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Biber (submarine)
The Biber (German for "beaver") was a German midget submarine of the Second World War. Armed with two externally mounted 21-inch (53 cm) torpedoes or mines, they were intended to attack coastal shipping. They were the smallest submarines in the Kriegsmarine.
The Biber was hastily developed to help meet the threat of an Allied invasion of Europe. This resulted in basic technical flaws that, combined with the inadequate training of their operators, meant they never posed a real threat to Allied shipping, despite 324 submarines being delivered. One of the class's few successes was the sinking of the cargo ship ''Alan A. Dale''.
A number have survived in museums including one example that has been restored to operational condition.
==Development==
Construction of the first prototype began in February 1944 and was completed in less than 6 weeks.〔 The initial prototype was officially titled ''Bunteboot'' (but better known as ''Adam'') was heavily influenced by the British Welman submarine.〔 It differed from the final design in a number of respects such as being nearly 2 meters shorter.〔 Following testing on the Trave river on 29 May twenty four Bibers were ordered.〔Paterson 2006, p. 60.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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