , efforts will be made to obtain better Sonar Images and possibly some Photographs using a Drop CCTV Camera. 

Note : The wrecks have been temporarily identified as   2F , 3T , 4V  etc. The Prefix is the Search Number , the Suffix is the position of the wreck (A-Z) during the search.
Wreck 2G was located during Search 2 and is the 7th wreck appearing on the recording.
The list will not prove to be (possibly) wrong on more than one count.

 


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  • Inviato 23 settembre 2015 - 14:24

#23

Naumachos
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Lo so che è pura fantasia,ma per fare questi relitti sono disposto a scendere via mare a Tabarka da Genova,peccato ci siano problemi burocratici per le immersioni senza diving.
Comunque un gran lavoro che meriterebbe di essere completato con una documentazione tramite video e foto,bravo Misson.
  • Long John Silver piace questo
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  • Inviato 25 settembre 2015 - 17:52

#24

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Riporto in calce al presente post una mail inoltrataci, il 25.09.2015, dal socio Jean Pierre Misson: 
 
"Four Sidescan Sonar searches have been conducted off Tabarka, Tunisia: in September and October 2014 and in July and September 2015. Among other wrecks, the recordings have revealed several submarines. The loss of these submarines is due to naval mines, WWII: the bows of all vessels are severely damaged. The position of the minefield and of most wrecks is shown on Pic. 8:
 
Pic. 1  Sonar Image of submarine 2F     37° 04' 32"  N      8° 52' 34"  E:
 
Allega File  SUB 2F.png   691,83K   0 Numero di downloads
 
Pic. 2  Sonar Image of submarine 2G    37° 04'  N      8° 52'  E  (presumed Italian) [1]:
 
Allega File  SUB 2G.png   971,97K   0 Numero di downloads
 
Pic. 3  Sonar Image of submarine 3T     37° 04' 31" N       8° 52' 34" E  (presumed British):
 
Allega File  SUB 3T JUL 2015.png   331,63K   0 Numero di downloads
 
Pic. 4  Sonar Image of submarine 40     37° 04' 36" N       8° 52' 35" E  (presumed British):
 
Allega File  SUB 4Oscar.png   514,42K   0 Numero di downloads
 
Pic. 5  Sonar Image of submarine 4V    37° 04'  44" N       8° 52' 32" E:
 
Allega File  SUB 4V.png   254,05K   0 Numero di downloads
 
Pic. 6  Sonar Image of submarine 4B'    37° 04' N       8° 52'  E  (confirmed Italian) [1]:
 
Allega File  SUB 4B'.png   254,17K   0 Numero di downloads
 
Rev. 24-9: Addendum: Pic. 7  Sonar Image of submarine 4M'   37° 04' N       8° 52'  E  (confirmed Italian)[1]:
 
Allega File  ITALIAN SUB 4M'.png   516,08K   0 Numero di downloads
 
Pic. 8
 
Allega File  TABARKA Wrecks Area.jpg   82,83K   0 Numero di downloads
 
All these wrecks are at a depth rangeing from  72 m  to   77 m. While waiting for the day when a visual approach will be possible, efforts will be made to obtain better Sonar Images and possibly some Photographs using a Drop CCTV Camera.  
 
Note : The wrecks have been temporarily identified as   2F , 3T , 4V  etc. The Prefix is the Search Number, the Suffix is the position of the wreck (A-Z) during the progression of the search. Wreck 2G was located during Search 2 and is the 7th wreck appearing on the recording. The list should not prove to be (possibly) wrong on more than one count. To date, only one surface vessel has been identified from her sonar image: this is HMS QUENTIN, now resting in position 37° 04' 44"  N  8° 52' 33"  E. Putting a name on each wreck will require much time and effort".

 

[1] I secondi sono stati volontariamente omessi.
 


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  • Inviato 26 settembre 2015 - 10:09

#25

Corto Maltese
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Jean Pierre Misson ci ha inoltrato questa mail da Tabarka il 28.09.2015:
 
"This is to confirm that recent sidescan sonar searches have revealed an exceptional concentration of wrecks off Tabarka, Tunisia. The evidence is on the recordings of these sweeps.  Aside from the wreck of Destroyer HMS Quentin, there are many more wrecks of all kinds of surface vessels. Of particular importance (because they still hold their entire crews) are seven submarines. Three of them have been recognised as being of Italian construction and another three are presumed British. All these wrecks show damaged bows and steel cables, chains and anchors blocks can be seen on the sonar recordings. The place has been a naval minefield installed by a German Schnellboot Flotilla, based in Bizerte from December 1942 to May 1943.
 
Pictures: 
 
Pic.1  The area with many wrecks: the position of the minefield WWII.
 
