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unusual facts about 3.7 cm SK C/30



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German submarine U-441

The U-flak boats had greatly increased anti-aircraft firepower, U-441 was fitted with additional gun platforms forward and aft of the conning tower, which served as a base for two four-barrelled Flakvierling 20 mm flak guns and one 3.7 cm weapon, as well as a number of MG 42 machine guns.


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