Did the loss of HMS Captain teach the Royal Navy something new, or confirm a danger it already recognized but could not stop?
Short answerBoth: the navy already knew the design was dangerous, while the loss demonstrated the cost of failing to overcome political influence.
NotesThe disaster both taught a lesson and confirmed an existing warning. Naval professionals already understood that Captain was dangerous. Political influence had prevented that judgment from stopping the ship. Her survival would have spared the crew but might also have prolonged the institutional problem by allowing the design and its sponsor to claim vindication.