How HMS Warrior made the Royal Navy a technological benchmark

Which nineteenth-century experience after 1815 had the most significant effect on the Royal Navy?

HMS Warrior, because it taught the Navy how a technological breakthrough could make Britain the benchmark that every other fleet had to follow.

The answer chooses Warrior rather than a particular nineteenth-century war as the experience with the greatest institutional effect on the Royal Navy after 1815. Warrior and the French Gloire broke a period in which warships had remained broadly comparable and showed how new technology could establish global naval status. Britain then sought to repeat that benchmark-setting effect with Dreadnought and later innovations. The lesson is that technical leadership could preserve superiority more economically by forcing rivals to measure themselves against a British standard.