An enlarged Daring with another twin 4.5-inch mount

Could a lengthened Daring-class destroyer carry another twin 4.5-inch mount?

Yes, the extension is considered feasible, but the purpose of the additional firepower would need to be explained.

An enlarged Daring-class destroyer could accommodate another twin 4.5-inch mount. The extra firepower is considered technically feasible, but its intended task remains unexplained. A design that can carry more guns still needs an operational reason for doing so.