... As to the Great White Fleet, the logistics of actually sending a major steam powered battlefleet on a world tour had never been tackled before. Other powers sat up & took notice of that demonstration of naval professionalism.
Tsushima showed a Russian battlefleet arriving in no shape to do battle. The US showed how it might have been done properly. The IJN certainly took notice.
It was a guy named Mahan who knew sea power and how to use it. https://history.state.gov/milestones/1866-1898/mahan