How capable would the Dutch Navy be with fifteen De Zeven Provinciën-class frigates?
Short answerIt would gain enormous air-defence and command capacity, but crewing, sustainment, and a clear operational purpose would determine how much of that capacity was usable.
NotesFifteen ships of the class would give the Netherlands a large increase in air-defense and command capacity. The short reply immediately asks how they would be crewed and kept operating. It also asks what force structure and missions would justify the larger fleet. The capability judgment is therefore conditional on supplying people and support and giving the ships a purpose.