This report provides background information and discusses potential issues for Congress regarding the Navy's FFG(X) program, a program to procure a new class of guided-missile frigates. The FFG(X) program was initiated as part of the Navy's FY2018 budget submission. The Navy wants to procure the first FFG(X) in FY2020. The Navy's proposed FY2018 budget requests $143.5 million in research and development funding for the program. The FFG(X) program presents several potential oversight issues for Congress. Congress's decisions on the program could affect Navy capabilities and funding requirements and the shipbuilding industrial base.