How larger dry docks reshape fleet options

What would change if British dry docks were doubled in length and breadth before 1918?

Capital-ship repair capacity would expand dramatically, and infrastructure would impose fewer limits on ship size.

Doubling existing dry docks in length and breadth would greatly increase the places able to take capital ships. Facilities previously limited to cruisers, destroyers, or smaller vessels could handle much larger hulls. Major ships would have more options when they needed repairs. The proposal assumes the docks also become deeper, since length and breadth alone would leave draught limits unresolved.