Would the Scharnhorst class fit the armor-and-speed side of the design diagram?
Short answerNot cleanly, because its 11-inch guns still provide substantial capital-ship firepower.
NotesA viewer proposes Scharnhorst as an armor-and-speed design, but her firepower is too substantial to dismiss. The 11-inch battery may be lighter than that of many contemporary battleships, yet it remains a serious capital-ship armament. The design triangle is a comparative tool rather than a rigid classification system. A ship belongs at the armor-speed extreme only when offensive power has been sacrificed much more completely.