According to a provision in the 2021 National Defense Authorization Act on President Trump's desk, the US Navy will be required to build an FFG class land-based ship testing system for the engineering plant used in its new Constellation class frigate program. The frigate project recently known as FFG (X) includes a propulsion system that has not been previously used in the Navy, and congressional authorities believe this is a risk that can be mitigated through testing facilities. The ship was modified based on Fincantieri's FREMM design, which is a strategy to reduce overall project risks by utilizing existing designs. Although recognizing that existing parent company designs can reduce design, technology, and integration risks, "an explanatory statement from the NDAA stated," attendees are concerned that significant risks still exist in the FFG-62 project, including: cost pressures; a shift towards US based component suppliers rather than foreign suppliers primarily used in the parent ship design; and a complex diesel electric and gas hull, mechanical and electrical (HM&E) drive system, and distribution system（SSPC module）It has never been used on a US Navy vessel before

This measure is the latest in a series of measures requested by the US Congress for the Navy to take. Congress has repeatedly expressed concerns about the Navy's questionable record in deploying new technologies, and Congress is increasingly skeptical about this. Member states have put forward restrictions on the speed of progress of the navy in some unmanned driving technologies, for example, they are concerned about the high fees for this service and find that their concepts cannot be put into effect, which has been troubling the coastal warship program.Capable of simulating the full range of power demand in order to investigate the load dynamics between HM&E equipment, combat systems, and auxiliary equipment

The US Navy will be required to submit a plan for implementing a land-based test site in the 2022 budget materials. And not long agoTrump has threatened to veto the NDAA because he wants to include an unrelated clause in the bill as part of his ongoing feud with social media companies, but it is unclear whether he will implement the veto threat.