The following is the April 30, 2019 Congressional Research Service report, Navy Force Structure and Shipbuilding Plans: Background and Issues for Congress.
From the report
The current and planned size and composition of the Navy, the rate of Navy ship procurement, and the prospective affordability of the Navy’s shipbuilding plans have been oversight matters for the congressional defense committees for many years.
On December 15, 2016, the Navy released a force-structure goal that calls for...
https://news.usni.org/2019/05/02/report-to-congress-on-navy-shipbuilding-force-structure