In December 2016, the Navy released a new force structure assessment that called for building a 355-ship fleet. CBO estimates that construction costs for 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. A larger fleet will also lead to greater operation and support costs.
