Recent Posts

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1
Hello Mr. Tore and All,


I corrected all the FBT 2 and FBT 4 drawings in Skizzenbuch to reflect the forward and aft fairings which are not part of the fuel/ballast tanks. The latest version of Skizzenbuch is in my Dropbox folder...


Regards,
Don_
2
Don. You are rigth the fairings of the MBT2 and 4are not a part of the sadletanks volume. They are only plates for streamlining the ends of the tanks. I cannot explain the floodgates on your image but having checked my files of VIICs and VIIC/41s there are no such floodgates. On the museum VIIC they have made a few slots at the bottom of the tanks with a dripnose, this was never on the original U 995 or KNM Kaura.
Tore
3
Hello Mr. Tore,


I have been updating the uhistoria.com drawing by labeling all the frames.  I noticed that FBT 2 and FBT 4 do not extend to the full end of the taper.


FBT 2 starts at a taper and extends to frame A24 and then the tank extends to D34
FBT 4 starts at D46 and then the tank extends to D62 and then the tapered area continues for a few frames
See my attached drawing...


It looks like the tapered ends are not part of the Fuel/Water Ballast system. I have a photo of what looks to be a late Type VII C, or Type VII C/41 where there seems to be 3 vent holes in the tapered area of FBT 2 at the bottom side of the tank. I have not see this on other Type VII U-Boats; was this modification documented anywhere?


See my attached photo...


Regards,
Don_
4
Don. I guess the emergency shut off vents for the MBT3 ventingducts are swinging inwards for open position. Further I would guess the venting valvediscs  are circular.
Tore
5
Hello Mr. Tore,


Do you know if the MBT 3 Emergency Shut-Off valve heads are round or rectangular like the Kingstons valves for the Saddle Tanks? The uhistoria.com drawing sort of looks like they may be rectangular, but I'm not sure after talking with Simon...


Regards,
Don_
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Hi Don.
I am in my car for a two days trip. My first impression is that your correction is OK. Reverting tomorrow. Tore
7
Hello Mr. Tore,


I have been reviewing Skizzenbuch and I made what I believe is a correction to the lower right drawing on page 350.  I had the "Emergency Shut-Off Valves" swinging outward. I believe the valve truss structure was designed for the valves to swing inward. Do you agree?


Regards,
Don_
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TYPE VII / Re: U-Boot im Focus #15 - out now
« Last post by Kuya@charter.net on 20 Sep , 2017, 06:07 »
A great series I have collected for since issue 1 ,
9
Hello Mr. Tore and All,


I found the location of a plate for access to the MBT 3 air shaft.  This was pointed out (fold-out schematic in the back of the book) in the U-Boat Archive Series Volume 7 – REPORT ON U-570 – H.M.S. GRAPH…

Regards,
Don_
10
Hi Don and Mark.
As mention many times before, the museum U 995 do not show the real U 995 and I can not remember the markings in question. I checked with the limited documentation I currently have access to and I guess the markings are related to the alteration to the hull, making the museums version. The markings were not on the hull at the arrival Kiel from Norway, the first time I noticed the markings was when the hull was placed on its concrete bed at Laboe and having access doors for the visitors. As to the Kingstons for MBT3 they are indeed rectangular, but welded shut for security reasons, as the fore free flood gates in the casing. It is possible to crawl into MBT 3 through the Kingstons, I have done it myself, and to climb on the casing side using the free flood gates as step holes ( which I have not done). My image below shows the story.
Tore
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