Why seven interwar capital ships preserve industrial capacity

How would a steady seven-ship interwar programme affect British shipbuilding by the late 1930s?

It would preserve the industrial base and make the later wartime expansion much easier.

A programme of seven ships in eight years can be spread into pairs and single orders rather than a single unsustainable surge. That steady cadence prevents capital-ship construction from falling to zero. Skilled workers, design teams, heavy-gun suppliers, and yards remain active at a higher baseline. When rearmament begins, Britain has a much shorter industrial climb to wartime output instead of rebuilding capacity that has been allowed to disappear.