From the report
The Navy’s DDG(X) program envisages procuring a class of next-generation guided-missile destroyers (DDGs) to replace the Navy’s Ticonderoga (CG-47) class Aegis cruisers and older Arleigh Burke (DDG-51) class Aegis destroyers. The Navy wants to procure the first DDG(X)* in FY2030. The Navy’s proposed FY2023 budget requests $195.5 million in research and development funding for the program.
Navy Large Surface Combatants (LSCs)
The Navy refers to its cruisers and destroyers collectively as large surface combatants (LSCs).The Navy’s current 355-ship force-level goal, released in December 2016, calls for achieving and maintaining a force of 104 LSCs. The Navy’s FY2023 30-year (FY2023-FY2052) shipbuilding plan, released on April 20, 2022, summarizes Navy and OSD studies outlining potential successor Navy force-level goals that include 63 to 96 LSCs.
The Navy’s CG-47s and DDG-51s are commonly called Aegis cruisers and destroyers because they are equipped with the Aegis combat system, an integrated collection of sensors and weapons named for the mythical shield that defended Zeus. The Navy procured 27 CG-47s between FY1978 and FY1988. The ships entered service between 1983 and 1994. The first five, which were built to an earlier technical standard, were judged by the Navy to be too expensive to modernize and were removed from service in 2004-2005. Of the remaining 22 ships, the Navy’s FY2023 budget submission proposes retiring 5 in FY2023, another 12 in FY2024-FY2027, and the final 5 in years after FY2027.
The first DDG-51 was procured in FY1985 and entered service in 1991. The version of the DDG-51 that the Navy is currently procuring is called the Flight III version. The Navy also has three Zumwalt (DDG-1000) class destroyers that were procured in FY2007-FY2009 and are equipped with a combat system that is different than the Aegis system. (For more on the DDG-51 and DDG-1000 programs, see CRS Report RL32109, Navy DDG-51 and DDG-1000 Destroyer Programs: Background and Issues for Congress, by Ronald O’Rourke.) More at USNI
*In the program designation DDG(X), the X means the precise design for the ship has not yet been determined.