CBO estimates that construction costs to build a fleet of 355 ships would average $26.6 billion (in 2017 dollars) per year over the next 30 years, which is 60 percent more than what the Navy has spent on average over the past 30 years.

    

CBO was asked at a recent hearing how deficit projections would be affected if individual economic variables differed from what the agency expects. This blog post discusses how lower rates of labor force participation would affect the deficit.