Western powers knew Japan bought British ships and had fought alongside them during the Boxer Rebellion, but Tsushima demonstrated the operational quality of the Japanese navy. American confidence in an easy Pacific victory gave way to renewed arithmetic about ships, coal, and bases. The shock reinforced Theodore Roosevelt's case for naval funding after earlier congressional neglect had already left planners uneasy about South American fleets. The Great White Fleet could display reach, yet that reach still depended heavily on access to a global fuel network. Japan also incorporated captured Russian vessels, changing the regional balance that foreign planners now had to take seriously.
Notable Point · 2:18:17-2:22:25
Tsushima revealed Japan as a first-rate naval power
Japan's victory forced the United States and other powers to reconsider Pacific naval balances and the coal needed to project fleets across the ocean.