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Castore-class gunboat
The Italian ''Castore''-class gunboats, ''Castore'' and ''Polluce'', were a class of two Rendel gunboats, designed and built by Sir W G Armstrong Mitchell & Co.'s Elswick Works in the late 1880s to a contract by the Italian War Ministry.〔 Designed by Philip Watts and Herbert Rowell, and constructed in Elswick's Tyneside yard in the United Kingdom, the two gunboats were dissassembled and shipped to Italy for reassembly in the Armstrong facility at Pozzuoli,〔 proving to be the only ships constructed there after the Italian government cancelled the shipyard project.〔 It is uncertain whether the vessels were designed as testbeds for heavy guns, or were intended from the outset as operational gunboats.〔
==Design==
Both vessels were laid down in the Elswick yard on 22 February 1887.〔 Built to a design calling for a length of and a beam of , giving them a length to beam ratio of 3.1:1, they displaced under normal conditions, and were powered by two steam engines, driving a pair of propellers that gave a speed of around .〔
As constructed, both vessels were armed with a single, massive Krupp , 32-caliber cannon mounted on the stern, that could be elevated to an angle of 13 degrees, firing a shell.〔
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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