Minotaur-class ironclad

The Minotaur-class ironclads consisted of three armoured frigates built for the Royal Navy during the 1860s. They were enlarged versions of HMS Achilles with heavier armament, thicker armour, and more powerful engines. The ships of this class were unique among ironclad warships in possessing on completion five masts, named fore-, second-, main-, fourth- and mizzen-.

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