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Foca-class submarine
The ''Foca''-class were a group of three minelaying submarines built for the Royal Italian Navy (''Regia Marina'') during the 1930s.
==Design and description==
The ''Foca''-class submarines were improved versions of the preceding . They displaced surfaced and submerged. The submarines were long, had a beam of and a draft of .〔Chesneau, p. 305〕
For surface running, the boats were powered by two diesel engines, each driving one propeller shaft. When submerged each propeller was driven by a electric motor. They could reach on the surface and underwater. On the surface, the ''Brin'' class had a range of at , submerged, they had a range of at .〔Bagnasco, p. 156〕
The boats were armed with six internal torpedo tubes, four in the bow and two in the stern. They did not carry and reload torpedoes. They were also armed with one deck gun for combat on the surface. The gun was initially mounted in the rear of the conning tower, but this was re-sited on the forward deck later in the war in the surviving boats and the large conning tower was re-built to a smaller design. The light anti-aircraft armament consisted of two pairs of machine guns.〔 The ''Foca'' class carried a total of 36 mines. Twenty mines were stored in a central chamber, while the remaining 16 mines were kept in two aft chutes through which the mines were ejected.〔
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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