Why did the Royal Navy later abandon the 9.2-inch calibre?
Short answerMostly for logistical reasons, although the decision involved extensive debate.
NotesAn audience question asks why the Royal Navy later moved away from the 9.2-inch calibre. The short answer attributes the change mostly to logistics while acknowledging extensive debate. It does not make logistics the sole consideration or offer a detailed design verdict. The response complements the earlier discussion of how multiple calibres complicated ammunition supply and encouraged standardization.