Allega File  TABARKA Wrecks Area.jpg   82,83K   0 Numero di downloads
 
Pic.2  Naval mines moored at a depth to obstruct passage of submarine:  
 
Allega File  MINES ANTI SUBMARINE.png   28,05K   0 Numero di downloads
 
Pic.3  An Italian submarine, identified from Domes on the deck:
 
Allega File  ITALIAN SUB 4B'.png   254,17K   0 Numero di downloads
 
Pic.4  A British submarine, identified from a short Casing, aft:
 
Allega File  SUB 2015 JULY 3T.jpg   92,26K   0 Numero di downloads  
 
It is believed there is no similar place in the Mediterranean with such a number of submarines, all lying in a very limited perimeter. The only but great difficulty is the depth: in the range  72 - 77 m. Scuba Diving in Tunisia is strictly regulated: no diving outside of a Dive Club and no Club will allow a dive beyond 40 m. Therefore, some other solution is to be found to visually approach these wreck".
 

  • sandokan piace questo
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  • Inviato 29 settembre 2015 - 22:52

#26

Corto Maltese
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Abbiamo ricevuto in data 29.09.2015 la seguente mail di Jean Pierre:

 

 

"A summary of data for the seven wrecks identified as "Submarine", as at 29/9/2015. Sonar images in earlier posts, depth: 70 - 77 m".
 

T A B A R K A



Submarine 2F  37° 04' 32" N 8° 52' 34" E

Submarine 2G  37° 04' --" N 8° 52' --" E (presumed Italian)[1]

Submarine 3T  37° 04' 31" N 8° 52' 34" E (presumed British)

Submarine 40  37° 04' 36" N 8° 52' 35" E (presumed British)

Submarine 4V  37° 04' 44" N 8° 52' 32" E

Submarine 4B' 37° 04' --" N 8° 52' --" E (confirmed Italian)[1]

Submarine 4M' 37° 04' --" N 8° 52' --" E (confirmed Italian)[1]

Allega File  TABARKA Wrecks Area.jpg   82,83K   0 Numero di downloadsAllega File  TABARKA FROM NORTH.jpg   72,4K   0 Numero di downloadsAllega File  TABARKA POSITION 7 SUBMARINES.jpg   74,55K   0 Numero di downloadsAllega File  TABARKA POSITION 7 SUBMARINES Zoom.jpg   24,76K   0 Numero di downloadsAllega File  TABARKA BONE BIZERTE LA GALITE.jpg   90,23K   0 Numero di downloads

[1] I secondi sono stati volontariamente omessi.


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  • Inviato 29 settembre 2015 - 23:07

#27

Long John Silver
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Inoltro per conto del nostro socio JP Misson:

Italian Submarines : the typical DOMES on Deck

From 7:08 to 7:10

https://www.youtube....h?v=Bem-_t6Q_2o

Allega File  ITALIAN Sub Domes Aft Deck , Sonar.png   801,35K   0 Numero di downloads

Allega File  ITALIAN SUB Dome Fore Deck.jpg   69,16K   0 Numero di downloads
  • sandokan piace questo
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  • Inviato 02 ottobre 2015 - 08:25

#28

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Pubblichiamo un aggiornamento del nostro socio JP Misson a Tabarka:

 

TABARKA Wreck 2G Confirmed Italian

 

For infomation only.

 

Earlier Posts (of this thread NDR) hinted at the possibility for this wreck to be the Italian submarine RM Dessié .
This was only based on a larger-than-normal Drain Hole seen on the sonar image and on vintage pictures of this submarine (and of no other , except possibly RM Adua)
One more detail confirms this is an Italian submarine:
The sonar image shows a Dome on the Fore Deck , between the Gun and the Hydroplanes.

 

Domes on the decks (Fore and Aft) were a feature specific to submarines of Italian construction (WWII era) Wreck 2G  is an Italian submarine.
This reinforces the case for this wreck to be RM Dessié.

 

http://www.xmasgrups...ili/Dessie.html

 

http://www.wrecksite...eck.aspx?142208

 

 

The Dessié is said to have been lost to an attack by HMS Quentin and HMAS Quiberon, off BONE (today ANNABA) on December 2nd , 1942.
The Allies had already landed in nearby Algeria and Annaba is just a few miles from Tabarka.
The nearest Italian base was Bizerta and had RM Dessié been only hurt and had wanted to take refuge there: she would have hugged the shore.
The wreck shows severe damage to the bows but it remains to be seen if this is due to hitting a mine or to some other type of damage damage suffered during the attack by the British destroyers off BONE (Annaba).

There seems to be some questions about the date when naval mines were first laid a few miles East of Tabarka. It could be that naval mines were planted in that zone earlier than December 16 , 1942 when the first sorties of German E boats out of Bizerta are reported in naval archives and in books...

