; and expansion of public and private plants, including land necessary therefor, and such lands and interests therein, may be acquired, and construction prosecuted thereon prior to approval of title, as follows: Ohio Replacement Submarine (AP), $842,853,000. Carrier Replacement Program, $1,869,646,000. Carrier Replacement Program (AP), $2,561,058,000. Virginia Class Submarine, $3,305,315,000. Virginia Class Submarine (AP), $1,920,596,000. CVN Refueling Overhauls, $1,569,669,000. CVN Refueling Overhauls (AP), $75,897,000. DDG–1000 Program, $164,976,000. DDG–51 Destroyer, $3,499,079,000. DDG–51 Destroyer (AP), $90,336,000. Littoral Combat Ship, $1,566,971,000. Expeditionary Sea Base, $635,000,000. LHA Replacement, $1,695,077,000. TAO Fleet Oiler, $449,415,000. TAO Fleet Oiler (AP), $75,068,000. Ship to Shore Connector, $390,554,000. Service Craft, $23,994,000. Towing, Salvage, and Rescue Ship, $76,204,000. LCU 1700, $31,850,000. For outfitting, post delivery, conversions, and first destination transportation, $542,626,000. Completion of Prior Year Shipbuilding Programs, $117,542,000. In all: $21,503,726,000, to remain available for obligation until September 30, 2022: Provided , That additional obligations may be incurred after September 30, 2022, for engineering services, tests, evaluations, and other such budgeted work that must be performed in the final stage of ship construction: Provided further , That none of the funds provided under this heading for the construction or conversion of any naval vessel to be constructed in shipyards in the United States shall be expended in foreign facilities for the construction of major components of such vessel: Provided further , That none of the funds provided under this heading shall be used for the construction of any naval vessel in foreign shipyards: Provided further , That funds appropriated or otherwise made available by this Act for production of the common missile compartment of nuclear-powered vessels may be available for multiyear procurement of critical