Technology and Operations  
This forum is for discussing technological & operational matters pertaining to U-boats. 

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9 years ago
Don Prince
Hi Ken, This book looks to be excellent. Schiffer Publishing always do quality books... It will be available at Amazon on Feb 20, 2010. They have not published a price, but it should qualify for free shiping. If the cost and shipping is less than the Aberdeen Book Store's price, then I'll order it from Amazon. Merry Christmas & Happy New Year... Regards, Don_
Forum: General Discussions
9 years ago
Don Prince
Hello Simon, This is the best that I can find for you on this item at this time.... Email to my Friend Jeff LaRue. Hi Jeff, A fellow on Uboat.net wants to know what these bumper devices are. I found the exact bumper devices in the “Vom Original zum Modell: Uboottyp VII C” on page 34. I only see those devices on U-Boats with snorkels so far. U-995 has the bollards removed
Forum: Modeling and schematics
9 years ago
Don Prince
Hi Simon, Perhaps this may help from the same web site... Regards, Don_
Forum: Modeling and schematics
9 years ago
Don Prince
Hi Simon, I didn't remember for sure, so I asked my friemd Mr. Jeffrey LaRue... Hi Don, ……Are you asking for the angle on the prop shafts? Each shaft diverged 1 degree from the centerline….i.e. getting farther apart as you move towards the stern. Does that help? -Jeff Regards, Don_
Forum: Modeling and schematics
9 years ago
Don Prince
Hello Simon, Farb- Gläser = Colored Glasses I believe this will switch from/to tinted lenses... Ausbausteilung = Removal Disision The same - remove division grid lense... This is my best guess, I hope this helps. Regards, Don_
Forum: Modeling and schematics
9 years ago
Don Prince
Hello Saskia, Please review the following article... U-96 most likely had a Green Laughing Sawfish. Dougie Martindale has done a great deal of research on the subject... I built my OTW Designs 1/32 scale Type VIIc and followed his advice. Originally I had it black because of the black and white photos... Regards, Don_
Forum: Movies and Films
10 years ago
Don Prince
Hello Gseuchler, I believe U-552 would not have had the upper net cutter in 1942. You can search the net for "Model U-boat crew 1/72" and that will provide many different kits. You should be very good at painting these very small figures. I painted the Andrea 1/32 crew and the photos are posted on the Subcommittee tack board as follows: Best regards, Don_
Forum: General Discussions
10 years ago
Don Prince
Sorry Dan, I don't recall the seeing the Torpedo targeting device... Regards, Don_
Forum: General Discussions
10 years ago
Don Prince
Hi Andy, The Type VII had saddle tanks that looks like blisters on the hull sides. The Type IX did not have saddle tanks. I hope this helps... Regards, Don_
Forum: General Discussions
10 years ago
Don Prince
Hello Jukka, Wow! What a great question... Several years ago, I asked the French Embassy here in the U. S., if it was possible to get a piece of the U-Boat Bunker Concrete from the RAF bombing site. About a month later, I received a copy of an aerial photo of Brest taken in 1946, and a copy of a photo taken in 1944 when the U.S. Infantry Division (Blue & Gray) liberated the Brest U-Boat
Forum: General Discussions
10 years ago
Don Prince
Welcome aboard Gary, I have been a student on U-Boats for about seven years... You will enjoy this subject/passion and there are quite a few people who post on this forum that are experts in the field (and I'm NOT one of them!). I'm finally retired (68 Years old) from my computer support job of more than 46 years. Now, I can spend more time researching U-Boats (Especially the Typ
Forum: General Discussions
10 years ago
Don Prince
Hello Robert and Peter, Robert: I purchased the two DVDs that were available at the Museum store; "Attach and Capture the story of U-Boat 505" (Discovery Channel), and "U-505 extend the EXPERIENCE" Museum of Science and Industury" Peter: This was the special breakfast tour on Sunday before the museum was open. The tour guide simply stated that taking photos would
Forum: General Discussions
10 years ago
Don Prince
Hi Robert, Yes, we both took some photos of the Torpedo and the Piston, plus a few other displays. I can email you what I have if you need them. Just remember we are amature photographers and not everything came out as planned. If you have photos of the switchboard and the control labels, then I sure would like to get a copy of them. My email address is dprin&#
Forum: General Discussions
10 years ago
Don Prince
Gentlemen, I posted several photos on the Subcommittee web site from my trip to U-505 at the Museum of Science and Industry in Chicago last weekend. Plesae go to the link provided if you desire to do so... Regards, Don_
Forum: General Discussions
10 years ago
Don Prince
5310. Depth control will have considerable bearing on the success or failure of evasive tactics in connection with depth charge attacks. While deep submergence is a recourse available to assume the farthest position away from depth charges, it also enables the depth charge which is set for deep explosion to be effective at greater distances from the pressure hull. On the other hand, with the
Forum: Technology and Operations
10 years ago