If it were confirmed that the wreck of this Italian submarine (2G) is indeed RM Dessié ...then a remarkable coincidence would come to light : HMS Quentin (the Destroyer that attacked RM Dessié off BONE (Annaba) on December 2, 1942 ) ....came to rest on the seabed about one hundred meters from her , exactly one year later:  on December 2  1943!

 

The wreck of HMS Quentin (last picture) is in position    37°  04'  44"  N     8°  52'  33"  E

http://www.aidmen.it...lfo-di-tabarka/

 

Allega File(s)


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  • Inviato 08 ottobre 2015 - 11:29

#29

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Inoltro dal nostro socio JP Misson:

 

TABARKA Wreck 5P is an Italian Submarine

 

The sonar search on October 6 has revealed yet another wreck of a submarine in the area off Tabarka , where a german naval minefield had been planted  Dec.42 - May 43.

The attached Pictures 1 and 2 are the sonar images of this wreck. They are complementary to one another.
Picture 1 is the Fore end , while Picture 2 is the Aft portion of the vessel.

 

Allega File  WRECK 5P 1 of 2.png   652,93K   0 Numero di downloads

 

Allega File  WRECK 5P 2 of 2.png   653,66K   0 Numero di downloads

 

The submarine is slightly listed to Port but is otherwise on an even keel. The bows look damaged or altogether missing , the result of hitting a mine.

The submarine is Italian for the following reasons :

-The Anchor (stockless type) is seen on the Port side of the hull (Pic. 3) : this was standard for all the   Italian units of the "Classe 600". (Very few Italian submarines had the anchor on the Starboard side: these were of some other "Classe" :  Settembrini , Mameli , Argo).
Most British submarines operating in the area were of the U Class:  the anchor was on the Starboard side.

 

This wreck is in position: 37° 04' 47" N  8° 52' 36" E
Depth circa 70 - 75 m

 

Allega File  WRECK 5P The Anchor.png   813,11K   0 Numero di downloads

 

-Some Domes can be seen on the Aft deck (Pics. 2 , 6) :  this is a very specific Italian design : no other submarines of any other origin had such Domes.

 

Allega File  WRECK 5P Domes , Aft.png   832,29K   0 Numero di downloads

 

Allega File  WRECK 5P Gun and CT.png   853,58K   0 Numero di downloads

 

Allega File  WRECK 5P Hatch and Gun.png   844,76K   0 Numero di downloads

 

Allega File  TABARKA Wrecks Area.jpg   82,83K   0 Numero di downloads

 

5P is the fourth submarine , found in this area , to be confirmed Italian : the other three are : 2G , 4B' , 4M'.

They all lie within the perimeter shown on Pic. 7.

 

5P indicates the wreck is on Sonar Recording 5 (Oct. 6 , 2015) and shows as the 16 th Target (A-Z).
The Sonar Recordings are numbered

 

  1. September 2014
  2. October 2014
  3. July 2015
  4. September 2015
  5. October 2015

 

 

 


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  • Inviato 10 ottobre 2015 - 23:00

#30

Long John Silver
  • Long John Silver
  • AIDMEN Fellows
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  • LocationW il Papa Re

Inoltro da parte del socio JP MIsson:

 

OUTLET for BILGE PUMPS on Submarines

 

 

For information only.

For some time the Large Circular Apertures seen on vintage pictures of submarines (whether Italian or British) had remained a question mark.
Many  pictures show one , sometimes  two , odd  openings on the side of the hulls. These apertures are generally not aligned with the row(s) of drain apertures on the casing. An illustration of such "special" apertures is on the attached Pic. 1 (Italian submarine  RM DESSIE') and Pic. 2 (British submarine HMS AFFRAY , courtesy P. Hulme). 
The apertures are positioned in the Fore and the Aft portions of the craft. They are for the Outlet of the Bilge Pump(s) and are believed to be duplicated : Port and Starboard. This finding is the result of a research that started when a larger-than-normal circular aperture was noticed on the sonar image of wreck 2G , off Tabarka. Pic. 3 , 4.

 

It led to believe that the wreck is of Italian submarine RM DESSIE' as the only vintage picture showing such a larger-than-normal circular aperture , in that precise position , is a picture of the DESSIE' !

Plans are being made to dive the wreck in the summer of 2016. Although the bows look damaged it is hoped the name , in raised letters , will be found.
A few letters of it would suffice.

Note :
When not apparent as a distinct aperture in the casing , the outlet of a  Bilge Pump is simply taking advantage of an existing standard Drain Aperture as shown on Pic. 5 (RM UARSCIEK , courtesy E. Bagnasco)

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  • Inviato 12 ottobre 2015 - 08:10





Anche taggato con Tabarka, Relitti, Sommergibili, Unità di Superficie, Campo Minato, Schnellboot Flotilla

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