At the shipyard - Building a U Boat.

German Kriegsmarine 1935-1945.

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tigre
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Re: At the shipyard - Building a U Boat.

Post by tigre » Mon May 08, 2017 4:19 pm

Hello to all ; more..........................

German shipyards and the evolution of the U-bootwaffe (1932-1939). Type I A.

Going back a little bit with the Type (from II to I) but chronologically following the evolution in time, here appears another great shipyard that had active participation in the reconstruction of the submarine force. The participation of the shipyard Deschimag AG Weser, Bremen in the construction of U boats began in 1934 with an order of two Type I A submarines; these boats were U 25 and U 26 (ordered on December 17, 1934, were commisioned during 1936). However, the originally planned construction of additional submarines of this type, was canceled because Dönitz selected as the backbone of his force the smaller Type VII.

Also from the German Naval Command was selected the shipyard Vulkan Vegesack Werft, Bremen as another of the shipyards for the new U boat Branch. At first, in the years 1934/1935, the monthly construction of a Type I A submersible was planned, but then, in 1936, the construction program was changed to one or two U boats per month of Type VII.

The Type I A was a single-hull deep-sea submersible with large ballast tanks at each side. Derived directly from the Turkish U boat Gür (Ex Spanish E1, built in 1932 in Spain with a German design). This type then served as a model for the development of the U boat Type IX.

In the construction of the U boats Type I A, intervened a single shipyard, Deschimag AG Weser, Bremen (2 units). The batch of submersibles of this type planned to be built by the shipyard Vulkan Vegesack Werft, Bremen, was canceled.

Sources: Vom Original zum Modell. Uboot Typ II.
Http://www.u-boot-archiv.de/bau/werften/index-w.html
Http://www.t2balli.de/index.php/modellb ... -weltkrieg

Cheers. Raúl M 8).
Attachments
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Sections of the Type IA hull at the shipyard Deschimag AG Weser, Bremen .........................................
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The U 25, whose keel was laid down on June 28, 1935; to the right the keel of the U 26 would be laid down on August 1, 1935 ....................................................
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Construction of the U 25 (right) and the U 26 in the middle of the year 1935 ..............................................
image003.png (202.55 KiB) Viewed 82 times
Serás lo que debas ser o no serás nada. General José de San Martín.

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Prosper Vandenbroucke
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Re: At the shipyard - Building a U Boat.

Post by Prosper Vandenbroucke » Tue May 09, 2017 1:51 am

The polish submarine "Orzel" (Eagle) under construction at Vlissingen in the Netherlands ("De Schelde" shipyards)
The "Orzel" was launched on the 15th of july 1938
orzel_construction.jpg
orzel_construction.jpg (30.35 KiB) Viewed 76 times
http://www.u-boote.fr/orzel.htm

Kindly regards
Prosper

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Re: At the shipyard - Building a U Boat.

Post by tigre » Tue May 09, 2017 3:31 pm

THanks for sharing it here Prosper :wink:. Cheers. Raúl M 8).
Serás lo que debas ser o no serás nada. General José de San Martín.

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Re: At the shipyard - Building a U Boat.

Post by tigre » Mon May 15, 2017 1:46 pm

Hello to all :D; more..........................

German shipyards and the evolution of the U-bootwaffe (1932-1939). Type VII A.

As already mentioned, the originally planned construction of additional Type IA submarines was canceled in favor of the smaller Type VII, so that on April 1, 1935 the shipyard Deschimag AG Weser, Bremen received the order for building six units of that type; These U boats were U 27 to U 32 (the first were commissioned in 1936 and the last in 1937).

Also on March 25, 1935 the shipyard Krupp Germaniawerft, Kiel was engaged to build four other units of Type VII A; These were from U 33 to U 36 (all were commissioned during 1936).

In these ships, the objective was to maximize its strength, sea resistance, surface and immersion maneuverability, speed (surface and immersion), autonomy, number of torpedoes, construction speed and easy maintenance. All of the above was achieved, even with small dimensions and little displacement, but without giving up quality in favor of the offensive and constructive characteristics. The result was a submersible of only 915 tons of displacement in the surface and 64.50 meters in length. But the ship combined a marked degree of offensive power and was able to sail out of the coastal waters. The characteristics of Type VII were not exceptional in themselves, but their well-balanced features and high performance made it a formidable weapon of war and one of the most successful types ever built.

