The carrier example puts the cost of two ships at the equivalent of roughly three and a half because construction was stretched out. This is an illustrative comparison of the penalty for extending the programme, with no itemised cost calculation supplied. Its target is the use of schedule changes to fit politically convenient budgets. Spreading payments over more years can increase the eventual total even when less money is needed immediately.
Notable Point · 12:48-13:08
How stretching carrier construction raised costs
Extending the Queen Elizabeth-class build schedule is used to show how short-term budget timing can increase a program's total cost.