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central battery ship : ウィキペディア英語版
central battery ship

The centre battery ship (UK) or casemate ship (continental navies) was a development of the (high-freeboard) broadside ironclad of the 1860s. The central battery ships had their main guns concentrated in the middle of the ship in an armoured citadel. The concentration of armament amidships meant the ship could be shorter and handier than a broadside type like previous warships. In this manner the design could maximize the thickness of armour in a limited area while still carrying a significant broadside. These ships meant the end of the armoured frigates with their full-length gun decks.
In the UK, the man behind the design was the newly appointed Chief Constructor of the Royal Navy, Edward James Reed. The previous Royal Navy ironclad designs, represented by HMS ''Warrior'', had proven to be seaworthy, fast under power and sail, but their armour could be easily penetrated by more modern guns. The first central battery ship was HMS ''Bellerophon'' of 1865. Great Britain built a total of 18 central battery ships before turrets became common on high-freeboard ships in the 1880s.
The 2nd British central battery ship, HMS ''Hercules'', served as model for the Austrian navy, starting with their first design (6,100 tons) designed by Joseph von Romako and launched in 1871. The Austrian —not to be confused with German —was built along a similar design, although the hull had been converted from a wooden ship, and it was slightly smaller (5,800 tons). The Austrian central battery design was pushed further with (7,100 tons) and (5,900 tons), which had double-decked casemates; after studying the Battle of Lissa, Romako designed these so more guns could shoot forward. Three older broadside ironclads of the ''Kaiser Max'' class (3600 tons: ''Kaiser Max'', ''Don Juan D'Austria'' and ''Prinz Eugen'') were also officially "converted" to casemate design, although they were mostly built from scratch. The largest design yet was the , later renamed to ''Mars'' when was commissioned.〔; 〕 The Austrian records distinguish between the category of older broadside ironclads and the newer designs using the words ''Panzerfregatten'' (armoured frigates) and respectively ''Casemattschiffe'' (casemate ships).〔K. K. Statistische Central-Commision, ''Statistisches Jahrbuch der Oesterreichischen Monarchie'', 1875, pp. 74-75〕〔Alfred von Zvolenszky, ''Handbuch über die k. k. Kriegs-Marine'', A. Hartleben's Verlag, 1887, p. 13〕
The German navy had two large casemate ships (about 8800 tons) of the ''Kaiser'' class built in UK shipyards. The first ironclad of the Greek navy, ''Vasilefs Georgios'' (1867), was also built in the UK; at 1700 tons, it was a minimalist casemate design having only two large 9in guns, and two small 20 pounders. The Italians had three casemate ships built, , converted from broadside during construction, and the two s.
The disadvantage of the centre-battery was that, while more flexible than the broadside, each gun still had a relatively restricted field of fire and few guns could fire directly ahead. The centre-battery ships were soon succeeded by turreted warships.
== Notes ==


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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