The first version of type VII (A) was characterized by carrying a single torpedo launch tube aft, located outside the pressure hull. This arrangement did not allow recharging during navigation.

In total, ten units of Type VII A were built and two shipyards, Deschimag AG Weser, Bremen (6 units) and Krupp Germaniawerft, Kiel (4 units) participated in the construction of this U boat type.

Sources: Vom Original zum Modell. Uboot Typ II.
Http://www.u-boot-archiv.de/bau/werften/index-w.html
Http://www.t2balli.de/index.php/modellb ... -weltkrieg

Cheers. Raúl M 8).
Attachments
image002.jpg
Sections of the hull of the Type VII A (U 27 to U 32) at the shipyard Deschimag AG Weser, Bremen ........
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image004.jpg
Section of the pressure hull of the U 27, whose keel was laid down on November 11, 1935 ........................
image004.jpg (36 KiB) Viewed 59 times
image006.jpg
U 27 in the middle of December of 1935 ....................................................................................
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Serás lo que debas ser o no serás nada. General José de San Martín.

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Re: At the shipyard - Building a U Boat.

Post by tigre » Tue May 23, 2017 12:10 pm

Hello to all :D; more..........................

German shipyards and the evolution of the U-bootwaffe (1932-1939). Type IX A.

At the same time, the Type IX A, which replaced the Type I A, entered series production at the shipyard Deschimag AG Weser, Bremen. On July 29, 1936 four units of this type were ordered, from U 37 to U 40, and on November 21, 1936, were ordered four more from U 41 to U 44. In order to achieve the construction of the hull in the shortest possible time, the construction in sections, which was later taken by the other shipyards for the type VII C series production, had been introduced into the shipyard specifically for the production of the Type IX. The first three U boats Type IX A entered service in 1938 (U 37, 38 and 39) and the last five entered service the following year, 1939 (U 40, 41, 42, 43 and 44). The U 43 was the last to be commissioned before the war (August 26, 1939), while U 44 entered service only on November 4, 1939.

The Type IX was a double-hull ocean-going U boat, the design of which was derived from the U 81-U 86 series of 1916, which in many aspects resembled the Type IA design of 1936. Comparing with the Type VII, which was almost contemporary, the Type IX had a greater displacement, more habitability and, above all, a greater range of action, since it was designed for operations far from its base of operations. By design, the two types differed completely. Instead of the individual hull with ballast tanks as the Type VII, this design had double hull. This was mainly to achieve better surface navigability. In addition, part of the fuel was stored in the space between both hulls. In this double hull were also located all the ballast tanks. In the upper deck was mounted a 10.5 cm L / 45 gun and a Flak 2 cm gun, the latter on a platform behind the conning tower.

In the construction of the U boats Type IX A, intervened a single shipyard, Deschimag AG Weser, Bremen (8 units).

Sources: Vom Original zum Modell. Uboot Typ II.
Http://www.u-boot-archiv.de/bau/werften/index-w.html
2. U-BOOT Medal, Document, Wehrpass & CAP Grouping - KIA - U-41 - TOP! .. Historical Media, LLC
Http://www.ebay.at/itm/U-Boot-Foto-U-43 ... SwYIxX2obk
Http://www.ebay.at/itm/U-Boot-Foto-U-42 ... Sw8gVX2oom
Http://www.u-boot-archiv.de/typen/typ_ixa.html
Cheers. Raúl M 8).
Attachments
image007.png
Commission (Indienststellung) of U 41 on April 22, 1939 under Kplt. Gustav-Adolf Mugler - Deschimag AG Weser, Bremen .................................
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Commission of U 42 on July 15, 1939 under Kplt. Rolf Dau - Deschimag AG Weser, Bremen ....................
image008.png (171.94 KiB) Viewed 42 times
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Commission of U 43 on August 26, 1939 under Kptlt. Wilhelm Ambrosius - Deschimag AG Weser, Bremen ........
image009.png (205.4 KiB) Viewed 42 times
Serás lo que debas ser o no serás nada. General José de San Martín.

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