Assembly & Building Hatches Here my drawing of the Assembly & Building Hatches Fig. 1. Step 1: Pressure Hull. Fig. 2. Step 2: Pressure hull with Assembly and Building hatches. Fig. 3. Step 3: Assembly opening, building hatch, Exhaust piping & Ventilation piping.
Forum: Technology and Operations

I have see the values for capacity, pressure etc... for the compressed air bottles but I have not see the dimensions of them. Does anyone know there dimensions? Thanks, Simon.
Forum: Technology and Operations

Hi Don I was thinking that same thing all day today, about the different versions of the Type VII's. It's good to hear it from another Thanks
Forum: Technology and Operations

Hi All I have two plans that illustrate the aft Battery Hatch, but they are both in different location Does anyone know the correct location for the aft Battery Hatch? Fig. 1. Battery Hatch location between frame number 41 and 42. Fig. 2. Battery Hatch location between frame number 44 and 45. Thanks, Simon
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Found a picture of the Stern Driving Tank vent
Forum: Modeling and schematics

Found the answer to the marking - Voigt & Haeffner A. G.
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Hi All I was wondering if anyone has any pictures or information on the exhaust silencer? Thanks, Simon
Forum: Technology and Operations

Gdcran, you have PM. Simon
Forum: Modeling and schematics

I got a new U-boat book this morning 'Wolfpack - U-Boat at War 1939-1945' by P. Kaplan & J. Currie. Inside I found this picture It is great to found a pictures of the rivets, you can see them clearly along the side of this U-Boat
Forum: Technology and Operations

Now if I think about it a little more, you would not use only three rivets. You would use either 2 or 4 rivets (like below)
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Hi Scott I noted the you said this information was for IXC, IXC40, IXD2, XB, and XXI. U-995 is a Type VIIC/41. Would this be a reason why the three rivets? Simon
Forum: Technology and Operations

Scott Sorenson Wrote: ------------------------------------------------------- > Part II > > - The patch in the engine room has double butt > strips, double riveted, on the plating. Frames are > butted, with double butt strips on the web having > 6 rivets on each side. Fifth - The battery patch > consists merely of a plate riveted to a frame > about 1.5 inch thick
Forum: Technology and Operations

Hi Ben I believe all Type VIIC/41 had there 88mm gun remove. The bow was 130 mm longer and a little higher about 100 mm. I am working on drawing of a Type VIIC/41 for the last two years now. You can see some of my drawing at If you have any more question sent me PM Simon
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Does anyone know of any cases that they replace the the Diesel motor from a Type VII's? If they did, it much had been a huge job, removing the decking, cutting the pressure etc...
Forum: General Discussions

Now I remember where I saw the document it was the Design and Specification Books, Volume M from U-570 but I wonder of this is for only document
Forum: Modeling and schematics

I remember reading somewhere that the piping within the U-boats (or maybe it was only U-995) was colour coded, but I can not remember if it was the German that did it or the Royal Norwegian Navy. Does anyone know? Thanks, Simon
Forum: Modeling and schematics

Does anyone know the diameter of the two pipes (red & green) for the air trunking? Thanks, Simon.
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Does anyone have any good pictures of the torpedo from U-505, that they would like to share so I can draw the inside of a torpedo? Thanks, Simon.
Forum: Modeling and schematics

Sorry, mean to say U-995
Forum: General Discussions

Hi All I have been keen U-boat person for many years now I live in New Zealand, a long way from the home of the U-Boats. I workout a few weeks back that I live over 18,500 km from U-955 Over the years I have noted a few other kiwi’s that are also intense in U-boats. I was just wondering how many of as are out there. If you a like U-Boat and are a kiwi or living in New Zealand, say hello
Forum: General Discussions

Thanks Ã…kerberg My German friend also just toll me this last night. I did not get to ask her more questions before her had to take off. I try searching the net about medieval tower but not having any luck. This medieval tower the name of the company?? Was the company German?? Are they still going? I am after a look picture of the marking so I can add it to my drawing. Thanks again
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Hi All I have seen this marking on a few switches, it look like a 'V' within a 'A' (lower right corner). Does anyone know the marking or the company? Thanks, Simon. Picture from
Forum: Modeling and schematics

RICH566, you have PM.
Forum: Technology and Operations

I have a set of plans for a Type IXD2 if you want them. I am not sure how much different there are between all the Type IX's as I only research the Type VII's Simon
Forum: Technology and Operations

Hi Don Thanks again Had not seen this before. It look like they change the system for the late war boat will have to change my drawing again Simon
Forum: Modeling and schematics

Thanks Don, that fantastic news, I just work is out from the plans I had that it was around 0.7°, but to know that it is 1° that great!!! I will add this information to my drawing
Forum: Modeling and schematics

Hi Don Thanks some much!!!
Forum: Modeling and schematics

Does anyone know anything more about the Lime-water (acid neutralizing) system for the battery compartments? I have seen the drawing from U-boat Archive but that the extent of that I know about this system.
Forum: Modeling and schematics

I know that these pictures are of poor quality, but I was wondering if anyone know that these words are (red arrows). Thanks, Simon
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Can anyone can confirm that the engine are 0.7° offset from the central line ???
Forum: Modeling and schematics