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''Rolf Krake'' was a Danish monitor built in Scotland during the 1860s. The vessel was designed by Cowper Phipps Coles, a pioneering naval architect, and was the first warship of any navy to carry a turret of the type designed by Coles. She was the first all-iron, steam-powered vessel acquired by Denmark. ==Design and description== ''Rolf Krake'' was ordered in 1862 as tensions rose between Prussia and Denmark over the Duchy of Schleswig-Holstein in the early 1860s.〔Putnam, p. 57〕 The ship had an overall length of , a beam of , and a draft (ship) of . She displaced and her crew consisted of 140 officers and ratings.〔Silverstone, p. 55〕 Hinged bulwarks were fitted to improve ''Rolf Krake''s seakeeping abilities.〔 She was equipped with a beak-shaped ram at the bow.〔Putnam, p. 59〕 The ship had one direct-acting steam engine that drove a single propeller,〔 using steam provided by two boilers. The engine produced a total of 〔 which gave her a maximum speed of during her sea trials in mid-1863.〔Putnam, p. 60〕 ''Rolf Krake'' carried of coal,〔Chesneau & Kolesnik, p. 365〕 enough to steam at .〔 She was schooner-rigged with three masts.〔 ''Rolf Krake'' was initially armed with four Swedish-built 68-poounder smoothbore guns, one pair in each gun turret. The hand-operated turrets took a crew of 18 men one minute to complete a full revolution.〔Putnam, pp. 57, 59〕 The ship had a complete waterline belt of wrought iron that was thick. It completely covered the hull from the upper deck to below the waterline and was backed by of wood. The armour protection of the turrets was quite elaborate. The inside of the turret was lined with of iron boiler plate to which T-shaped beams were bolted. The space between the beams was filled with of wood. This was covered by an iron lattice thick that was covered in turn by of wood. The 4.5-inch iron plates were bolted to the outside using bolts that ran through to the interior iron "skin". The area around the gun ports was reinforced by plates to give a total thickness of 8 inches. The pilothouse was protected by 4.5 inches of iron backed by of wood. One of the ship's major weaknesses was that the deck was virtually unprotected, consisting only of of sheet iron covered by of wood.〔〔Putnam, pp. 59–60〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Danish ironclad Rolf Krake」の詳細全文を読む スポンサード リンク
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