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| Shipbuilding and Conversion, Navy (SCN) | |
|---|---|
| Name | Shipbuilding and Conversion, Navy (SCN) |
| Agency | United States Department of the Navy |
| Budget | Discretionary appropriation |
| Jurisdiction | United States |
| Established | Congressional appropriation process |
Shipbuilding and Conversion, Navy (SCN).
Shipbuilding and Conversion, Navy (SCN) funds ship construction, modernization, and conversion programs for the United States Navy, supporting platforms such as Arleigh Burke-class destroyer, Ford-class aircraft carrier, Virginia-class submarine, Littoral Combat Ship, and Amphibious assault ship classes while interfacing with authorities like the Department of Defense, the Congress of the United States, the Office of Management and Budget, the Government Accountability Office, and the Pentagon. SCN appropriations finance work at shipyards including Newport News Shipbuilding, Bath Iron Works, Ingalls Shipbuilding, General Dynamics Electric Boat, and Huntington Ingalls Industries to deliver vessels for combatants engaged in theaters such as the Indo-Pacific region, the Gulf of Aden, the Mediterranean Sea, and the South China Sea. The account supports capital projects that intersect with procurement statutes including the Armed Services Committees, the National Defense Authorization Act, the Appropriations Committees, the Defense Production Act of 1950, and regulatory bodies like the Defense Contract Audit Agency.
SCN traces legislative roots to 19th- and 20th-century naval appropriations conducted by the United States Congress, evolving through landmark statutes such as the Naval Act of 1916 and post-World War II authorizations shaped by debates in the House Armed Services Committee and Senate Armed Services Committee. Congressional actions after conflicts like World War II, the Korean War, the Vietnam War, and the Cold War influenced shipbuilding scale and prompted industrial policy responses tied to legislation from the Department of Defense Reorganization Act of 1986 through modern provisions in the National Defense Authorization Act for Fiscal Year 2021. Authorization and programmatic direction have been affected by hearings before panels chaired by members like those from Senator John McCain's tenure and Representative Adam Smith's committee work, and by reports from oversight entities including the Congressional Budget Office and the Government Accountability Office.
SCN is an appropriations account within annual defense spending enacted by the United States Congress following budget proposals from the President of the United States and submissions from the Secretary of the Navy and the Secretary of Defense. Budget cycles involve testimony before the House Appropriations Committee, the Senate Appropriations Committee, the House Armed Services Committee, and Senate Armed Services Committee markups, and rely on cost estimates from the Congressional Budget Office, audit input from the Government Accountability Office, and contracting guidance from the Defense Contract Management Agency. Appropriations for items like amphibious transport dock, guided-missile destroyer, attack submarine, and aircraft carrier construction are often multiyear, subject to obligations under the Antideficiency Act and coordinated with Treasury operations overseen by the Office of Management and Budget.
Major SCN-funded programs include construction of Ford-class aircraft carriers at Newport News Shipbuilding, Virginia-class submarine production by General Dynamics Electric Boat and Huntington Ingalls Industries, Columbia-class submarine strategic deterrent work, Arleigh Burke-class destroyer modernization at Bath Iron Works and Ingalls Shipbuilding, and amphibious ship programs such as the America-class amphibious assault ship. Other significant projects involve fleet replenishment shipbuilding like John Lewis-class oiler, Littoral Combat Ship procurement and conversion, Zumwalt-class destroyer systems sustainment, and retrofits related to programs overseen by Naval Sea Systems Command and the Office of the Chief of Naval Operations. Programs often coordinate with allied interoperability efforts under frameworks such as NATO initiatives involving the North Atlantic Treaty Organization and bilateral shipbuilding cooperation with partners like United Kingdom, Australia, and Japan.
SCN contracting uses instruments including fixed-price, cost-plus, and multiyear procurement awarded to prime contractors such as Huntington Ingalls Industries, General Dynamics, Bath Iron Works, Fincantieri Marine Group (formerly) affiliates, and smaller vendors in supply chains audited by the Defense Contract Audit Agency and administered by the Defense Contract Management Agency. The industrial base comprises private yards and government facilities like Puget Sound Naval Shipyard, Norfolk Naval Shipyard, and Pearl Harbor Naval Shipyard and ties into workforce development initiatives influenced by legislation and programs involving the Department of Labor and regional economic stakeholders. Supply chain resilience and technology transfer issues engage actors such as the Defense Innovation Unit, the Naval Research Laboratory, and export control regimes aligned with the International Traffic in Arms Regulations.
Oversight of SCN is exercised through hearings and reports from the Government Accountability Office, budget reviews by the Congressional Budget Office, investigations by the Department of Defense Inspector General, and congressional oversight by the House Oversight Committee and Senate Homeland Security and Governmental Affairs Committee when procurement or program management issues arise. Accountability mechanisms include audit trails managed by the Defense Finance and Accounting Service, compliance with the Federal Acquisition Regulation, inspector general audits, and GAO recommendations implemented via directions from the Secretary of the Navy and reviewed in the National Defense Authorization Act process.
SCN investments directly shape naval force structure, affecting carrier strike group composition centered on Carrier Strike Group Three, undersea deterrence via Ballistic missile submarine fields such as the Columbia-class submarine, surface warfare capacity with Arleigh Burke-class destroyer deployments, and expeditionary operations using San Antonio-class amphibious transport dock and America-class amphibious assault ship units in theaters like the Indo-Pacific Command area. Funding priorities influence strategic posture in contexts including deterrence of peer competitors such as the People's Republic of China and tactical support for operations with partners in exercises like RIMPAC and engagements under bilateral frameworks such as the U.S.–Japan Security Treaty and ANZUS Treaty.