Don Prince
NAVAL ORDNANCE AND GUNNERY VOLUME 1, NAVAL ORDNANCE CHAPTER 14 ANTISUBMARINE WEAPONS It is extremely difficult to obtain a direct hit with depth charges, because the exact position of the submarine usually is not known. Consequently, depth charges depend on the percussive wave of the explosion for their effectiveness. The effective radius of the percussive wave depends upon the str
Forum: Technology and Operations
10 years ago
Don Prince
Hi Keith, I got mine from... www.soldat.com They are also available on ebay from various sellers. You will need to decide if you want a Captain (Oak leafs on the brim), or a Lieutenant (small Scallops on the brim as worn in the Das Boot movie). Mine is a Lieutenant cap. Soldat can sent you one that looks new and crisp (Like mine), or they can age it to look more authentic. Regards
Forum: General Discussions
10 years ago
Don Prince
Don, Search with keyword "sawfish" and dates "ALL". This subject has been discussed many times... Regards, Don_ I posted this over 3 years ago... 20. Re: Were all netcutters removed in 3-41, what about U96 "The artist named Kossatz, a friend of Lehmann-Willenbrock painted the fish on the U-boat, originally in green." That's why I hand painted the
Forum: Modeling and schematics
10 years ago
Don Prince
Hello Gerard, The manual for the Type VIIC U-Boat Data: -----------RPM---------sm/h*---------sm/h ============================== KF---------180----------7.2-----------7.0 LF---------275---------10.2----------10.0 HF---------340---------12.4----------12.0 2xHF-------396---------14.6----------14.0 GF---------435---------16.3----------16.0 AK---------471---------17.7-------
Forum: General Discussions
10 years ago
Don Prince
Hello Jukka, (Note* I didn't misspell your name this time...) The comparison between the Fleet boat Submarine (Balao Class) and the U-Boat (Type VIIC) comes out like this Length 311 ft. 9 in. for the Balao Length 220.1 ft in length for the VIIC Beam 27ft 4 in. for the Balao Beam 20.34 ft for the VIIC Surface speed 20.5 Knots for the Balao --- a little faster Surface speed 17.2
Forum: General Discussions
10 years ago
Don Prince
Hello Oxullop, U-BOATS; The Illustrated History of the Raiders of the Deep by Daiid Miller page 105 discusses detecting a single ship at 20 km (11 nm) and a convoy at about 100 km (54 nm) with the Hydrophones (GHG) Gruppenhorchgerät. Regards, Don_
Forum: Technology and Operations
10 years ago
Don Prince
Hi Don, Lothar-Gunther Buchheim's photos taken on the patrol that started October 26, 1941 the upper net cutter is not present. The photos are available in the book U-Boat War. I found this on the internet.... For model-makers wishing to make U-96, the following details of the boat's modification may be useful - Net cutters = NC, breakwaters=bw, wind deflector= wd
Forum: Modeling and schematics
10 years ago
Don Prince
possibly... druckwasserwahler water pressure selection Or- druckwasserwähler Water pressure dial Obviously, some of our German speaking friends can do better than my German to English dictionary... Regards, Don_
Forum: Technology and Operations
10 years ago
Don Prince
Hi Simon, Send me an email and I will send you some photos of my OTW Type VIIc with a brass deck and tower. OTW has the locations of the antennae wires anchors at the bow and stern. dprince004@sc.rr.com The first barss sheet: This page shows the slots above the doors that open outward. There i
Forum: Modeling and schematics
10 years ago
Don Prince
Hello Maciek, I got a photo copy of the book from a book seller in Germany for $150.00 (If I remember correctly?). Most of the time he doesn't respond to my emails. I am in the process of making a copy and sending it to Captain Jerry Mason at UboatArchive and he is planning on posting it on his web site. Regards, Don_
Forum: Modeling and schematics
10 years ago
Don Prince
Hi Simon, I think your artwork is outstanding. When you get it all done, please contact me to let me know how I can get a copy with compensation for your work of course. Dprince004@sc.rr.com Regards, Don_
Forum: Modeling and schematics
10 years ago
Don Prince
Hello SnakeDoc, The U-boat manual: M.Dv 381 U-Bootskunde f.U-Boot Bauart VIIC-1940 Geheim Naval Service Manual 381 U-Boat training for submarine type VII C edition - 1940 Secret My poor attempt at a translation.... Page 38: Wasserdichtes Heck und Back. Der vorderste und hinterste Teil des Außenschiffes ist zur Dämpfung der Stampfbewegung des Bootes als wasserdichte Back b
Forum: Modeling and schematics
10 years ago
Don Prince
Hi Francois, Fastastic work done on your Seehund! Be sure and send some photos to Bob at OTW. Regards, Don_
Forum: Modeling and schematics
10 years ago
Don Prince
Hi Simon, You are absolutely correct there is a Stern and Bow bouyancy tank. There is a trim pump in the control room that can move water between the two tanks to balance the U-boat. Jerry and Carla Mason's web site has a drawing for this process. Regards, Don_
Forum: Modeling and schematics
10 years ago
Don Prince
Hi Francois, You may want to post your questions on one of the Subcommittee web site forums (message board). There are several people that have built the OTW Seehund in this group. Regards, Don_
Forum: Modeling and schematics
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