Why British 16-inch gun development slowed after Nelson

Why did the Royal Navy not continue developing 16-inch guns after Nelson and Rodney?

Treasury-Admiralty funding disputes curtailed the work even though the treaties did not directly ban gun development.

The naval treaties governed ships and armament limits without simply prohibiting all gun research. Britain could therefore have kept a mature 16-inch programme moving after Nelson and Rodney. Funding disputes between the Treasury and Admiralty stopped the work rather than a technical treaty ban. Industrial continuity still depended on budgets even when international law left room for development.