You mentioned inflation, which is running at 7% or 8% in this country. It is obviously an important contributor to increased costs.
Also, every time you delay the program by a year, it adds costs because you have to maintain project management for an additional year. It also means that, not only is the first ship coming into service delayed, but all the other ships are delayed as well. In fact, the one-year delay in having the first ship translates into up to four years' delay in getting the last 10 ships. A one-year delay at the beginning of the period means a four-year delay for the last 10 ships, which significantly adds to the cost.