Free entrance, self guided walking tours, electronic audio guide available
Site history
Built
February 1943 to March 1945 (unfinished)
Materials
Ferrous concrete
The Valentin submarine factory is a protective shelter on the Weser River at the Bremen suburb of Rekum [de; nds], built to protect German U-boats during World War II. The factory was under construction from 1943 to March 1945 using forced labour, but was damaged by air-raids and unfinished by the end of the war. The Valentin factory was the largest fortified U-boat facility in Germany, and was second only to those built at Brest in France.
As a manufacturing facility, it differed from conventional U-boat pens, which were designed to house and service operational U-boats.
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The Valentinsubmarine factory is a protective shelter on the Weser River at the Bremen suburb of Rekum [de; nds], built to protect German U-boats during...
applied to submarine bases constructed during World War II, particularly in Germany and its occupied countries, which were also known as U-boat pens (after...
carried out in the Valentinsubmarinepens, a massive, bomb–hardened concrete bunker built at the small port of Farge, near Bremen. The pens were constructed...
included the shipyards of Vulkan, AG Weser and Atlas Werke, the Valentinsubmarinepens, oil refineries and the aircraft works of Focke-Wulf. Early RAF...
British Royal Navy to penetrate hardened concrete targets, such as submarinepens, which could resist conventional free-fall bombs. Devised by Royal Navy...
penetrate defences, though they could do this (for example, the Valentinsubmarinepens had ferrous concrete roofs 4.5 metres (15 feet) thick which were...
the massive Organisation Todt (OT), which built Siegfried Line, Valentinsubmarinepens, and launch pads for the V-1 flying bomb and V-2 rocket, among...
(Versailles permitted 6), 48 destroyers (Versailles permitted 12), and 72 submarines (completely banned by the treaty). The unprecedented size of the military...
War II. Two of these bombs were dropped on the U-Bootbunkerwerft Valentinsubmarinepens near Bremen and these barely penetrated 4 to 7 m (13 to 23 ft)...
on-site supervising engineer for the construction of the well known Valentinsubmarinepens. This was constructed between 1943 and 1945 under a contract from...
to the end of the war. Since they could not destroy the base and its submarinepens, the Allies had decided to flatten the city and port of Lorient to cut...
Dora I (Dora 1) is a former German submarine base and submarinepen or bunker built in Trondheim, Norway. Construction of the bunker (designated by the...
Seehund (German: "seal"), also known as Type XXVII, was a midget submarine built by Nazi Germany during World War II. Designed in 1944 and operated by...
The Leigh Light (L/L) was a British World War II era anti-submarine device used in the Battle of the Atlantic. It was a powerful (22 million candela)...
of the U-boat force. The Germans later built huge fortified concrete submarinepens for the U-boats in the French Atlantic bases, which were impervious...
Ghetto SubmarinepenValentin (Farge) in Bremen-Rekum (photo credit: Olga Ernst, 2021) Bremen-Farge.- Construction of the submarine bunker "Valentin", assembly...
German targets such as V-2 rocket launch sites, the V-3 supergun bunker, submarinepens and other reinforced structures, large civil constructions such as viaducts...
Dora II (Dora 2) is an unfinished German submarine base and submarinepen or bunker in Trondheim, Norway, which is next to Dora I (Dora 1). Construction...
the weather was good enough, they could divert submarines from XX to sink with naval forces. Submarines that were not used for target practice were to...
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Soviet ports. Particular dangers included: the proximity of German air, submarine and surface forces the likelihood of severe weather the frequency of fog...
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