Wartime adaptation can produce a useful ship

The sisters were wartime improvisations, completed when the Royal Navy needed anti-aircraft vessels quickly and resources remained under strain. The Ten Year Rule had delayed readiness even after its formal abandonment, leaving programmes still working up when war began. Fitting weapons to a hull not designed around them can still create a viable ship, provided the fleet is realistic about the resulting role. The sisters' record in escort and command work supports that conclusion, while their different fates show the cost of using a specialist in an unsuitable operation or repeating a tactic until the enemy can prepare for it. Their story invites comparison with other wartime ships completed with substitute weapons and the roles in which those altered ships succeeded or failed.