Why the postwar Royal Navy adopted Type numbers

Why did the Royal Navy adopt the Type system for postwar ships?

It suited the political desire for a modern fleet identity and reduced reliance on older names with unwanted associations.

One explanation for the postwar Type system is the desire to present a new technical and political identity for the fleet. Numbered designations offered distance from older names and their associations. The emphasis here is on the government's wish to make the new era visibly different. This is an interpretation of the naming policy, rather than a detailed account of each Type's classification or introduction.