What ships were built lightly in peacetime for successful wartime upgrading?
Short answerCounty-class cruisers and some sloops show the concept working, but "built for not with" frequently fails when the promised equipment is never funded.
NotesCounty-class cruisers and several sloops illustrate ships deliberately left with weight and space for rapid wartime completion, but the panel warns that planned equipment often never arrives. The Type 45 discussion shows the opportunity cost: space intended for Mark 41 cells instead received a different launcher arrangement, forgoing a mix of quad-packed Sea Ceptor and longer-range missiles. Design margin has value only when procurement follows through.